Document:

<PAGE>
                                                                     EXHIBIT 4.1

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                        NABORS INDUSTRIES LTD., AS ISSUER

                     NABORS INDUSTRIES, INC., AS GUARANTOR,

                                       AND

                           BANK ONE, N.A., AS TRUSTEE

                               -------------------

                                    INDENTURE

                         DATED AS OF __________________

                               -------------------

                             SENIOR DEBT SECURITIES

================================================================================

<PAGE>
                             NABORS INDUSTRIES LTD.

                 Reconciliation and tie between certain Sections
                of this Indenture, dated as of ______________ and
                     Sections 310 through 318, inclusive, of
                        the Trust Indenture Act of 1939:

<Table>
<Caption>
Trust Indenture
Act Section                                                                        Indenture Section
-----------                                                                        ------------------
<S>                                                                                <C>
310  (a)(1).......................................................................................609
     (a)(2).......................................................................................609
     (a)(3)............................................................................Not Applicable
     (a)(4)............................................................................Not Applicable
     (a)(5).......................................................................................609
     (b)..........................................................................................608
     .............................................................................................610

311  (a)..........................................................................................613
     (b)..........................................................................................613

312  (a)..........................................................................................701
     ..........................................................................................702(a)
     (b).......................................................................................702(b)
     (c).......................................................................................702(c)

313  (a).......................................................................................703(a)
     (b).......................................................................................703(a)
     (c).......................................................................................703(a)
     (d).......................................................................................703(b)

314  (a)..........................................................................................704
     (a)(4).......................................................................................101
     ............................................................................................1004
     (b)...............................................................................Not Applicable
     (c)(1).......................................................................................103
     (c)(2).......................................................................................103
     (c)(3)............................................................................Not Applicable
     (d)...............................................................................Not Applicable
     (e)..........................................................................................103
</Table>

<PAGE>
<Table>
<S>                                                                                              <C>
315  (a)..........................................................................................601
     (b)..........................................................................................602
     (c)..........................................................................................601
     (d)..........................................................................................601
     (e)..........................................................................................514

316  (a)..........................................................................................101
      ............................................................................................102
     (a)(1)(A)....................................................................................502
     .............................................................................................512
     (a)(1)(B)....................................................................................513
     (a)(2)............................................................................Not Applicable
     (b)..........................................................................................508
     (c).......................................................................................105(c)

317  (a)(1).......................................................................................503
     (a)(2).......................................................................................504
     (b).........................................................................................1006

318  (a)..........................................................................................108
</Table>

----------
NOTE: This reconciliation and tie shall not, for any purpose, be deemed to be a
part of the Indenture.

                                       ii
<PAGE>
                                TABLE OF CONTENTS

<Table>
<Caption>
                                                                        Page
                                                                        ----
<S>                                                                     <C>
PARTIES
RECITALS OF THE COMPANY

                                   ARTICLE ONE

                        Definitions and Other Provisions
                             of General Application

Section 101.  Definitions..................................................1
              Act..........................................................2
              Affiliate....................................................2
              Authenticating Agent.........................................2
              Authorized Agent.............................................2
              Bankruptcy Law...............................................2
              Board of Directors...........................................2
              Board Resolution.............................................2
              Business Day.................................................3
              "CINS".......................................................3
              Commission...................................................3
              Company......................................................3
              Company Request or Company Order.............................3
              Conversion Rate..............................................3
              Corporate Trust Office.......................................3
              corporation..................................................3
              Covenant Defeasance..........................................3
              "CUSIP"......................................................3
              days.........................................................3
              Default......................................................3
              Defaulted Interest...........................................3
              Defeasance...................................................4
              Defeasible Series............................................4
              Depositary...................................................4
              Dollar or $..................................................4
              Event of Default.............................................4
              Exchange Act.................................................4
              Exchange Securities..........................................4
              Floating or Adjustable Rate Provision........................4
              Floating or Adjustable Rate Security.........................4
</Table>

                                      iii
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<Table>
<Caption>
                                                                          Page
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<S>                                                                 <C>
              Foreign Currency...........................................  4
              Foreign Entities...........................................  4
              Global Security............................................  4
              Guarantee..................................................  4
              Guarantor..................................................  4
              Holder.....................................................  4
              Indenture..................................................  5
              interest...................................................  5
              Interest Payment Date......................................  5
              Issuing Company............................................  5
              Judgment Currency..........................................  5
              Maturity...................................................  5
              Market Exchange Rate.......................................  5
              Notice of Default..........................................  5
              Officers' Certificate......................................  5
              Opinion of Counsel.........................................  5
              Original Issue Discount Security...........................  5
              Outstanding................................................  5
              Paying Agent...............................................  6
              Person.....................................................  6
              PIK Securities.............................................  6
              Place of Payment...........................................  7
              Predecessor Security.......................................  7
              Redemption Date............................................  7
              Redemption Price...........................................  7
              Regular Record Date........................................  7
              Required Currency..........................................  7
              Responsible Officer........................................  7
              Securities.................................................  7
              Security Register and Security Registrar...................  7
              Special Record Date........................................  7
              Stated Maturity............................................  7
              Subordinated Indenture.....................................  7
              Subsidiary.................................................  7
              trading day................................................  8
              Trustee....................................................  8
              Trust Indenture Act........................................  8
              U.S. Government Obligation.................................  8
              U.S. Guarantor.............................................  8
              Vice President.............................................  8
Section 102.  Incorporation by Reference of Trust Indenture Act..........  8
Section 103.  Compliance Certificates and Opinions.......................  9
Section 104.  Form of Documents Delivered to Trustee.....................  9
Section 105.  Acts of Holders; Record Dates.............................. 10
Section 106.  Notices, Etc. to Trustee and Company....................... 11
Section 107.  Notice to Holders; Waiver.................................. 12
</Table>

                                       iv
<PAGE>
<Table>
<Caption>
                                                                                         Page
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<S>                                                                                       <C>
Section 108.  Conflict with Trust Indenture Act.......................................... 12
Section 109.  Effect of Headings and Table of Contents................................... 12
Section 110.  Successors and Assigns..................................................... 13
Section 111.  Separability Clause........................................................ 13
Section 112.  Benefits of Indenture...................................................... 13
Section 113.  Governing Law, Consent to Jurisdiction and Service of Process and
              Waiver of Immunity......................................................... 13
Section 114.  Legal Holidays............................................................. 14
Section 115.  Securities in a Composite Currency, Currency Unit or Foreign Currency...... 14
Section 116.  Payment in Required Currency; Judgment Currency............................ 15
Section 117.  Language of Notices, Etc................................................... 15
Section 118.  Personal Immunity from Liability for Incorporators, Stockholders, Etc...... 16

                                   ARTICLE TWO
                                 Security Forms

Section 201.  Forms Generally............................................................ 16
Section 202.  Form of Face of Security................................................... 16
Section 203.  Form of Reverse of Security................................................ 19
Section 204.  Form of Legend for Global Securities....................................... 24
Section 205.  Form of Trustee's Certificate of Authentication............................ 24
Section 206.  Form of Conversion Notice.................................................. 25
Section 207.  Securities Issuable in Global Form......................................... 26

                                  ARTICLE THREE
                                 The Securities

Section 301.  Amount Unlimited; Issuable in Series....................................... 27
Section 302.  Denominations.............................................................. 29
Section 303.  Execution, Authentication, Delivery and Dating............................. 29
Section 304.  Temporary Securities....................................................... 31
Section 305.  Registration, Registration of Transfer and Exchange........................ 32
Section 306.  Mutilated, Destroyed, Lost and Stolen Securities........................... 33
Section 307.  Payment of Interest; Interest Rights Preserved............................. 34
Section 308.  Persons Deemed Owners...................................................... 35
Section 309.  Cancellation............................................................... 36
Section 310.  Computation of Interest.................................................... 36
Section 311.  Designation as Senior Debt................................................. 36
Section 312.  CUSIP or CINS Numbers...................................................... 36

                                  ARTICLE FOUR
                           Satisfaction and Discharge

Section 401.  Satisfaction and Discharge of Indenture.................................... 37
Section 402.  Application of Trust Fund.................................................. 38
</Table>

                                       v
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<Table>
<Caption>
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<S>                                                                                  <C>
                                  ARTICLE FIVE
                                    Remedies

Section 501.  Events of Default..................................................... 38
Section 502.  Acceleration of Maturity; Rescission and Annulment.................... 40
Section 503.  Collection of Indebtedness and Suits for Enforcement by Trustee....... 41
Section 504.  Trustee May File Proofs of Claim...................................... 42
Section 505.  Trustee May Enforce Claims Without Possession of Securities........... 42
Section 506.  Application of Money Collected........................................ 42
Section 507.  Limitation on Suits................................................... 43
Section 508.  Unconditional Right of Holders to Receive Principal, Premium
                and Interest and to Convert......................................... 43
Section 509.  Restoration of Rights and Remedies.................................... 44
Section 510.  Rights and Remedies Cumulative........................................ 44
Section 511.  Delay or Omission Not Waiver.......................................... 44
Section 512.  Control by Holders.................................................... 44
Section 513.  Waiver of Past Defaults............................................... 45
Section 514.  Undertaking for Costs................................................. 45

                                   ARTICLE SIX
                                   The Trustee

Section 601.  Certain Duties and Responsibilities................................... 45
Section 602.  Notice of Defaults.................................................... 47
Section 603.  Certain Rights of Trustee............................................. 47
Section 604.  Not Responsible for Recitals or Issuance of Securities................ 48
Section 605.  May Hold Securities................................................... 48
Section 606.  Money Held in Trust................................................... 49
Section 607.  Compensation and Reimbursement........................................ 49
Section 608.  Disqualification; Conflicting Interests............................... 50
Section 609.  Corporate Trustee Required; Eligibility............................... 50
Section 610.  Resignation and Removal; Appointment of Successor..................... 50
Section 611.  Acceptance of Appointment by Successor................................ 52
Section 612.  Merger, Conversion, Consolidation or Succession to Business........... 53
Section 613.  Preferential Collection of Claims Against Company..................... 53
Section 614.  Appointment of Authenticating Agent................................... 53

                                  ARTICLE SEVEN
                Holders' Lists and Reports by Trustee and Company

Section 701.  Company to Furnish Trustee Names and Addresses of Holders............. 55
Section 702.  Preservation of Information; Communications to Holders................ 55
Section 703.  Reports by Trustee.................................................... 55
Section 704.  Reports by Company.................................................... 56
</Table>

                                       vii
<PAGE>

<Table>
<Caption>
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<S>                                                                                          <C>
                                  ARTICLE EIGHT
                    Consolidation, Merger, or Sale of Assets

Section 801.  Company and Guarantors May Consolidate, Etc. Only on Certain Terms.............. 56
Section 802.  Successor Substituted........................................................... 57

                                  ARTICLE NINE
                             Supplemental Indentures

Section 901.  Supplemental Indentures Without Consent of Holders.............................. 57
Section 902.  Supplemental Indentures With Consent of Holders................................. 59
Section 903.  Execution of Supplemental Indentures............................................ 60
Section 904.  Effect of Supplemental Indentures............................................... 60
Section 905.  Revocation and Effect of Consents............................................... 60
Section 906.  Conformity with Trust Indenture Act............................................. 61
Section 907.  Reference in Securities to Supplemental Indentures.............................. 61
Section 908.  Waiver of Compliance by Holders................................................. 61
Section 909.  Notice of Supplemental Indenture................................................ 61

                                   ARTICLE TEN
                                    Covenants

Section 1001. Payment of Principal, Premium and Interest...................................... 61
Section 1002. Maintenance of Office or Agency................................................. 62
Section 1003. Commission Reports; Financial Statements........................................ 62
Section 1004. Compliance Certificate.......................................................... 63
Section 1005. Corporate Existence............................................................. 63
Section 1006. Money for Securities Payments to Be Held in Trust............................... 63
Section 1007. Waiver of Certain Covenants..................................................... 64

                                 ARTICLE ELEVEN
                            Redemption of Securities

Section 1101. Applicability of Article........................................................ 65
Section 1102. Election to Redeem; Notice to Trustee........................................... 65
Section 1103. Selection by Trustee of Securities to Be Redeemed............................... 65
Section 1104. Notice of Redemption............................................................ 66
Section 1105. Deposit of Redemption Price..................................................... 67
Section 1106. Securities Payable on Redemption Date........................................... 67
Section 1107. Securities Redeemed in Part..................................................... 68

                                 ARTICLE TWELVE
                            Conversion of Securities

Section 1201. Applicability of Article........................................................ 68
Section 1202. Exercise of Conversion Privilege................................................ 68
Section 1203. No Fractional Shares............................................................ 69
</Table>

                                      vii
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<Table>
<CAPTION>
                                                                                              Page
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<S>                                                                                           <C>
Section 1204.  Adjustment of Conversion Price................................................. 70
Section 1205.  Notice of Certain Corporate Actions............................................ 70
Section 1206.  Reservation of Exchange Securities............................................. 71
Section 1207.  Payment of Certain Taxes Upon Conversion....................................... 71
Section 1208.  Nonassessability............................................................... 72
Section 1209.  Effect of Consolidation or Merger on Conversion Privilege...................... 72
Section 1210.  Duties of Trustee Regarding Conversion......................................... 73
Section 1211.  Repayment of Certain Funds Upon Conversion..................................... 73

                                ARTICLE THIRTEEN
                       Defeasance and Covenant Defeasance

Section 1301.  Company's Option to Effect Defeasance or Covenant Defeasance................... 74
Section 1302.  Defeasance and Discharge....................................................... 74
Section 1303.  Covenant Defeasance............................................................ 74
Section 1304.  Conditions to Defeasance or Covenant Defeasance................................ 75
Section 1305.  Deposited Money and U.S. Government Obligations to be Held..................... 76
                 In Trust; Other Miscellaneous Provisions
Section 1306.  Reinstatement.................................................................. 77

                                ARTICLE FOURTEEN
                                  Sinking Funds

Section 1401.  Applicability of Article....................................................... 77
Section 1402.  Satisfaction of Sinking Fund Payments with Securities.......................... 78
Section 1403.  Redemption of Securities for Sinking Fund...................................... 78

                                 ARTICLE FIFTEEN
                         Repayment at Option of Holders

Section 1501.  Applicability of Article....................................................... 79
Section 1502.  Repayment of Securities........................................................ 79
Section 1503.  Exercise of Option............................................................. 79
Section 1504.  When Securities Presented for Repayment Become Due and Payable................. 80
Section 1505.  Securities Repaid in Part...................................................... 80

                                 ARTICLE SIXTEEN
                             Guarantee of Securities

Section 1601.  Guarantee...................................................................... 81
</Table>

NOTE: This table of contents shall not, for any purpose, be deemed to be a part
of the Indenture.

                                      viii
<PAGE>

         INDENTURE, dated as of _______________, among Nabors Industries Ltd., a
Bermuda exempted company (herein called the "Company"), having its principal
office at 2nd Fl. International Centre, Warrens, P.O. Box 905E, St. Michael,
Barbados, Nabors Industries, Inc., a Delaware corporation (herein called the
"U.S. Guarantor"), having its principal office at 515 West Greens Road, Suite
1200, Houston, Texas 77067, and Bank One, N.A., as Trustee (herein called the
"Trustee").

                             RECITALS OF THE COMPANY

         The Company has duly authorized the execution and delivery of this
Indenture to provide for the issuance from time to time of its debentures, notes
or other evidences of indebtedness (herein called the "Securities"), to be
issued in one or more series as provided in this Indenture.

         This Indenture is subject to the provisions of the Trust Indenture Act
that are required to be a part of this Indenture and shall, to the extent
applicable, be governed by such provisions.

         All things necessary to make this Indenture a valid agreement of the
Company and of the U.S. Guarantor, in accordance with its terms, have been done.

         NOW, THEREFORE, THIS INDENTURE WITNESSETH:

         For and in consideration of the premises and the purchase of the
Securities by the Holders thereof, it is mutually agreed, for the equal and
proportionate benefit of all Holders of the Securities or of series thereof, as
follows:

                                   ARTICLE ONE

             DEFINITIONS AND OTHER PROVISIONS OF GENERAL APPLICATION

         SECTION 101. DEFINITIONS.

         (a) For all purposes of this Indenture, except as otherwise expressly
provided or unless the context otherwise requires:

                  (1) the terms defined in this Article have the meanings
         assigned to them in this Article and include the plural as well as the
         singular;

                  (2) all other terms used herein which are defined in the Trust
         Indenture Act or the Securities Act of 1933, as amended, either
         directly or by reference therein, have the meanings assigned to them
         therein;

                  (3) all accounting terms not otherwise defined herein have the
         meanings assigned to them in accordance with generally accepted
         accounting principles in the United States of America, and, except as
         otherwise herein expressly provided, the term "generally accepted
         accounting principles" with respect to any computation required or
         permitted

<PAGE>

         hereunder shall mean such accounting principles as are generally
         accepted at the date of such computation;

                  (4) the words "Article" and "Section" refer to an Article and
         Section, respectively, of this Indenture; and

                  (5) the words "herein," "hereof" and "hereunder" and other
         words of similar import refer to this Indenture as a whole and not to
         any particular Article, Section or other subdivision unless context
         otherwise requires.

         (b) Unless otherwise provided, references to agreements and other
instruments shall be deemed to include all amendments and other modifications to
such agreements and instruments, but only to the extent such amendments and
modifications are not prohibited by the terms of this Indenture.

         "Act," when used with respect to any Holder, has the meaning specified
in Section 105.

         "Affiliate" of any specified Person means any other Person directly or
indirectly controlling or controlled by, or under direct or indirect common
control with, such specified Person. For purposes of this definition, "control"
of a Person means the power to direct the management and policies of such
Person, directly or indirectly, whether through the ownership of voting
securities, by contract or otherwise, and the terms "controlling" and
"controlled" shall have meanings correlative to the foregoing. The Trustee may
request and may conclusively rely upon an Officers' Certificate to determine
whether any Person is an Affiliate of any specified Person.

         "Authenticating Agent" means any Person authorized by the Trustee
pursuant to Section 614 to act on behalf of the Trustee to authenticate
Securities of one or more series.

         "Authorized Agent" has the meaning specified in Section 113.

         "Bankruptcy Law" means Title 11, U.S. Code or any similar U.S. Federal
or state law or any similar Bermuda or other foreign law for the relief of
debtors.

         "Board of Directors" means either the board of directors of the Company
or of any Guarantor, as applicable, or any duly authorized committee of that
board.

         "Board Resolution" means a copy of a resolution certified by the
Secretary or an Assistant Secretary of the Company or any Guarantor, the
principal financial officer of the Company or any Guarantor, any other
authorized officer of the Company or any Guarantor, or a person duly authorized
by any of them, in each case as applicable, to have been duly adopted by the
Board of Directors and to be in full force and effect on the date of such
certification, and delivered to the Trustee. Where any provision of this
Indenture refers to action to be taken pursuant to a Board Resolution (including
the establishment of any series of the Securities and the forms and terms
thereof), such action may be taken by any committee, officer or employee of

                                       2
<PAGE>

the Company or any Guarantor, as applicable, authorized to take such action by
the Board of Directors as evidenced by a Board Resolution.

         "Business Day," when used with respect to any Place of Payment, means
each Monday, Tuesday, Wednesday, Thursday and Friday which is not a day on which
banking institutions in that Place of Payment are authorized or obligated by law
or executive order to close.

         "CINS" means CUSIP International Numbering System.

         "Commission" means the Securities and Exchange Commission, as from time
to time constituted, created under the Exchange Act, or, if at any time after
the execution of this instrument such Commission is not existing and performing
the duties now assigned to it under the Trust Indenture Act, then the body
performing such duties at such time.

         "Company" means the Person named as the "Company" in the first
paragraph of this instrument until a successor Person shall have become such
pursuant to the applicable provisions of this Indenture, and thereafter
"Company" shall mean such successor Person.

         "Company Request" or "Company Order" means, in the case of the Company,
a written request or order signed in the name of the Company by its Chairman of
the Board, its Chief Executive Officer, its President, any of its Vice
Presidents or any other duly authorized officer of the Company or any person
duly authorized by any of them, and delivered to the Trustee and, in the case of
any Guarantor, a written request or order signed in the name of such Guarantor
by its Chairman of the Board, its Chief Executive Officer, its President, any of
its Vice Presidents or any other duly authorized officer of such Guarantor or
any person duly authorized by any of them, and delivered to the Trustee.

         "Conversion Rate" has the meaning specified in Section 1204.

         "Corporate Trust Office" means the principal office of the Trustee at
which at any particular time this Indenture shall be administered, which office
at the date hereof is located at 1111 Polaris Parkway, Suite OH1-0181, Columbus,
Ohio 43240.

         "corporation" means a corporation, association, company, joint-stock
company or business trust.

         "Covenant Defeasance" has the meaning specified in Section 1303.

         "CUSIP" means the Committee on Uniform Securities Identification
Procedures.

         "days" mean calendar days.

         "Default" means any event, act or condition that is, or after notice or
the passage of time or both would be, an Event of Default.

         "Defaulted Interest" has the meaning specified in Section 307.

                                       3
<PAGE>

         "Defeasance" has the meaning specified in Section 1302.

         "Defeasible Series" has the meaning specified in Section 1304.

         "Depositary" means, with respect to Securities of any series issuable
in whole or in part in the form of one or more Global Securities, a clearing
agency registered under the Exchange Act that is designated to act as depositary
for such Securities as contemplated by Section 301.

         "Dollar" or "$" means the coin or currency of the United States of
America, which at the time of payment is legal tender for the payment of public
and private debts.

         "Event of Default" has the meaning specified in Section 501.

         "Exchange Act" means the Securities Exchange Act of 1934, as amended
from time to time, and any successor statute thereto.

         "Exchange Securities" has the meaning specified in Section 1201.

         "Floating or Adjustable Rate Provision" means a formula or provision,
specified in or pursuant to a Board Resolution or an indenture supplemental
hereto, providing for the determination, whether pursuant to objective factors
or pursuant to the sole discretion of any Person (including the Company), and
periodic adjustment of the interest rate borne by a Floating or Adjustable Rate
Security.

         "Floating or Adjustable Rate Security" means any Security which
provides for interest thereon at a periodic rate that may vary from time to time
over the term thereof in accordance with a Floating or Adjustable Rate
Provision.

         "Foreign Currency" means a currency used by the government of a country
other than the United States of America.

         "Foreign Entities" has the meaning specified in Section 113.

         "Global Security" means a Security that evidences all or part of the
Securities of any series and is authenticated and delivered to, and registered
in the name of, the Depositary for such Securities or a nominee thereof.

         "Guarantee" means the guarantee by any Guarantor of the obligations
under this Indenture.

         "Guarantor" means each of the U.S. Guarantor and any other Person to
the extent that any of such Persons have guaranteed any of the Securities
pursuant to Section 301 and Article Sixteen.

         "Holder" means a Person in whose name a Security is registered in the
Security Register.

                                       4
<PAGE>

         "Indenture" means this instrument as originally executed or as it may
from time to time be supplemented or amended by one or more indentures
supplemental hereto entered into pursuant to the applicable provisions hereof,
including, for all purposes of this instrument, and any such supplemental
indenture, the provisions of the Trust Indenture Act that are deemed to be a
part of and govern this instrument and any such supplemental indenture,
respectively. The term "Indenture" shall also include the terms of particular
series of Securities established as contemplated by Section 301.

         "interest," when used with respect to an Original Issue Discount
Security which by its terms bears interest only after Maturity, means interest
payable after Maturity.

         "Interest Payment Date," when used with respect to any Security, means
the Stated Maturity of an installment of interest on such Security.

         "Issuing Company" has the meaning specified in Section 1209.

         "Judgment Currency" has the meaning specified in Section 116.

         "Maturity," when used with respect to any Security, means the date on
which the principal of such Security or an installment of principal becomes due
and payable as therein or herein provided, whether at the Stated Maturity or by
declaration of acceleration, call for redemption or otherwise.

         "Market Exchange Rate" has the meaning specified in Section 115.

         "Notice of Default" means a written notice of the kind specified in
Section 501(4).

         "Officers' Certificate" means a certificate signed by (i) any two of
the following individuals: the Chairman, a Vice Chairman, the President or a
Vice President, or (ii) by one of the foregoing individuals and by any other
Vice President, the Treasurer, an Assistant Treasurer, the Controller, an
Assistant Controller, the Corporate Secretary or an Assistant Corporate
Secretary, of the Company or any Guarantor, as applicable, or any other
individual authorized by the Board of Directors for such purpose (as specified
in a Board Resolution), and delivered to the Trustee.

         "Opinion of Counsel" means a written opinion of counsel, who may be an
employee of or counsel to the Company or any Guarantor, as applicable.

         "Original Issue Discount Security" means any Security which provides
for an amount less than the principal amount thereof to be due and payable upon
a declaration of acceleration of the maturity thereof pursuant to Section 502.

         "Outstanding," when used with respect to Securities, means, as of the
date of determination, all Securities theretofore authenticated and delivered
under this Indenture, except:

                                       5
<PAGE>

                  (i) Securities theretofore canceled by the Trustee or
         delivered to the Trustee for cancellation;

                  (ii) Securities for whose payment or redemption money in the
         necessary amount has been theretofore deposited with the Trustee or any
         Paying Agent (other than the Company) in trust or set aside and
         segregated in trust by the Company (if the Company shall act as its own
         Paying Agent) for the Holders of such Securities; provided that, if
         such Securities are to be redeemed, notice of such redemption has been
         duly given pursuant to this Indenture or provision therefor
         satisfactory to the Trustee has been made;

                  (iii) Securities as to which Defeasance has been effected
         pursuant to Section 1302; and

                  (iv) Securities which have been paid pursuant to Section 306
         or in exchange for or in lieu of which other Securities have been
         authenticated and delivered pursuant to this Indenture, other than any
         such Securities in respect of which there shall have been presented to
         the Trustee proof satisfactory to it that such Securities are held by a
         bona fide purchaser in whose hands such Securities are valid
         obligations of the Company;

provided, however, that in determining whether the Holders of the requisite
principal amount of the Outstanding Securities have given any request, demand,
authorization, direction, notice, consent or waiver hereunder, (A) the principal
amount of an Original Issue Discount Security that shall be deemed to be
Outstanding shall be the amount of the principal thereof that would be due and
payable as of the date of such determination upon acceleration of the Maturity
thereof pursuant to Section 502, and (B) Securities owned by (i) the Company or
any other obligor upon the Securities or (ii) any Subsidiary or of such other
obligor upon the Securities shall be disregarded and deemed not to be
Outstanding, except that, in determining whether the Trustee shall be protected
in relying upon any such request, demand, authorization, direction, notice,
consent or waiver, only Securities which a Responsible Officer of the Trustee
knows to be so owned shall be so disregarded. Securities so owned which have
been pledged in good faith may be regarded as Outstanding if the pledgee
establishes to the satisfaction of the Trustee the pledgee's right so to act
with respect to such Securities and that the pledgee is not the Company or any
other obligor upon the Securities or any Subsidiary or of such other obligor.

         "Paying Agent" means any Person authorized by the Company to pay the
principal of or any premium or interest on any Securities on behalf of the
Company.

         "Person" means any individual, corporation, limited liability company,
partnership, joint venture, trust, unincorporated organization or government or
any agency or political subdivision thereof.

         "PIK Securities" means any series of Securities where interest is
payable, at the election of the Company or a holder of such Security, in
additional Securities.

                                       6
<PAGE>

         "Place of Payment," when used with respect to the Securities of any
series, means the place or places where the principal of and any premium and
interest on the Securities of that series are payable as specified as
contemplated by Section 301.

         "Predecessor Security" of any particular Security means every previous
Security evidencing all or a portion of the same debt as that evidenced by such
particular Security; and, for the purposes of this definition, any Security
authenticated and delivered under Section 306 in exchange for or in lieu of a
mutilated, destroyed, lost or stolen Security shall be deemed to evidence the
same debt as the mutilated, destroyed, lost or stolen Security.

         "Redemption Date," when used with respect to any Security to be
redeemed, means the date fixed for such redemption by or pursuant to this
Indenture.

         "Redemption Price," when used with respect to any Security to be
redeemed, means the price at which it is to be redeemed pursuant to this
Indenture.

         "Regular Record Date" for the interest payable on any Interest Payment
Date on the Securities of any series means the date specified for that purpose
as contemplated by Section 301.

         "Required Currency" has the meaning specified in Section 116.

         "Responsible Officer," when used with respect to the Trustee, means any
officer of the Trustee with responsibility for the administration of this
Indenture, and also means, with respect to a particular corporate trust matter,
any other officer to whom such matter is referred because of his or her
knowledge of and familiarity with the particular subject.

         "Securities" has the meaning stated in the first recital of this
Indenture and more particularly means any Securities authenticated and delivered
under this Indenture.

         "Security Register" and "Security Registrar" have the respective
meanings specified in Section 305.

         "Special Record Date" for the payment of any Defaulted Interest means a
date fixed by the Trustee pursuant to Section 307.

         "Stated Maturity," when used with respect to any Security or any
installment of principal thereof or interest thereon, means the date specified
in such Security as the fixed date on which the principal of such Security or
such installment of principal or interest is due and payable.

         "Subordinated Indenture" means the indenture to be entered into or
previously entered into among the Company, the U.S. Guarantor and Bank One,
N.A., as trustee, and relating to certain subordinated debt securities of the
Company.

         "Subsidiary" means a corporation more than 50% of the voting power of
which is controlled, directly or indirectly, by any Guarantor or the Company, as
applicable, or by one or

                                       7
<PAGE>

more other Subsidiaries, or by any Guarantor or the Company, as applicable, and
one or more other Subsidiaries. For the purposes of this definition, "voting
power" means the power to vote for the election of directors, whether at all
times or only so long as no senior class of stock has such voting power by
reason of any contingency.

         "trading day" has the meaning specified in Section 1203.

         "Trustee" means the Person named as the "Trustee" in the first
paragraph of this instrument until a successor Trustee shall have become such
pursuant to the applicable provisions of this Indenture, and thereafter
"Trustee" shall mean or include each Person who is then a Trustee hereunder; if
at any time there is more than one such Person, "Trustee" as used with respect
to the Securities of any series shall mean the Trustee with respect to
Securities of that series.

         "Trust Indenture Act" means the Trust Indenture Act of 1939, as amended
and as in force at the date as of which this instrument was executed; provided,
however, that in the event the Trust Indenture Act of 1939 is amended after such
date, "Trust Indenture Act" means, to the extent required by any such amendment,
the Trust Indenture Act of 1939 as so amended, and except as provided in Section
906.

         "U.S. Government Obligation" has the meaning specified in Section 1304.

         "U.S. Guarantor" means the Person named as the "U.S. Guarantor" in the
first paragraph of this instrument until a successor Person shall have become
such pursuant to the applicable provisions of this Indenture, and thereafter
"U.S. Guarantor" shall mean such successor Person.

         "Vice President," when used with respect to the Company or the Trustee,
means any vice president, whether or not designated by a number or a word or
words added before or after the title "vice president."

         SECTION 102. INCORPORATION BY REFERENCE OF TRUST INDENTURE ACT.

         Whenever this Indenture refers to a provision of the Trust Indenture
Act, such provision is incorporated by reference in and made a part of this
Indenture. The following Trust Indenture Act terms used in this Indenture have
the following meanings:

                  "commission" means the Commission.

                  "indenture securities" means the Securities.

                  "indenture security holder" means a Holder.

                  "indenture to be qualified" means this Indenture.

                  "indenture trustee" or "institutional trustee" means the
         Trustee.

                                       8
<PAGE>

                  "obligor" on the indenture security means the Company, any
         Guarantor (if applicable) or any other obligor on the indenture
         securities.

         All other terms used in this Indenture, and not otherwise defined
herein, that are defined by the Trust Indenture Act, defined by a Trust
Indenture Act reference to another statute or defined by a Commission rule under
the Trust Indenture Act have the meaning so assigned to them.

         SECTION 103. COMPLIANCE CERTIFICATES AND OPINIONS.

         Upon any application or request by the Company or any Guarantor to the
Trustee to take any action under any provision of this Indenture, the Company or
any Guarantor, as the case may be, shall furnish to the Trustee such
certificates and opinions as may be required under the Trust Indenture Act. Each
such certificate or opinion shall be given in the form of an Officers'
Certificate, if to be given by an officer of the Company or any Guarantor, or an
Opinion of Counsel, if to be given by counsel, and shall comply with the
requirements of the Trust Indenture Act and any other requirements set forth in
this Indenture.

         Every certificate or opinion with respect to compliance with a
condition or covenant provided for in this Indenture (excluding certificates
provided for in Section 1004 and opinions of counsel given in connection with
the authentication of a security) shall include

                  (1) a statement that each Person signing such certificate or
         opinion has read such covenant or condition and the definitions herein
         relating thereto;

                  (2) a brief statement as to the nature and scope of the
         examination or investigation upon which the statements or opinions
         contained in such certificate or opinion are based;

                  (3) a statement that, in the opinion of each such Person, such
         Person has made such examination or investigation as is necessary to
         enable such Person to express an informed opinion as to whether or not
         such covenant or condition has been complied with; and

                  (4) a statement as to whether, in the opinion of each such
         Person, such condition or covenant has been complied with.

         SECTION 104. FORM OF DOCUMENTS DELIVERED TO TRUSTEE.

         In any case where several matters are required to be certified by, or
covered by an opinion of, any specified Person, it is not necessary that all
such matters be certified by, or covered by the opinion of, only one such
Person, or that they be so certified or covered by only one document, but one
such Person may certify or give an opinion with respect to some matters and one
or more other such Persons as to other matters, and any such Person may certify
or give an opinion as to such matters in one or several documents.

                                       9
<PAGE>

         Any certificate or opinion of an officer of the Company or any
Guarantor may be based, insofar as it relates to legal matters, upon a
certificate or opinion of, or representations by, counsel, unless such officer
knows, or in the exercise of reasonable care should know, that the certificate
or opinion or representations with respect to the matters upon which its
certificate or opinion is based are erroneous. Any such certificate or opinion
of counsel may be based, insofar as it relates to factual matters, upon a
certificate or opinion of, or representations by, an officer or officers of the
Company or any Guarantor, as the case may be, stating that the information with
respect to such factual matters is in the possession of the Company or any
Guarantor, as the case may be, unless such counsel knows, or in the exercise of
reasonable care should know, that the certificate or opinion or representations
with respect to such matters are erroneous.

         Any certificate, statement or opinion of an officer of the Company or
any Guarantor, as the case may be, or of counsel may be based, insofar as it
relates to accounting matters, upon a certificate, opinion or representation by
an accountant or firm of accountants in the employ of the Company or any
Guarantor, as the case may be, unless such officer or counsel, as the case may
be, knows, or in the exercise of reasonable care should know, that the
certificate, opinion or representation with respect to such accounting matters
upon which its certificate, statement or opinion may be based is erroneous.

         Where any Person is required to make, give or execute two or more
applications, requests, consents, certificates, statements, opinions or other
instruments under this Indenture, they may, but need not, be consolidated and
form one instrument.

         SECTION 105. ACTS OF HOLDERS; RECORD DATES.

         (a) Any request, demand, authorization, direction, notice, consent,
waiver or other action provided or permitted by this Indenture to be given or
taken by Holders may be embodied in and evidenced by one or more instruments of
substantially similar tenor signed by such Holders in person or by agent duly
appointed in writing; and, except as herein otherwise expressly provided, such
action shall become effective when such instrument or instruments are delivered
to the Trustee and, where it is hereby expressly required, to the Company or any
Guarantor. Such instrument or instruments (and the action embodied therein and
evidenced thereby) are herein sometimes referred to as the "Act" of the Holders
signing such instrument or instruments. Proof of execution of any such
instrument or of a writing appointing any such agent shall be sufficient for any
purpose of this Indenture and (subject to Section 601) conclusive in favor of
the Trustee, the Company and any Guarantor (if applicable), if made in the
manner provided in this Section.

         (b) The fact and date of the execution by any Person of any such
instrument or writing may be proved by the affidavit of a witness of such
execution or by a certificate of a notary public or other officer authorized by
law to take acknowledgments of deeds, certifying that the individual signing
such instrument or writing acknowledged to him or her the execution thereof.
Where such execution is by a signer acting in a capacity other than such
signer's individual capacity, such certificate or affidavit shall also
constitute sufficient proof of such signer's authority. The fact and date of the
execution of any such instrument or writing, or the authority of the Person
executing the same, may also be proved in any other manner which the Trustee
deems sufficient.

                                       10
<PAGE>

         (c) The Company and, as applicable, any Guarantor may, in the
circumstances permitted by the Trust Indenture Act, fix any day as the record
date for the purpose of determining the Holders of Outstanding Securities of any
series entitled to give or take any request, demand, authorization, direction,
notice, consent, waiver or other action, or to vote on any action, authorized or
permitted to be given or taken by Holders of Outstanding Securities of such
series. If not set by the Company and, as applicable, any Guarantor, prior to
the first solicitation of a Holder of Securities of such series made by any
Person in respect of any such action, or, in the case of any such vote, prior to
such vote, the record date for any such action or vote shall be the 30th day
(or, if later, the date of the most recent list of Holders required to be
provided pursuant to Section 701) prior to such first solicitation or vote, as
the case may be. With regard to any record date for action to be taken by the
Holders of one or more series of Securities, only the Holders of Securities of
such series on such date (or their duly designated proxies) shall be entitled to
give or take, or vote on, the relevant action.

         (d) The ownership of Securities shall be proved by the Security
Register or by a certificate of the Security Registrar.

         (e) Any request, demand, authorization, direction, notice, consent,
waiver or other Act of the Holder of any Security shall bind every future Holder
of the same Security and the Holder of every Security issued upon the
registration of transfer thereof or in exchange therefor or in lieu thereof in
respect of anything done, omitted or suffered to be done by the Trustee or the
Company or any Guarantor (if applicable) in reliance thereon, whether or not
notation of such action is made upon such Security.

         (f) Without limiting the foregoing, a Holder entitled hereunder to give
or take any action hereunder with regard to any particular Security may do so
with regard to all or any part of the principal amount of such Security or by
one or more duly appointed agents each of which may do so pursuant to such
appointment with regard to all or any different part of such principal amount.

         SECTION 106. NOTICES, ETC. TO TRUSTEE AND COMPANY.

         Any request, demand, authorization, direction, notice, consent, waiver
or Act of Holders or other document provided or permitted by this Indenture to
be made upon, given or furnished to, or filed with,

                  (1) the Trustee by any Holder, any Guarantor (if applicable)
         or by the Company shall be sufficient for every purpose hereunder if
         made, given, furnished or filed in writing to or with the Trustee at
         its Corporate Trust Office; provided, however, that the same shall be
         made, given, furnished or filed only when received by a Responsible
         Officer of the Trustee at its Corporate Trust Office, Attention:
         Corporate Trust Department, or

                  (2) the Company or any Guarantor (if applicable) by the
         Trustee, or by any Holder shall be sufficient for every purpose
         hereunder (unless otherwise herein expressly

                                       11
<PAGE>

         provided) if in writing and mailed, first-class postage prepaid, to the
         Company or any Guarantor, as applicable, addressed to it at the address
         of its principal office specified in the first paragraph of this
         instrument; provided, however, that the same shall be made, given,
         furnished or filed only when received by the Company, Attention:
         President, or any Guarantor, Attention: President, as applicable, or at
         any other address previously furnished in writing to the Trustee by the
         Company or any Guarantor, as applicable.

         SECTION 107. NOTICE TO HOLDERS; WAIVER.

         Where this Indenture provides for notice to Holders of any event, such
notice shall be sufficiently given (unless otherwise herein expressly provided)
if in writing and mailed, first-class postage prepaid, to each Holder affected
by such event, at its address as it appears in the Security Register, not later
than the latest date (if any), and not earlier than the earliest date (if any),
prescribed for the giving of such notice; provided, however, that the Company,
any Guarantor or the Trustee, upon a good faith determination that mailing is in
the circumstances impractical, may give such notice by any other method which,
in the reasonable belief of the Company or any Guarantor or, in the case of the
Trustee, of the Company or any Guarantor and the Trustee, is likely to be
received by the Holders. In any case where notice to Holders is given by mail,
neither the failure to mail such notice, nor any defect in any notice so mailed,
to any particular Holder shall affect the sufficiency of such notice with
respect to other Holders. Where this Indenture provides for notice in any
manner, such notice may be waived in writing by the Person entitled to receive
such notice, either before or after the event, and such waiver shall be the
equivalent of such notice. Waivers of notice by Holders shall be filed with the
Trustee, but such filing shall not be a condition precedent to the validity of
any action taken in reliance upon such waiver.

         In case by reason of the suspension of regular mail service or by
reason of any other cause it shall be impracticable to give such notice by mail,
then such notification as shall be made with the approval of the Trustee shall
constitute a sufficient notification for every purpose hereunder.

         SECTION 108. CONFLICT WITH TRUST INDENTURE ACT.

         If any provision hereof limits, qualifies or conflicts with a provision
of the Trust Indenture Act that is required under such Act to be a part of and
govern this Indenture, the required provision shall control. If any provision of
this Indenture modifies or excludes any provision of the Trust Indenture Act
that may be so modified or excluded, the latter provision shall be deemed to
apply to this Indenture as so modified or to be excluded, as the case may be.

         SECTION 109. EFFECT OF HEADINGS AND TABLE OF CONTENTS.

         The Article and Section headings herein and the Table of Contents are
for convenience only and shall not affect the construction hereof.

                                       12
<PAGE>

         SECTION 110. SUCCESSORS AND ASSIGNS.

         All covenants and agreements in this Indenture by each of the Company
and any Guarantor shall bind its respective successors and assigns, whether so
expressed or not.

         SECTION 111. SEPARABILITY CLAUSE.

         In case any provision in this Indenture or in the Securities or the
Guarantee (if applicable) shall be invalid, illegal or unenforceable, the
validity, legality and enforceability of the remaining provisions shall not in
any way be affected or impaired thereby.

         SECTION 112. BENEFITS OF INDENTURE.

         Nothing in this Indenture or in the Securities or the Guarantee (if
applicable), express or implied, shall give to any Person, other than the
parties hereto and their successors hereunder and the Holders, any benefit or
any legal or equitable right, remedy or claim under this Indenture.

         SECTION 113. GOVERNING LAW, CONSENT TO JURISDICTION AND SERVICE OF
         PROCESS AND WAIVER OF IMMUNITY.

         THIS INDENTURE, THE SECURITIES AND THE GUARANTEE SHALL BE GOVERNED BY
AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK, BUT WITHOUT
REGARD TO PRINCIPLES OF CONFLICTS OF LAWS.

         Each of the Company and any Guarantor not organized under the laws of
the United States (including the states thereof and the District of Columbia)
("Foreign Entities") hereby appoints the U.S. Guarantor as the authorized agent
thereof (the "Authorized Agent") upon whom process may be served in any action,
suit or proceeding arising out of or based on this Indenture or the Securities
or the Guarantee which may be instituted in the Supreme Court of the State of
New York or the United States District Court for the Southern District of New
York, in either case in the Borough of Manhattan, the City of New York, by the
Holder of any Security, and to the fullest extent permitted by applicable law,
each of the Foreign Entities hereby waives any objection which it may now or
hereafter have to the laying of venue of any such proceeding and expressly and
irrevocably accepts and submits, for the benefit of the Holders from time to
time of the Securities of any series, to the nonexclusive jurisdiction of any
such court in respect of any such action, suit or proceeding, for itself and
with respect to its properties, revenues and assets. Such appointment shall be
irrevocable unless and until the appointment of a successor authorized agent for
such purpose, and such successor's acceptance of such appointment, shall have
occurred. Each of the Foreign Entities agrees to take any and all actions,
including the filing of any and all documents and instruments, that may be
necessary to continue such appointment in full force and effect as aforesaid.
Service of process upon the Authorized Agent with respect to any such action
shall be deemed, in every respect, effective service of process upon the Foreign
Entities, as the case may be. Notwithstanding the foregoing, any action against
any of the Foreign Entities arising out of or based on this Indenture, any
Security of any series or the Guarantee may also be instituted by the Holder of
such Security in any court in the jurisdiction of organization of the respective
Foreign Entities, as the case may be, and each of the

                                       13
<PAGE>

Foreign Entities expressly accepts the jurisdiction of any such court in any
such action. The U.S. Guarantor hereby accepts the foregoing appointment as
agent for service of process.

         To the extent that the Foreign Entities or any of their properties,
assets or revenues may have or may hereafter become entitled to, or have
attributed to it, any right of immunity, on the grounds of sovereignty or
otherwise, from any legal action, suit or proceeding, from the giving of any
relief in any thereof, from set-off or counterclaim, from the jurisdiction of
any court, from service of process, from attachment upon or prior to judgment,
from attachment in aid of execution of judgment, or from execution of judgment,
or other legal process or proceeding for the giving of any relief or for the
enforcement of any judgment, in any jurisdiction in which proceedings may at any
time be commenced, with respect to its obligations, liabilities or any other
matter arising out of or based on this Indenture or the Securities of any series
or the Guarantee, each of the Foreign Entities, to the maximum extent permitted
by law, hereby irrevocably and unconditionally waives, and agrees not to plead
or claim, any such immunity and consents to such relief and enforcement.

         SECTION 114. LEGAL HOLIDAYS.

         In any case where any Interest Payment Date, Redemption Date or Stated
Maturity of any Security or the last day on which a Holder has the right to
convert a Security at a particular conversion price shall not be a Business Day
at any Place of Payment, then (notwithstanding any other provision of this
Indenture or of the Securities or, if applicable, the Guarantee (other than a
provision of the Securities of any series or, if applicable, the Guarantee which
specifically states that such provision shall apply in lieu of this Section
114)) payment of interest, if any, or principal (and premium, if any) or
conversion need not be made at such Place of Payment on such date, but may be
made on the next succeeding Business Day at such Place of Payment with the same
force and effect as if made on the Interest Payment Date or Redemption Date, or
at the Stated Maturity, provided that no interest shall accrue with respect to
such payment for the period from and after such Interest Payment Date,
Redemption Date or Stated Maturity, as the case may be.

         SECTION 115. SECURITIES IN A COMPOSITE CURRENCY, CURRENCY UNIT OR
         FOREIGN CURRENCY.

         Unless otherwise specified in an Officers' Certificate delivered
pursuant to Section 301 of this Indenture with respect to a particular series of
Securities, whenever for purposes of this Indenture any action may be taken by
the Holders of a specified percentage in aggregate principal amount of
Securities of all series or all series affected by a particular action at the
time Outstanding and, at such time, there are Outstanding Securities of any
series which are denominated in a coin, currency or currencies other than
Dollars (including, but not limited to, any composite currency, currency units
or Foreign Currency), then the principal amount of Securities of such series
which shall be deemed to be Outstanding for the purpose of taking such action
shall be that amount of Dollars that could be obtained for such amount at the
Market Exchange Rate. For purposes of this Section, the term "Market Exchange
Rate" shall mean the noon Dollar buying rate in The City of New York for cable
transfers of such currency or currencies as published by the Federal Reserve
Bank of New York, as of the most recent

                                       14
<PAGE>

available date. If such Market Exchange Rate is not so available for any reason
with respect to such currency, the Trustee shall use, in its sole discretion and
without liability on its part, such quotation of the Federal Reserve Bank of New
York as of the most recent available date, or quotations or rates of exchange
from one or more major banks in The City of New York or in the country of issue
of the currency in question, which for purposes of euros shall be Brussels,
Belgium, or such other quotations or rates of exchange as the Trustee shall deem
appropriate. The provisions of this paragraph shall apply in determining the
equivalent principal amount in respect of Securities of a series denominated in
a currency other than Dollars in connection with any action taken by Holders of
Securities pursuant to the terms of this Indenture.

              All decisions and determinations of the Trustee regarding the
Market Exchange Rate or any alternative determination provided for in the
preceding paragraph shall be in its sole discretion and shall, in the absence of
manifest error, be conclusive to the extent permitted by law for all purposes
and irrevocably binding upon the Company and all Holders.

         SECTION 116. PAYMENT IN REQUIRED CURRENCY; JUDGMENT CURRENCY.

         Each of the Company and any Guarantor agrees, to the fullest extent
that it may effectively do so under applicable law, that (a) if for the purpose
of obtaining judgment in any court it is necessary to convert the sum due in
respect of the principal of or interest on the Securities of any series (the
"Required Currency") into a currency in which a judgment will be rendered (the
"Judgment Currency"), the rate of exchange used shall be the rate at which in
accordance with normal banking procedures the Trustee could purchase in The City
of New York the Required Currency with the Judgment Currency on the day on which
final unappealable judgment is entered, unless such day is not a Banking Day,
then, to the extent permitted by applicable law, the rate of exchange used shall
be the rate at which in accordance with normal banking procedures the Trustee
could purchase in The City of New York the Required Currency with the Judgment
Currency on the Banking Day next preceding the day on which final unappealable
judgment is entered and (b) its obligations under this Indenture to make
payments in the Required Currency (i) shall not be discharged or satisfied by
any tender, or any recovery pursuant to any judgment (whether or not entered in
accordance with subclause (a)), in any currency other than the Required
Currency, except to the extent that such tender or recovery shall result in the
actual receipt, by the payee, of the full amount of the Required Currency
expressed to be payable in respect of such payments, (ii) shall be enforceable
as an alternative or additional cause of action for the purpose of recovering in
the Required Currency the amount, if any, by which such actual receipt shall
fall short of the full amount of the Required Currency so expressed to be
payable and (iii) shall not be affected by judgment being obtained for any other
sum due under this Indenture.

         SECTION 117. LANGUAGE OF NOTICES, ETC.

         Any request, demand, authorization, direction, notice, consent, waiver
or Act required or permitted under this Indenture shall be in the English
language, except that any published notice may be in an official language of the
country of publication.

                                       15
<PAGE>

         SECTION 118. PERSONAL IMMUNITY FROM LIABILITY FOR INCORPORATORS,
         STOCKHOLDERS, ETC.

         No recourse shall be had for the payment of the principal, premium, if
any, or interest, if any, on any Security or the Guarantee (if applicable), or
for any claim based thereon, or otherwise in respect of any Security or the
Guarantee (if applicable), or based on or in respect of this Indenture or any
indenture supplemental hereto, against any incorporator, or against any past,
present or future stockholder, director or officer, as such, of each of the
Company, any Guarantor or of any of their respective successor corporations,
whether by virtue of any constitution, statute or rule of law, or by the
enforcement of any assessment or penalty or otherwise, all such liability being
expressly waived and released as a condition of, and as consideration for, the
execution of this Indenture and the issue of the Securities.

                                   ARTICLE TWO

                                 SECURITY FORMS

         SECTION 201. FORMS GENERALLY.

         The Securities of each series and, if applicable, the notation thereon
relating to the Guarantee, shall be in substantially the form set forth in this
Article, or in such other form or forms as shall be established by or pursuant
to a Board Resolution or in one or more indentures supplemental hereto, in each
case with such appropriate insertions, omissions, substitutions and other
variations as are required or permitted by this Indenture, and may have such
letters, numbers or other marks of identification and such legends or
endorsements placed thereon as may be required to comply with the rules of any
securities exchange or Depositary therefor or as may, consistent herewith, be
determined by the officers executing such Securities and the Guarantee (if
applicable), as evidenced by their execution thereof. If the form of Securities
of any series is established by action taken pursuant to a Board Resolution, a
copy of an appropriate record of such action shall be certified by the Corporate
Secretary or an Assistant Corporate Secretary of the Company and delivered to
the Trustee at or prior to the delivery of the Company Order contemplated by
Section 303 for the authentication and delivery of such Securities.

         The definitive Securities shall be printed, lithographed or engraved on
steel engraved borders or may be produced in any other manner, all as determined
by the officers executing such Securities, as evidenced by their execution of
such Securities.

         The forms of Global Securities of any series shall have such provisions
and legends as are customary for Securities of any series in global form,
including without limitation any legend required by the Depositary for the
Securities of such series.

         SECTION 202. FORM OF FACE OF SECURITY.

         [Insert any legend required by the Internal Revenue Code of 1986, as
amended and the regulations thereunder.]

         [If a Global Security,--insert legend required by Section 204 of the
Indenture] [If applicable, insert --UNLESS THIS SECURITY IS PRESENTED BY AN
AUTHORIZED

                                       16
<PAGE>

REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION, TO THE
COMPANY OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY
SECURITY ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR SUCH OTHER NAME AS IS
REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY (AND
ANY PAYMENT IS MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN
AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY), ANY TRANSFER, PLEDGE
OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL SINCE
THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.]

                             NABORS INDUSTRIES LTD.

No.____ [$]____

         NABORS INDUSTRIES LTD., a Bermuda exempted company (herein called the
"Company," which term includes any successor Person under the Indenture
hereinafter referred to), for value received, hereby promises to pay to
________________________, or registered assigns, the principal sum of
[$]______________ [__________ Dollars] [if applicable insert one or more Foreign
Currencies, currency units or composite currencies] [if the Security is to bear
interest prior to Maturity, insert -- and to pay interest thereon from _________
or from the most recent interest Payment Date to which interest has been paid or
duly provided for, [semi-annually on __________ and __________ in each year] [if
other than semi-annual payments, insert frequency of payments and payment
dates], commencing ________________, at [if the Security is to bear interest at
a fixed rate, insert -- the rate of ______% per annum][if the Security is a
Floating or Adjustable Rate Security, insert -- a rate per annum
[computed-determined] in accordance with the [insert defined name of Floating or
Adjustable Rate Provision] set forth below], [if the Security is to bear
interest at a rate determined with reference to an index, refer to description
of index below] until the principal hereof is paid or made available for payment
[if applicable, insert -- and (to the extent that the payment of such interest
shall be legally enforceable) at the rate of ____% per annum on any overdue
principal and premium and on any overdue installment of interest]. The interest
so payable, and punctually paid or duly provided for, on any Interest Payment
Date will, as provided in such Indenture, be paid to the Person in whose name
this Security (or one or more Predecessor Securities) is registered at the close
of business on the Regular Record Date for such interest, which shall be the
___________ or ____________ (whether or not a Business Day), as the case may be,
next preceding such Interest Payment Date. Any such interest not so punctually
paid or duly provided for will forthwith cease to be payable to the Holder on
such Regular Record Date and may either be paid to the Person in whose name this
Security (or one or more Predecessor Securities) is registered at the close of
business on a Special Record Date for the payment of such Defaulted Interest to
be fixed by the Trustee, notice whereof shall be given to Holders of Securities
of this series not less than 10 days prior to such Special Record Date, or be
paid at any time in any other lawful manner not inconsistent with the
requirements of any securities exchange on which the Securities of this series
may be listed, and upon such notice as may be required by such exchange, all as
more fully provided in said Indenture).

                                       17
<PAGE>

         [If the Securities are Floating or Adjustable Rate Securities with
respect to which the principal, premium, if any, or interest may be determined
with reference to an index, insert the text of the Floating or Adjustable Rate
Provision.]

         [If the Security is not to bear interest prior to Maturity, insert --
The principal of this Security shall not bear interest except in the case of a
default in payment of principal upon acceleration, upon redemption or at Stated
Maturity and in such case the overdue principal of this Security shall bear
interest at the rate of __% per annum (to the extent that the payment of such
interest shall be legally enforceable), which shall accrue from the date of such
default in payment to the date payment of such principal has been made or duly
provided for. Interest on any overdue principal shall be payable on demand. Any
such interest on any overdue principal that is not so paid on demand shall bear
interest at the rate of ______% per annum (to the extent that the payment of
such interest shall be legally enforceable), which shall accrue from the date of
such demand for payment to the date payment of such interest has been made or
duly provided for, and such interest shall also be payable on demand.]

         [If a Global Security, insert--Payment of the principal of (and
premium, if any) and [if applicable, insert--any such] interest on this Security
will be made by transfer of immediately available funds to a bank account in
___________ designated by the Holder in such coin or currency of the United
States of America as at the time of payment is legal tender for payment of
public and private debts [state other currency].]

         [If a Definitive Security, insert--Payment of the principal of (and
premium, if any) and [if applicable, insert--any such] interest on this Security
will be made at the office or agency of the Company maintained for that purpose
in _______________, in such coin or currency of the United States of America as
at the time of payment is legal tender for payment of public and private debts]
[state other currency] [or subject to any laws or regulations applicable thereto
and to the right of the Company (as provided in the Indenture) to rescind the
designation of any such Paying Agent, at the [main] offices of ________________
in _____________, or at such other offices or agencies as the Company may
designate, by [United States Dollar] [state other currency] check drawn on, or
transfer to a [United States Dollar] account maintained by the payee with, a
bank in The City of New York (so long as the applicable Paying Agency has
received proper transfer instructions in writing at least ___ days prior to the
payment date)] [if applicable, insert--; provided, however, that payment of
interest may be made at the option of the Company by [United States Dollar]
[state other currency] check mailed to the addresses of the Persons entitled
thereto as such addresses shall appear in the Security Register] [or by transfer
to a [United States Dollar] [state other currency] account maintained by the
payee with a bank in The City of New York [state other place of payment] (so
long as the applicable Paying Agent has received proper transfer instructions in
writing by the record date prior to the applicable interest payment date)].]

         Reference is hereby made to the further provisions of this Security set
forth on the reverse hereof, which further provisions shall for all purposes
have the same effect as if set forth at this place.

                                       18
<PAGE>

         Unless the certificate of authentication hereon has been executed by
the Trustee referred to on the reverse hereof by manual signature, this Security
shall not be entitled to any benefit under the Indenture or be valid or
obligatory for any purpose.

         IN WITNESS WHEREOF, the Company has caused this instrument to be duly
executed.

Dated:

                                      NABORS INDUSTRIES LTD.

                                      By:
                                         ---------------------------
                                      Attest:
                                             -----------------------

         SECTION 203. FORM OF REVERSE OF SECURITY.

         This Security is one of a duly authorized issue of senior securities of
the Company (herein called the "Securities"), issued and to be issued in one or
more series under an Indenture, dated as of _______________ (herein called the
"Indenture"), among the Company, any Guarantor and ________________, as Trustee
(herein called the "Trustee," which term includes any successor trustee under
the Indenture), to which Indenture and all indentures supplemental thereto
reference is hereby made for a statement of the respective rights, limitations
of rights, duties and immunities thereunder of the Company, any Guarantor, the
Trustee and the Holders of the Securities and of the terms upon which the
Securities are, and are to be, authenticated and delivered. As provided in the
Indenture, the Securities may be issued in one or more series, which different
series may be issued in various aggregate principal amounts, may mature at
different times, may bear interest, if any, at different rates, may be subject
to different redemption provisions, if any, may be subject to different sinking,
purchase or analogous funds, if any, may be subject to different covenants and
Events of Default and may otherwise vary as in the Indenture provided or
permitted. This Security is one of the series designated on the face hereof [,
limited in aggregate principal amount to [[$]___________][if applicable, insert
-- relevant amount in applicable Foreign Currency, currency unit or composite
currency]].

         This security is the general, unsecured, senior obligation of the
Company [if applicable, insert--and is guaranteed pursuant to a guarantee (the
"Guarantee") by _____________ (the "Guarantor[(s)]"). The Guarantee is the
general, unsecured, senior obligation of any such Guarantor.]

         [If applicable, insert -- The Securities of this series are subject to
redemption upon not less than 30 days' nor more than 60 days' notice by mail,
[if applicable, insert -- (1) on __________ in any year commencing with the year
____ and ending with the year ____ through operation of the sinking fund for
this series at a Redemption Price equal to 100% of the principal amount, and
(2)] at any time [on or after ________________], as a whole or in part, at the
election of the Company, at the following Redemption Prices (expressed as
percentages of the principal amount): If redeemed [on or before _________, ___%
and if redeemed] during the 12-month period beginning of the years indicated,

                                       19
<PAGE>

<Table>
<Caption>
                    Redemption                                     Redemption
Year                Price                     Year                 Price
----------          ---------------           ----------           -------------
<S>                 <C>                       <C>                  <C>

</Table>

and thereafter at a Redemption Price equal to __________% of the principal
amount, together in the case of any such redemption [if applicable, insert
--(whether through operation of the sinking fund or otherwise)] with accrued
interest to the Redemption Date, but interest installments whose Stated Maturity
is on or prior to such Redemption Date will be payable to the Holders of such
Securities, or one or more Predecessor Securities, of record at the close of
business on the relevant Record Dates referred to on the face hereof, all as
provided in the Indenture.]

         [If applicable, insert -- The Securities of this series are subject to
redemption upon not less than 30 days' nor more than 60 days' notice by mail,
(1) on ________ in any year commencing with the year __________ and ending with
the year __________ through operation of the sinking fund for this series at the
Redemption Prices for redemption through operation of the sinking fund
(expressed as percentages of the principal amount) set forth in the table below,
and (2) at any time [on or after _________], as a whole or in part, at the
election of the Company, at the Redemption Prices for redemption otherwise than
through operation of the sinking fund (expressed as percentages of the principal
amount) set forth in the table below: If redeemed during the 12-month period
beginning __________ of the years indicated,

<Table>
                                                          Redemption Price For
                  Redemption Price For                    Redemption Otherwise
                  Redemption Through Operation            Than Through Operation
Year              of the Sinking Fund                     of the Sinking Fund
----              ------------------------                ----------------------
<S>               <C>                                     <C>

</Table>

         and thereafter at a Redemption Price equal to ____% of the principal
amount, together in the case of any such redemption (whether through operation
of the sinking fund or otherwise) with accrued interest to the Redemption Date,
but interest installments whose Stated Maturity in on or prior to such
Redemption Date will be payable to the Holders of such Securities, or one or
more Predecessor Securities, of record at the close of business on the relevant
Record Dates referred to on the face hereof, all as provided in the Indenture.]

         [Notwithstanding the foregoing, the Company may not, prior to
___________________, redeem any Securities of this series as contemplated by
[Clause (2) of] the preceding paragraph as a part of, or in anticipation of, any
refunding operation by the application, directly or indirectly, of moneys
borrowed having an interest cost to the Company (calculated in accordance with
generally accepted financial practice) of less than _______% per annum.]

                                       20
<PAGE>

         [The sinking fund for this series provides for the redemption on
__________ in each year beginning with the year _____ and ending with the year
____ of [not less than [$]__________ ("mandatory sinking fund") and not more
than] [$]__________ aggregate principal amount of Securities of this series.
Securities of this series acquired or redeemed by the Company otherwise than
through [mandatory] sinking fund payments may be credited against subsequent
[mandatory] sinking fund payments otherwise required to be made [in the inverse
order in which they become due).]

         [If the Security is subject to redemption, insert -- In the event of
redemption of this Security in part only, a new Security or Securities of this
series and of like tenor for the unredeemed portion hereof will be issued in the
name of the Holder hereof upon the cancellation hereof.]

         The Indenture contains provisions for defeasance at any time of (1) the
entire indebtedness of this Security or (2) certain restrictive covenants and
Events of Default with respect to this Security, in each case upon compliance
with certain conditions set forth in the Indenture.

         [If the Security is convertible into other securities or property,
specify the conversion features and the form of conversion notice pursuant to
Section 206 hereof.]

         [If the Security is not an Original Issue Discount Security, insert --
If an Event of Default with respect to Securities of this series shall occur and
be continuing, the principal of the Securities of this series may be declared
due and payable in the manner and with the effect provided in the Indenture.]

         [If the Security is an Original Issue Discount Security, insert -- If
an Event of Default with respect to Securities of this series shall occur and be
continuing, an amount of principal of the Securities of this series may be
declared due and payable in the manner and with the effect provided in the
Indenture. Such amount shall be equal to [Insert formula for determining the
amount]. Upon payment (i) of the amount of principal so declared due and payable
and (ii) of interest on any overdue principal and overdue interest (in each case
to the extent that the payment of such interest shall be legally enforceable),
all of the Company's obligations in respect of the payment of the principal of
and interest, if any, on the Securities of this series shall terminate.]

         The Indenture permits, with certain exceptions as therein provided, the
amendment thereof and the modification of the rights and obligations of the
Company [If applicable, insert - any Guarantor] and the rights of the Holders of
the Securities of each series to be affected under the Indenture at any time by
the Company [If applicable, insert - any Guarantor] and the Trustee with the
consent of the Holders of a majority in principal amount of the Securities at
the time outstanding of each series to be affected.

         The Indenture contains provisions permitting the Holders of specified
percentages in principal amount of the Securities of each series at the time
Outstanding, on behalf of the Holders of all Securities of such series, to waive
compliance by the Company [If applicable,

                                       21
<PAGE>

insert - any Guarantor] with certain provisions of the Indenture and certain
past defaults under the Indenture and their consequences. Any such consent or
waiver by the Holder of this Security shall be conclusive and binding upon such
Holder and upon all future Holders of this Security and of any Security issued
upon the registration of transfer hereof or in exchange hereof or in lieu
hereof, whether or not notation of such consent or waiver is made upon this
Security.

         No reference herein to the Indenture and no provision of this Security
or of the Indenture shall alter or impair the obligation of the Company, which
is absolute and unconditional, to pay the principal, premium, if any, and
interest on this Security at the times, place and [rate(s)], and in the coin or
currency, herein prescribed.

         [If a Global Security, insert--This Global Security or portion hereof
may not be exchanged for definitive Securities of this series except in the
limited circumstances provided in the Indenture. The holders of beneficial
interests in this Global Security will not be entitled to receive physical
delivery of definitive Securities except as described in the Indenture and will
not be considered the Holders thereof for any purpose under the Indenture.]

         As provided in the Indenture and subject to certain limitations therein
set forth, the transfer of this Security is registerable in the Security
Register, upon surrender of this Security for registration of transfer at the
office or agency of the Company in any place where the principal, premium, if
any, and interest on this Security are payable, [if applicable, insert--The City
of New York [, or, subject to any laws or regulations applicable thereto and to
the right of the Company (limited as provided in the Indenture) to rescind the
designation of any such transfer agent, at the [main] offices of _______________
in ________________ or at such other offices or agencies as the Company may
designate]] duly endorsed by, or accompanied by a written instrument of transfer
in form satisfactory to the Company and the Security Registrar duly executed by,
the Holder hereof or his attorney duly authorized in writing, and thereupon one
or more new Securities of this series and of like tenor, of authorized
denominations and for the same aggregate principal amount, will be issued to the
designated transferee or transferees.

         The Securities of this series are issuable only in registered form
without coupons in denominations of $1,000 and any integral multiple thereof [if
applicable, insert the equivalent thereof in one or more Foreign Currencies,
currency units or composite currencies]. As provided in the Indenture and
subject to certain limitations therein set forth, Securities of this series are
exchangeable for a like aggregate principal amount of Securities of this series
and of like tenor of a different authorized denomination, as requested by the
Holder surrendering the same.

         No service charge shall be made for any such registration of transfer
or exchange, but the Company may require payment of a sum sufficient to cover
any tax or other governmental charge payable in connection therewith.

         Prior to due presentment of this Security for registration of transfer,
the Company, [if applicable, insert - any Guarantor,] the Trustee and any agent
of the Company [if applicable, insert - any Guarantor,] or the Trustee may treat
the Person in whose name this Security is registered as the owner hereof for all
purposes, whether or not this Security is overdue, and none

                                       22
<PAGE>

of the Company, [if applicable, insert - any Guarantor,] the Trustee nor any
such agent shall be affected by notice to the contrary.

         No recourse under or upon any obligation, covenant or agreement of or
contained in the Indenture or of or contained in any Security, [If applicable,
insert--, or the Guarantee endorsed thereon,] or for any claim based thereon or
otherwise in respect thereof, or in any Security [If applicable, insert--or in
the Guarantee], or because of the creation of any indebtedness represented
thereby, shall be had against any incorporator, shareholder, member, officer,
manager or director, as such, past, present or future, of the Company [If
applicable, insert--or any Guarantor] or of any successor Person, either
directly or through the Company [If applicable, insert--or any Guarantor] or any
successor Person, whether by virtue of any constitution, statute or rule of law,
or by the enforcement of any assessment, penalty or otherwise; it being
expressly understood that all such liability is hereby expressly waived and
released by the acceptance hereof and as a condition of, and as part of the
consideration for, the Securities and the execution of the Indenture.

         The Indenture provides that the Company [If applicable, insert--and any
Guarantor] (a) will be discharged from any and all obligations in respect of the
Securities (except for certain obligations described in the Indenture), or (b)
need not comply with certain restrictive covenants of the Indenture, in each
case if the Company [If applicable, insert--or any Guarantor] deposits, in
trust, with the Trustee money or U.S. Government Obligations (or a combination
thereof) which through the payment of interest thereon and principal thereof in
accordance with their terms will provide money, in an amount sufficient to pay
all the principal of and interest on the Securities, but such money need not be
segregated from other funds except to the extent required by law.

         Except as otherwise defined herein, all terms used in this Security
which are defined in the Indenture shall have the meanings assigned to them in
the Indenture.

         [If a Definitive Security, insert as a separate page--

         FOR VALUE RECEIVED, the undersigned hereby sell(s), assign(s) and
transfer(s) unto _______________________(Please Print or Typewrite Name and
Address of Assignee) the within instrument of NABORS INDUSTRIES LTD. and does
hereby irrevocably constitute and appoint ___________________ Attorney to
transfer said instrument on the books of the within-named Company, with full
power of substitution in the premises.

Please Insert Social Security or Other Identifying Number of Assignee:

-----------------------------             -----------------------
Dated:
      -----------------------             -----------------------
                                                (Signature)

NOTICE: The signature to this assignment must correspond with the name as
written upon the face of the within instrument in every particular, without
alteration or enlargement or any change whatever.]

                                       23
<PAGE>

         [If a Security to which Article Sixteen has been made applicable,
insert the following Form of Notation on such Security relating to the
Guarantee-- Each Guarantor (which term includes any successor Person in such
capacity under the Indenture), has fully, unconditionally and absolutely
guaranteed, to the extent set forth in the Indenture and subject to the
provisions in the Indenture, the due and punctual payment of the principal of,
and premium, if any, and interest, if any, on the Securities and all other
amounts due and payable under the Indenture and the Securities by the Company.

         The obligations of any Guarantor to the Holders of Securities and to
the Trustee pursuant to the Guarantee and the Indenture are expressly set forth
in Article Sixteen of the Indenture and reference is hereby made to the
Indenture for the precise terms of the Guarantee.

                                              [Guarantor(s):

                                              ---------------------------
                                              By:
                                                 ------------------------]

         SECTION 204. FORM OF LEGEND FOR GLOBAL SECURITIES.

         Every Global Security authenticated and delivered hereunder shall bear
a legend in substantially the following form or such other legends as may be
required:

         This Security is a Global Security within the meaning of the Indenture
hereinafter referred to and is registered in the name of a Depositary or a
nominee thereof. This Security may not be transferred to, or registered or
exchanged for Securities registered in the name of, any Person other than the
Depositary or a nominee thereof and no such transfer may be registered, except
in the limited circumstances described in the Indenture. Every Security
authenticated and delivered upon registration of transfer of, or in exchange for
or in lieu of, this Security shall be a Global Security subject to the
foregoing, except in such limited circumstances.

         SECTION 205. FORM OF TRUSTEE'S CERTIFICATE OF AUTHENTICATION.

         The Trustee's certificate of authentication shall be in substantially
the following form:

         This is one of the Securities of the series designated therein referred
to in the within-mentioned Indenture.

                                             ----------------------,
                                             as Trustee

                                             By                    ,
                                               --------------------
                                             Authorized Signatory

                                       24
<PAGE>

         SECTION 206. FORM OF CONVERSION NOTICE.

         To Nabors Industries Ltd.:

         The undersigned owner of this Security hereby irrevocably exercises the
option to convert this Security, or portion hereof (which is $1,000 or an
integral multiple thereof) below designated, into shares of Exchange Securities
in accordance with the terms of the Indenture referred to in this Security, and
directs that the Exchange Securities issuable and deliverable upon the
conversion, together with any check in payment for fractional Exchange
Securities and any Securities representing any unconverted principal amount
hereof, be issued and delivered to the registered holder hereof unless a
different name has been indicated below. If this Notice is being delivered on a
date after the close of business on a Regular Record Date and prior to the
opening of business on the related Interest Payment Date (unless this Security
or the portion thereof being converted has been called for redemption on a
Redemption Date within such period), this Notice is accompanied by payment of an
amount equal to the interest payable on such Interest Payment Date of the
principal of this Security to be converted. If Exchange Securities are to be
issued in the name of a Person other than the undersigned, the undersigned will
pay all transfer taxes payable with respect hereto. Any amount required to be
paid by the undersigned on account of interest accompanies this Security.

Principal Amount to be Converted (in an integral multiple of $1,000, if less
than all [if applicable, insert the equivalent thereof in one or more Foreign
Currencies, currency units or composite currencies]):

[$]               Dated
   -----------         ---------------
                                            -----------------------
                                            Signature

                                            [If applicable, Signature(s) must be
                                            guaranteed by an institution which
                                            is a member of one of the following
                                            recognized signature Guarantee
                                            Programs: (i) The Securities
                                            Transfer Agent Medallion Program
                                            (STAMP); (ii) The New York Stock
                                            Exchange Medallion Program (MNSP);
                                            (iii) The Stock Exchange Medallion
                                            Program (SEMP); or (iv) another
                                            guarantee program acceptable to the
                                            Trustee.

                                            -----------------------
                                            Signature Guarantee ]

                                       25
<PAGE>

         Fill in for registration of Exchange Securities and Security if to be
issued otherwise than to the registered holder.

                                            -----------------------------
                                                        (Name)

                                            -----------------------------
                                                      (Address)
                                            Please print Name and Address
                                                (including zip code)

Social Security or other Taxpayer Identifying Number:
                                                     ---------------

         SECTION 207. SECURITIES ISSUABLE IN GLOBAL FORM.

         If Securities of or within a series are issuable in global form, as
specified as contemplated by Section 301, then, notwithstanding clause (11) of
Section 301, any such Security shall represent such of the Outstanding
Securities of such series as shall be specified therein and may provide that it
shall represent the aggregate amount of Outstanding Securities of such series
from time to time endorsed thereon and that the aggregate amount of Outstanding
Securities of such series represented thereby may from time to time by increased
or decreased to reflect exchanges. Any endorsement of a Security in global form
to reflect the amount, or any increase or decrease in the amount, of Outstanding
Securities represented thereby shall be made by the Trustee in such manner and
upon instructions given by such Person or Persons as shall be specified therein
or in the Company Order to be delivered to the Trustee pursuant to Section 303
or Section 304. Subject to the provisions of Section 303 and, if applicable,
Section 304, the Trustee shall deliver and redeliver any Security in permanent
global form in the manner and upon instructions given by the Person or Persons
specified therein or in the applicable Company Order. If a Company Order
pursuant to Section 303 or Section 304 has been, or simultaneously is,
delivered, any instructions by the Company with respect to endorsement or
delivery or redelivery of a Security in global form shall be in writing but need
not comply with Section 103 and need not be accompanied by an Opinion of
Counsel.

         The provisions of the last sentence of Section 303 shall apply to any
Security represented by a Security in global form if such Security was never
issued and sold by the Company and the Company delivers to the Trustee the
Security in global form together with written instructions (which need not
comply with Section 103 and need not be accompanied by an Opinion of Counsel)
with regard to the reduction in the principal amount of Securities represented
thereby, together with the written statement contemplated by the last sentence
of Section 303.

         Notwithstanding the provisions of Section 307, unless otherwise
specified as contemplated by Section 301, payment of principal of and any
premium and interest on any Security in permanent global form shall be made to
the Person or Persons specified therein.

         Notwithstanding the provisions of Section 308 and except as provided in
the preceding paragraph, the Company, any Guarantor, the Trustee and any agent
of the Company, any Guarantor and the Trustee shall treat as the Holder of such
principal amount of Outstanding Securities represented by a permanent global
Security the Holder of such permanent global Security in registered form.

                                       26
<PAGE>

                                  ARTICLE THREE

                                 THE SECURITIES

         SECTION 301. AMOUNT UNLIMITED; ISSUABLE IN SERIES.

         The aggregate principal amount of Securities which may be authenticated
and delivered under this Indenture is unlimited. The Securities may be issued in
one or more series. There shall be established in or pursuant to a Board
Resolution or established in one or more indentures supplemental hereto, prior
to the issuance of Securities of any series,

                  (1) the title of the Securities of the series (which shall
         distinguish the Securities of the series from Securities of any other
         series);

                  (2) any limit upon the aggregate principal amount of the
         Securities of the series which may be authenticated and delivered under
         this Indenture (except for Securities authenticated and delivered upon
         registration of transfer of, or in exchange for, or in lieu of, other
         Securities of the series pursuant to Sections 304, 305, 306, 907, 1107
         or 1202 and except for any Securities which, pursuant to Section 303,
         are deemed never to have been authenticated and delivered hereunder);

                  (3) the Person to whom any interest on a Security of the
         series shall be payable, if other than the Person in whose name that
         Security (or one or more Predecessor Securities) is registered at the
         close of business on the Regular Record Date for such interest;

                  (4) the date or dates, or the method or methods (and related
         procedures) by which such date or dates will be determined or extended,
         on which the principal of the Securities of the series is payable;

                  (5) the rate or rates at which the Securities of the series
         shall bear interest, if any, or the Floating or Adjustable Rate
         Provision pursuant to which such rates shall be determined, the date or
         dates from which such interest shall accrue, the Interest Payment Dates
         on which any such interest shall be payable and the Regular Record Date
         for any interest payable on any Interest Payment Date;

                  (6) whether the Securities of the series would be secured
         pursuant to Section 901(7);

                  (7) the place or places where the principal of (and premium,
         if any) and interest, if any, on Securities of the series shall be
         payable;

                  (8) if applicable, the period or periods within which, the
         price or prices at which (including premium, if any) and the terms and
         conditions upon which Securities of the series shall be redeemed, in
         whole or in part, at the option of the Company pursuant to a sinking
         fund or otherwise;

                                       27
<PAGE>

                  (9) the obligation, if any, of the Company to redeem or
         purchase Securities of the series pursuant to any sinking fund or
         analogous provisions or at the option of a Holder thereof and the
         period or periods within which, the price or prices at which and the
         terms and conditions upon which Securities of the series shall be
         redeemed or purchased, in whole or in part, pursuant to such
         obligation;

                  (10) if applicable, the terms of any right to convert or
         exchange Securities of the series into any securities or property of
         the Company or other issuers;

                  (11) if other than denominations of $1,000 and any integral
         multiple thereof (or the equivalent thereof in one or more Foreign
         Currencies, currency units or composite currencies), the denominations
         in which Securities of the series shall be issuable;

                  (12) if the amount of payments of principal of (or premium, if
         any) or interest, if any, on any Securities of the series may be
         determined with reference to one or more indices, the manner in which
         such amounts shall be determined;

                  (13) if other than currency of the United States, one or more
         Foreign Currencies, currency units or composite currencies in which the
         Securities of the series are to be denominated;

                  (14) if other than the coin or currency in which the
         Securities of the series are denominated, the coin or currency in which
         payment of the principal of (and premium, if any) and interest, if any,
         on the Securities of the series shall be payable;

                  (15) the price or prices (expressed as a percentage of the
         principal amount thereof) at which the Securities will be issued and,
         if other than the principal amount thereof, the portion of the
         principal amount of Securities of the series which shall be payable
         upon declaration of acceleration of the Maturity thereof pursuant to
         Section 502 or provable under any applicable federal or state
         bankruptcy or similar law pursuant to Section 503;

                  (16) if applicable, that the Securities of the series shall be
         issuable in whole or in part in the form of one or more Global
         Securities and, in such case, the Depositary or Depositaries for such
         Global Security or Global Securities and any circumstance other than
         those set forth in Section 305 in which any such Global Security may be
         transferred to, and registered and exchanged for Securities registered
         in the name of, a Person other than the Depositary for such Global
         Security or a nominee thereof and in which any such transfer may be
         registered;

                  (17) whether the Securities are to be issued as Original Issue
         Discount Securities;

                  (18) whether the interest, if any, on the Securities is to be
         payable, at the election of the Company or a holder thereof, in cash or
         in PIK Securities and the period or periods within which, and the terms
         and conditions upon which, such election may be made;

                                       28
<PAGE>

                  (19) any other event or events of default applicable with
         respect to the Securities of the series in addition to those provided
         in Section 501(1) through (7);

                  (20) any other covenant or warranty included for the benefit
         of Securities of the series in addition to (and not inconsistent with)
         those included in this Indenture for the benefit of Securities of all
         series, or any other covenant or warranty included for the benefit of
         Securities of the series in lieu of any covenant or warranty included
         in this Indenture for the benefit of Securities of all series, or any
         provision that any covenant or warranty included in this Indenture for
         the benefit of Securities of all series shall not be for the benefit of
         Securities of the series, or any combination of such covenants,
         warranties or provisions;

                  (21) any restriction or condition on the transferability of
         the Securities of the series;

                  (22) any authenticating or paying agents, registrars,
         conversion agents or any other agents with respect to the Securities of
         the series;

                  (23) whether the Securities of the series shall have the
         benefits of any Guarantee and, if so, whether such Guarantee will be by
         the U.S. Guarantor only, by any other Guarantor only, by one or more of
         the U.S. Guarantor and/or any other Guarantor jointly and severally or
         otherwise, and the terms and provisions applicable to any such
         Guarantee; and

                  (24) any other terms of the series (which terms shall not be
         inconsistent with the provisions of this Indenture, except as permitted
         by Section 901(6)).

         All Securities of any one series shall be substantially identical
except as to denomination and except as may otherwise be provided in or pursuant
to the Board Resolution referred to above or in any such indenture supplemental
hereto.

         If any of the terms of the series are established by action taken
pursuant to a Board Resolution, a copy of such action shall be delivered to the
Trustee.

         SECTION 302. DENOMINATIONS.

         The Securities of each series shall be issuable in registered form
without coupons in such denominations as shall be specified as contemplated by
Section 301. In the absence of any such provisions with respect to the
Securities of any series, the Securities of such series shall be issuable in
denominations of $1,000 and any integral multiple thereof and if applicable, the
equivalents thereof in one or more Foreign Currencies, currency units or
composite currencies.

         SECTION 303. EXECUTION, AUTHENTICATION, DELIVERY AND DATING.

         The Securities shall be executed on behalf of the Company by its
Chairman, a Vice Chairman, its President, any Vice President, its Treasurer or

                                       29
<PAGE>

Assistant Treasurer, its Controller or Assistant Controller under its corporate
seal reproduced thereon attested by its Corporate Secretary or one of its
Assistant Corporate Secretaries. Any Guarantee endorsed on the Securities shall
be executed on behalf of each Guarantor by its Chairman, a Vice Chairman, its
President, any Vice President, its Treasurer or Assistant Treasurer, its
Controller or Assistant Controller under its corporate seal reproduced thereon
attested by its Corporate Secretary or one its Assistant Corporate Secretaries.
The signature of any of these officers of the Company or any Guarantor on the
Securities may be manual or facsimile.

         The seal of the Company may be in the form of a facsimile thereof and
may be impressed, affixed, imprinted or otherwise reproduced on the Securities.
Securities and any Guarantee bearing the manual or facsimile signatures of
individuals who were at any time the proper officers of the Company or any
Guarantor, as the case may be, shall bind the Company or any Guarantor, as the
case may be, notwithstanding that such individuals or any of them have ceased to
hold such offices prior to the authentication and delivery of such Securities or
did not hold such offices at the date of such Securities. Minor typographical
and other minor errors in the text of any Security or minor defects in the seal
or facsimile signature on any Security shall not affect the validity or
enforceability of such Security or Guarantee, if applicable, if it has been duly
authenticated and delivered by the Trustee.

         At any time and from time to time after the execution and delivery of
this Indenture, the Company may deliver Securities of any series executed by the
Company to the Trustee for authentication, together with a Company Order for the
authentication and delivery of such Securities, and the Trustee in accordance
with the Company Order shall authenticate and deliver such Securities. If the
form or terms of the Securities of the series have been established in or
pursuant to one or more Board Resolutions or indentures supplemental hereto as
permitted by Sections 201 and 301, in authenticating such Securities, and
accepting the additional responsibilities under this Indenture in relation to
such Securities, the Trustee shall be entitled to receive, and (subject to
Section 601) shall be fully protected in relying upon, an Opinion of Counsel
stating,

                  (a) if the form of such Securities has been established by or
         pursuant to Board Resolutions or indentures supplemental hereto as
         permitted by Section 201, that such form has been established in
         conformity with the provisions of this Indenture;

                  (b) if the terms of such Securities have been established by
         or pursuant to Board Resolutions or indentures supplemental hereto as
         permitted by Section 301, that such terms have been established in
         conformity with the provisions of this Indenture; and

                  (c) that such Securities, when authenticated and delivered by
         the Trustee and issued by the Company in the manner and subject to any
         conditions specified in such Opinion of Counsel, will constitute valid
         and legally binding obligations of the Company and any Guarantor (if
         applicable), enforceable in accordance with their terms, subject to
         bankruptcy, insolvency, fraudulent transfer, reorganization, moratorium
         and similar laws of general applicability relating to or affecting
         creditors' rights generally and to general equity principles.

                                       30
<PAGE>

         The Trustee shall have the right to decline to authenticate and deliver
any Securities under this Section if the Trustee, being advised by counsel,
determines that such action may not lawfully be taken or if the Trustee in good
faith by its board of directors, executive committee, or a trust committee of
directors or committee of Responsible Officers of the Trustee shall determine
that such action would expose the Trustee to personal liability to existing
Holders of Securities.

         Notwithstanding the provisions of Section 301 and of the preceding
paragraph, if all Securities of a series are not to be originally issued at one
time, it shall not be necessary to deliver the Board Resolution otherwise
required pursuant to Section 301 or the Company Order and Opinion of Counsel
otherwise required pursuant to such preceding paragraph at or prior to the time
of authentication of each Security of such series if such documents are
delivered at or prior to the authentication upon original issuance of the first
Security of such series to be issued.

         Each Security shall be dated the date of its authentication.

         No Security, nor any Guarantee endorsed thereon, shall be entitled to
any benefit under this Indenture or be valid or obligatory for any purpose
unless there appears on such Security a certificate of authentication
substantially in the form provided for herein executed by the Trustee by manual
signature, and such certificate upon any Security shall be conclusive evidence,
and the only evidence, that such Security has been duly authenticated and
delivered hereunder. Notwithstanding the foregoing, if any Security shall have
been authenticated and delivered hereunder but never issued and sold by the
Company, and the Company shall deliver such Security to the Trustee for
cancellation as provided in Section 309, for all purposes of this Indenture such
Security shall be deemed never to have been authenticated and delivered
hereunder and shall never be entitled to the benefits of this Indenture.

         SECTION 304. TEMPORARY SECURITIES.

         Pending the preparation of definitive Securities of any series, the
Company may execute, and upon Company Order the Trustee shall authenticate and
deliver, temporary Securities which are printed, lithographed, typewritten,
mimeographed or otherwise produced, in any authorized denomination,
substantially of the tenor of the definitive Securities in lieu of which they
are issued and with such appropriate insertions, omissions, substitutions and
other variations as the officers of the Company executing such Securities may
determine, as evidenced by their execution of such Securities.

         If temporary Securities of any series are issued, the Company will
cause definitive Securities of that series to be prepared without unreasonable
delay. After the preparation of definitive Securities of such series, the
temporary Securities of such series shall be exchangeable for definitive
Securities of such series upon surrender of the temporary Securities of such
series at the office or agency of the Company in a Place of Payment for that
series, without charge to the Holder. Upon surrender for cancellation of any one
or more temporary Securities of any series, the Company shall execute and the
Trustee shall authenticate and deliver in exchange therefor one or more
definitive Securities of the same series, of any authorized denominations and of
a like aggregate principal amount and tenor. Until so exchanged the temporary
Securities

                                       31
<PAGE>

of any series shall in all respects be entitled to the same benefits under this
Indenture as definitive Securities of such series and tenor.

         SECTION 305. REGISTRATION, REGISTRATION OF TRANSFER AND EXCHANGE.

         The Company shall cause to be kept at the Corporate Trust Office of the
Trustee a register (the register maintained in such office and in any other
office or agency of the Company in a Place of Payment being herein sometimes
collectively referred to as the "Security Register") in which, subject to such
reasonable procedures as it or the Trustee may prescribe, the Company shall
provide for the registration of Securities and of transfers of Securities. The
Trustee is hereby appointed "Security Registrar" for the purpose of registering
Securities and transfers of Securities as herein provided.

         Upon surrender for registration of transfer of any Security of any
series at the office or agency in a Place of Payment for that series, the
Company and each Guarantor (if applicable) shall execute, and the Trustee shall
authenticate and deliver, in the name of the designated transferee or
transferees, one or more new Securities, with an endorsement of the Guarantee
(if applicable) executed by each Guarantor, of the same series, of any
authorized denominations and of a like aggregate principal amount and tenor.

         At the option of the Holder, Securities of any series may be exchanged
for other Securities of the same series, of any authorized denominations and of
a like aggregate principal amount and tenor, upon surrender of the Securities to
be exchanged at such office or agency. Whenever any Securities are so
surrendered for exchange, the Company and each Guarantor (if applicable) shall
execute, and the Trustee shall authenticate and deliver, the Securities, with an
endorsement of the Guarantee (if applicable) executed by each Guarantor, which
the Holder making the exchange is entitled to receive.

         All Securities issued upon any registration of transfer or exchange of
Securities shall be the valid obligations of the Company, and any Guarantor (if
applicable) evidencing the same debt, and entitled to the same benefits under
this Indenture, as the Securities surrendered upon such registration of transfer
or exchange.

         Every Security presented or surrendered for registration of transfer,
exchange, redemption or payment shall (if so required by the Company, any
Guarantor (if applicable) or the Trustee) be duly endorsed, or be accompanied by
a written instrument of transfer in form satisfactory to the Company and the
Security Registrar duly executed, by the Holder thereof or his attorney duly
authorized in writing.

         No service charge shall be made for any registration of transfer or
exchange of Securities, but the Company, any Guarantor (if applicable) or the
Trustee may require payment of a sum sufficient to cover any tax or other
governmental charge that may be imposed in connection with any registration of
transfer or exchange of Securities, other than exchanges pursuant to Section
304, 907, 1107 or 1202 not involving any transfer.

                                       32
<PAGE>

         None of the Company, any Guarantor (if applicable) or the Trustee shall
be required (i) to issue, register the transfer of or exchange Securities of any
series during a period beginning at the opening of business 15 days before the
day of the mailing of a notice of redemption of Securities of that series
selected for redemption under Section 1103 and ending at the close of business
on the day of such mailing, or (ii) to register the transfer of or exchange any
Security so selected for redemption in whole or in part, except the unredeemed
portion of any Security being redeemed in part.

         Notwithstanding any other provision in this Indenture, no Global
Security may be transferred to, or registered or exchanged for Securities
registered in the name of, any Person other than the Depositary for such Global
Security or any nominee thereof, and no such transfer may be registered, unless
(1) such Depositary (A) notifies the Company, any Guarantor (if applicable) and
the Trustee that it is unwilling or unable to continue as Depositary for such
Global Security or (B) ceases to be a clearing agency registered under the
Exchange Act, and, in either case, the Company does not appoint a successor
depository in 90 days, (2) the Company and any Guarantor (if applicable)
executes and delivers to the Trustee a Company Order that such Global Security
shall be so transferable, registrable and exchangeable, and such transfers shall
be registrable, (3) there shall have occurred and be continuing an Event of
Default with respect to the Securities evidenced by such Global Security or (4)
there shall exist such other circumstances, if any, as have been specified for
this purpose as contemplated by Section 301. Notwithstanding any other provision
in this Indenture, a Global Security to which the restriction set forth in the
preceding sentence shall have ceased to apply may be transferred only to, and
may be registered and exchanged for Securities registered only in the name or
names of, such Person or Persons as the Depositary for such Global Security
shall have directed and no transfer thereof other than such a transfer may be
registered.

         Every Security authenticated and delivered upon registration of
transfer of, or in exchange for or in lieu of, a Global Security to which the
restriction set forth in the first sentence of the preceding paragraph shall
apply, whether pursuant to this Section, Section 304, 306, 907, 1107 or 1202 or
otherwise, shall be authenticated and delivered in the form of, and shall be, a
Global Security.

         SECTION 306. MUTILATED, DESTROYED, LOST AND STOLEN SECURITIES.

         If there shall be delivered to the Company, any Guarantor (if
applicable) or the Trustee (i) a mutilated Security, or (ii) evidence to their
satisfaction of the destruction, loss or theft of any Security and in either
case such security or indemnity as may be required by either of them to save
each of them and any agent of either of them harmless, then, in the absence of
notice to the Company or the Trustee that such Security has been acquired by a
bona fide purchaser, the Company and each Guarantor (if applicable) shall
execute and the Trustee shall authenticate and deliver, in lieu of any such
mutilated, destroyed, lost or stolen Security, a new Security, with an
endorsement of the Guarantee (if applicable) executed by each Guarantor, of the
same series and of like tenor and principal amount and bearing a number not
contemporaneously outstanding.

                                       33
<PAGE>

         In case any such mutilated, destroyed, lost or stolen Security has
become or is about to become due and payable, the Company in its discretion may,
instead of issuing a new Security, pay such Security.

         Upon the issuance of any new Security under this Section, the Company
or the Trustee may require the payment of a sum sufficient to cover any tax or
other governmental charge that may be imposed in relation thereto and any other
expenses (including the fees and expenses of the Trustee) connected therewith.

         Every new Security of any series issued pursuant to this Section in
lieu of any destroyed, lost or stolen Security shall constitute an original
additional contractual obligation of the Company and any Guarantor (if
applicable), whether or not the destroyed, lost or stolen Security shall be at
any time enforceable by anyone, and shall be entitled to all the benefits of
this Indenture equally and proportionately with any and all other Securities of
that series duly issued hereunder.

         The provisions of this Section are exclusive and shall preclude (to the
extent lawful) all other rights and remedies with respect to the replacement or
payment of mutilated, destroyed, lost or stolen Securities.

         SECTION 307. PAYMENT OF INTEREST; INTEREST RIGHTS PRESERVED.

         Except as otherwise provided as contemplated by Section 301 with
respect to any series of Securities, interest on any Security which is payable,
and is punctually paid or duly provided for, on any Interest Payment Date shall
be paid to the Person in whose name that Security (or one or more Predecessor
Securities) is registered at the close of business on the Regular Record Date
for such interest.

         Any interest on any Security of any series which is payable, but is not
punctually paid or duly provided for, on any Interest Payment Date (herein
called "Defaulted Interest") shall forthwith cease to be payable to the Holder
on the relevant Regular Record Date by virtue of having been such Holder, and
such Defaulted Interest may be paid by the Company, at its election in each
case, as provided in Clause (1) or (2) below:

                  (1) The Company may elect to make payment of any Defaulted
         Interest to the Persons in whose names the Securities of such series
         (or their respective Predecessor Securities) are registered at the
         close of business on a Special Record Date for the payment of such
         Defaulted Interest, which shall be fixed in the following manner. The
         Company shall notify the Trustee in writing of the amount of Defaulted
         Interest proposed to be paid on each Security of such series and the
         date of the proposed payment, and at the same time the Company shall
         deposit with the Trustee an amount of money equal to the aggregate
         amount proposed to be paid in respect of such Defaulted Interest or
         shall make arrangements reasonably satisfactory to the Trustee for such
         deposit prior to the date of the proposed payment, such money when
         deposited to be held in trust for the benefit of the Persons entitled
         to such Defaulted Interest as in this Clause provided. Thereupon the
         Trustee shall fix a Special Record Date for the payment of such
         Defaulted

                                       34
<PAGE>

         Interest which shall be not more than 15 days and not less than 10 days
         prior to the date of the proposed payment and not less than 15 days
         after the receipt by the Trustee of the notice of the proposed payment.
         The Trustee shall promptly notify the Company of such Special Record
         Date and, in the name and at the expense of the Company, shall cause
         notice of the proposed payment of such Defaulted Interest and the
         Special Record Date therefor to be given to each Holder of Securities
         of such series, in the manner set forth in Section 106, not less than
         10 days prior to such Special Record Date. Notice of the proposed
         payment of such Defaulted Interest and the Special Record Date therefor
         having been so given, such Defaulted Interest shall be paid to the
         Persons in whose names the Securities of such series (or their
         respective Predecessor Securities) are registered at the close of
         business on such Special Record Date and shall no longer be payable
         pursuant to the following Clause (2).

                  (2) The Company may make payment of any Defaulted Interest on
         the Securities of any series in any other lawful manner not
         inconsistent with the requirements of any securities exchange on which
         such Securities may be listed, and upon such notice as may be required
         by such exchange, if, after notice given by the Company to the Trustee
         of the proposed payment pursuant to this Clause, such manner of payment
         shall be deemed practicable by the Trustee.

         Subject to the foregoing provisions of this Section, each Security
delivered under this Indenture upon registration of transfer of or in exchange
for or in lieu of any other Security shall carry the rights to accrue interest
and the rights to interest accrued and unpaid, which were carried by such other
Security.

         Subject to the provisions of Section 1202, in the case of any Security
which is converted after any Regular Record Date and on or prior to the next
succeeding Interest Payment Date (other than any Security the principal of (or
premium, if any, on)) which shall become due and payable, whether at a Stated
Maturity or by declaration of acceleration, call for redemption, or otherwise,
prior to such Interest Payment Date), interest whose Stated Maturity is on such
Interest Payment Date shall be payable on such Interest Payment Date
notwithstanding such conversion and such interest (whether or not punctually
paid or duly provided for) shall be paid to the Person in whose name that
Security (or any one or more Predecessor Securities) is registered at the close
of business on such Regular Record Date. Except as otherwise expressly provided
in the immediately preceding sentence, in the case of any Security which is
converted, interest whose Stated Maturity is after the date of conversion of
such Security shall not be payable.

         SECTION 308. PERSONS DEEMED OWNERS.

         Prior to due presentment of a Security for registration of transfer,
the Company, the Trustee and any Guarantor (if applicable) and any agent thereof
may treat the Person in whose name such Security is registered as the owner of
such Security for the purpose of receiving payment of principal of and any
premium and (subject to Section 307) any interest on such Security and for all
other purposes whatsoever, whether or not such Security be overdue, and

                                       35
<PAGE>

none of the Company, the Trustee, any Guarantor (if applicable) or any agent of
any of them shall be affected by notice to the contrary.

         SECTION 309. CANCELLATION.

         All Securities surrendered for payment, redemption, registration of
transfer or exchange or for credit against any sinking fund payment or for
conversion shall, if surrendered to any Person other than the Trustee, be
delivered to the Trustee and shall be promptly canceled by it. The Company may
at any time deliver to the Trustee for cancellation any Securities previously
authenticated and delivered hereunder which the Company may have acquired in any
manner whatsoever, and may deliver to the Trustee (or to any other Person for
delivery to the Trustee) for cancellation any Securities previously
authenticated hereunder which the Company has not issued and sold, and all
Securities so delivered shall be promptly canceled by the Trustee. No Securities
shall be authenticated in lieu of or in exchange for any Securities canceled as
provided in this Section, except as expressly permitted by this Indenture. All
canceled Securities held by the Trustee shall be disposed of as directed by a
Company Order or, in the absence of such Company Order, in accordance with the
Trustee's customary practices. Acquisition by the Company of any Security shall
not operate as a redemption or satisfaction of the indebtedness represented by
such Security unless and until the same is delivered to the Trustee for
cancellation.

         SECTION 310. COMPUTATION OF INTEREST.

         Except as otherwise specified as contemplated by Section 301 for
Securities of any series, interest on the Securities of each series shall be
computed on the basis of a 360-day year of twelve 30-day months.

         SECTION 311. DESIGNATION AS SENIOR DEBT.

         The Company hereby confirms the designation of the Securities as
"Senior Debt" for the purposes of any securities of the Company that may be
issued pursuant to the Subordinated Indenture.

         SECTION 312. CUSIP OR CINS NUMBERS.

         The Company in issuing the Securities may use "CUSIP" or "CINS" numbers
(if then generally in use, and in addition to the other identification numbers
printed on the Securities), and, if so, the Trustee shall use "CUSIP" or "CINS"
numbers in notices of redemption as a convenience to Holders; provided, however,
that any such notice may state that no representation is made as to the
correctness of such "CUSIP" or "CINS" numbers either as printed on the
Securities or as contained in any notice of a redemption and that reliance may
be placed only on the other identification numbers printed on the Securities,
and any such redemption shall not be affected by any defect in or omission of
such "CUSIP" or "CINS" numbers.

                                       36
<PAGE>

                                  ARTICLE FOUR

                           SATISFACTION AND DISCHARGE

         SECTION 401. SATISFACTION AND DISCHARGE OF INDENTURE.

         This Indenture shall upon Company Request cease to be of further effect
(except as to any surviving rights of conversion, registration of transfer or
exchange of Securities of a series herein expressly provided for) with respect
to Securities of any series, and the Trustee, at the expense of the Company,
shall execute proper instruments acknowledging satisfaction and discharge of
this Indenture with respect to a series, when

                  (1) either

                           (A) all Securities of such series theretofore
                  authenticated and delivered (other than (i) Securities which
                  have been destroyed, lost or stolen and which have been
                  replaced or paid as provided in Section 306 and (ii)
                  Securities of such series for whose payment money has
                  theretofore been deposited in trust or segregated and held in
                  trust by the Company and thereafter repaid to the Company or
                  discharged from such trust, as provided in Section 1006) have
                  been delivered to the Trustee for cancellation; or

                           (B) all such Securities of such series not
                  theretofore delivered to the Trustee for cancellation

                                    (i) have become due and payable, or

                                    (ii) will become due and payable at their
                           Stated Maturity within one year, or

                                    (iii) are to be called for redemption within
                           one year under arrangements reasonably satisfactory
                           to the Trustee for the giving of notice of redemption
                           by the Trustee in the name, and at the expense, of
                           the Company, and the Company, in the case of (i),
                           (ii) or (iii) above, has deposited or caused to be
                           deposited with the Trustee in trust irrevocably (A)
                           money (in [United States dollars]) in an amount, or
                           (B) U.S. Government Obligations that through the
                           scheduled payment of principal and interest in
                           respect thereof in accordance with their terms will
                           provide, not later than one day before the due date
                           of any payment, money in an amount, or (C) a
                           combination thereof, sufficient, in the opinion of a
                           nationally recognized firm of independent public
                           accountants expressed in a written certification
                           thereof delivered to the Trustee, to pay and
                           discharge the entire indebtedness on such Securities
                           of such series not theretofore delivered to the
                           Trustee for cancellation, for principal of (and
                           premium, if any) and interest to the date of such
                           deposit (in the case of Securities of such series
                           which have become due and payable) or to the Stated
                           Maturity or Redemption Date, as the case may be;

                                       37
<PAGE>

                  (2) the Company has paid or caused to be paid all other sums
         payable hereunder by the Company; and

                  (3) the Company has delivered to the Trustee an Officers'
         Certificate and an Opinion of Counsel, each stating that all conditions
         precedent herein provided for relating to the satisfaction and
         discharge of this Indenture with respect to such series have been
         complied with.

         In the event there are Securities of two or more series outstanding
hereunder, the Trustee shall be required to execute an instrument acknowledging
satisfaction and discharge of this Indenture only if requested to do so with
respect to Securities of a particular series as to which it is Trustee and if
the other conditions thereto are met. In the event that there are two or more
Trustees hereunder, then the effectiveness of any such instrument shall be
conditioned upon receipt of such instruments from all Trustees hereunder.

         Notwithstanding the satisfaction and discharge of this Indenture with
respect to a particular series, the obligations of the Company to the Trustee
under Section 607, the obligations of the Company to any Authenticating Agent
under Section 614 and, if money shall have been deposited with the Trustee
pursuant to subclause (B) of Clause (1) of this Section, the obligations of the
Trustee under Section 402 and the last paragraph of Section 1006 shall survive
until there are no Securities Outstanding with respect to a particular series
and the obligations of the Company and the Trustee with respect to all other
series of Securities shall survive.

         SECTION 402. APPLICATION OF TRUST FUND.

         Subject to provisions of the last paragraph of Section 1006, all
amounts deposited with the Trustee pursuant to Section 401 shall be held in
trust and applied by it, in accordance with the provisions of the Securities and
this Indenture, to the payment, either directly or through any Paying Agent
(including the Company acting as its own Paying Agent) as the Trustee may
determine, to the Persons entitled thereto, of the principal and any premium and
interest for whose payment such funds have been deposited with the Trustee.

                                  ARTICLE FIVE

                                    REMEDIES

         SECTION 501. EVENTS OF DEFAULT.

         "Event of Default" whenever used with respect to Securities of any
series means any one of the following events and such other events as may be
established with respect to the Securities of such series as contemplated by
Section 301 hereof:

                  (1) Default in the payment of any installment of interest upon
         any of the Securities of such series as and when the same shall become
         due and payable, and continuance of such default for a period of 30
         days; or

                                       38
<PAGE>

                  (2) Default in the payment of the principal, premium, if any,
         on any of the Securities of such series as and when the same shall
         become due and payable either at maturity, upon redemption, by
         declaration of acceleration or otherwise and continuance of such
         default for a period of 10 days; or

                  (3) Default in the making of any sinking fund payment, whether
         mandatory or optional, as and when the same shall become due and
         payable by the terms of the Securities of such series and continuance
         of such default for a period of 10 days; or

                  (4) Failure on the part of the Company or any Guarantor (if
         applicable) duly to observe or perform any other of the covenants or
         agreements on the part of the Company or any Guarantor (if applicable)
         contained in this Indenture (other than those set forth exclusively in
         the terms of any other particular series of Securities established as
         contemplated by this Indenture for the benefit of such other series)
         and written notice of such failure, stating that such notice is a
         "Notice of Default" hereunder, and requiring the Company and any
         Guarantor (if applicable) to remedy the same, shall have been given by
         registered or certified mail, return receipt requested, to the Company
         and any Guarantor (if applicable) by the Trustee, or to the Company,
         any Guarantor (if applicable) and the Trustee by the Holders of at
         least 25% in aggregate principal amount of the Outstanding Securities
         of that series, and such failure shall have continued unremedied for a
         period of 90 days after the date of the Company's receipt of such
         Notice of Default; or

                  (5) A decree or order by a court having jurisdiction in the
         premises shall have been entered adjudging the Company or any Guarantor
         (if applicable) bankrupt or insolvent, or approving as properly filed a
         petition seeking reorganization, arrangement, adjustment or composition
         of the Company or any Guarantor (if applicable) under any applicable
         Bankruptcy Law or similar law, and such decree or order shall have
         continued undischarged and unstayed for a period of 90 days; or a
         decree or order of a court having jurisdiction in the premises for the
         appointment of a receiver, liquidator, trustee, assignee, sequestrator
         or similar official in bankruptcy or insolvency of the Company, any
         Guarantor (if applicable) or of all or substantially all of any of
         their respective property, or for the winding up or liquidation of the
         Company's or any Guarantor's (if applicable) affairs, shall have been
         entered, and such decree or order shall have continued undischarged and
         unstayed for a period of 90 days; or

                  (6) The Company or any Guarantor (if applicable) shall
         institute proceedings to be adjudicated a voluntary bankrupt, or shall
         consent to the filing of a bankruptcy proceeding against it, or shall
         file a petition or answer or consent seeking reorganization,
         arrangement, adjustment or composition under any applicable Bankruptcy
         Law or similar law, or shall consent to the filing of any such
         petition, or shall consent to the appointment of a receiver,
         liquidator, trustee, assignee, sequestrator or similar official in
         bankruptcy or insolvency of the Company, any Guarantor (if applicable)
         or of all or substantially all of any of their property, or shall make
         an assignment for the benefit of creditors, or shall admit in writing
         the Company's or any Guarantor's (if applicable) inability to pay its
         respective debts generally as they become due and the Company's or any
         Guarantor's (if applicable) willingness to be adjudged a bankrupt, or
         corporate action shall be taken by

                                       39
<PAGE>

         the Company or any Guarantor (if applicable) in furtherance of any of
         the aforesaid purposes; or

                  (7) If applicable, the Guarantee ceases to be in full force
         and effect or becomes unenforceable or invalid or is declared null and
         void (other than in accordance with the terms of such Guarantee) or any
         Guarantor denies or disaffirms its obligations under such Guarantee; or

                  (8) Any other Event of Default provided with respect to
         Securities of that series.

         The Trustee shall not be charged with knowledge of any default (as
defined in Section 602) or Event of Default unless written notice thereof shall
have been given to the Trustee by the Company, the Paying Agent of that series
(provided that no such notice shall be required to be given if the Trustee acts
as Paying Agent of such series), or by Holders of at least 25% in aggregate
principal amount of the Outstanding Securities of that series.

         SECTION 502. ACCELERATION OF MATURITY; RESCISSION AND ANNULMENT.

         If an Event of Default under Section 501(5) or 501(6) with respect to
Securities of any series at the time Outstanding occurs and is continuing, then
the principal amount (or, if any of the Securities of that series are Original
Issue Discount Securities, such portion of the principal amount of such
Securities as may be specified in the terms thereof) of all of the Securities of
that series shall become immediately due and payable.

         If any other Event of Default with respect to Securities of any series
at the time Outstanding occurs and is continuing, then in every such case the
Trustee or the Holders of not less than 25% in principal amount of the
Outstanding Securities of that series may declare the principal amount (or, if
any of the Securities of that series are Original Issue Discount Securities,
such portion of the principal amount of such Securities as may be specified in
the terms thereof) of all of the Securities of that series to be due and payable
immediately, by a notice in writing to the Company (and to the Trustee if given
by Holders), and upon any such declaration such principal amount (or specified
amount) shall become immediately due and payable.

         At any time after such a declaration of acceleration with respect to
Securities of any series has been made and before a judgment or decree for
payment of the money due has been obtained by the Trustee as hereinafter in this
Article provided, the Holders of a majority in principal amount of the
Outstanding Securities of that series, by written notice to the Company and the
Trustee, may rescind and annul such declaration and its consequences if

                  (1) the Company or any Guarantor (if applicable) has paid or
         deposited with the Trustee a sum sufficient to pay

                           (A) all overdue interest on all Securities of that
                  series,

                                       40
<PAGE>

                           (B) the principal of (and premium, if any, on) any
                  Securities of that series which have become due otherwise than
                  by such declaration of acceleration and any interest thereon
                  at the rate or rates prescribed therefor in such Securities,

                           (C) to the extent that payment of such interest is
                  lawful, interest upon overdue interest at the rate or rates
                  prescribed therefor in such Securities, and

                           (D) all sums paid or advanced by the Trustee
                  hereunder and the reasonable compensation, expenses,
                  disbursements and advances of the Trustee, its agents and
                  counsel; and

                  (2) all Events of Default with respect to Securities of that
         series other than the non-payment of the principal of and interest, if
         any, on the Securities of that series which have become due solely by
         such declaration of acceleration, have been cured or waived as provided
         in Section 513.

No such rescission shall affect any subsequent default or impair any right
consequent thereon.

         SECTION 503. COLLECTION OF INDEBTEDNESS AND SUITS FOR ENFORCEMENT BY
TRUSTEE.

         The Company covenants that if

                  (1) default is made in the payment of any interest on any
         Security when such interest becomes due and payable and such default
         continues for a period of 30 days, or

                  (2) default is made in the payment of the principal of (or
         premium, if any, on) any Security at the Maturity thereof and
         continuance of such default for a period of 10 days,

the Company will, upon written demand of the Trustee, pay to it, for the benefit
of the Holders of such Securities, the whole amount then due and payable on such
Securities for principal, premium, if any, and interest and, to the extent that
payment of such interest shall be legally enforceable, interest, if any, on any
overdue principal, premium and on any overdue interest, at the rate or rates
prescribed therefor in such Securities, and, in addition thereto, such further
amount as shall be sufficient to cover the costs and expenses of collection,
including the reasonable compensation, expenses, disbursements and advances of
the Trustee, its agents and counsel, and other amounts due the Trustee under
Section 607, except such costs and expenses as are a result of negligence or bad
faith on the part of the Trustee. Until such demand is made by the Trustee, the
Company may pay the principal, premium, if any, and interest, if any, on the
Securities of any series to the registered Holders, whether or not the
Securities of such series are overdue.

         If an Event of Default with respect to Securities of any series occurs
and is continuing, the Trustee may in its discretion proceed to protect and
enforce its rights and the rights of the Holders of Securities of such series by
such appropriate judicial proceedings as the Trustee shall deem most effectual
to protect and enforce any such rights, whether for the specific enforcement

                                       41
<PAGE>

of any covenant or agreement in this Indenture or in aid of the exercise of any
power granted herein, or to enforce any other proper remedy.

         SECTION 504. TRUSTEE MAY FILE PROOFS OF CLAIM.

         In case of any judicial proceeding relative to the Company, any
Guarantor (if applicable) or any other obligor upon the Securities, its property
or its creditors, the Trustee shall be entitled and empowered, by intervention
in such proceeding or otherwise, to take any and all actions authorized under
the Trust Indenture Act in order to have claims of the Holders and the Trustee
allowed in any such proceeding. In particular, the Trustee shall be authorized
to collect and receive any moneys or other property payable or deliverable on
any such claims and to distribute the same, and any custodian, receiver,
assignee, trustee, liquidator, sequestrator or other similar official in any
such judicial proceeding is hereby authorized by each Holder to make such
payments to the Trustee and, in the event that the Trustee shall consent to the
making of such payments directly to the Holders, to pay to the Trustee any
amount due it for the reasonable compensation, expenses, disbursements and
advances of the Trustee, its agents and counsel, and any other amounts due the
Trustee under Section 607, except such costs and expenses as are a result of
negligence or bad faith on the part of the Trustee.

         No provision of this Indenture shall be deemed to authorize the Trustee
to authorize or consent to or accept or adopt on behalf of any Holder any plan
of reorganization, arrangement, adjustment or composition affecting the
Securities or the Guarantee (if applicable) or the rights of any Holder thereof
or to authorize the Trustee to vote in respect of the claim of any Holder in any
such proceeding; provided, however, that the Trustee may, on behalf of the
Holders, vote for the election of a trustee in bankruptcy or similar official
and be a member of a creditors' or other similar committee.

         SECTION 505. TRUSTEE MAY ENFORCE CLAIMS WITHOUT POSSESSION OF
SECURITIES.

         All rights of action and claims under this Indenture or the Securities
may be prosecuted and enforced by the Trustee without the possession of any of
the Securities or the production thereof in any proceeding relating thereto, and
any such proceeding instituted by the Trustee shall be brought in its own name
as trustee of an express trust, and any recovery of judgment shall, after
provision for the payment of the reasonable compensation, expenses,
disbursements and advances of the Trustee, its agents and counsel except such
costs and expenses, as are a result of negligence or bad faith on the part of
the Trustee, be for the ratable benefit of the Holders of the Securities in
respect of which such judgment has been recovered.

         SECTION 506. APPLICATION OF MONEY COLLECTED.

         Any money collected by the Trustee pursuant to this Article shall be
applied in the following order, at the date or dates fixed by the Trustee and,
in case of the distribution of such money on account of principal, premium, if
any, or interest, if any, upon presentation of the Securities and the notation
thereon of the payment if only partially paid and upon surrender thereof if
fully paid:

                                       42
<PAGE>

                  FIRST: To the payment of all amounts due the Trustee under
         Section 607;

                  SECOND: To the payment of the amounts then due and unpaid for
         principal, premium, if any, and interest, if any, on the Securities in
         respect of which or for the benefit of which such money has been
         collected, ratably, without preference or priority of any kind,
         according to the amounts due and payable on such Securities for
         principal, premium, if any, and interest, if any, respectively; and

                  THIRD: To the payment of the remainder, if any, to the
         Company, any Guarantor (if applicable) or any other Person lawfully
         entitled thereto.

         SECTION 507. LIMITATION ON SUITS.

         No Holder of any Security of any series shall have any right to
institute any proceeding, judicial or otherwise, with respect to this Indenture
(including, if applicable, the Guarantee), or for the appointment of a receiver
or trustee, or for any other remedy hereunder, unless

                  (1) such Holder has previously given written notice to the
         Trustee of a continuing Event of Default with respect to the Securities
         of that series;

                  (2) the Holders of not less than 25% in principal amount of
         the Outstanding Securities of that series shall have made written
         request to the Trustee to institute proceedings in respect of such
         Event of Default in its own name as Trustee hereunder;

                  (3) such Holder or Holders have offered to the Trustee
         indemnity reasonably satisfactory in form and substance to the Trustee
         against the costs, expenses and liabilities to be incurred in
         compliance with such request;

                  (4) the Trustee for 60 days after its receipt of such notice,
         request and offer of indemnity has failed to institute any such
         proceeding; and

                  (5) no direction inconsistent with such written request has
         been given to the Trustee during such 60-day period by the Holders of a
         majority in principal amount of the Outstanding Securities of that
         series;

it being understood and intended that no one or more of such Holders shall have
any right in any manner whatever by virtue of, or by availing of, any provision
of this Indenture to affect, disturb or prejudice the rights of any other of
such Holders, or to obtain or to seek to obtain priority or preference over any
other of such Holders or to enforce any right under this Indenture, except in
the manner herein provided and for the equal and ratable benefit of all of such
Holders.

         SECTION 508. UNCONDITIONAL RIGHT OF HOLDERS TO RECEIVE PRINCIPAL,
         PREMIUM AND INTEREST AND TO CONVERT.

         Notwithstanding any other provision in this Indenture, the Holder of
any Security shall have the right, which is absolute and unconditional, to
receive payment of the principal,

                                       43
<PAGE>

premium, if any, and (subject to Section 307) any interest on such Security on
the Stated Maturity or Maturities expressed in such Security (or, in the case of
redemption, on the Redemption Date) and to convert such Securities in accordance
with the terms thereof and to institute suit for the enforcement of any such
payment or such right of conversion, and such rights shall not be impaired
without the consent of such Holder.

         SECTION 509. RESTORATION OF RIGHTS AND REMEDIES.

         If the Trustee or any Holder has instituted any proceeding to enforce
any right or remedy under this Indenture and such proceeding has been
discontinued or abandoned for any reason, or has been determined adversely to
the Trustee or to such Holder, then and in every such case, subject to any
determination in such proceeding, the Company, any Guarantor (if applicable),
the Trustee and the Holders shall be restored severally and respectively to
their former positions hereunder and thereafter all rights and remedies of the
Trustee and the Holders shall continue as though no such proceeding had been
instituted.

         SECTION 510. RIGHTS AND REMEDIES CUMULATIVE.

         Except as otherwise provided with respect to the replacement or payment
of mutilated, destroyed, lost or stolen Securities in the last paragraph of
Section 306, no right or remedy herein conferred upon or reserved to the Trustee
or to the Holders is intended to be exclusive of any other right or remedy, and
every right and remedy shall, to the extent permitted by law, be cumulative and
in addition to every other right and remedy given hereunder or now or hereafter
existing at law or in equity or otherwise. The assertion or employment of any
right or remedy hereunder, or otherwise, shall not prevent the concurrent
assertion or employment of any other appropriate right or remedy.

         SECTION 511. DELAY OR OMISSION NOT WAIVER.

         No delay or omission of the Trustee or of any Holder of any Securities
to exercise any right or remedy accruing upon any Event of Default shall impair
any such right or remedy or constitute a waiver of any such Event of Default or
an acquiescence therein. Subject to Section 507, every right and remedy given by
this Article or by law to the Trustee or to the Holders may be exercised from
time to time, and as often as may be deemed expedient, by the Trustee or by the
Holders, as the case may be.

         SECTION 512. CONTROL BY HOLDERS.

         With respect to the Securities of any series, the Holders of not less
than a majority in principal amount of the Outstanding Securities of such series
shall have the right to direct the time, method and place of conducting any
proceeding for any remedy available to the Trustee, or exercising any trust or
power conferred on the Trustee, with respect to the Securities of such series;
provided that

                  (1) such direction shall not be in conflict with any rule of
         law or with this Indenture, and

                                       44
<PAGE>

                  (2) the Trustee may take any other action deemed proper by the
         Trustee which is not inconsistent with such direction.

         SECTION 513. WAIVER OF PAST DEFAULTS.

         The Holders of not less than a majority in principal amount of the
Outstanding Securities of any series may on behalf of the Holders of all the
Securities of such series waive any past default hereunder with respect to such
series and its consequences, except a default

                  (1) in the payment of the principal, premium, if any, or
         interest, if any, on any Security of such series, or

                  (2) in respect of a covenant or provision hereof which under
         Article Nine cannot be modified or amended without the consent of the
         Holder of each Outstanding Security of such series affected.

         Upon any such waiver, such default shall cease to exist, and any Event
of Default arising therefrom shall be deemed to have been cured, for every
purpose of this Indenture; but no such waiver shall extend to any subsequent or
other default or impair any right consequent thereon.

         SECTION 514. UNDERTAKING FOR COSTS.

         In any suit for the enforcement of any right or remedy under this
Indenture, or in any suit against the Trustee for any action taken, suffered or
omitted by it as Trustee, a court may require any party litigant in such suit to
file an undertaking to pay the costs of such suit, and may assess costs against
any such party litigant, in the manner and to the extent provided in the Trust
Indenture Act; provided, however, that neither this Section 514 nor the Trust
Indenture Act will be deemed to authorize any court to require such an
undertaking or to make such an assessment in any suit instituted by the Company,
any Guarantor (if applicable) or the Trustee.

                                   ARTICLE SIX

                                   THE TRUSTEE

         SECTION 601. CERTAIN DUTIES AND RESPONSIBILITIES.

         The duties and responsibilities of the Trustee shall be as provided by
the Trust Indenture Act.

                  (a) If an Event of Default with respect to Securities of any
         series at the time Outstanding has occurred and is continuing, the
         Trustee shall exercise such of the rights and powers vested in it by
         this Indenture, and use the same degree of care and skill in its
         exercise, as a prudent person would exercise or use under the
         circumstances in the conduct of his or her own affairs.

                                       45
<PAGE>

                  (b) Except during the continuance of an Event of Default:

                           (1) the Trustee need perform only those duties that
                  are specifically set forth in this Indenture and no others and
                  no implied covenants or obligations shall be read into this
                  Indenture against the Trustee; and

                           (2) the Trustee may conclusively rely, as to the
                  truth of the statements and the correctness of the opinions
                  expressed therein, in the absence of bad faith on its part,
                  upon certificates or opinions furnished to the Trustee and
                  conforming to the requirements of this Indenture. The Trustee,
                  however, shall examine such certificates and opinions to
                  determine whether or not they conform to the requirements of
                  this Indenture but need not verify the accuracy of the
                  contents thereof.

                  (c) The Trustee may not be relieved from liability for its own
         negligent action, its own negligent failure to act, or its own willful
         misconduct, except that:

                           (1) this paragraph does not limit the effect of
                  paragraph (b) of this Section;

                           (2) the Trustee shall not be liable for any error of
                  judgment made in good faith by a Responsible Officer, unless
                  it is proved that the Trustee was negligent in ascertaining
                  the pertinent facts; and

                           (3) the Trustee shall not be liable with respect to
                  any action it takes or omits to take in good faith in
                  accordance with a direction received by it pursuant to Section
                  512.

                  (d) Every provision of this Indenture that in any way relates
         to the Trustee is subject to paragraphs (a), (b) and (c) of this
         Section.

                  (e) The Trustee may refuse to perform any duty or exercise any
         right or power unless it receives indemnity reasonably satisfactory to
         it against any loss, liability or expense.

                  (f) The Trustee shall not be liable for interest on any money
         received by it except as the Trustee may agree in writing with the
         Company and each Guarantor (if applicable). Money held in trust by the
         Trustee need not be segregated from other funds, except to the extent
         required by law.

Notwithstanding the foregoing, no provision of this Indenture shall require the
Trustee to expend or risk its own funds or otherwise incur any financial
liability in the performance of any of its duties hereunder, or in the exercise
of any of its rights or powers, if it shall have reasonable grounds for
believing that repayment of such funds or adequate indemnity against such risk
or liability is not reasonably assured to it. Whether or not therein expressly
so provided, every

                                       46
<PAGE>

provision of this Indenture relating to the conduct or affecting the liability
of or affording protection to the Trustee shall be subject to the provisions of
this Section.

         SECTION 602. NOTICE OF DEFAULTS.

         If a default or an Event of Default occurs and is continuing hereunder
with respect to Securities of any series, and if such default or Event of
Default is known to a Responsible Officer of the Trustee, the Trustee shall mail
the Holders of Securities of such series notice of such default within 90 days
after it occurs; provided, however, that in the case of any default of the
character specified in Section 501(4) with respect to Securities of such series,
no such notice to Holders shall be given until at least 30 days after the
occurrence thereof. Except in the case of a default in payment on any Security
of any series or in the payment of any sinking fund installment, the Trustee may
withhold notice if and so long as a trust committee of directors or Responsible
Officers of the Trustee in good faith determines that withholding the notice is
in the interest of Holders of Securities of such series. For the purpose of this
Section, the term "default" means any event which is, or after notice or lapse
of time or both would become, an Event of Default with respect to Securities of
such series.

         SECTION 603. CERTAIN RIGHTS OF TRUSTEE.

         Subject to the provisions of Section 601:

                  (a) the Trustee may rely and shall be protected in acting or
         refraining from acting upon any resolution, certificate, statement,
         instrument, opinion, report, notice, request, direction, consent,
         order, bond, debenture, note, other evidence of indebtedness or other
         paper or document believed by it to be genuine and to have been signed
         or presented by the proper party or parties;

                  (b) any request or direction of the Company or any Guarantor
         mentioned herein shall be sufficiently evidenced by a Company Request
         or Company Order and any resolution of the Board of Directors may be
         sufficiently evidenced by a Board Resolution;

                  (c) whenever in the administration of this Indenture the
         Trustee shall deem it desirable that a matter be proved or established
         prior to taking, suffering or omitting any action hereunder, the
         Trustee (unless other evidence be herein specifically prescribed) may,
         in the absence of bad faith on its part, rely upon an Officers'
         Certificate;

                  (d) the Trustee may consult with counsel and the written
         advice of such Counsel or any Opinion of Counsel shall be full and
         complete authorization and protection in respect of any action taken,
         suffered or omitted by it hereunder in good faith and in reliance
         thereon;

                  (e) the Trustee shall be under no obligation to exercise any
         of the rights or powers vested in it by this Indenture at the request
         or direction of any of the Holders pursuant to this Indenture, unless
         such Holders shall have offered to the Trustee security

                                       47
<PAGE>

         or indemnity reasonably satisfactory in form and substance to the
         Trustee against the costs, expenses and liabilities which might be
         incurred by it in compliance with such request or direction;

                  (f) the Trustee shall not be bound to make any investigation
         into the facts or matters stated in any resolution, certificate,
         statement, instrument, opinion, report, notice, request, direction,
         consent, order, bond, debenture, note, other evidence of indebtedness
         or other paper or document, but the Trustee, in its discretion, may
         make such further inquiry or investigation into such facts or matters
         as it may see fit, and, if the Trustee shall determine to make such
         further inquiry or investigation, it shall upon reasonable notice to
         the Company or any Guarantor (as applicable) be entitled to examine the
         books, records and premises of the Company or any Guarantor (as
         applicable) personally or by agent or attorney at a time and place
         acceptable to the Company or any Guarantor, as the case may be;

                  (g) the Trustee may execute any of the trusts or powers
         hereunder or perform any duties hereunder either directly or by or
         through agents or attorneys and the Trustee shall not be responsible
         for any misconduct or negligence on the part of any agent or attorney
         appointed with due care by it hereunder;

                  (h) the permissive right of the Trustee to take or refrain
         from taking any actions enumerated in this Indenture shall not be
         construed as a duty and the Trustee shall not be answerable for taking
         or refraining from taking such actions other than for its own
         negligence or willful misconduct; and

                  (i) the Trustee shall not be liable for any action it takes or
         omits to take in good faith which it reasonably believes to be
         authorized or within its rights or powers conferred upon it by this
         Indenture.

         SECTION 604. NOT RESPONSIBLE FOR RECITALS OR ISSUANCE OF SECURITIES.

         The recitals contained herein and in the Securities, except the
Trustee's certificates of authentication, shall be taken as the statements of
the Company or any Guarantor (if applicable), and the Trustee or any
Authenticating Agent assumes no responsibility for their correctness. The
Trustee makes no representations as to the validity or sufficiency of this
Indenture or of the Securities. The Trustee or any Authenticating Agent shall
not be accountable for the use or application by the Company of Securities or
the proceeds thereof.

         SECTION 605. MAY HOLD SECURITIES.

         The Trustee, any Authenticating Agent, any Paying Agent, any Security
Registrar or any other agent of the Company or any Guarantor (if applicable), in
its individual or any other capacity, may become the owner or pledgee of
Securities and, subject to Sections 608 and 613, may otherwise deal with the
Company with the same rights it would have if it were not Trustee,
Authenticating Agent, Paying Agent, Security Registrar or such other agent.

                                       48
<PAGE>

         SECTION 606. MONEY HELD IN TRUST.

         Money held by the Trustee in trust hereunder need not be segregated
from other funds except to the extent required by law. The Trustee shall be
under no liability for interest on any money received by it hereunder except as
otherwise agreed in writing with the Company or any Guarantor (if applicable).

         SECTION 607. COMPENSATION AND REIMBURSEMENT.

         The Company agrees

                  (1) to pay to the Trustee from time to time reasonable
         compensation for all services rendered by it hereunder (which
         compensation shall not be limited by any provision of law in regard to
         the compensation of a trustee of an express trust);

                  (2) except as otherwise expressly provided herein, to
         reimburse the Trustee upon its written request for all reasonable
         expenses, disbursements and advances incurred or made by the Trustee in
         accordance with any provision of this Indenture (including the
         reasonable compensation, and reasonable expenses and disbursements of
         its agents and outside counsel), except any such expense, disbursement
         or advance as may be attributable to its negligence or bad faith; and

                  (3) to indemnify the Trustee for, and to hold it harmless
         against, any loss, liability or expense (including the reasonable fees
         and expenses of legal counsel) incurred without negligence or bad faith
         on its part, arising out of or in connection with the acceptance or
         administration of the trust or trusts and the performance of its duties
         hereunder, including the reasonable costs and expenses of defending
         itself against any claim or liability in connection with the exercise
         or performance of any of its powers or duties hereunder.

         To secure the Company's payment obligations under this Section, the
Trustee shall have a lien prior to the Securities on all money or property of
the Company held or collected by the Trustee in its capacity as Trustee or as
Paying Agent hereunder (but not in any other capacity), except that held in
trust to pay principal of (and premium, if any) or interest on particular
Securities.

         When the Trustee incurs expenses or renders services after an Event of
Default specified in Section 501(5) or (6) occurs with respect to any series of
Securities, the expenses and the compensation for the services are intended to
constitute expenses of administration under any Bankruptcy Law or similar law.

         The Company's obligations under this Section 607 and any lien arising
hereunder shall survive the resignation or removal of the Trustee, the discharge
of the Company's obligations pursuant to Article Four or Article Thirteen hereof
and the termination of this Indenture.

                                       49
<PAGE>

         SECTION 608. DISQUALIFICATION; CONFLICTING INTERESTS.

         If the Trustee has or shall acquire any conflicting interest within the
meaning of the Trust Indenture Act, the Trustee shall either eliminate such
interest or resign, to the extent and in the manner provided by, and subject to
the provisions of, the Trust Indenture Act and this Indenture. To the extent
permitted by such Act, the Trustee shall not be deemed to have a conflicting
interest by virtue of being a trustee under this Indenture with respect to
Securities of more than one series.

         SECTION 609. CORPORATE TRUSTEE REQUIRED; ELIGIBILITY.

         There shall at all times be a Trustee hereunder which shall be a Person
that is eligible pursuant to the Trust Indenture Act to act as such and has a
combined capital and surplus of at least $50,000,000 or is a subsidiary of a
corporation which shall be a Person that has a combined capital and surplus of
at least $50,000,000 and which unconditionally and irrevocably guarantees the
obligations of the Trustee hereunder upon terms satisfactory to the Company. If
such Person publishes reports of condition at least annually, pursuant to law or
to the requirements of said supervising or examining authority, then for the
purposes of this Section, the combined capital and surplus of such Person shall
be deemed to be its combined capital and surplus as set forth in its most recent
report of condition so published. If at any time the Trustee shall cease to be
eligible in accordance with the provisions of this Section, it shall resign
immediately in the manner and with the effect hereinafter specified in this
Article.

         SECTION 610. RESIGNATION AND REMOVAL; APPOINTMENT OF SUCCESSOR.

                  (a) No resignation or removal of the Trustee and no
         appointment of a successor Trustee pursuant to this Article shall
         become effective until the acceptance of appointment by the successor
         Trustee in accordance with the applicable requirements of Section 611.

                  (b) The Trustee may resign at any time with respect to the
         Securities of one or more series by giving written notice thereof to
         the Company. If the instrument of acceptance by a successor Trustee
         required by Section 611 shall not have been delivered to the Trustee
         within 30 days after the giving of such notice of resignation, the
         resigning Trustee may petition any court of competent jurisdiction for
         the appointment of a successor Trustee with respect to the Securities
         of such series.

                  (c) The Trustee may be removed at any time with respect to the
         Securities of any series by Act of the Holders of a majority in
         principal amount of the Outstanding Securities of such series,
         delivered to the Trustee and to the Company.

                  (d) If at any time:

                           (1) the Trustee shall fail to comply with Section 608
                  after written request therefor by the Company or by any Holder
                  who has been a bona fide Holder of a Security for at least six
                  months, or

                                       50
<PAGE>

                           (2) the Trustee shall cease to be eligible under
                  Section 609 and shall fail to resign after written request
                  therefor by the Company or by any such Holder, or

                           (3) the Trustee shall become incapable of acting or
                  shall be adjudged a bankrupt or insolvent or a receiver of the
                  Trustee or of its property shall be appointed or any public
                  officer shall take charge or control of the Trustee or of its
                  property or affairs for the purpose of rehabilitation,
                  conservation or liquidation,

                  then, in any such case, (i) the Company by a Board Resolution
                  may remove the Trustee with respect to all Securities, or (ii)
                  subject to Section 514, any Holder who has been a bona fide
                  Holder of a Security for at least six months may, on behalf of
                  itself and all others similarly situated, petition any court
                  of competent jurisdiction for the removal of the Trustee with
                  respect to all Securities and the appointment of a successor
                  Trustee or Trustees.

                  (e) If the Trustee shall resign, be removed or be incapable of
         acting, or if a vacancy shall occur in the office of Trustee for any
         cause, with respect to the Securities of one or more series, the
         Company, by a Board Resolution, shall promptly appoint a successor
         Trustee or Trustees with respect to the Securities of that or those
         series (it being understood that any such successor Trustee may be
         appointed with respect to the Securities of one or more or all of such
         series and that at any time there shall be only one Trustee with
         respect to the Securities of any particular series) and shall comply
         with the applicable requirements of Section 611. If, within one year
         after such resignation, removal or incapability, or the occurrence of
         such vacancy, a successor Trustee with respect to the Securities of any
         series shall be appointed by Act of the Holders of a majority in
         principal amount of the Outstanding Securities of such series delivered
         to the Company and the retiring Trustee, the successor Trustee so
         appointed shall, forthwith upon its acceptance of such appointment in
         accordance with the applicable requirements of Section 611, become the
         successor Trustee with respect to the Securities of such series and to
         that extent supersede the successor Trustee appointed by the Company.
         If no successor Trustee with respect to the Securities of any Series
         shall have been so appointed by the Company or the Holders and accepted
         appointment in the manner required by Section 611, any Holder who has
         been a bona fide Holder of a Security of such series for at least six
         months may, on behalf of itself and all others similarly situated,
         petition any court of competent jurisdiction for the appointment of a
         successor Trustee with respect to the Securities of such series.

                  (f) The Company shall give notice of each resignation and each
         removal of the Trustee with respect to the Securities of any series and
         each appointment of a successor Trustee with respect to the Securities
         of any series to all Holders of Securities of such series in the manner
         provided in Section 106. Each notice shall include the name of the
         successor Trustee with respect to the Securities of such series and the
         address of its Corporate Trust Office.

                                       51
<PAGE>

         SECTION 611. ACCEPTANCE OF APPOINTMENT BY SUCCESSOR.

                  (a) In case of the appointment hereunder of a successor
         Trustee with respect to all Securities, every such successor Trustee so
         appointed shall execute, acknowledge and deliver to the Company, any
         Guarantor (if applicable) and to the retiring Trustee an instrument
         accepting such appointment, and thereupon the resignation or removal of
         the retiring Trustee shall become effective and such successor Trustee,
         without any further act, deed or conveyance, shall become vested with
         all the rights, powers, trusts and duties of the retiring Trustee; but,
         on the request of the Company or any Guarantor (if applicable) or the
         successor Trustee, such retiring Trustee shall, upon payment of its
         charges, execute and deliver an instrument transferring to such
         successor Trustee all the rights, powers and trusts of the retiring
         Trustee and shall duly assign, transfer and deliver to such successor
         Trustee all property and money held by such retiring Trustee hereunder,
         subject to its lien, if any, provided for in Section 607.

                  (b) In case of the appointment hereunder of a successor
         Trustee with respect to the Securities of one or more (but not all)
         series, the Company, any Guarantor (if applicable) the retiring Trustee
         and each successor Trustee with respect to the Securities of such
         series shall execute and deliver an indenture supplemental hereto
         wherein each successor Trustee shall accept such appointment and which
         (1) shall contain such provisions as shall be necessary or desirable to
         transfer the rights, powers, trust and duties of the retiring Trustee
         with respect to the Securities of that or those series to which the
         appointment of such successor Trustee relates, (2) if the retiring
         Trustee is not retiring with respect to all Securities, shall contain
         such provisions as shall be deemed necessary or desirable to confirm
         that all the rights, powers, trusts and duties of the retiring Trustee
         with respect to the Securities of that or those series as to which the
         retiring Trustee is not retiring shall continue to be vested in the
         retiring Trustee, and (3) shall add to or change any of the provisions
         of this Indenture as shall be necessary to provide for or facilitate
         the administration of the trusts hereunder by more than one Trustee, it
         being understood that nothing herein or in such supplemental indenture
         shall constitute such Trustee co-trustees of the same trust and that
         each such Trustee shall be trustee of a trust or trusts hereunder
         separate and apart from any trust or trusts hereunder administered by
         any other such Trustee; and upon the execution and delivery of such
         supplemental indenture the resignation or removal of the retiring
         Trustee shall become effective to the extent provided therein and each
         such successor Trustee, without any further act, deed or conveyance,
         shall become vested with all the rights, powers, trusts and duties of
         the retiring Trustee with respect to the Securities of that or those
         series to which the appointment of such successor Trustee relates; but,
         on request of the Company, any Guarantor (if applicable) or any
         successor Trustee, such retiring Trustee shall duly assign, transfer
         and deliver to such successor Trustee all property and money held by
         such retiring Trustee hereunder with respect to the Securities of that
         or those series to which the appointment of such successor Trustee
         relates.

                  (c) Upon request of any such successor Trustee, the Company
         and any Guarantor (if applicable) shall execute any and all instruments
         for more fully and certainly vesting in and confirming to such
         successor Trustee all such rights, powers and trusts referred to in
         paragraphs (a) and (b) of this Section, as the case may be.

                                       52
<PAGE>

                  (d) No successor shall accept its appointment unless at the
         time of such acceptance such successor Trustee shall be qualified and
         eligible under this Article.

         SECTION 612. MERGER, CONVERSION, CONSOLIDATION OR SUCCESSION TO
         BUSINESS.

         Any corporation into which the Trustee may be merged or converted or
with which it may be consolidated, or any corporation resulting from any merger,
conversion or consolidation to which the Trustee shall be a party, or any
corporation succeeding to all or substantially all the corporate trust business
of the Trustee, shall be the successor of the Trustee hereunder, provided such
corporation shall be otherwise qualified and eligible under this Article,
without the execution or filing of any paper or any further act on the part of
any of the parties hereto. In case any Securities shall have been authenticated,
but not delivered, by the Trustee then in office, any successor by merger,
conversion or consolidation to such authenticating Trustee may adopt such
authentication and deliver the Securities so authenticated with the same effect
as if such successor Trustee had itself authenticated such Securities.

         SECTION 613. PREFERENTIAL COLLECTION OF CLAIMS AGAINST COMPANY.

         If and when the Trustee shall be or become a creditor of the Company
(or any other obligor upon the Securities), the Trustee shall be subject to the
provisions of the Trust Indenture Act regarding the collection of claims against
the Company (or any such other obligor).

         SECTION 614. APPOINTMENT OF AUTHENTICATING AGENT.

         The Trustee may with the prior written consent of the Company appoint
an Authenticating Agent or Agents with respect to one or more series of
Securities which shall be authorized to act on behalf of the Trustee to
authenticate Securities of such series issued upon original issue and upon
exchange, registration of transfer, partial conversion or partial redemption
thereof or pursuant to Section 306, and Securities so authenticated shall be
entitled to the benefits of this Indenture and shall be valid and obligatory for
all purposes as if authenticated by the Trustee hereunder. Wherever reference is
made in this Indenture to the authentication and delivery of Securities by the
Trustee or the Trustee's certificate of authentication, such reference shall be
deemed to include authentication and delivery on behalf of the Trustee by an
Authenticating Agent and a certificate of authentication executed on behalf of
the Trustee by an Authenticating Agent. Each Authenticating Agent shall be
acceptable to the Company and shall at all times be a corporation organized and
doing business under the laws of the United States of America, any state thereof
or the District of Columbia, authorized under such laws to act as Authenticating
Agent, having a combined capital and surplus of not less than $50,000,000 and
subject to supervision or examination by Federal or state authority. If such
Authenticating Agent publishes reports of condition at least annually, pursuant
to law or to the requirements of said supervising or examining authority, then
for the purposes of this Section, the combined capital and surplus of such
Authenticating Agent shall be deemed to be its combined capital and surplus as
set forth in its most recent report of condition so published. If at any time an
Authenticating Agent shall cease to be eligible in accordance with the
provisions of this Section, such Authenticating Agent shall resign immediately
in the manner and with the effect specified in this Section.

                                       53
<PAGE>

         Any corporation into which an Authenticating Agent may be merged or
converted or with which it may be consolidated, or any corporation resulting
from any merger, conversion or consolidation to which such Authenticating Agent
shall be a party, or any corporation succeeding to the corporate agency or
corporate trust business of an Authenticating Agent, shall continue to be an
Authenticating Agent, provided such corporation shall be otherwise eligible
under this Section, without the execution or filing of any paper or any further
act on the part of the Trustee or the Authenticating Agent.

         An Authenticating Agent may resign at any time by giving written notice
thereof to the Trustee and to the Company and any Guarantor (if applicable). The
Trustee or the Company may at any time terminate the agency of an Authenticating
Agent by giving written notice thereof to such Authenticating Agent and to the
Company, any Guarantor (if applicable) or the Trustee, as the case may be. Upon
receiving such a notice of resignation or upon such a termination, or in case at
any time such Authenticating Agent shall cease to be eligible in accordance with
the provisions of this Section, the Trustee may appoint a successor
Authenticating Agent which shall be acceptable to the Company and any Guarantor
(if applicable) and shall mail written notice of such appointment by first-class
mail, postage prepaid, to all Holders of Securities of the series with respect
to which such Authenticating Agent will serve, as their names and addresses
appear in the Security Register. Any successor Authenticating Agent upon
acceptance of its appointment hereunder shall become vested with all the rights,
powers and duties of its predecessor hereunder, with like effect as if
originally named as an Authenticating Agent. No successor Authenticating Agent
shall be appointed unless eligible under the provisions of this Section.

         The Company agrees to pay to each Authenticating Agent from time to
time reasonable compensation for its services under this Section.

         If an appointment with respect to one or more series is made pursuant
to this Section, the Securities of such series may have endorsed thereon, in
addition to the Trustee's certificate of authentication, an alternative
certificate of authentication in the following form:

         This is one of the Securities of the series designated therein referred
to in the within-mentioned Indenture.

                                        ------------------------------,
                                        as Trustee

                                        By
                                          ----------------------------,
                                          as Authenticating Agent

                                        By
                                          ----------------------------
                                          Authorized Officer

                                       54
<PAGE>

                                  ARTICLE SEVEN

                HOLDERS' LISTS AND REPORTS BY TRUSTEE AND COMPANY

         SECTION 701. COMPANY TO FURNISH TRUSTEE NAMES AND ADDRESSES OF HOLDERS.

         The Company will furnish or cause to be furnished to the Trustee

                  (a) semi-annually, not later than 15 days after each Regular
         Record Date in each year, a list for each series of Securities, in such
         form as the Trustee may reasonably require, of the names and addresses
         of the Holders of Securities of such series as of the preceding Regular
         Record Date, and

                  (b) at such other times as the Trustee may request in writing,
         within 30 days after the receipt by the Company of any such request, a
         list of similar form and content as of a date not more than 15 days
         prior to the time such list is furnished; provided, however, that if
         and so long as the Trustee shall be the Security Registrar for the
         Securities of a series, no such list need be furnished with respect to
         such series of Securities.

         SECTION 702. PRESERVATION OF INFORMATION; COMMUNICATIONS TO HOLDERS.

                  (a) The Trustee shall preserve, in as current a form as is
         reasonably practicable, the names and addresses of Holders contained in
         the most recent list furnished to the Trustee as provided in Section
         701 and the names and addresses of Holders received by the Trustee in
         its capacity as Security Registrar. The Trustee may destroy any list
         furnished to it as provided in Section 701 upon receipt of a new list
         so furnished.

                  (b) The rights of the Holders to communicate with other
         Holders with respect to their rights under this Indenture or under the
         Securities, and the corresponding rights and privileges of the Trustee,
         shall be as provided by the Trust Indenture Act.

                  (c) Every Holder of Securities, by receiving and holding the
         same, agrees with the Company, any Guarantor (if applicable) and the
         Trustee that none of the Company, any Guarantor (if applicable) or the
         Trustee or any of their agents shall be held accountable by reason of
         any disclosure of information as to names and addresses of Holders made
         pursuant to the Trust Indenture Act or other applicable law.

         SECTION 703. REPORTS BY TRUSTEE.

                  (a) The Trustee shall transmit to Holders such reports
         concerning the Trustee and its actions under this Indenture as may be
         required pursuant to the Trust Indenture Act at the times and in the
         manner provided pursuant thereto. To the extent that any such report is
         required by the Trust Indenture Act with respect to any 12 month
         period, such report shall cover the 12 month period ending May 15 and
         shall be transmitted by the next succeeding July 15.

                                       55
<PAGE>

                  (b) A copy of each such report shall, at the time of such
         transmission to Holders, be filed by the Trustee with each stock
         exchange upon which any Securities are listed, with the Commission and
         with the Company and any Guarantor (if applicable). The Company will
         notify the Trustee when any Securities are listed on any stock
         exchange.

         SECTION 704. REPORTS BY COMPANY.

         The Company shall file with the Trustee and the Commission, and
transmit to Holders, such information, documents and other reports, and such
summaries thereof, as may be required pursuant to the Trust Indenture Act at the
times and in the manner provided pursuant to such Act. Any information,
documents or reports required to be filed by the Company with the Commission
pursuant to Section 13 or 15(d) of the Exchange Act shall be filed with the
Trustee within 15 days after the same is so required to be filed with the
Commission.

                                  ARTICLE EIGHT

                    CONSOLIDATION, MERGER, OR SALE OF ASSETS

         SECTION 801. COMPANY AND GUARANTORS MAY CONSOLIDATE, ETC. ONLY ON
         CERTAIN TERMS.

         The Company shall not consolidate or amalgamate with or merge into any
other Person or convey, transfer or lease its properties and assets
substantially as an entirety to any Person other than a direct or indirect
wholly-owned Subsidiary of the Company unless:

                  (1) the Company is the surviving Person or the Person formed
         by such consolidation or amalgamation or into which the Company is
         merged or the Person which acquires by conveyance or transfer, or which
         leases, the properties and assets of the Company substantially as an
         entirety shall expressly assume, by an indenture supplemental hereto,
         executed and delivered to the Trustee, in form satisfactory to the
         Trustee, the due and punctual payment of the principal of and interest
         on all the Securities and the performance of every covenant of this
         Indenture on the part of the Company to be performed or observed;

                  (2) immediately after giving effect to such transaction, no
         Default or Event of Default shall have occurred and be continuing; and

                  (3) the Company has delivered to the Trustee an Officers'
         Certificate and an Opinion of Counsel, each stating that such
         consolidation, amalgamation, merger, conveyance, transfer or lease and
         such supplemental indenture comply with this Article and that all
         conditions precedent herein provided for relating to such transaction
         have been complied with.

         No Guarantor, if any of the Securities Outstanding are subject to the
Guarantee by such Guarantor, shall consolidate or amalgamate with or merge into
any other Person or convey,

                                       56
<PAGE>

transfer or lease its properties and assets substantially as an entirety to any
Person other than a direct or indirect wholly-owned Subsidiary of the Company
unless:

                  (1) any such Guarantor is the surviving Person or the Person
         formed by such consolidation or into which any such Guarantor is merged
         or the Person which acquires by conveyance or transfer, or which
         leases, the properties and assets of any such Guarantor substantially
         as an entirety shall be, only in the case of a Guarantor that is not
         one of the Foreign Entities, a Person organized and existing under the
         laws of the United States of America, any state thereof or the District
         of Columbia and, in any case, shall expressly assume, by an indenture
         supplemental hereto, executed and delivered to the Trustee, in form
         satisfactory to the Trustee, the due and punctual payment of all
         obligations in respect of the Guarantee and the performance of every
         covenant of this Indenture on the part of any such Guarantor to be
         performed or observed;

                  (2) immediately after giving effect to such transaction, no
         Default or Event of Default shall have occurred and be continuing; and

                  (3) any such Guarantor has delivered to the Trustee an
         Officers' Certificate and an Opinion of Counsel, each stating that such
         consolidation, merger, conveyance, transfer or lease and such
         supplemental indenture comply with this Article and that all conditions
         precedent herein provided for relating to such transaction have been
         complied with.

         SECTION 802. SUCCESSOR SUBSTITUTED.

         Upon any consolidation or amalgamation of the Company or any Guarantor
with, or merger of the Company or any Guarantor into, any other Person, or any
conveyance, transfer or lease of the properties and assets of the Company or any
Guarantor substantially as an entirety in accordance with Section 801, the
successor Person formed by such consolidation or amalgamation or into which the
Company or any Guarantor is merged or to which such conveyance, transfer or
lease is made shall succeed to, and be substituted for, and may exercise every
right and power of, the Company or any Guarantor, as the case may be, under this
Indenture with the same effect as if such successor Person had been named as the
Company or any Guarantor, as the case may be, herein, and thereafter, except in
the case of an amalgamation or a lease to another Person, the predecessor Person
shall be relieved of all obligations and covenants under this Indenture and the
Securities.

                                  ARTICLE NINE

                             SUPPLEMENTAL INDENTURES

         SECTION 901. SUPPLEMENTAL INDENTURES WITHOUT CONSENT OF HOLDERS.

         Without the consent of any Holders, the Company, when authorized by a
Board Resolution, any Guarantor, when authorized by a Board Resolution, and the
Trustee, at any time and from time to time, may enter into one or more
indentures supplemental hereto, in form reasonably satisfactory to the Trustee,
for any of the following purposes:

                                       57
<PAGE>

                  (1) to evidence the succession of another Person to the
         Company and the assumption by any such successor of the covenants of
         the Company herein and in the Securities or to evidence the succession
         of another Person to any Guarantor and the assumption by any such
         successor of the Guarantee of such Guarantor herein and, to the extent
         applicable, endorsed upon any Securities; or

                  (2) to add to the covenants of the Company or any Guarantor
         (if applicable) for the benefit of the Holders of all or any series of
         Securities (and if such covenants are to be for the benefit of less
         than all series of Securities, stating that such covenants are
         expressly being included solely for the benefit of such series) or to
         surrender any right or power herein conferred upon the Company or any
         Guarantor (if applicable); or

                  (3) to add any additional Events of Default for the benefit of
         the Holders of all or any series of Securities (and if such additional
         Events of Default are to be for the benefit of less than all series of
         Securities, stating that such additional Events of Default are
         expressly being included solely for the benefit of such series); or

                  (4) to add to or change any of the provisions of this
         Indenture to such extent as shall be necessary to permit or facilitate
         the issuance of Securities in bearer form, registrable or not
         registrable as to principal, and with or without interest coupons, or
         to permit or facilitate the issuance of Securities in uncertificated
         form; or

                  (5) to add to or change any of the provisions of this
         Indenture to such extent as shall be necessary to permit or facilitate
         the issuance of Securities of any series denominated in one or more
         Foreign Currencies, currency units or composite currencies; or

                  (6) to add to, change or eliminate any of the provisions of
         this Indenture in respect of one or more series of Securities; provided
         that any such addition, change or elimination (i) shall neither (A)
         apply to any Security of any series created prior to the execution of
         such supplemental indenture and entitled to the benefit of such
         provision nor (B) modify the rights of the Holder of any such Security
         with respect to such provision or (ii) shall become effective only when
         there is no such Security Outstanding; or

                  (7) to secure the Securities of any series; or

                  (8) to establish the form or terms of Securities of any series
         as permitted by Sections 201 and 301; or

                  (9) to evidence and provide for the acceptance of appointment
         hereunder by a successor Trustee with respect to the Securities of one
         or more series and to add to or change any of the provisions of this
         Indenture as shall be necessary to provide for or facilitate the
         administration of the trusts hereunder by more than one Trustee,
         pursuant to the requirements of Section 611(b); or

                                       58
<PAGE>

                  (10) to cure any ambiguity, to correct or supplement any
         provision herein which may be inconsistent with any other provision
         herein, or to make any other provisions with respect to matters or
         questions arising under this Indenture; provided that such action
         pursuant to this clause shall not adversely affect the interests of the
         Holders of Securities of any series in any material respect; or

                  (11) to make provision with respect to the conversion rights
         of Holders pursuant to the requirements of Article Twelve, including
         providing for the conversion of the Securities into any security or
         property of the Company; or

                  (12) to conform to any mandatory provisions of law.

         SECTION 902. SUPPLEMENTAL INDENTURES WITH CONSENT OF HOLDERS.

         With the consent of the Holders of not less than a majority of
principal amount of the Outstanding Securities of each series affected by such
supplemental indenture, by Act of said Holders delivered to the Company, any
Guarantor and the Trustee, the Company, when authorized by a Board Resolution,
any Guarantor, when authorized by a Board Resolution, and the Trustee may enter
into an indenture or indentures supplemental hereto for the purpose of adding
any provisions to or changing in any manner or eliminating any of the provisions
of this Indenture or of modifying in any manner the rights of the Holders of
Securities of such series under this Indenture; provided, however, that no such
supplemental indenture shall, without the consent of the Holder of each
Outstanding Security affected thereby,

                  (1) extend the Stated Maturity of the principal of, or any
         installment of principal of or interest on, any Security, or reduce the
         principal amount thereof or the rate of interest thereon (including any
         change in the Floating or Adjustable Rate Provision pursuant to which
         such rate is determined that would reduce such rate for any period) or
         any premium payable upon the redemption thereof, or reduce the amount
         of the principal of an Original Issue Discount Security that would be
         due and payable upon a declaration of acceleration of the Maturity
         thereof pursuant to Section 502, or change any Place of Payment where,
         or the coin or currency in which, any Security or any premium, or
         interest thereon is payable, or impair the right to institute suit for
         the enforcement of any such payment on or after the Stated Maturity
         thereof (or, in the case of redemption, on or after the Redemption
         Date), or

                  (2) reduce the percentage in principal amount of the
         Outstanding Securities of any series, the consent of whose Holders is
         required for any such supplemental indenture, or the consent of whose
         Holders is required for any waiver (of compliance with certain
         provisions of this Indenture or certain defaults hereunder and their
         consequences) provided for in this Indenture, or

                  (3) if applicable, make any change that adversely affects the
         right to convert any Security to which the provisions of Article Twelve
         are applicable or, except as provided in this Indenture, decrease the
         conversion rate or increase the conversion price of any Security, or

                                       59
<PAGE>

                  (4) modify any of the provisions of this Section, Section 513
         or Section 908, except to increase any such percentage or to provide
         that certain other provisions of this Indenture cannot be modified or
         waived without the consent of the Holder of each Outstanding Security
         affected thereby; provided, however, that this clause shall not be
         deemed to require the consent of any Holder with respect to changes in
         the references to "the Trustee" and concomitant changes in this Section
         and Section 908, or the deletion of this proviso, in accordance with
         the requirements of Sections 611(b) and 901(9).

A supplemental indenture which changes or eliminates any covenant or other
provision of this Indenture which has expressly been included solely for the
benefit of one or more particular series of Securities, or which modifies the
rights of the Holders of Securities of such series with respect to such covenant
or other provision, shall be deemed not to affect the rights under this
Indenture of the Holders of Securities of any other series.

         It shall not be necessary for any Act of Holders under this Section to
approve the particular form of any proposed supplemental indenture, but it shall
be sufficient if such Act shall approve the substance thereof.

         SECTION 903. EXECUTION OF SUPPLEMENTAL INDENTURES.

         In executing, or accepting the additional trusts created by, any
supplemental indenture permitted by this Article or the modifications thereby of
the trusts created by this Indenture, the Trustee shall be entitled to receive,
and (subject to Section 601) shall be fully protected in relying upon, in
addition to the documents required by Section 103, an Opinion of Counsel and an
Officers' Certificate, each stating that the execution of such supplemental
indenture is authorized or permitted by this Indenture and, with respect to
supplemental indentures under Section 902 hereof, evidence of the consents of
Holders required in connection therewith. The Trustee may, but shall not be
obligated to, enter into any such supplemental indenture which affects the
Trustee's own rights, duties or immunities under this Indenture or otherwise.

         SECTION 904. EFFECT OF SUPPLEMENTAL INDENTURES.

         Upon the execution of any supplemental indenture under this Article
with respect to one or more series of Securities, this Indenture shall be
modified in accordance therewith, and such supplemental indenture shall form a
part of this Indenture for all purposes; and every Holder of Securities of such
series theretofore or thereafter authenticated and delivered hereunder shall be
bound thereby.

         SECTION 905. REVOCATION AND EFFECT OF CONSENTS.

         Until an amendment or supplement under this Article or a waiver under
this Article becomes effective, a consent to it by a Holder of a Security is a
continuing consent by the Holder and every subsequent Holder of a Security or
portion of a Security that evidences the same debt as the consenting Holder's
Security, even if notation of the consent is not made on any Security. However,
any such Holder or subsequent Holder may revoke the consent as to his Security
or

                                       60
<PAGE>

portion of a Security if the Trustee receives the notice of revocation before
the date the amendment, supplement or waiver becomes effective.

         After an amendment or supplement becomes effective, it shall bind every
Holder.

         SECTION 906. CONFORMITY WITH TRUST INDENTURE ACT.

         Every supplemental indenture executed pursuant to this Article shall
conform to the requirements of the Trust Indenture Act.

         SECTION 907. REFERENCE IN SECURITIES TO SUPPLEMENTAL INDENTURES.

         Securities of any series authenticated and delivered after the
execution of any supplemental indenture pursuant to this Article may, and shall
if required by the Trustee, bear a notation in form approved by the Trustee as
to any matter provided for in such supplemental indenture. If the Company shall
so determine, new Securities of any series so modified as to conform, in the
opinion of the Trustee and the Company, to any such supplemental indenture may
be prepared and executed by the Company and authenticated and delivered by the
Trustee in exchange for Outstanding Securities of such series.

         SECTION 908. WAIVER OF COMPLIANCE BY HOLDERS.

         Anything in this Indenture to the contrary notwithstanding, any of the
acts which the Company is required to do, or is prohibited from doing, by any of
the provisions of this Indenture may, to the extent that such provisions might
be changed or eliminated by a supplemental indenture pursuant to Section 902
upon consent of Holders of not less than a majority in aggregate principal
amount of the then Outstanding Securities of the series affected, be omitted or
done by the Company, if there is obtained the prior consent or waiver of the
Holders of at least a majority in aggregate principal amount of the then
Outstanding Securities of such series.

         SECTION 909. NOTICE OF SUPPLEMENTAL INDENTURE.

         Promptly after the execution by the Company, any Guarantor and the
Trustee of any supplemental indenture pursuant to the provisions of Section 902,
the Company shall give notice thereof to the Holders of each Outstanding
Security affected, in the manner provided for in Section 106, setting forth in
general terms the substance of such supplemental indenture.

                                   ARTICLE TEN

                                    COVENANTS

         SECTION 1001. PAYMENT OF PRINCIPAL, PREMIUM AND INTEREST.

         The Company shall pay the principal of and premium, if any, and
interest, if any, on the Securities on the dates and in the manner provided in
the Securities and in this Indenture.

                                       61
<PAGE>

Principal, premium, if any, and interest, if any, shall be considered paid on
the date due if the Paying Agent, other than the Company or a Subsidiary of the
Company, holds by 11:00 a.m., Eastern time, on that date money deposited by or
on behalf of the Company designated for and sufficient to pay all principal,
premium, if any, and interest, if any, then due.

         To the extent lawful, the Company shall pay interest (including
post-petition interest in any proceeding under any Bankruptcy Law) on overdue
principal, premium, if any, and interest, if any, (without regard to any
applicable grace period) at a rate equal to the then applicable interest rate on
the Securities.

         SECTION 1002. MAINTENANCE OF OFFICE OR AGENCY.

         So long as any Securities are Outstanding, the Company will maintain in
each Place of Payment for any series of Securities an office or agency where
Securities of that series may be presented or surrendered for payment, where
Securities of that series may be surrendered for registration of transfer or
exchange, where Securities of that series may be surrendered for conversion and
where notices and demands to or upon the Company in respect of the Securities of
that series and this Indenture may be served. The Company will give prompt
written notice to the Trustee of the location, and any change in the location,
of such office or agency. If at any time the Company shall fail to maintain any
such required office or agency or shall fail to furnish the Trustee with the
address thereof, such presentations, surrenders, notices and demands may be made
or served at the Corporate Trust Office of the Trustee, and the Company hereby
appoints the Trustee as its agent to receive all such presentations, surrenders,
notices and demands.

         The Company may also from time to time designate one or more other
offices or agencies where the Securities of one or more series may be presented
or surrendered for any or all such purposes and may from time to time rescind
such designations; provided, however, that no such designation or rescission
shall in any manner relieve the Company of its obligation to maintain an office
or agency in each Place of Payment for Securities of any series for such
purposes. The Company will give prompt written notice to the Trustee of any such
designation or rescission and of any change in the location of any such other
office or agency.

         SECTION 1003. COMMISSION REPORTS; FINANCIAL STATEMENTS.

                  (a) The Company covenants and agrees or, if there is a
         Guarantee, each Guarantor covenants and agrees to file with the Trustee
         copies, within 15 days after the Company or any Guarantor is required
         to file the same with the Commission, of the annual reports and of the
         information, documents and other reports (or copies of such portions of
         any of the foregoing as the Commission may from time to time by rules
         and regulations prescribe) which the Company or any Guarantor may be
         required to file with the Commission pursuant to Section 13 or Section
         15(d) of the Exchange Act; or, if the Company or any Guarantor (as
         applicable) is not required to file information, documents or reports
         pursuant to either of such sections, then to file with the Trustee and
         the Commission, in accordance with rules and regulations prescribed
         from time to time by the Commission, such of the supplementary and
         periodic information, documents and reports, if any, which may be
         required pursuant to Section 13 of the Exchange Act, in

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         respect of a security listed and registered on a national securities
         exchange as may be prescribed from time to time in such rules and
         regulations.

                  (b) The Company covenants and agrees or, if there is a
         Guarantee, each Guarantor covenants and agrees, to file with the
         Trustee and the Commission, in accordance with the rules and
         regulations prescribed from time to time by the Commission, such
         additional information, documents and reports, if any, with respect to
         compliance by the Company or any Guarantor (as applicable) with the
         conditions and covenants provided for in this Indenture as may be
         required from time to time by such rules and regulations.

         SECTION 1004. COMPLIANCE CERTIFICATE.

         The Company and any Guarantor shall deliver to the Trustee, within 120
days after the end of each fiscal year of the Company, a statement signed by two
officers of the Company (one of whom shall be the Chief Executive Officer, Chief
Financial Officer or Chief Accounting Officer of the Company) and two officers
of each Guarantor (one of whom shall be the Chief Executive Officer, Chief
Financial Officer or Chief Accounting Officer of each Guarantor), which
statement need not constitute an Officers' Certificate, stating that in the
course of performance by the signing officers of the Company and officers of any
Guarantor of their duties as such officers, they would normally obtain knowledge
of the keeping, observing, performing and fulfilling by the Company and any
Guarantor, respectively, of their obligations under this Indenture, and further
stating, as to each such officer signing such statement, that to the best of his
knowledge, each of the Company and any Guarantor has kept, observed, performed
and fulfilled each and every covenant applicable to it contained in this
Indenture and is not in default in the performance or observance of any of the
terms, provisions and conditions hereof applicable to it (or, if a Default or
Event of Default shall have occurred, describing all such Defaults or Events of
Default of which such officer may have knowledge and what action the Company or
any Guarantor, as the case may be, is taking or proposes to take with respect
thereto).

         SECTION 1005. CORPORATE EXISTENCE.

         Subject to Article Eight, each of the Company and any Guarantor will do
or cause to be done all things necessary to preserve and keep in full force and
effect its corporate existence, under the laws of its respective jurisdiction of
incorporation or formation.

         SECTION 1006. MONEY FOR SECURITIES PAYMENTS TO BE HELD IN TRUST.

         If the Company shall at any time act as its own Paying Agent with
respect to any series of Securities, it will, on or before each due date of the
principal, premium, if any, or interest, if any, on any of the Securities of
that series, segregate and hold in trust for the benefit of the Persons entitled
thereto a sum sufficient to pay the principal, premium, if any, and interest, if
any, so becoming due until such sums shall be paid to such Persons or otherwise
disposed of as herein provided and will promptly notify the Trustee of its
action or failure so to act.

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<PAGE>

         Whenever the Company shall have one or more Paying Agents for any
series of Securities, it will, prior to each due date of the principal, premium,
if any, or interest, if any, on any Securities of that series, deposit with a
Paying Agent a sum sufficient to pay such amount, such sum to be held as
provided by the Trust Indenture Act, and (unless such Paying Agent is the
Trustee) the Company will promptly notify the Trustee of its action or failure
so to act.

         The Company will cause each Paying Agent for any series of Securities
other than the Trustee to execute and deliver to the Trustee an instrument in
which such Paying Agent shall agree with the Trustee, subject to the provisions
of this Section, that such Paying Agent will (i) comply with the provisions of
the Trust Indenture Act applicable to it as a Paying Agent and (ii) during the
continuance of any default by the Company (or any other obligor upon the
Securities of that series) in the making of any payment in respect of the
Securities of that series, and upon the written request of the Trustee,
forthwith pay to the Trustee all sums held in trust by such Paying Agent for
payment in respect of the Securities of that series.

         The Company and any Guarantor (if applicable) may at any time, for the
purpose of obtaining the satisfaction and discharge of this Indenture or for any
other purpose, pay, or by Company Order direct any Paying Agent to pay, to the
Trustee all sums held in trust by the Company or such Paying Agent, such sums to
be held by the Trustee upon the same terms as those upon which such sums were
held by the Company or such Paying Agent; and, upon such payment by any Paying
Agent to the Trustee, such Paying Agent shall be released from all further
liability with respect to such money.

         Any money deposited with the Trustee or any Paying Agent, or then held
by the Company, in trust for the payment of the principal, premium, if any, or
interest, if any, on any Security of any series and remaining unclaimed for two
years after such principal, premium, if any, or interest, if any, has become due
and payable shall be paid to the Company on Company Request, or (if then held by
the Company) shall be discharged from such trust; and the Holder of such
Security shall thereafter, as an unsecured general creditor, look only to the
Company for payment thereof, and all liability of the Trustee or such Paying
Agent with respect to such trust money, and all liability of the Company as
trustee thereof, shall thereupon cease; provided, however, that the Trustee or
such Paying Agent, before being required to make any such repayment, may at the
request and expense of the Company cause to be published once, in a newspaper
published in the English language, customarily published on each Business Day
and of general circulation in the Borough of Manhattan, the City of New York,
notice that such money remains unclaimed and that, after a date specified
therein, which shall not be less than 30 days from the date of such publication,
any unclaimed balance of such money then remaining will be repaid to the
Company.

         SECTION 1007. WAIVER OF CERTAIN COVENANTS.

         The Company or any Guarantor (as applicable) may omit in any particular
instance to comply with any term, provision or condition set forth in Section
1005 with respect to the Securities of any series if before the time for such
compliance the Holders of at least a majority in aggregate principal amount of
the Outstanding Securities of all affected series (voting as one class) shall,
by Act of such Holders, either waive such compliance in such instance or
generally

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<PAGE>

waive compliance with such term, provision or condition, but no such waiver
shall extend to or affect such term, provision or condition except to the extent
so expressly waived, and, until such waiver shall become effective, the
obligations of the Company or any Guarantor (as applicable) and the duties of
the Trustee in respect of any such term, provision or condition shall remain in
full force and effect.

         A waiver which changes or eliminates any term, provision or condition
of this Indenture which has expressly been included solely for the benefit of
one or more particular series of Securities, or which modifies the rights of the
Holders of Securities of such series with respect to such term, provision or
condition, shall be deemed not to affect the rights under this Indenture of the
Holders of Securities of any other series.

                                 ARTICLE ELEVEN

                            REDEMPTION OF SECURITIES

         SECTION 1101. APPLICABILITY OF ARTICLE.

         Securities of any series which are redeemable before their Stated
Maturity shall be redeemable in accordance with their terms and (except as
otherwise specified as contemplated by Section 301 for Securities of any series)
in accordance with this Article.

         SECTION 1102. ELECTION TO REDEEM; NOTICE TO TRUSTEE.

         In case of any redemption at the election of the Company of less than
all the Securities of any series, the Company shall, at least 60 days prior to
the Redemption Date fixed by the Company (unless a shorter notice shall be
reasonably satisfactory to the Trustee), notify the Trustee of such Redemption
Date, of the principal amount of Securities of such series to be redeemed, the
specific provision of the Securities of such series pursuant to which such
Securities being called for redemption are being redeemed and, if applicable, of
the tenor of the Securities to be redeemed. In the case of any redemption of
Securities prior to the expiration of any restriction on such redemption
provided in the terms of such Securities or elsewhere in this Indenture, the
Company shall furnish the Trustee with an Officers' Certificate evidencing
compliance with such restriction.

         SECTION 1103. SELECTION BY TRUSTEE OF SECURITIES TO BE REDEEMED.

         If less than all the Securities of any series are to be redeemed
(unless all of the Securities of such series and of a specified tenor are to be
redeemed), the particular Securities to be redeemed shall be selected not more
than 45 days prior to the Redemption Date by the Trustee, from the Outstanding
Securities of such series not previously called for redemption, by such method
as the Trustee shall deem fair and appropriate and which may provide for the
selection for redemption of portions (equal to the minimum authorized
denomination for Securities of that series or any integral multiple thereof) of
the principal amount of Securities of such series of a denomination larger than
the minimum authorized denomination for Securities of that series. If less than
all of the Securities of such series and of a specified tenor are to be
redeemed, the

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<PAGE>

particular Securities to be redeemed shall be selected not more than 45 days
prior to the Redemption Date by the Trustee, from the Outstanding Securities of
such series and specified tenor not previously called for redemption in
accordance with the preceding sentence.

         If any Security selected for partial redemption is converted in part
before termination of the conversion right with respect to the portion of the
Security so selected, the converted portion of such Security shall be deemed (so
far as may be) to be the portion selected for redemption. Securities which have
been converted during a selection of Securities to be redeemed shall be treated
by the Trustee as Outstanding for the purpose of such selection.

         The Trustee shall promptly notify the Company in writing of the
Securities selected for redemption and, in the case of any Securities selected
for partial redemption, the principal amount thereof to be redeemed.

         For all purposes of this Indenture, unless the context otherwise
requires, all provisions relating to the redemption of Securities shall relate,
in the case of any Securities redeemed or to be redeemed only in part, to the
portion of the principal amount of such Securities which has been or is to be
redeemed.

         SECTION 1104. NOTICE OF REDEMPTION.

         Notice of redemption shall be given by first-class mail, postage
prepaid, mailed not less than 15 nor more than 60 days prior to the Redemption
Date, to each Holder of Securities to be redeemed, at its address appearing in
the Security Register.

                  All notices of redemption shall state:

                  (1) the Redemption Date,

                  (2) the Redemption Price and the amount, if any, of any
         accrued and unpaid interest payable on the Redemption Date,

                  (3) if less than all the Outstanding Securities of any series
         are to be redeemed, the identification (and, in the case of partial
         redemption of any Securities, the principal amounts) of the particular
         Securities to be redeemed,

                  (4) that on the Redemption Date the Redemption Price will
         become due and payable upon each such Security to be redeemed and, if
         applicable, that interest thereon will cease to accrue on and after
         said date,

                  (5) if applicable, the conversion price, and that the date on
         which the right to convert the principal of the Securities or the
         portions thereof to be redeemed will terminate will be the Redemption
         Date and the place or places where such Securities may be surrendered
         for conversion,

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<PAGE>

                  (6) the place or places where such Securities are to be
         surrendered for payment of the Redemption Price, and

                  (7) that the redemption is for a sinking fund, if such is the
         case.

         Notice of redemption of Securities to be redeemed at the election of
the Company shall be given by the Company or, at the Company's request, by the
Trustee in the name and at the expense of the Company.

         SECTION 1105. DEPOSIT OF REDEMPTION PRICE.

         Prior to any Redemption Date, the Company shall deposit with the
Trustee or with a Paying Agent (or, if the Company is acting as its own Paying
Agent, segregate and hold in trust as provided in Section 1006) an amount of
money sufficient to pay the Redemption Price of, and (except if the Redemption
Date shall be an Interest Payment Date) accrued interest on, all the Securities
which are to be redeemed on that date, other than any Securities called for
redemption on that date which have been converted prior to the date of such
deposit.

         If any Security or portion thereof called for redemption is converted,
any money deposited with the Trustee or with any Paying Agent or so segregated
and held in trust for the redemption of such Security or portion thereof shall
(subject to any right of the Holder of such Security or any Predecessor Security
to receive interest as provided in the last paragraph of Section 307) be paid to
the Company upon Company Request or, if then held by the Company, shall be
discharged from such trust.

         SECTION 1106. SECURITIES PAYABLE ON REDEMPTION DATE.

         Notice of redemption having been given as aforesaid, the Securities so
to be redeemed shall, on the Redemption Date, become due and payable at the
Redemption Price therein specified, and from and after such date (unless the
Company shall default in the payment of the Redemption Price and accrued
interest) such Securities shall cease to bear interest. Upon surrender of any
such Security for redemption in accordance with said notice, such Security shall
be paid by the Company at the Redemption Price, together with accrued interest
to the Redemption Date; provided, however, that, unless otherwise specified as
contemplated by Section 301, installments of interest whose Stated Maturity is
on or prior to the Redemption Date shall be payable to the Holders of such
Securities, or one or more Predecessor Securities, registered as such at the
close of business on the relevant Record Dates according to their terms and the
provisions of Section 307.

         If any Security called for redemption shall not be so paid upon
surrender thereof for redemption, the principal and premium, if any, shall,
until paid, bear interest from the Redemption Date at the rate prescribed
therefor in the Security.

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<PAGE>

         SECTION 1107. SECURITIES REDEEMED IN PART.

         Any Security which is to be redeemed only in part shall be surrendered
at a Place of Payment therefor (with, if the Company or the Trustee so requires,
due endorsement by, or a written instrument of transfer in form satisfactory to
the Company and the Trustee duly executed by, the Holder thereof or his attorney
duly authorized in writing), and the Company shall execute, and the Trustee
shall authenticate and deliver to the Holder of such Security without service
charge, a new Security or Securities of the same series and of like tenor, of
any authorized denomination as requested by such Holder, in aggregate principal
amount equal to and in exchange for the unredeemed portion of the principal of
the Security so surrendered.

                                 ARTICLE TWELVE

                            CONVERSION OF SECURITIES

         SECTION 1201. APPLICABILITY OF ARTICLE.

         The provisions of this Article shall be applicable to the Securities of
any series which are convertible into any securities or property of the Company
or an Affiliate of the Company (the "Exchange Securities"), and the issuance of
the Exchange Securities upon the conversion of such convertible Securities,
except as otherwise specified as contemplated by Section 301 for the Securities
of such series.

         SECTION 1202. EXERCISE OF CONVERSION PRIVILEGE.

         In order to exercise a conversion privilege, the Holder of a Security
of a series with such a privilege shall surrender such convertible Security to
the Company at the office or agency maintained for that purpose pursuant to
Section 1002, accompanied by written notice to the Company that the Holder
elects to convert such convertible Security or a specified portion thereof. Such
notice shall also state, if different from the name and address of such Holder,
the name or names (with address) in which the certificate or certificates
representing the Exchange Securities which shall be issuable on such conversion
shall be issued. Securities surrendered for conversion shall (if so required by
the Company or the Trustee) be duly endorsed by or accompanied by instruments of
transfer in forms satisfactory to the Company and the Trustee duly executed by
the registered Holder or its attorney duly authorized in writing; and Securities
so surrendered for conversion during the period from the close of business on
any Regular Record Date to the opening of business on the next succeeding
Interest Payment Date (excluding Securities or portions thereof called for
redemption during such period) shall also be accompanied by payment of an amount
equal to the interest payable on such Interest Payment Date on the principal
amount of such Security then being converted, and such interest shall be payable
to such registered Holder notwithstanding the conversion of such Security,
subject to the provisions of Section 307 relating to the payment of Defaulted
Interest by the Company. As promptly as practicable after the receipt of such
notice and of any payment required pursuant to a Board Resolution and, subject
to Section 303, set forth, or determined in the manner provided, in an Officers'
Certificate, or established in one or more indentures supplemental hereto
setting forth the terms of such series of Security, and the surrender of such
Security in accordance with such reasonable procedures as the Company may
prescribe, the Company shall deliver, at the office or agency at which such
Security is surrendered, to such Holder or on its written order, a

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<PAGE>

certificate or certificates for the number of Exchange Securities issuable upon
the conversion of such convertible Security (or specified portion thereof), in
accordance with the provisions of such Board Resolution, Officers' Certificate
or supplemental indenture, and cash as provided therein in respect of any
fractional Exchange Security otherwise issuable upon such conversion. Such
conversion shall be deemed to have been effected immediately prior to the close
of business on the date on which such notice and such payment, if required,
shall have been received in proper order for conversion by the Company and such
Security shall have been surrendered as aforesaid (unless such Holder shall have
so surrendered such Security and shall have instructed the Company to effect the
conversion on a particular date following such surrender and such Holder shall
be entitled to convert such Security on such date, in which case such conversion
shall be deemed to be effected immediately prior to the close of business on
such date) and at such time the rights of the Holder of such Security as such
Security Holder shall cease and the person or persons in whose name or names any
certificate or certificates representing the Exchange Securities shall be
issuable upon such conversion shall be deemed to have become the Holder or
Holders of record of the Exchange Securities represented thereby. Except as set
forth above and subject to the final paragraph of Section 307, no payment or
adjustment shall be made upon any conversion on account of any interest accrued
on the Securities surrendered for conversion or on account of any dividends, if
applicable, on the Exchange Securities issued upon such conversion.

         In the case of any Security which is converted in part only, upon such
conversion the Company shall execute and the Trustee shall authenticate and
deliver to or on the order of the Holder thereof, at the expense of the Company,
a new Security or Securities of the same series, of authorized denominations, in
aggregate principal amount equal to the unconverted portion of such Security.

         SECTION 1203. NO FRACTIONAL SHARES.

         No fractional Exchange Security shall be issued upon conversions of
Securities of any series. If more than one Security shall be surrendered for
conversion at one time by the same Holder, the number of full Exchange
Securities which shall be issuable upon conversion shall be computed on the
basis of the aggregate principal amount of the Securities (or specified portions
thereof to the extent permitted hereby) so surrendered. If, except for the
provisions of this Section 1203, any Holder of a Security or Securities would be
entitled to a fractional Exchange Security upon the conversion of such
convertible Security or Securities, or specified portions thereof, the Company
shall pay to such Holder an amount in cash equal to the current market value of
such fractional share computed, (i) if such Exchange Security is listed or
admitted to unlisted trading privileges on a national securities exchange, on
the basis of the last reported sale price regular way on such exchange on the
last trading day prior to the date of conversion upon which such a sale shall
have been effected, or (ii) if such Exchange Security is not at the time so
listed or admitted to unlisted trading privileges on a national securities
exchange, on the basis of the average of the bid and asked prices of such
Exchange Security in the over-the-counter market, on the last trading day prior
to the date of conversion, as reported by the National Quotation Bureau,
Incorporated or similar organization if the National Quotation Bureau,
Incorporated is no longer reporting such information, or, if not so available,
the fair market price as determined by the Board of Directors. For purposes of
this Section, "trading day" shall mean

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<PAGE>

each Monday, Tuesday, Wednesday, Thursday and Friday other than any day on which
the Exchange Security is not traded on a national exchange, or if the Exchange
Security is not traded on a national exchange, on the principal exchange or
market on which the Exchange Security is traded or quoted.

         SECTION 1204. ADJUSTMENT OF CONVERSION PRICE.

         The conversion price of Securities of any series that is convertible
into Exchange Securities shall be adjusted, if applicable, for any stock
dividends, stock splits, reclassification, combinations or similar transactions
in accordance with the term of the supplemental indenture or Board Resolutions
setting forth the terms of the Securities of such series.

         Whenever the conversion price is adjusted, the Company shall compute
the adjusted conversion price in accordance with terms of the applicable Board
Resolution or supplemental indenture and shall prepare an Officers' Certificate
setting forth the adjusted conversion price and showing in reasonable detail the
facts upon which such adjustment is based, and such certificate shall forthwith
be filed at each office or agency maintained for the purpose of conversion of
Securities pursuant to Section 1002 and, if different, with the Trustee. The
Company shall forthwith cause a notice setting forth the adjusted conversion
price to be mailed, first class postage prepaid, to each Holder of Securities of
such series at its address appearing on the Security Register and to any
conversion agent other than the Trustee.

         To the extent permitted by applicable law, the Company may from time to
time increase, in one or more increments, the amount of Exchange Securities
issuable upon conversion of a Security ("Conversion Rate") by any amount for any
period of time if the period is at least 20 Business Days, the increase is
irrevocable during the period and the Board of Directors shall have made a
determination that such increase would be in the best interests of the Company,
which determination shall be conclusive. Subsequent to any such increase, the
Company may from time to time lower the Conversion Rate to any rate that is not
lower than the Conversion Rate that would have been applicable had any such
increase not occurred, if the Board of Directors has determined that the
decrease would be in the best interests of the Company. Whenever the Conversion
Rate is changed pursuant to this Section, the Company shall mail to Holders and
file with the Trustee and any applicable conversion agent a notice of such
increase. The Company shall mail such notice at least seven days before the date
the increased or decreased Conversion Rate takes effect. The notice shall state
the increased or decreased Conversion Rate and the period it will be in effect.

         SECTION 1205. NOTICE OF CERTAIN CORPORATE ACTIONS.

         In case:

                  (a) the Company or an Affiliate of the Company, as the case
         may be, shall declare, if applicable, a dividend (or any other
         distribution) on the Exchange Securities payable otherwise than in cash
         out of its retained earnings (other than a dividend for which approval
         of any stockholders of the Company or an Affiliate of the Company, as
         the case may be, is required); or

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<PAGE>

                  (b) the Company or an Affiliate of the Company, as the case
         may be, shall authorize, if applicable, the granting to the holders of
         the Exchange Securities of rights, options or warrants to subscribe for
         or purchase any shares of capital stock of any class or of any other
         rights (other than any such grant for which approval of any
         stockholders of the Company or an Affiliate of the Company, as the case
         may be, is required); or

                  (c) of any reclassification of the Exchange Securities (other
         than a subdivision or combination of the Exchange Securities, if
         applicable, or of any consolidation, merger or share exchange to which
         the Company or an Affiliate of the Company, as the case may be, is a
         party and for which approval of any stockholders of the Company or an
         Affiliate of the Company, as the case may be, is required), or of the
         sale of all or substantially all of the assets of the Company or an
         Affiliate of the Company which has issued the Exchange Securities; or

                  (d) of the voluntary or involuntary dissolution, liquidation
         or winding up of the Company or of an Affiliate of the Company which
         has issued the Exchange Securities;

then the Company shall cause to be filed with the Trustee, and shall cause to be
mailed to all Holders at their last addresses as they shall appear in the
Securities Register, at least 20 days (or 10 days in any case specified in
clause (a) or (b) above) prior to the applicable record date hereinafter
specified, a notice stating (i) the date on which a record is to be taken for
the purpose of such dividend, distribution, rights, options or warrants, or, if
a record is not to be taken, the date as of which the holders of Exchange
Securities of record to be entitled to such dividend, distribution, rights,
options or warrants are to be determined, or (ii) the date on which such
reclassification, consolidation, merger, share exchange, sale, dissolution,
liquidation or winding up is expected to become effective, and the date as of
which it is expected that holders of Exchange Securities shall be entitled to
exchange their Exchange Securities for securities, cash or other property
deliverable upon such reclassification, consolidation, merger, share exchange,
sale, dissolution, liquidation or winding up. If at any time the Trustee shall
not be the conversion agent, a copy of such notice shall also forthwith be filed
by the Company with the Trustee.

         SECTION 1206. RESERVATION OF EXCHANGE SECURITIES.

         The Company or an Affiliate of the Company, as the case may be, shall
at all times reserve and keep available, free from preemptive rights, out of its
authorized but unissued Exchange Securities, for the purpose of effecting the
conversion of Securities, the full number of Exchange Securities then issuable
upon the conversion of all outstanding Securities of any series that has
conversion rights.

         SECTION 1207. PAYMENT OF CERTAIN TAXES UPON CONVERSION.

         The Company will pay any and all taxes that may be payable in respect
of the issue or delivery of the Exchange Securities on conversion of Securities
pursuant hereto. The Company shall not, however, be required to pay any tax
which may be payable in respect of any transfer involved in the issue and
delivery of the Exchange Securities in a name other than that of the

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<PAGE>

Holder of the Security or Securities to be converted, and no such issue or
delivery shall be made unless and until the Person requesting such issue has
paid to the Company the amount of any such tax, or has established, to the
satisfaction of the Company, that such tax has been paid.

         SECTION 1208. NONASSESSABILITY.

         The Company covenants that all Exchange Securities which may be issued
upon conversion of Securities will upon issue in accordance with the terms
hereof, if applicable, be duly and validly issued and fully paid and
nonassessable.

         SECTION 1209. EFFECT OF CONSOLIDATION OR MERGER ON CONVERSION
         PRIVILEGE.

         In case of any consolidation of the company issuing the Exchange
Securities (the "Issuing Company") with, or merger of the Issuing Company into
or with any other Person, or in case of any sale of all or substantially all of
the assets of the Issuing Company, the Issuing Company or the Person formed by
such consolidation or the Person into which the Issuing Company shall have been
merged or the Person which shall have acquired such assets, as the case may be,
shall execute and deliver to the Trustee a supplemental indenture in accordance
with Section 901 providing that the Holder of each Security then outstanding of
any series that is convertible into the Exchange Securities shall have the
right, which right shall be the exclusive conversion right thereafter available
to said Holder (until the expiration of the conversion right of such Security),
to convert such Security into the kind and amount of shares of stock or other
securities or property (including cash) receivable upon such consolidation,
merger or sale by a holder of the number of Exchange Securities into which such
Security might have been converted immediately prior to such consolidation,
merger or sale, subject to compliance with the other provisions of this
Indenture, such Security and such supplemental indenture. Such supplemental
indenture shall provide for adjustments which shall be as nearly equivalent as
may be practicable to the adjustments provided for in such Security. The above
provisions of this Section shall similarly apply to successive consolidations,
mergers or sales. It is expressly agreed and understood that anything in this
Indenture to the contrary notwithstanding, if, pursuant to such merger,
consolidation or sale, holders of outstanding Exchange Securities do not receive
shares of common stock of the surviving corporation but receive other
securities, cash or other property or any combination thereof, Holders of
Securities shall not have the right to thereafter convert their Securities into
common stock of the surviving corporation or the corporation which shall have
acquired such assets, but rather, shall have the right upon such conversion to
receive the other securities, cash or other property receivable by a holder of
the number of the Exchange Securities into which the Securities held by such
holder might have been converted immediately prior to such consolidation, merger
or sale, all as more fully provided in the first sentence of this Section 1209.
Anything in this Section 1209 to the contrary notwithstanding, the provisions of
this Section 1209 shall not apply to a merger or consolidation of another
corporation with or into the Issuing Company pursuant to which both of the
following conditions are applicable: (i) the Issuing Company is the surviving
corporation and (ii) the outstanding Exchange Securities are not changed or
converted into any other securities or property (including cash) or changed in
number or character or reclassified pursuant to the terms of such merger or
consolidation.

                                       72
<PAGE>

         As evidence of the kind and amount of shares of stock or other
securities or property (including cash) into which Securities may properly be
convertible after any such consolidation, merger or sale, or as to the
appropriate adjustments of the conversion prices applicable with respect
thereto, the Trustee shall be furnished with and may accept the certificate or
opinion of an independent certified public accountant with respect thereto; and,
in the absence of bad faith on the part of the Trustee, the Trustee may
conclusively rely thereon, and shall not be responsible or accountable to any
Holder of Securities for any provision in conformity therewith or approved by
such independent certified accountant which may be contained in said
supplemental indenture.

         SECTION 1210. DUTIES OF TRUSTEE REGARDING CONVERSION.

         Neither the Trustee nor any conversion agent shall at any time be under
any duty or responsibility to any Holder of Securities of any series that is
convertible into Exchange Securities to determine whether any facts exist which
may require any adjustment of the conversion price, or with respect to the
nature or extent of any such adjustment when made, or with respect to the method
employed, whether herein or in any supplemental indenture, any resolutions of
the Board of Directors or written instrument executed by one or more officers of
the Company provided to be employed in making the same. Neither the Trustee nor
any conversion agent shall be accountable with respect to the validity or value
(or the kind or amount) of any Exchange Securities, or of any securities or
property, which may at any time be issued or delivered upon the conversion of
any Securities and neither the Trustee nor any conversion agent makes any
representation with respect thereto. Subject to the provisions of Section 601,
neither the Trustee nor any conversion agent shall be responsible for any
failure of the Company to issue, transfer or deliver any Exchange Securities or
other securities or property upon the surrender of any Security for the purpose
of conversion or to comply with any of the covenants of the Company contained in
this Article Twelve or in the applicable supplemental indenture, resolutions of
the Board of Directors or written instrument executed by one or more duly
authorized officers of the Company.

         SECTION 1211. REPAYMENT OF CERTAIN FUNDS UPON CONVERSION.

         Any funds which at any time shall have been deposited by the Company or
on its behalf with the Trustee or any other paying agent for the purpose of
paying the principal of, and premium, if any, and interest, if any, on any of
the Securities (including funds deposited for the sinking fund referred to in
Article Three hereof) and which shall not be required for such purposes because
of the conversion of such Securities as provided in this Article Twelve shall
after such conversion be repaid to the Company by the Trustee upon the Company's
written request by Company Request.

                                       73
<PAGE>

                                ARTICLE THIRTEEN

                       DEFEASANCE AND COVENANT DEFEASANCE

         SECTION 1301. COMPANY'S OPTION TO EFFECT DEFEASANCE OR COVENANT
DEFEASANCE.

         The Company may elect, at any time, to have either Section 1302 or
Section 1303 applied to the Outstanding Securities of any series, upon
compliance with the conditions set forth below in this Article Thirteen.

         SECTION 1302. DEFEASANCE AND DISCHARGE.

         Upon the Company's exercise of the option provided in Section 1301 to
have this Section 1302 applied to the Outstanding Securities of any series, the
Company and any Guarantor (if applicable) shall be deemed to have been
discharged from their obligations, with respect to the Outstanding Securities of
such series as provided in this Section on and after the date the conditions set
forth in Section 1304 are satisfied (hereinafter called "Defeasance"). For this
purpose, such Defeasance means that the Company and any Guarantor (if
applicable) shall be deemed to have paid and discharged the entire indebtedness
represented by the Outstanding Securities of such series and to have satisfied
all its other obligations under the Securities and the Guarantee (if applicable)
of such series and this Indenture insofar as the Securities of such series are
concerned (and the Trustee, at the expense of the Company, shall execute proper
instruments acknowledging the same), subject to the following which shall
survive until otherwise terminated or discharged hereunder: (1) the rights of
Holders of Securities of such series to receive, solely from the trust fund
described in Section 1304 and as more fully set forth in such Section, payments
in respect of the principal, premium, if any, and interest, if any, on such
Securities of such series when payments are due, (2) the Company's and any
Guarantor's (if applicable) obligations with respect to the Securities of such
series under Sections 304, 305, 306, 1002 and 1006 and Article Sixteen, (3) the
rights, powers, trusts, duties and immunities of the Trustee hereunder,
including, without limitation, its rights under Section 607 and (4) this Article
Thirteen. Subject to compliance with this Article Thirteen, the Company may
exercise its option provided in Section 1301 to have this Section 1302 applied
to the Outstanding Securities of any series notwithstanding the prior exercise
of its option provided in Section 1301 to have Section 1303 applied to the
Outstanding Securities of such series.

         SECTION 1303. COVENANT DEFEASANCE.

         Upon the Company's exercise of the option provided in Section 1301 to
have this Section 1303 applied to the Outstanding Securities of any series, (1)
the Company and any Guarantor (if applicable) shall be released from their
obligations under Section 801 and (2) the occurrence of any event specified in
Sections 501(3) and 501(4) (with respect to Section 801) shall be deemed not to
be or result in an Event of Default, in each case with respect to the
Outstanding Securities of such series as provided in this Section on and after
the date the conditions set forth in Section 1304 are satisfied (hereinafter
called "Covenant Defeasance"). For this purpose, such Covenant Defeasance means
that the Company may omit to comply with and shall have no liability in respect
of any term, condition or limitation set forth in any such specified Section (to
the extent

                                       74
<PAGE>

so specified in the case of Section 501(4)), whether directly or indirectly by
reason of any reference elsewhere herein to any such Section or by reason of any
reference in any such Section to any other provision herein or in any other
document, but the remainder of this Indenture and the Securities of such series
shall be unaffected thereby.

         SECTION 1304. CONDITIONS TO DEFEASANCE OR COVENANT DEFEASANCE.

         The following shall be the conditions to application of either Section
1302 or Section 1303 to the Outstanding Securities of any series:

                  (1) The Company shall elect by Board Resolution to effect a
         Defeasance pursuant to Section 1302 or a Covenant Defeasance pursuant
         to Section 1303 with respect to the Outstanding Securities of any
         series specified in such Board Resolution (the "Defeasible Series").

                  (2) The Company shall irrevocably have deposited or caused to
         be deposited with the Trustee (or another trustee that satisfies the
         requirements contemplated by Section 609 and agrees to comply with the
         provisions of this Article Thirteen applicable to it) as trust funds in
         trust for the purpose of making the following payments, specifically
         pledged as security for, and dedicated solely to, the benefit of the
         Holders of Outstanding Securities of such series, (i) money in an
         amount, or (ii) U.S. Government Obligations that through the scheduled
         payment of principal and interest in respect thereof in accordance with
         their terms will provide, not later than one day before the due date of
         any payment, money in an amount, or (iii) a combination thereof, in
         each case sufficient, in the opinion of a nationally recognized firm of
         independent public accountants expressed in a written certification
         thereof delivered to the Trustee, to pay and discharge, and which shall
         be applied by the Trustee (or any such other qualifying trustee) to pay
         and discharge, the principal of and any premium and interest on the
         Securities of such series on the respective Stated Maturities, in
         accordance with the terms of this Indenture and the Securities of such
         series. As used herein, "U.S. Government Obligation" means (x) any
         security that is (i) a direct obligation of the United States of
         America for the payment of which full faith and credit of the United
         States of America is pledged or (ii) an obligation of a Person
         controlled or supervised by and acting as an agency or instrumentality
         for the United States of America the payment of which is
         unconditionally guaranteed as a full faith and credit obligation by the
         United States of America, which, in either case (i) or (ii), is not
         callable or redeemable at the option of the issuer thereof, and (y) any
         depositary receipt issued by a bank (as defined in Section 3(a)(2) of
         the Securities Act of 1933, as amended) as custodian with respect to
         any specific payment of principal of or interest on any such U.S.
         Government Obligation specified in Clause (x) and held by such
         custodian for the account of the holder of such depositary receipt, or
         with respect to any specific payment of principal of or interest on any
         such U.S. Government Obligation; provided that (except as required by
         law) such custodian is not authorized to make any deduction from the
         amount payable to the Holder of such depositary receipt from any amount
         received by the custodian in respect of the U.S. Government Obligation
         or the specific payment of principal or interest evidenced by such
         depositary receipt.

                                       75
<PAGE>

                  (3) In the case of an election under Section 1302, the Company
         shall have delivered to the Trustee an Opinion of Counsel stating that
         (i) the Company has received from, or there has been published by, the
         Internal Revenue Service, a ruling or (ii) since the date hereof, there
         has been a change in the applicable U.S. Federal income tax law, in
         case of either (i) or (ii) to the effect that, and based thereon such
         opinion shall confirm that, the Holders of such Securities will not
         recognize gain or loss for U.S. Federal income tax purposes as a result
         of the deposit, Defeasance and discharge to be effected with respect to
         the Securities of such series and will be subject to U.S. Federal
         income tax on the same amount, in the same manner and at the same times
         as would be the case if such deposit, Defeasance and discharge were not
         to occur.

                  (4) In the case of an election under Section 1303, the Company
         shall have delivered to the Trustee an Opinion of Counsel to the effect
         that the Holder of the Outstanding Securities of such series will not
         recognize gain or loss for U.S. Federal income tax purposes as result
         of the deposit and Covenant Defeasance to be effected with respect to
         the Securities of such series and will be subject to U.S. Federal
         income tax on the same amount, in the same manner and at the same times
         as would be the case if such deposit and Covenant Defeasance were not
         to occur.

                  (5) The Company shall have delivered to the Trustee an
         Officers' Certificate to the effect that the Securities of such series,
         if then listed on any securities exchange, will not be delisted as a
         result of such deposit.

                  (6) No Event of Default or Default shall have occurred and be
         continuing at the time of such deposit or, with regard to any Event of
         Default or any such event specified in Sections 501(5) and 501(6), at
         any time on or prior to the 90th day after the date of such deposit (it
         being understood that this condition shall not be deemed satisfied
         until after such 90th day).

                  (7) The Company shall have delivered to the Trustee an
         Officers' Certificate and an Opinion of Counsel, each stating that all
         conditions precedent with respect to such Defeasance or Covenant
         Defeasance have been complied with.

                  (8) Such Defeasance or Covenant Defeasance shall not result in
         the trust arising from such deposit constituting an investment company
         within the meaning of the Investment Company Act of 1940, as amended,
         unless such trust shall be qualified under such Act or exempt from
         regulation thereunder.

         SECTION 1305. DEPOSITED MONEY AND U.S. GOVERNMENT OBLIGATIONS TO BE
         HELD IN TRUST; OTHER MISCELLANEOUS PROVISIONS.

         Subject to the provisions of the last paragraph of Section 1006, all
money and U.S. Government Obligations (including the proceeds thereof) deposited
with the Trustee or other qualifying trustee (solely for purposes of this
Section and Section 1306, the Trustee and any such other trustee are referred to
collectively as the "Trustee") pursuant to Section 1304 in respect of the
Securities of any Defeasible Series shall be held in trust and applied by the
Trustee, in

                                       76
<PAGE>

accordance with the provisions of the Securities of such series and this
Indenture, to the payment, either directly or through any such Paying Agent
(including the Company acting as its own Paying Agent) as the Trustee may
determine, to the Holders of Securities of such series, of all sums due and to
become due thereon in respect of principal and any premium and interest, but
money so held in trust need not be segregated from other funds except to the
extent required by law.

         The Company shall pay and indemnify the Trustee against any tax, fee or
other charge imposed on or assessed against the U.S. Government Obligations
deposited pursuant to Section 1304 or the principal and interest received in
respect thereof other than any such tax, fee or other charge that by law is for
the account of the Holders of Outstanding Securities.

         Anything in this Article Thirteen to the contrary notwithstanding, the
Trustee shall deliver or pay to the Company from time to time upon Company
Request any money or U.S. Government Obligations held by it as provided in
Section 1304 with respect to Securities of any Defeasible Series that, in the
opinion of a nationally recognized firm of independent public accountants
expressed in a written certification thereof delivered to the Trustee, are in
excess of the amount thereof that would then be required to be deposited to
effect an equivalent Defeasance or Covenant Defeasance with respect to the
Securities of such series.

         SECTION 1306. REINSTATEMENT.

         If the Trustee or the Paying Agent is unable to apply any money in
accordance with this Article Thirteen with respect to the Securities of any
series by reason of any order or judgment of any court or governmental authority
enjoining, restraining or otherwise prohibiting such application, then the
Company's and any Guarantor's (if applicable) obligations under this Indenture
and the Securities of such series and the Guarantee shall be revived and
reinstated as though no deposit had occurred pursuant to this Article Thirteen
with respect to Securities of such series until such time as the Trustee or
Paying Agent is permitted to apply all money held in trust pursuant to Section
1305 with respect to Securities of such series in accordance with this Article
Thirteen; provided, however, that if the Company makes any payment of principal,
premium, if any, or interest, if any, on any Security of such series following
the reinstatement of its obligations, the Company shall be subrogated to the
rights of the Holders of Securities of such series to receive such payment from
the money so held in trust.

                                ARTICLE FOURTEEN

                                  SINKING FUNDS

         SECTION 1401. APPLICABILITY OF ARTICLE.

         The provisions of this Article shall be applicable to any sinking fund
for the retirement of Securities of a series except as otherwise specified as
contemplated by Section 301 for Securities of such series.

                                       77
<PAGE>

         The minimum amount of any sinking fund payment provided for by the
terms of Securities of any series is herein referred to as a "mandatory sinking
fund payment," and any payment in excess of such minimum amount provided for by
the terms of Securities of any series is herein referred to as an "optional
sinking fund payment." If provided for by the terms of Securities of any series,
the cash amount of any sinking fund payment may be subject to reduction as
provided in Section 1211. Each sinking fund payment shall be applied to the
redemption of Securities of any series as provided for by the terms of
Securities of such series.

         SECTION 1402. SATISFACTION OF SINKING FUND PAYMENTS WITH SECURITIES.

         The Company (1) may deliver Outstanding Securities of a series (other
than any previously called for redemption) and (2) may apply as a credit
Securities of a series which have been converted pursuant to Article Twelve or
Securities of a series which have been acquired or redeemed either at the
election of the Company pursuant to the terms of such Securities or through the
application of permitted optional sinking fund payments pursuant to the terms of
such Securities or otherwise, in each case in satisfaction of all or any part of
any sinking fund payment with respect to the Securities of such series required
to be made pursuant to the terms of such Securities as provided for by the terms
of such series; provided that such Securities have not been previously so
credited. Such Securities shall be received and credited for such purpose by the
Trustee at the Redemption Price specified in such Securities for redemption
through operation of the sinking fund and the amount of such sinking fund
payment shall be reduced accordingly.

         SECTION 1403. REDEMPTION OF SECURITIES FOR SINKING FUND.

         Not less than 60 days prior to each sinking fund payment date for any
series of Securities, the Company shall deliver to the Trustee an Officers'
Certificate specifying the amount of the next ensuing sinking fund payment for
that series pursuant to the terms of that series, the portion thereof, if any,
which is to be satisfied by payment of cash and the portion thereof, if any,
which is to be satisfied by delivering and crediting Securities of that series
pursuant to Section 1402 and will also deliver to the Trustee any Securities to
be so delivered. Not less than 30 nor more than 60 days before each such sinking
fund payment date the Trustee shall select the Securities to be redeemed upon
such sinking fund payment date in the manner specified in Section 1103 and cause
notice of the redemption thereof to be given in the name of and at the expense
of the Company in the manner provided in Section 1104 and provide a copy thereof
to the Company five (5) days in advance of the mailing thereof. Such notice
having been duly given, the redemption of such Securities shall be made upon the
terms and in the manner stated in Sections 1105, 1106 and 1107.

                                       78
<PAGE>

                                 ARTICLE FIFTEEN

                         REPAYMENT AT OPTION OF HOLDERS

         SECTION 1501. APPLICABILITY OF ARTICLE.

         Repayment of Securities of any series before their Stated Maturity at
the option of Holders thereof shall be made in accordance with the terms of such
Securities and (except as otherwise specified as contemplated by Section 301 for
Securities of any series) in accordance with this Article.

         SECTION 1502. REPAYMENT OF SECURITIES.

         Securities of any series subject to repayment in whole or in part at
the option of the Holders thereof will, unless otherwise provided in the terms
of such Securities, be repaid at a price equal to the principal amount thereof,
together with interest, if any, thereon accrued to the Repayment Date specified
in or pursuant to the terms of such Securities. The Company covenants that on or
before the Repayment Date it will deposit with the Trustee or with a Paying
Agent (or, if the Company is acting as its own Paying Agent, segregate and hold
in trust as provided in Section 1006) an amount of money in the currency in
which the Securities of such series are payable (except as otherwise specified
pursuant to Section 301 for the Securities of such series) sufficient to pay the
principal (or, if so provided by the terms of the Securities of any series, a
percentage of the principal) of, and (except if the Repayment Date shall be an
Interest Payment Date) accrued interest on, all the Securities or portions
thereof, as the case may be, to be repaid on such date.

         SECTION 1503. EXERCISE OF OPTION.

         Securities of any series subject to repayment at the option of the
Holders thereof will contain an "Option to Elect Repayment" form on the reverse
of such Securities. To be repaid at the option of the Holder, any Security so
providing for such repayment, with the "Option to Elect Repayment" form on the
reverse of such Security duly completed by the Holder (or by the Holder's
attorney duly authorized in writing), must be received by the Company at the
Place of Payment therefor specified in the terms of such Security (or at such
other place or places or which the Company shall from time notify the Holders of
such Securities) not earlier than 45 days nor later than 30 days prior to the
Repayment Date. If less than the entire principal amount of such Security is to
be repaid in accordance with the terms of such Security, the principal amount of
such Security to be repaid, in increments of the minimum denomination for
Securities of such series, and the denomination or denominations of the Security
or Securities to be issued to the Holder for the portion of the principal amount
of such Security surrendered that is not to be repaid, must be specified. The
principal amount of any Security providing for repayment at the option of the
Holder thereof may not be repaid in part if, following such repayment, the
unpaid principal amount of such Security would be less than the minimum
authorized denomination of Securities of the series of which such Security to be
repaid is a part. Except as otherwise may be provided by the terms of any
Security providing for repayment at the option of

                                       79
<PAGE>

the Holder thereof, exercise of the repayment option by the Holder shall be
irrevocable unless waived by the Company.

         SECTION 1504. WHEN SECURITIES PRESENTED FOR REPAYMENT BECOME DUE AND
         PAYABLE.

         If Securities of any series providing for repayment at the option of
the Holders thereof shall have been surrendered as provided in this Article and
as provided by or pursuant to the terms of such Securities, such Securities or
the portions thereof, as the case may be, to be repaid shall become due and
payable and shall be paid by the Company on the Repayment Date therein
specified, and on and after such Repayment Date (unless the Company shall
default in the payment of such Securities on such Repayment Date) such
Securities shall, if the same were interest-bearing, cease to bear interest.
Upon surrender of any such Security for repayment in accordance with such
provisions, the principal amount of such Security so to be repaid shall be paid
by the Company, together with accrued interest, if any, to the Repayment Date;
provided, however, that installments of interest, if any, whose Stated Maturity
is on or prior to the Repayment Date shall be payable to the Holders of such
Securities, or one or more Predecessor Securities, registered as such at the
close of business on the relevant Record Dates according to their terms and the
provisions of Section 307.

         If the principal amount of any Security surrendered for repayment shall
not be so repaid upon surrender thereof, such principal amount (together with
interest, if any, thereon accrued to such Repayment Date) shall, until paid,
bear interest from the Repayment Date at the rate of interest or Yield to
Maturity (in the case of Original Issue Discount Securities) set forth in such
Security.

         SECTION 1505. SECURITIES REPAID IN PART.

         Upon surrender of any Security which is to be repaid in part only, the
Company shall execute and the Trustee shall authenticate and deliver to the
Holder of such security, without service charge and at the expense of the
Company, a new Security or Securities of the same series, of any authorized
denomination specified by the Holder, in an aggregate principal amount equal to
and in exchange for the portion of the principal of such Security so surrendered
which is not to be repaid.

         This instrument may be executed in any number of counterparts, each of
which so executed shall be deemed to be an original, but all such counterparts
shall together constitute but one and the same instrument.

                                       80
<PAGE>

                                 ARTICLE SIXTEEN

                             GUARANTEE OF SECURITIES

         SECTION 1601. GUARANTEE.

         Any series of Securities may be guaranteed by one or more of the U.S.
Guarantor and any other Guarantor. The terms and the form of any such Guarantee
will be established in the manner contemplated by Section 301 for that
particular series of Securities.

                                      * * *

This instrument may be executed in any number of counterparts, each of which so
executed shall be deemed to be an original, but all such counterparts shall
together constitute but one and the same instrument.

                                       81
<PAGE>

         IN WITNESS WHEREOF, the parties hereto have caused this Indenture to be
duly executed, and their respective corporate seals to be hereunto affixed and
attested, all as of the day and year first above written.

                                             COMPANY:

                                             NABORS INDUSTRIES LTD.

                                             By:
                                                ---------------------------
                                             Name:
                                             Title:

                                             GUARANTOR:

                                             NABORS INDUSTRIES, INC.

                                             By:
                                                ---------------------------
                                             Name:
                                             Title:

                                             TRUSTEE:

                                             BANK ONE, N.A.

                                             By:
                                                ---------------------------
                                             Name:
                                             Title:

                                       82
<PAGE>

STATE OF NEW YORK               )
                                ) ss.:
COUNTY OF NEW YORK              )

         On the ____ day of _________________, before me personally came
_____________________, to me known, who, being by me duly sworn, did depose and
say that (s)he is __________________ of NABORS INDUSTRIES, INC., one of the
corporations described in and which executed the foregoing instrument; that
(s)he knows the seal of said corporation; that the seal affixed to said
instrument is such corporate seal; that it was so affixed by authority of the
Board of Directors of said corporation, and that (s)he signed her/his name
thereto by like authority.

                                       83
<PAGE>

STATE OF NEW YORK               )
                                ) ss.:
COUNTY OF NEW YORK              )

         On the ____ day of _________________, before me personally came
_____________________, to me known, who, being by me duly sworn, did depose and
say that (s)he is __________________ of NABORS INDUSTRIES LTD., one of the
corporations described in and which executed the foregoing instrument; that
(s)he knows the seal of said corporation; that the seal affixed to said
instrument is such corporate seal; that it was so affixed by authority of the
Board of Directors of said corporation, and that (s)he signed her/his name
thereto by like authority.

                                       84
<PAGE>

STATE OF NEW YORK               )
                                ) ss.:
COUNTY OF NEW YORK              )

         On the ____ day of ___________________, before me personally came
________________, to me known, who, being by me duly sworn, did depose and say
that (s)he is ___________________ of BANK ONE, N.A., one of the corporations
described in and which executed the foregoing instrument; that (s)he knows the
seal of said corporation; that the seal affixed to said instrument is such
corporate seal; that it was so affixed by authority of the Board of Directors of
said corporation, and that (s)he signed her/his name thereto by like authority.

                                       85<PAGE>
                                                                     EXHIBIT 4.2

--------------------------------------------------------------------------------

                        NABORS INDUSTRIES LTD., AS ISSUER

                     NABORS INDUSTRIES, INC., AS GUARANTOR,

                                       AND

                           BANK ONE, N.A., AS TRUSTEE

                               -------------------

                                    INDENTURE

                         DATED AS OF
                                     ------------------

                               -------------------

                          SUBORDINATED DEBT SECURITIES

--------------------------------------------------------------------------------

<PAGE>

                             NABORS INDUSTRIES LTD.

                 Reconciliation and tie between certain Sections
                of this Indenture, dated as of ______________ and
                     Sections 310 through 318, inclusive, of
                        the Trust Indenture Act of 1939:

<Table>
<Caption>
Trust Indenture
Act Section                                                                         Indenture Section
---------------                                                                     -----------------
<S>  <C>                                                                            <C>
310  (a)(1).......................................................................................609
     (a)(2).......................................................................................609
     (a)(3)............................................................................Not Applicable
     (a)(4)............................................................................Not Applicable
     (a)(5).......................................................................................609
     (b)..........................................................................................608
     .............................................................................................610

311  (a)..........................................................................................613
     (b)..........................................................................................613

312  (a)..........................................................................................701
     ..........................................................................................702(a)
     (b).......................................................................................702(b)
     (c).......................................................................................702(c)

313  (a).......................................................................................703(a)
     (b).......................................................................................703(a)
     (c).......................................................................................703(a)
     (d).......................................................................................703(b)

314  (a)..........................................................................................704
     (a)(4).......................................................................................101
     ............................................................................................1004
     (b)...............................................................................Not Applicable
     (c)(1).......................................................................................103
     (c)(2).......................................................................................103
     (c)(3)............................................................................Not Applicable
     (d)...............................................................................Not Applicable
     (e)..........................................................................................103
</Table>

<PAGE>

<Table>
<S>  <C>                                                                            <C>
315  (a)..........................................................................................601
     (b)..........................................................................................602
     (c)..........................................................................................601
     (d)..........................................................................................601
     (e)..........................................................................................514

316  (a)..........................................................................................101
     .............................................................................................102
     (a)(1)(A)....................................................................................502
     .............................................................................................512
     (a)(1)(B)....................................................................................513
     (a)(2)............................................................................Not Applicable
     (b)..........................................................................................508
     (c).......................................................................................105(c)

317  (a)(1).......................................................................................503
     (a)(2).......................................................................................504
     (b).........................................................................................1006

318  (a)..........................................................................................108
</Table>

------------------
NOTE: This reconciliation and tie shall not, for any purpose, be deemed to be a
part of the Indenture.

                                       ii
<PAGE>

                                TABLE OF CONTENTS

<Table>
<Caption>
                                                                            Page
                                                                            ----
<S>               <C>                                                       <C>
PARTIES
RECITALS OF THE COMPANY

                                   ARTICLE ONE

                        Definitions and Other Provisions
                             of General Application

Section 101.      Definitions................................................. 1
                  Act......................................................... 2
                  Affiliate................................................... 2
                  Authenticating Agent........................................ 2
                  Authorized Agent............................................ 2
                  Bankruptcy Law.............................................. 2
                  Board of Directors.......................................... 2
                  Board Resolution............................................ 2
                  Business Day................................................ 3
                  "CINS"...................................................... 3
                  Commission.................................................. 3
                  Company..................................................... 3
                  Company Request or Company Order............................ 3
                  Conversion Rate............................................. 3
                  Corporate Trust Office...................................... 3
                  corporation................................................. 3
                  Covenant Defeasance......................................... 3
                  "CUSIP"..................................................... 3
                  days........................................................ 3
                  Debt........................................................ 3
                  Default..................................................... 4
                  Defaulted Interest.......................................... 4
                  Defeasance.................................................. 4
                  Defeasible Series........................................... 4
                  Depositary.................................................. 4
                  Dollar or $................................................. 4
                  Event of Default............................................ 4
                  Exchange Act................................................ 4
                  Exchange Securities......................................... 4
                  Floating or Adjustable Rate Provision....................... 4
</Table>

                                      iii
<PAGE>

<Table>
<S>               <C>                                                       <C>
                  Floating or Adjustable Rate Security.........................
                  Foreign Currency............................................. 4
                  Foreign Entities............................................. 4
                  Global Security.............................................. 4
                  Guarantee.................................................... 4
                  Guarantor.................................................... 5
                  Holder....................................................... 5
                  Indenture.................................................... 5
                  interest..................................................... 5
                  Interest Payment Date........................................ 5
                  Issuing Company.............................................. 5
                  Judgment Currency............................................ 5
                  Maturity..................................................... 5
                  Market Exchange Rate......................................... 5
                  Notice of Default............................................ 5
                  Officers' Certificate........................................ 5
                  Opinion of Counsel........................................... 5
                  Original Issue Discount Security............................. 6
                  Outstanding.................................................. 6
                  Paying Agent................................................. 6
                  Payment Blockage Notice...................................... 6
                  Payment Blockage Period...................................... 7
                  Person....................................................... 7
                  PIK Securities............................................... 7
                  Place of Payment............................................. 7
                  Predecessor Security......................................... 7
                  Redemption Date.............................................. 7
                  Redemption Price............................................. 7
                  Regular Record Date.......................................... 7
                  Required Currency............................................ 7
                  Responsible Officer.......................................... 7
                  Securities................................................... 7
                  Security Register and Security Registrar..................... 7
                  Senior Debt.................................................. 7
                  Senior Nonmonetary Default................................... 8
                  Special Record Date.......................................... 8
                  Stated Maturity.............................................. 8
                  Subsidiary................................................... 8
                  trading day.................................................. 8
                  Trustee...................................................... 8
                  Trust Indenture Act.......................................... 8
                  U.S. Government Obligation................................... 8
                  U.S. Guarantor............................................... 8
                  Vice President............................................... 8
Section 102.      Incorporation by Reference of Trust Indenture Act............ 9
Section 103.      Compliance Certificates and Opinions......................... 9
</Table>

                                       iv
<PAGE>

<Table>
<S>               <C>                                                                    <C>
Section 104.      Form of Documents Delivered to Trustee................................... 10
Section 105.      Acts of Holders; Record Dates............................................ 10
Section 106.      Notices, Etc. to Trustee and Company..................................... 12
Section 107.      Notice to Holders; Waiver................................................ 12
Section 108.      Conflict with Trust Indenture Act........................................ 13
Section 109.      Effect of Headings and Table of Contents................................. 13
Section 110.      Successors and Assigns................................................... 13
Section 111.      Separability Clause...................................................... 13
Section 112.      Benefits of Indenture.................................................... 13
Section 113.      Governing Law, Consent to Jurisdiction and Service of Process and
                  Waiver of Immunity....................................................... 13
Section 114.      Legal Holidays........................................................... 14
Section 115.      Securities in a Composite Currency, Currency Unit or Foreign Currency.... 15
Section 116.      Payment in Required Currency; Judgment Currency.......................... 15
Section 117.      Language of Notices, Etc................................................. 16
Section 118.      Personal Immunity from Liability for Incorporators, Stockholders, Etc.... 16

                                   ARTICLE TWO
                                 Security Forms

Section 201.      Forms Generally.......................................................... 16
Section 202.      Form of Face of Security................................................. 17
Section 203.      Form of Reverse of Security.............................................. 19
Section 204.      Form of Legend for Global Securities..................................... 24
Section 205.      Form of Trustee's Certificate of Authentication.......................... 25
Section 206.      Form of Conversion Notice................................................ 25
Section 207.      Securities Issuable in Global Form....................................... 26

                                  ARTICLE THREE
                                 The Securities

Section 301.      Amount Unlimited; Issuable in Series..................................... 27
Section 302.      Denominations............................................................ 30
Section 303.      Execution, Authentication, Delivery and Dating........................... 30
Section 304.      Temporary Securities..................................................... 32
Section 305.      Registration, Registration of Transfer and Exchange...................... 32
Section 306.      Mutilated, Destroyed, Lost and Stolen Securities......................... 34
Section 307.      Payment of Interest; Interest Rights Preserved........................... 34
Section 308.      Persons Deemed Owners.................................................... 36
Section 309.      Cancellation............................................................. 36
Section 310.      Computation of Interest.................................................. 36
Section 311.      CUSIP or CINS Numbers.................................................... 36
</Table>

                                       v
<PAGE>

<Table>
<S>               <C>                                                                      <C>

                                  ARTICLE FOUR
                           Satisfaction and Discharge

Section 401.      Satisfaction and Discharge of Indenture................................. 37
Section 402.      Application of Trust Fund............................................... 38

                                  ARTICLE FIVE
                                    Remedies

Section 501.      Events of Default....................................................... 39
Section 502.      Acceleration of Maturity; Rescission and Annulment...................... 40
Section 503.      Collection of Indebtedness and Suits for Enforcement by Trustee......... 41
Section 504.      Trustee May File Proofs of Claim........................................ 42
Section 505.      Trustee May Enforce Claims Without Possession of Securities............. 42
Section 506.      Application of Money Collected.......................................... 43
Section 507.      Limitation on Suits..................................................... 43
Section 508.      Unconditional Right of Holders to Receive Principal, Premium............ 44
                  and Interest and to Convert
Section 509.      Restoration of Rights and Remedies...................................... 44
Section 510.      Rights and Remedies Cumulative.......................................... 44
Section 511.      Delay or Omission Not Waiver............................................ 44
Section 512.      Control by Holders...................................................... 45
Section 513.      Waiver of Past Defaults................................................. 45
Section 514.      Undertaking for Costs................................................... 45

                                   ARTICLE SIX
                                   The Trustee

Section 601.      Certain Duties and Responsibilities..................................... 46
Section 602.      Notice of Defaults...................................................... 47
Section 603.      Certain Rights of Trustee............................................... 47
Section 604.      Not Responsible for Recitals or Issuance of Securities.................. 48
Section 605.      May Hold Securities..................................................... 49
Section 606.      Money Held in Trust..................................................... 49
Section 607.      Compensation and Reimbursement.......................................... 49
Section 608.      Disqualification; Conflicting Interests................................. 50
Section 609.      Corporate Trustee Required; Eligibility................................. 50
Section 610.      Resignation and Removal; Appointment of Successor....................... 50
Section 611.      Acceptance of Appointment by Successor.................................. 52
Section 612.      Merger, Conversion, Consolidation or Succession to Business............. 53
Section 613.      Preferential Collection of Claims Against Company....................... 53
Section 614.      Appointment of Authenticating Agent..................................... 53

                                  ARTICLE SEVEN
                Holders' Lists and Reports by Trustee and Company

Section 701.      Company to Furnish Trustee Names and Addresses of Holders............... 55
Section 702.      Preservation of Information; Communications to Holders.................. 55
Section 703.      Reports by Trustee...................................................... 56
</Table>

                                       vi
<PAGE>

<Table>
<S>               <C>                                                                      <C>
Section 704.      Reports by Company

                                  ARTICLE EIGHT
                    Consolidation, Merger, or Sale of Assets

Section 801.      Company and Guarantors May Consolidate, Etc. Only on Certain Terms...... 56
Section 802.      Successor Substituted................................................... 57

                                  ARTICLE NINE
                             Supplemental Indentures

Section 901.      Supplemental Indentures Without Consent of Holders...................... 58
Section 902.      Supplemental Indentures With Consent of Holders......................... 59
Section 903.      Execution of Supplemental Indentures.................................... 60
Section 904.      Effect of Supplemental Indentures....................................... 61
Section 905.      Revocation and Effect of Consents....................................... 61
Section 906.      Conformity with Trust Indenture Act..................................... 61
Section 907.      Reference in Securities to Supplemental Indentures...................... 61
Section 908.      Waiver of Compliance by Holders......................................... 61
Section 909.      Notice of Supplemental Indenture........................................ 62
Section 910.      Subordination Unimpaired................................................ 62

                                   ARTICLE TEN
                                    Covenants

Section 1001.     Payment of Principal, Premium and Interest.............................. 62
Section 1002.     Maintenance of Office or Agency......................................... 62
Section 1003.     Commission Reports; Financial Statements................................ 63
Section 1004.     Compliance Certificate.................................................. 63
Section 1005.     Corporate Existence..................................................... 64
Section 1006.     Money for Securities Payments to Be Held in Trust....................... 64
Section 1007.     Waiver of Certain Covenants............................................. 65

                                 ARTICLE ELEVEN
                            Redemption of Securities

Section 1101.     Applicability of Article................................................ 65
Section 1102.     Election to Redeem; Notice to Trustee................................... 65
Section 1103.     Selection by Trustee of Securities to Be Redeemed....................... 66
Section 1104.     Notice of Redemption.................................................... 66
Section 1105.     Deposit of Redemption Price............................................. 67
Section 1106.     Securities Payable on Redemption Date................................... 68
Section 1107.     Securities Redeemed in Part............................................. 68

                                 ARTICLE TWELVE
                            Conversion of Securities
</Table>

                                      vii
<PAGE>

<Table>
<S>               <C>                                                                  <C>
Section 1201.     Applicability of Article............................................ 68
Section 1202.     Exercise of Conversion Privilege.................................... 68
Section 1203.     No Fractional Shares................................................ 70
Section 1204.     Adjustment of Conversion Price...................................... 70
Section 1205.     Notice of Certain Corporate Actions................................. 71
Section 1206.     Reservation of Exchange Securities.................................. 72
Section 1207.     Payment of Certain Taxes Upon Conversion............................ 72
Section 1208.     Nonassessability.................................................... 72
Section 1209.     Effect of Consolidation or Merger on Conversion Privilege........... 72
Section 1210.     Duties of Trustee Regarding Conversion.............................. 73
Section 1211.     Repayment of Certain Funds Upon Conversion.......................... 74

                                ARTICLE THIRTEEN
                       Defeasance and Covenant Defeasance

Section 1301.     Company's Option to Effect Defeasance or Covenant Defeasance........ 74
Section 1302.     Defeasance and Discharge............................................ 74
Section 1303.     Covenant Defeasance................................................. 75
Section 1304.     Conditions to Defeasance or Covenant Defeasance..................... 75
Section 1305.     Deposited Money and U.S. Government Obligations to be Held
                  In Trust; Other Miscellaneous Provisions............................ 77
Section 1306.     Reinstatement....................................................... 78

                                ARTICLE FOURTEEN
                                  Sinking Funds

Section 1401.     Applicability of Article............................................ 78
Section 1402.     Satisfaction of Sinking Fund Payments with Securities............... 78
Section 1403.     Redemption of Securities for Sinking Fund........................... 79

                                 ARTICLE FIFTEEN
                         Repayment at Option of Holders

Section 1501.     Applicability of Article............................................ 79
Section 1502.     Repayment of Securities............................................. 79
Section 1503.     Exercise of Option.................................................. 80
Section 1504.     When Securities Presented for Repayment Become Due and Payable...... 80
Section 1505.     Securities Repaid in Part........................................... 80

                                 ARTICLE SIXTEEN
                             Guarantee of Securities

Section 1601.     Guarantee........................................................... 81
</Table>

                                      viii
<PAGE>

<Table>
<S>               <C>                                                               <C>
                                ARTICLE SEVENTEEN
                           Subordination of Securities

Section 1701.     Securities Subordinated to Senior Debt............................ 81
Section 1702.     Distribution on Dissolution, Liquidation and Reorganization;
                  Subrogation of Securities......................................... 82
Section 1703.     Payments on Securities Permitted.................................. 84
Section 1704.     Authorization of Holders of Securities to Trustee to
                  Effect Subordination.............................................. 84
Section 1705.     Notices to Trustee................................................ 84
Section 1706.     Trustee as Holder of Senior Debt.................................. 85
Section 1707.     Modification of Terms of Senior Debt.............................. 85

NOTE: This table of contents shall not, for any purpose, be deemed to be a part
of the Indenture.
</Table>

                                       ix
<PAGE>

         INDENTURE, dated as of _______________, among Nabors Industries Ltd., a
Bermuda exempted company (herein called the "Company"), having its principal
office at 2nd Fl. International Centre, Warrens, P.O. Box 905E, St. Michael,
Barbados, Nabors Industries, Inc., a Delaware corporation (herein called the
"U.S. Guarantor"), having its principal office at 515 West Greens Road, Suite
1200, Houston, Texas 77067, and Bank One, N.A., as Trustee (herein called the
"Trustee").

                             RECITALS OF THE COMPANY

         The Company has duly authorized the execution and delivery of this
Indenture to provide for the issuance from time to time of its subordinated
debentures, notes or other evidences of indebtedness (herein called the
"Securities"), to be issued in one or more series as provided in this Indenture.

         This Indenture is subject to the provisions of the Trust Indenture Act
that are required to be a part of this Indenture and shall, to the extent
applicable, be governed by such provisions.

         All things necessary to make this Indenture a valid agreement of the
Company and of the U.S. Guarantor, in accordance with its terms, have been done.

         NOW, THEREFORE, THIS INDENTURE WITNESSETH:

         For and in consideration of the premises and the purchase of the
Securities by the Holders thereof, it is mutually agreed, for the equal and
proportionate benefit of all Holders of the Securities or of series thereof, as
follows:

                                   ARTICLE ONE

             Definitions and Other Provisions of General Application

         Section 101. Definitions.

         (a) For all purposes of this Indenture, except as otherwise expressly
provided or unless the context otherwise requires:

                  (1) the terms defined in this Article have the meanings
         assigned to them in this Article and include the plural as well as the
         singular;

                  (2) all other terms used herein which are defined in the Trust
         Indenture Act or the Securities Act of 1933, as amended, either
         directly or by reference therein, have the meanings assigned to them
         therein;

                  (3) all accounting terms not otherwise defined herein have the
         meanings assigned to them in accordance with generally accepted
         accounting principles in the United States of America, and, except as
         otherwise herein expressly provided, the term "generally

<PAGE>

         accepted accounting principles" with respect to any computation
         required or permitted hereunder shall mean such accounting principles
         as are generally accepted at the date of such computation;

                  (4) the words "Article" and "Section" refer to an Article and
         Section, respectively, of this Indenture; and

                  (5) the words "herein," "hereof" and "hereunder" and other
         words of similar import refer to this Indenture as a whole and not to
         any particular Article, Section or other subdivision unless context
         otherwise requires.

         (b) Unless otherwise provided, references to agreements and other
instruments shall be deemed to include all amendments and other modifications to
such agreements and instruments, but only to the extent such amendments and
modifications are not prohibited by the terms of this Indenture.

         "Act," when used with respect to any Holder, has the meaning specified
in Section 105.

         "Affiliate" of any specified Person means any other Person directly or
indirectly controlling or controlled by, or under direct or indirect common
control with, such specified Person. For purposes of this definition, "control"
of a Person means the power to direct the management and policies of such
Person, directly or indirectly, whether through the ownership of voting
securities, by contract or otherwise, and the terms "controlling" and
"controlled" shall have meanings correlative to the foregoing. The Trustee may
request and may conclusively rely upon an Officers' Certificate to determine
whether any Person is an Affiliate of any specified Person.

         "Authenticating Agent" means any Person authorized by the Trustee
pursuant to Section 614 to act on behalf of the Trustee to authenticate
Securities of one or more series.

         "Authorized Agent" has the meaning specified in Section 113.

         "Bankruptcy Law" means Title 11, U.S. Code or any similar U.S. Federal
or state law or any similar Bermuda or other foreign law for the relief of
debtors.

         "Board of Directors" means either the board of directors of the Company
or of any Guarantor, as applicable, or any duly authorized committee of that
board.

         "Board Resolution" means a copy of a resolution certified by the
Secretary or an Assistant Secretary of the Company or any Guarantor, the
principal financial officer of the Company or any Guarantor, any other
authorized officer of the Company or any Guarantor, or a person duly authorized
by any of them, in each case as applicable, to have been duly adopted by the
Board of Directors and to be in full force and effect on the date of such
certification, and delivered to the Trustee. Where any provision of this
Indenture refers to action to be taken pursuant to a Board Resolution (including
the establishment of any series of the Securities and the forms and terms
thereof), such action may be taken by any committee, officer or employee of

                                       2
<PAGE>

the Company or any Guarantor, as applicable, authorized to take such action by
the Board of Directors as evidenced by a Board Resolution.

         "Business Day," when used with respect to any Place of Payment, means
each Monday, Tuesday, Wednesday, Thursday and Friday which is not a day on which
banking institutions in that Place of Payment are authorized or obligated by law
or executive order to close.

         "CINS" means CUSIP International Numbering System.

         "Commission" means the Securities and Exchange Commission, as from time
to time constituted, created under the Exchange Act, or, if at any time after
the execution of this instrument such Commission is not existing and performing
the duties now assigned to it under the Trust Indenture Act, then the body
performing such duties at such time.

         "Company" means the Person named as the "Company" in the first
paragraph of this instrument until a successor Person shall have become such
pursuant to the applicable provisions of this Indenture, and thereafter
"Company" shall mean such successor Person.

         "Company Request" or "Company Order" means, in the case of the Company,
a written request or order signed in the name of the Company by its Chairman of
the Board, its Chief Executive Officer, its President, any of its Vice
Presidents or any other duly authorized officer of the Company or any person
duly authorized by any of them, and delivered to the Trustee and, in the case of
any Guarantor, a written request or order signed in the name of such Guarantor
by its Chairman of the Board, its Chief Executive Officer, its President, any of
its Vice Presidents or any other duly authorized officer of such Guarantor or
any person duly authorized by any of them, and delivered to the Trustee.

         "Conversion Rate" has the meaning specified in Section 1204.

         "Corporate Trust Office" means the principal office of the Trustee at
which at any particular time this Indenture shall be administered, which office
at the date hereof is located at 1111 Polaris Parkway, Suite OH1-0181, Columbus,
Ohio 43240.

         "corporation" means a corporation, association, company, joint-stock
company or business trust.

         "Covenant Defeasance" has the meaning specified in Section 1303.

         "CUSIP" means the Committee on Uniform Securities Identification
Procedures.

         "days" mean calendar days.

         "Debt" means any obligation created or assumed by any Person for the
repayment of money borrowed and any purchase money obligation created or assumed
by such Person and any guarantee of the foregoing.

                                       3
<PAGE>

         "Default" means any event, act or condition that is, or after notice or
the passage of time or both would be, an Event of Default.

         "Defaulted Interest" has the meaning specified in Section 307.

         "Defeasance" has the meaning specified in Section 1302.

         "Defeasible Series" has the meaning specified in Section 1304.

         "Depositary" means, with respect to Securities of any series issuable
in whole or in part in the form of one or more Global Securities, a clearing
agency registered under the Exchange Act that is designated to act as depositary
for such Securities as contemplated by Section 301.

         "Dollar" or "$" means the coin or currency of the United States of
America, which at the time of payment is legal tender for the payment of public
and private debts.

         "Event of Default" has the meaning specified in Section 501.

         "Exchange Act" means the Securities Exchange Act of 1934, as amended
from time to time, and any successor statute thereto.

         "Exchange Securities" has the meaning specified in Section 1201.

         "Floating or Adjustable Rate Provision" means a formula or provision,
specified in or pursuant to a Board Resolution or an indenture supplemental
hereto, providing for the determination, whether pursuant to objective factors
or pursuant to the sole discretion of any Person (including the Company), and
periodic adjustment of the interest rate borne by a Floating or Adjustable Rate
Security.

         "Floating or Adjustable Rate Security" means any Security which
provides for interest thereon at a periodic rate that may vary from time to time
over the term thereof in accordance with a Floating or Adjustable Rate
Provision.

         "Foreign Currency" means a currency used by the government of a country
other than the United States of America.

         "Foreign Entities" has the meaning specified in Section 113.

         "Global Security" means a Security that evidences all or part of the
Securities of any series and is authenticated and delivered to, and registered
in the name of, the Depositary for such Securities or a nominee thereof.

         "Guarantee" means the guarantee by any Guarantor of the obligations
under this Indenture.

                                       4
<PAGE>

         "Guarantor" means each of the U.S. Guarantor and any other Person to
the extent that any of such Persons have guaranteed any of the Securities
pursuant to Section 301 and Article Sixteen.

         "Holder" means a Person in whose name a Security is registered in the
Security Register.

         "Indenture" means this instrument as originally executed or as it may
from time to time be supplemented or amended by one or more indentures
supplemental hereto entered into pursuant to the applicable provisions hereof,
including, for all purposes of this instrument, and any such supplemental
indenture, the provisions of the Trust Indenture Act that are deemed to be a
part of and govern this instrument and any such supplemental indenture,
respectively. The term "Indenture" shall also include the terms of particular
series of Securities established as contemplated by Section 301.

         "interest," when used with respect to an Original Issue Discount
Security which by its terms bears interest only after Maturity, means interest
payable after Maturity.

         "Interest Payment Date," when used with respect to any Security, means
the Stated Maturity of an installment of interest on such Security.

         "Issuing Company" has the meaning specified in Section 1209.

         "Judgment Currency" has the meaning specified in Section 116.

         "Maturity," when used with respect to any Security, means the date on
which the principal of such Security or an installment of principal becomes due
and payable as therein or herein provided, whether at the Stated Maturity or by
declaration of acceleration, call for redemption or otherwise.

         "Market Exchange Rate" has the meaning specified in Section 115.

         "Notice of Default" means a written notice of the kind specified in
Section 501(4).

         "Officers' Certificate" means a certificate signed by (i) any two of
the following individuals: the Chairman, a Vice Chairman, the President or a
Vice President, or (ii) by one of the foregoing individuals and by any other
Vice President, the Treasurer, an Assistant Treasurer, the Controller, an
Assistant Controller, the Corporate Secretary or an Assistant Corporate
Secretary, of the Company or any Guarantor, as applicable, or any other
individual authorized by the Board of Directors for such purpose (as specified
in a Board Resolution), and delivered to the Trustee.

         "Opinion of Counsel" means a written opinion of counsel, who may be an
employee of or counsel to the Company or any Guarantor, as applicable.

                                       5
<PAGE>

         "Original Issue Discount Security" means any Security which provides
for an amount less than the principal amount thereof to be due and payable upon
a declaration of acceleration of the maturity thereof pursuant to Section 502.

         "Outstanding," when used with respect to Securities, means, as of the
date of determination, all Securities theretofore authenticated and delivered
under this Indenture, except:

                  (i) Securities theretofore canceled by the Trustee or
         delivered to the Trustee for cancellation;

                  (ii) Securities for whose payment or redemption money in the
         necessary amount has been theretofore deposited with the Trustee or any
         Paying Agent (other than the Company) in trust or set aside and
         segregated in trust by the Company (if the Company shall act as its own
         Paying Agent) for the Holders of such Securities; provided that, if
         such Securities are to be redeemed, notice of such redemption has been
         duly given pursuant to this Indenture or provision therefor
         satisfactory to the Trustee has been made;

                  (iii) Securities as to which Defeasance has been effected
         pursuant to Section 1302; and

                  (iv) Securities which have been paid pursuant to Section 306
         or in exchange for or in lieu of which other Securities have been
         authenticated and delivered pursuant to this Indenture, other than any
         such Securities in respect of which there shall have been presented to
         the Trustee proof satisfactory to it that such Securities are held by a
         bona fide purchaser in whose hands such Securities are valid
         obligations of the Company;

provided, however, that in determining whether the Holders of the requisite
principal amount of the Outstanding Securities have given any request, demand,
authorization, direction, notice, consent or waiver hereunder, (A) the principal
amount of an Original Issue Discount Security that shall be deemed to be
Outstanding shall be the amount of the principal thereof that would be due and
payable as of the date of such determination upon acceleration of the Maturity
thereof pursuant to Section 502, and (B) Securities owned by (i) the Company or
any other obligor upon the Securities or (ii) any Subsidiary or of such other
obligor upon the Securities shall be disregarded and deemed not to be
Outstanding, except that, in determining whether the Trustee shall be protected
in relying upon any such request, demand, authorization, direction, notice,
consent or waiver, only Securities which a Responsible Officer of the Trustee
knows to be so owned shall be so disregarded. Securities so owned which have
been pledged in good faith may be regarded as Outstanding if the pledgee
establishes to the satisfaction of the Trustee the pledgee's right so to act
with respect to such Securities and that the pledgee is not the Company or any
other obligor upon the Securities or any Subsidiary or of such other obligor.

         "Paying Agent" means any Person authorized by the Company to pay the
principal of or any premium or interest on any Securities on behalf of the
Company.

         "Payment Blockage Notice" has the meaning specified in Section 1701.

                                       6
<PAGE>

         "Payment Blockage Period" has the meaning specified in Section 1701.

         "Person" means any individual, corporation, limited liability company,
partnership, joint venture, trust, unincorporated organization or government or
any agency or political subdivision thereof.

         "PIK Securities" means any series of Securities where interest is
payable, at the election of the Company or a holder of such Security, in
additional Securities.

         "Place of Payment," when used with respect to the Securities of any
series, means the place or places where the principal of and any premium and
interest on the Securities of that series are payable as specified as
contemplated by Section 301.

         "Predecessor Security" of any particular Security means every previous
Security evidencing all or a portion of the same debt as that evidenced by such
particular Security; and, for the purposes of this definition, any Security
authenticated and delivered under Section 306 in exchange for or in lieu of a
mutilated, destroyed, lost or stolen Security shall be deemed to evidence the
same debt as the mutilated, destroyed, lost or stolen Security.

         "Redemption Date," when used with respect to any Security to be
redeemed, means the date fixed for such redemption by or pursuant to this
Indenture.

         "Redemption Price," when used with respect to any Security to be
redeemed, means the price at which it is to be redeemed pursuant to this
Indenture.

         "Regular Record Date" for the interest payable on any Interest Payment
Date on the Securities of any series means the date specified for that purpose
as contemplated by Section 301.

         "Required Currency" has the meaning specified in Section 116.

         "Responsible Officer," when used with respect to the Trustee, means any
officer of the Trustee with responsibility for the administration of this
Indenture, and also means, with respect to a particular corporate trust matter,
any other officer to whom such matter is referred because of his or her
knowledge of and familiarity with the particular subject.

         "Securities" has the meaning stated in the first recital of this
Indenture and more particularly means any Securities authenticated and delivered
under this Indenture.

         "Security Register" and "Security Registrar" have the respective
meanings specified in Section 305.

         "Senior Debt" means (1) all Debt of the Company, whether currently
outstanding or hereafter issued, unless, by the terms of the instrument creating
or evidencing such Debt, it is provided that such Debt is not superior in right
of payment to the Securities, and (2) any modifications, refunding, deferrals,
renewals or extensions of any such Debt or securities, notes

                                       7
<PAGE>

or other evidence of Debt issued in exchange for such Debt; provided that in no
event shall "Senior Debt" include (a) Debt of the Company owed or owing to any
Subsidiary of the Company or any officer, director or employee of the Company or
any Subsidiary of the Company, (b) Debt to trade creditors or (c) any liability
for taxes owned or owing by the Company.

         "Senior Nonmonetary Default" has the meaning specified in Section 1701.

         "Special Record Date" for the payment of any Defaulted Interest means a
date fixed by the Trustee pursuant to Section 307.

         "Stated Maturity," when used with respect to any Security or any
installment of principal thereof or interest thereon, means the date specified
in such Security as the fixed date on which the principal of such Security or
such installment of principal or interest is due and payable.

         "Subsidiary" means a corporation more than 50% of the voting power of
which is controlled, directly or indirectly, by any Guarantor or the Company, as
applicable, or by one or more other Subsidiaries, or by any Guarantor or the
Company, as applicable, and one or more other Subsidiaries. For the purposes of
this definition, "voting power" means the power to vote for the election of
directors, whether at all times or only so long as no senior class of stock has
such voting power by reason of any contingency.

         "trading day" has the meaning specified in Section 1203.

         "Trustee" means the Person named as the "Trustee" in the first
paragraph of this instrument until a successor Trustee shall have become such
pursuant to the applicable provisions of this Indenture, and thereafter
"Trustee" shall mean or include each Person who is then a Trustee hereunder; if
at any time there is more than one such Person, "Trustee" as used with respect
to the Securities of any series shall mean the Trustee with respect to
Securities of that series.

         "Trust Indenture Act" means the Trust Indenture Act of 1939, as amended
and as in force at the date as of which this instrument was executed; provided,
however, that in the event the Trust Indenture Act of 1939 is amended after such
date, "Trust Indenture Act" means, to the extent required by any such amendment,
the Trust Indenture Act of 1939 as so amended, and except as provided in Section
906.

         "U.S. Government Obligation" has the meaning specified in Section 1304.

         "U.S. Guarantor" means the Person named as the "U.S. Guarantor" in the
first paragraph of this instrument until a successor Person shall have become
such pursuant to the applicable provisions of this Indenture, and thereafter
"U.S. Guarantor" shall mean such successor Person.

         "Vice President," when used with respect to the Company or the Trustee,
means any vice president, whether or not designated by a number or a word or
words added before or after the title "vice president."

                                       8
<PAGE>

         SECTION 102. INCORPORATION BY REFERENCE OF TRUST INDENTURE ACT.

         Whenever this Indenture refers to a provision of the Trust Indenture
Act, such provision is incorporated by reference in and made a part of this
Indenture. The following Trust Indenture Act terms used in this Indenture have
the following meanings:

                  "commission" means the Commission.

                  "indenture securities" means the Securities.

                  "indenture security holder" means a Holder.

                  "indenture to be qualified" means this Indenture.

                  "indenture trustee" or "institutional trustee" means the
         Trustee.

                  "obligor" on the indenture security means the Company, any
         Guarantor (if applicable) or any other obligor on the indenture
         securities.

         All other terms used in this Indenture, and not otherwise defined
herein, that are defined by the Trust Indenture Act, defined by a Trust
Indenture Act reference to another statute or defined by a Commission rule under
the Trust Indenture Act have the meaning so assigned to them.

         SECTION 103. COMPLIANCE CERTIFICATES AND OPINIONS.

         Upon any application or request by the Company or any Guarantor to the
Trustee to take any action under any provision of this Indenture, the Company or
any Guarantor, as the case may be, shall furnish to the Trustee such
certificates and opinions as may be required under the Trust Indenture Act. Each
such certificate or opinion shall be given in the form of an Officers'
Certificate, if to be given by an officer of the Company or any Guarantor, or an
Opinion of Counsel, if to be given by counsel, and shall comply with the
requirements of the Trust Indenture Act and any other requirements set forth in
this Indenture.

         Every certificate or opinion with respect to compliance with a
condition or covenant provided for in this Indenture (excluding certificates
provided for in Section 1004 and opinions of counsel given in connection with
the authentication of a security) shall include

                  (1) a statement that each Person signing such certificate or
         opinion has read such covenant or condition and the definitions herein
         relating thereto;

                  (2) a brief statement as to the nature and scope of the
         examination or investigation upon which the statements or opinions
         contained in such certificate or opinion are based;

                                       9
<PAGE>

                  (3) a statement that, in the opinion of each such Person, such
         Person has made such examination or investigation as is necessary to
         enable such Person to express an informed opinion as to whether or not
         such covenant or condition has been complied with; and

                  (4) a statement as to whether, in the opinion of each such
         Person, such condition or covenant has been complied with.

         SECTION 104. FORM OF DOCUMENTS DELIVERED TO TRUSTEE.

         In any case where several matters are required to be certified by, or
covered by an opinion of, any specified Person, it is not necessary that all
such matters be certified by, or covered by the opinion of, only one such
Person, or that they be so certified or covered by only one document, but one
such Person may certify or give an opinion with respect to some matters and one
or more other such Persons as to other matters, and any such Person may certify
or give an opinion as to such matters in one or several documents.

         Any certificate or opinion of an officer of the Company or any
Guarantor may be based, insofar as it relates to legal matters, upon a
certificate or opinion of, or representations by, counsel, unless such officer
knows, or in the exercise of reasonable care should know, that the certificate
or opinion or representations with respect to the matters upon which its
certificate or opinion is based are erroneous. Any such certificate or opinion
of counsel may be based, insofar as it relates to factual matters, upon a
certificate or opinion of, or representations by, an officer or officers of the
Company or any Guarantor, as the case may be, stating that the information with
respect to such factual matters is in the possession of the Company or any
Guarantor, as the case may be, unless such counsel knows, or in the exercise of
reasonable care should know, that the certificate or opinion or representations
with respect to such matters are erroneous.

         Any certificate, statement or opinion of an officer of the Company or
any Guarantor, as the case may be, or of counsel may be based, insofar as it
relates to accounting matters, upon a certificate, opinion or representation by
an accountant or firm of accountants in the employ of the Company or any
Guarantor, as the case may be, unless such officer or counsel, as the case may
be, knows, or in the exercise of reasonable care should know, that the
certificate, opinion or representation with respect to such accounting matters
upon which its certificate, statement or opinion may be based is erroneous.

         Where any Person is required to make, give or execute two or more
applications, requests, consents, certificates, statements, opinions or other
instruments under this Indenture, they may, but need not, be consolidated and
form one instrument.

         SECTION 105. ACTS OF HOLDERS; RECORD DATES.

         (a) Any request, demand, authorization, direction, notice, consent,
waiver or other action provided or permitted by this Indenture to be given or
taken by Holders may be embodied in and evidenced by one or more instruments of
substantially similar tenor signed by such Holders in person or by agent duly
appointed in writing; and, except as herein otherwise expressly provided,

                                       10
<PAGE>

such action shall become effective when such instrument or instruments are
delivered to the Trustee and, where it is hereby expressly required, to the
Company or any Guarantor. Such instrument or instruments (and the action
embodied therein and evidenced thereby) are herein sometimes referred to as the
"Act" of the Holders signing such instrument or instruments. Proof of execution
of any such instrument or of a writing appointing any such agent shall be
sufficient for any purpose of this Indenture and (subject to Section 601)
conclusive in favor of the Trustee, the Company and any Guarantor (if
applicable), if made in the manner provided in this Section.

         (b) The fact and date of the execution by any Person of any such
instrument or writing may be proved by the affidavit of a witness of such
execution or by a certificate of a notary public or other officer authorized by
law to take acknowledgments of deeds, certifying that the individual signing
such instrument or writing acknowledged to him or her the execution thereof.
Where such execution is by a signer acting in a capacity other than such
signer's individual capacity, such certificate or affidavit shall also
constitute sufficient proof of such signer's authority. The fact and date of the
execution of any such instrument or writing, or the authority of the Person
executing the same, may also be proved in any other manner which the Trustee
deems sufficient.

         (c) The Company and, as applicable, any Guarantor may, in the
circumstances permitted by the Trust Indenture Act, fix any day as the record
date for the purpose of determining the Holders of Outstanding Securities of any
series entitled to give or take any request, demand, authorization, direction,
notice, consent, waiver or other action, or to vote on any action, authorized or
permitted to be given or taken by Holders of Outstanding Securities of such
series. If not set by the Company and, as applicable, any Guarantor, prior to
the first solicitation of a Holder of Securities of such series made by any
Person in respect of any such action, or, in the case of any such vote, prior to
such vote, the record date for any such action or vote shall be the 30th day
(or, if later, the date of the most recent list of Holders required to be
provided pursuant to Section 701) prior to such first solicitation or vote, as
the case may be. With regard to any record date for action to be taken by the
Holders of one or more series of Securities, only the Holders of Securities of
such series on such date (or their duly designated proxies) shall be entitled to
give or take, or vote on, the relevant action.

         (d) The ownership of Securities shall be proved by the Security
Register or by a certificate of the Security Registrar.

         (e) Any request, demand, authorization, direction, notice, consent,
waiver or other Act of the Holder of any Security shall bind every future Holder
of the same Security and the Holder of every Security issued upon the
registration of transfer thereof or in exchange therefor or in lieu thereof in
respect of anything done, omitted or suffered to be done by the Trustee or the
Company or any Guarantor (if applicable) in reliance thereon, whether or not
notation of such action is made upon such Security.

         (f) Without limiting the foregoing, a Holder entitled hereunder to give
or take any action hereunder with regard to any particular Security may do so
with regard to all or any part of the principal amount of such Security or by
one or more duly appointed agents each of which may

                                       11
<PAGE>

do so pursuant to such appointment with regard to all or any different part of
such principal amount.

         SECTION 106. NOTICES, ETC. TO TRUSTEE AND COMPANY.

         Any request, demand, authorization, direction, notice, consent, waiver
or Act of Holders or other document provided or permitted by this Indenture to
be made upon, given or furnished to, or filed with,

                  (1) the Trustee by any Holder, any Guarantor (if applicable)
         or by the Company shall be sufficient for every purpose hereunder if
         made, given, furnished or filed in writing to or with the Trustee at
         its Corporate Trust Office; provided, however, that the same shall be
         made, given, furnished or filed only when received by a Responsible
         Officer of the Trustee at its Corporate Trust Office, Attention:
         Corporate Trust Department, or

                  (2) the Company or any Guarantor (if applicable) by the
         Trustee, or by any Holder shall be sufficient for every purpose
         hereunder (unless otherwise herein expressly provided) if in writing
         and mailed, first-class postage prepaid, to the Company or any
         Guarantor, as applicable, addressed to it at the address of its
         principal office specified in the first paragraph of this instrument;
         provided, however, that the same shall be made, given, furnished or
         filed only when received by the Company, Attention: President, or any
         Guarantor, Attention: President, as applicable, or at any other address
         previously furnished in writing to the Trustee by the Company or any
         Guarantor, as applicable.

         SECTION 107. NOTICE TO HOLDERS; WAIVER.

         Where this Indenture provides for notice to Holders of any event, such
notice shall be sufficiently given (unless otherwise herein expressly provided)
if in writing and mailed, first-class postage prepaid, to each Holder affected
by such event, at its address as it appears in the Security Register, not later
than the latest date (if any), and not earlier than the earliest date (if any),
prescribed for the giving of such notice; provided, however, that the Company,
any Guarantor or the Trustee, upon a good faith determination that mailing is in
the circumstances impractical, may give such notice by any other method which,
in the reasonable belief of the Company or any Guarantor or, in the case of the
Trustee, of the Company or any Guarantor and the Trustee, is likely to be
received by the Holders. In any case where notice to Holders is given by mail,
neither the failure to mail such notice, nor any defect in any notice so mailed,
to any particular Holder shall affect the sufficiency of such notice with
respect to other Holders. Where this Indenture provides for notice in any
manner, such notice may be waived in writing by the Person entitled to receive
such notice, either before or after the event, and such waiver shall be the
equivalent of such notice. Waivers of notice by Holders shall be filed with the
Trustee, but such filing shall not be a condition precedent to the validity of
any action taken in reliance upon such waiver.

         In case by reason of the suspension of regular mail service or by
reason of any other cause it shall be impracticable to give such notice by mail,
then such notification as shall be

                                       12
<PAGE>

made with the approval of the Trustee shall constitute a sufficient notification
for every purpose hereunder.

         SECTION 108. CONFLICT WITH TRUST INDENTURE ACT.

         If any provision hereof limits, qualifies or conflicts with a provision
of the Trust Indenture Act that is required under such Act to be a part of and
govern this Indenture, the required provision shall control. If any provision of
this Indenture modifies or excludes any provision of the Trust Indenture Act
that may be so modified or excluded, the latter provision shall be deemed to
apply to this Indenture as so modified or to be excluded, as the case may be.

         SECTION 109. EFFECT OF HEADINGS AND TABLE OF CONTENTS.

         The Article and Section headings herein and the Table of Contents are
for convenience only and shall not affect the construction hereof.

         SECTION 110. SUCCESSORS AND ASSIGNS.

         All covenants and agreements in this Indenture by each of the Company
and any Guarantor shall bind its respective successors and assigns, whether so
expressed or not.

         SECTION 111. SEPARABILITY CLAUSE.

         In case any provision in this Indenture or in the Securities or the
Guarantee (if applicable) shall be invalid, illegal or unenforceable, the
validity, legality and enforceability of the remaining provisions shall not in
any way be affected or impaired thereby.

         SECTION 112. BENEFITS OF INDENTURE.

         Nothing in this Indenture or in the Securities or the Guarantee (if
applicable), express or implied, shall give to any Person, other than the
parties hereto and their successors hereunder, the holders of Senior Debt and
the Holders, any benefit or any legal or equitable right, remedy or claim under
this Indenture.

         SECTION 113. GOVERNING LAW, CONSENT TO JURISDICTION AND SERVICE OF
         PROCESS AND WAIVER OF IMMUNITY.

         THIS INDENTURE, THE SECURITIES AND THE GUARANTEE SHALL BE GOVERNED BY
AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK, BUT WITHOUT
REGARD TO PRINCIPLES OF CONFLICTS OF LAWS.

         Each of the Company and any Guarantor not organized under the laws of
the United States (including the states thereof and the District of Columbia)
("Foreign Entities") hereby appoints the U.S. Guarantor as the authorized agent
thereof (the "Authorized Agent") upon whom process may be served in any action,
suit or proceeding arising out of or based on this

                                       13
<PAGE>

Indenture or the Securities or the Guarantee which may be instituted in the
Supreme Court of the State of New York or the United States District Court for
the Southern District of New York, in either case in the Borough of Manhattan,
the City of New York, by the Holder of any Security, and to the fullest extent
permitted by applicable law, each of the Foreign Entities hereby waives any
objection which it may now or hereafter have to the laying of venue of any such
proceeding and expressly and irrevocably accepts and submits, for the benefit of
the Holders from time to time of the Securities of any series, to the
nonexclusive jurisdiction of any such court in respect of any such action, suit
or proceeding, for itself and with respect to its properties, revenues and
assets. Such appointment shall be irrevocable unless and until the appointment
of a successor authorized agent for such purpose, and such successor's
acceptance of such appointment, shall have occurred. Each of the Foreign
Entities agrees to take any and all actions, including the filing of any and all
documents and instruments, that may be necessary to continue such appointment in
full force and effect as aforesaid. Service of process upon the Authorized Agent
with respect to any such action shall be deemed, in every respect, effective
service of process upon the Foreign Entities, as the case may be.
Notwithstanding the foregoing, any action against any of the Foreign Entities
arising out of or based on this Indenture, any Security of any series or the
Guarantee may also be instituted by the Holder of such Security in any court in
the jurisdiction of organization of the respective Foreign Entities, as the case
may be, and each of the Foreign Entities expressly accepts the jurisdiction of
any such court in any such action. The U.S. Guarantor hereby accepts the
foregoing appointment as agent for service of process.

         To the extent that the Foreign Entities or any of their properties,
assets or revenues may have or may hereafter become entitled to, or have
attributed to it, any right of immunity, on the grounds of sovereignty or
otherwise, from any legal action, suit or proceeding, from the giving of any
relief in any thereof, from set-off or counterclaim, from the jurisdiction of
any court, from service of process, from attachment upon or prior to judgment,
from attachment in aid of execution of judgment, or from execution of judgment,
or other legal process or proceeding for the giving of any relief or for the
enforcement of any judgment, in any jurisdiction in which proceedings may at any
time be commenced, with respect to its obligations, liabilities or any other
matter arising out of or based on this Indenture or the Securities of any series
or the Guarantee, each of the Foreign Entities, to the maximum extent permitted
by law, hereby irrevocably and unconditionally waives, and agrees not to plead
or claim, any such immunity and consents to such relief and enforcement.

         SECTION 114. LEGAL HOLIDAYS.

         In any case where any Interest Payment Date, Redemption Date or Stated
Maturity of any Security or the last day on which a Holder has the right to
convert a Security at a particular conversion price shall not be a Business Day
at any Place of Payment, then (notwithstanding any other provision of this
Indenture or of the Securities or, if applicable, the Guarantee (other than a
provision of the Securities of any series or, if applicable, the Guarantee which
specifically states that such provision shall apply in lieu of this Section
114)) payment of interest, if any, or principal (and premium, if any) or
conversion need not be made at such Place of Payment on such date, but may be
made on the next succeeding Business Day at such Place of Payment with the same
force and effect as if made on the Interest Payment Date or Redemption Date, or
at the Stated Maturity, provided that no interest shall accrue with respect to
such payment for the

                                       14
<PAGE>

period from and after such Interest Payment Date, Redemption Date or Stated
Maturity, as the case may be.

         SECTION 115. SECURITIES IN A COMPOSITE CURRENCY, CURRENCY UNIT OR
         FOREIGN CURRENCY.

         Unless otherwise specified in an Officers' Certificate delivered
pursuant to Section 301 of this Indenture with respect to a particular series of
Securities, whenever for purposes of this Indenture any action may be taken by
the Holders of a specified percentage in aggregate principal amount of
Securities of all series or all series affected by a particular action at the
time Outstanding and, at such time, there are Outstanding Securities of any
series which are denominated in a coin, currency or currencies other than
Dollars (including, but not limited to, any composite currency, currency units
or Foreign Currency), then the principal amount of Securities of such series
which shall be deemed to be Outstanding for the purpose of taking such action
shall be that amount of Dollars that could be obtained for such amount at the
Market Exchange Rate. For purposes of this Section, the term "Market Exchange
Rate" shall mean the noon Dollar buying rate in The City of New York for cable
transfers of such currency or currencies as published by the Federal Reserve
Bank of New York, as of the most recent available date. If such Market Exchange
Rate is not so available for any reason with respect to such currency, the
Trustee shall use, in its sole discretion and without liability on its part,
such quotation of the Federal Reserve Bank of New York as of the most recent
available date, or quotations or rates of exchange from one or more major banks
in The City of New York or in the country of issue of the currency in question,
which for purposes of euros shall be Brussels, Belgium, or such other quotations
or rates of exchange as the Trustee shall deem appropriate. The provisions of
this paragraph shall apply in determining the equivalent principal amount in
respect of Securities of a series denominated in a currency other than Dollars
in connection with any action taken by Holders of Securities pursuant to the
terms of this Indenture.

              All decisions and determinations of the Trustee regarding the
Market Exchange Rate or any alternative determination provided for in the
preceding paragraph shall be in its sole discretion and shall, in the absence of
manifest error, be conclusive to the extent permitted by law for all purposes
and irrevocably binding upon the Company and all Holders.

         SECTION 116. PAYMENT IN REQUIRED CURRENCY; JUDGMENT CURRENCY.

         Each of the Company and any Guarantor agrees, to the fullest extent
that it may effectively do so under applicable law, that (a) if for the purpose
of obtaining judgment in any court it is necessary to convert the sum due in
respect of the principal of or interest on the Securities of any series (the
"Required Currency") into a currency in which a judgment will be rendered (the
"Judgment Currency"), the rate of exchange used shall be the rate at which in
accordance with normal banking procedures the Trustee could purchase in The City
of New York the Required Currency with the Judgment Currency on the day on which
final unappealable judgment is entered, unless such day is not a Banking Day,
then, to the extent permitted by applicable law, the rate of exchange used shall
be the rate at which in accordance with normal banking procedures the Trustee
could purchase in The City of New York the Required Currency with the Judgment
Currency on the Banking Day next preceding the day on which final

                                       15
<PAGE>

unappealable judgment is entered and (b) its obligations under this Indenture to
make payments in the Required Currency (i) shall not be discharged or satisfied
by any tender, or any recovery pursuant to any judgment (whether or not entered
in accordance with subclause (a)), in any currency other than the Required
Currency, except to the extent that such tender or recovery shall result in the
actual receipt, by the payee, of the full amount of the Required Currency
expressed to be payable in respect of such payments, (ii) shall be enforceable
as an alternative or additional cause of action for the purpose of recovering in
the Required Currency the amount, if any, by which such actual receipt shall
fall short of the full amount of the Required Currency so expressed to be
payable and (iii) shall not be affected by judgment being obtained for any other
sum due under this Indenture.

         SECTION 117. LANGUAGE OF NOTICES, ETC.

         Any request, demand, authorization, direction, notice, consent, waiver
or Act required or permitted under this Indenture shall be in the English
language, except that any published notice may be in an official language of the
country of publication.

         SECTION 118. PERSONAL IMMUNITY FROM LIABILITY FOR INCORPORATORS,
         STOCKHOLDERS, ETC.

         No recourse shall be had for the payment of the principal, premium, if
any, or interest, if any, on any Security or the Guarantee (if applicable), or
for any claim based thereon, or otherwise in respect of any Security or the
Guarantee (if applicable), or based on or in respect of this Indenture or any
indenture supplemental hereto, against any incorporator, or against any past,
present or future stockholder, director or officer, as such, of each of the
Company, any Guarantor or of any of their respective successor corporations,
whether by virtue of any constitution, statute or rule of law, or by the
enforcement of any assessment or penalty or otherwise, all such liability being
expressly waived and released as a condition of, and as consideration for, the
execution of this Indenture and the issue of the Securities.

                                   ARTICLE TWO

                                 SECURITY FORMS

         SECTION 201. FORMS GENERALLY.

         The Securities of each series and, if applicable, the notation thereon
relating to the Guarantee, shall be in substantially the form set forth in this
Article, or in such other form or forms as shall be established by or pursuant
to a Board Resolution or in one or more indentures supplemental hereto, in each
case with such appropriate insertions, omissions, substitutions and other
variations as are required or permitted by this Indenture, and may have such
letters, numbers or other marks of identification and such legends or
endorsements placed thereon as may be required to comply with the rules of any
securities exchange or Depositary therefor or as may, consistent herewith, be
determined by the officers executing such Securities and the Guarantee (if
applicable), as evidenced by their execution thereof. If the form of Securities
of any series is established by action taken pursuant to a Board Resolution, a
copy of an appropriate record of such action shall be certified by the Corporate
Secretary or an Assistant Corporate

                                       16
<PAGE>

Secretary of the Company and delivered to the Trustee at or prior to the
delivery of the Company Order contemplated by Section 303 for the authentication
and delivery of such Securities.

         The definitive Securities shall be printed, lithographed or engraved on
steel engraved borders or may be produced in any other manner, all as determined
by the officers executing such Securities, as evidenced by their execution of
such Securities.

         The forms of Global Securities of any series shall have such provisions
and legends as are customary for Securities of any series in global form,
including without limitation any legend required by the Depositary for the
Securities of such series.

         SECTION 202. FORM OF FACE OF SECURITY.

          [Insert any legend required by the Internal Revenue Code of 1986, as
amended and the regulations thereunder.]

         [If a Global Security,--insert legend required by Section 204 of the
Indenture] [If applicable, insert --UNLESS THIS SECURITY IS PRESENTED BY AN
AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK
CORPORATION, TO THE COMPANY OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE
OR PAYMENT, AND ANY SECURITY ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR
SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE
DEPOSITORY TRUST COMPANY (AND ANY PAYMENT IS MADE TO CEDE & CO. OR TO SUCH OTHER
ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST
COMPANY), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR
TO ANY PERSON IS WRONGFUL SINCE THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN
INTEREST HEREIN.]

                             NABORS INDUSTRIES LTD.

No.____  [$]____

         NABORS INDUSTRIES LTD., a Bermuda exempted company (herein called the
"Company," which term includes any successor Person under the Indenture
hereinafter referred to), for value received, hereby promises to pay to
________________________, or registered assigns, the principal sum of
[$]______________ [__________ Dollars] [if applicable insert one or more Foreign
Currencies, currency units or composite currencies] [if the Security is to bear
interest prior to Maturity, insert -- and to pay interest thereon from _________
or from the most recent interest Payment Date to which interest has been paid or
duly provided for, [semi-annually on __________ and __________ in each year] [if
other than semi-annual payments, insert frequency of payments and payment
dates], commencing ________________, at [if the Security is to bear interest at
a fixed rate, insert -- the rate of ______% per annum][if the Security is a
Floating or Adjustable Rate Security, insert -- a rate per annum
[computed-determined] in accordance with the [insert defined name of Floating or
Adjustable Rate Provision] set forth below], [if the Security is to bear
interest at a rate determined with reference to an index, refer to

                                       17
<PAGE>

description of index below] until the principal hereof is paid or made available
for payment [if applicable, insert -- and (to the extent that the payment of
such interest shall be legally enforceable) at the rate of ____% per annum on
any overdue principal and premium and on any overdue installment of interest].
The interest so payable, and punctually paid or duly provided for, on any
Interest Payment Date will, as provided in such Indenture, be paid to the Person
in whose name this Security (or one or more Predecessor Securities) is
registered at the close of business on the Regular Record Date for such
interest, which shall be the ___________ or ____________ (whether or not a
Business Day), as the case may be, next preceding such Interest Payment Date.
Any such interest not so punctually paid or duly provided for will forthwith
cease to be payable to the Holder on such Regular Record Date and may either be
paid to the Person in whose name this Security (or one or more Predecessor
Securities) is registered at the close of business on a Special Record Date for
the payment of such Defaulted Interest to be fixed by the Trustee, notice
whereof shall be given to Holders of Securities of this series not less than 10
days prior to such Special Record Date, or be paid at any time in any other
lawful manner not inconsistent with the requirements of any securities exchange
on which the Securities of this series may be listed, and upon such notice as
may be required by such exchange, all as more fully provided in said Indenture).

         [If the Securities are Floating or Adjustable Rate Securities with
respect to which the principal, premium, if any, or interest may be determined
with reference to an index, insert the text of the Floating or Adjustable Rate
Provision.]

         [If the Security is not to bear interest prior to Maturity, insert --
The principal of this Security shall not bear interest except in the case of a
default in payment of principal upon acceleration, upon redemption or at Stated
Maturity and in such case the overdue principal of this Security shall bear
interest at the rate of __% per annum (to the extent that the payment of such
interest shall be legally enforceable), which shall accrue from the date of such
default in payment to the date payment of such principal has been made or duly
provided for. Interest on any overdue principal shall be payable on demand. Any
such interest on any overdue principal that is not so paid on demand shall bear
interest at the rate of ______% per annum (to the extent that the payment of
such interest shall be legally enforceable), which shall accrue from the date of
such demand for payment to the date payment of such interest has been made or
duly provided for, and such interest shall also be payable on demand.]

         [If a Global Security, insert--Payment of the principal of (and
premium, if any) and [if applicable, insert--any such] interest on this Security
will be made by transfer of immediately available funds to a bank account in
___________ designated by the Holder in such coin or currency of the United
States of America as at the time of payment is legal tender for payment of
public and private debts [state other currency].]

         [If a Definitive Security, insert--Payment of the principal of (and
premium, if any) and [if applicable, insert--any such] interest on this Security
will be made at the office or agency of the Company maintained for that purpose
in _______________, in such coin or currency of the United States of America as
at the time of payment is legal tender for payment of public and private debts]
[state other currency] [or subject to any laws or regulations applicable thereto
and to the right of the Company (as provided in the Indenture) to rescind the
designation of any such

                                       18
<PAGE>

Paying Agent, at the [main] offices of ________________ in _____________, or at
such other offices or agencies as the Company may designate, by [United States
Dollar] [state other currency] check drawn on, or transfer to a [United States
Dollar] account maintained by the payee with, a bank in The City of New York (so
long as the applicable Paying Agency has received proper transfer instructions
in writing at least ___ days prior to the payment date)] [if applicable,
insert--; provided, however, that payment of interest may be made at the option
of the Company by [United States Dollar] [state other currency] check mailed to
the addresses of the Persons entitled thereto as such addresses shall appear in
the Security Register] [or by transfer to a [United States Dollar] [state other
currency] account maintained by the payee with a bank in The City of New York
[state other place of payment] (so long as the applicable Paying Agent has
received proper transfer instructions in writing by the record date prior to the
applicable interest payment date)].]

         Reference is hereby made to the further provisions of this Security set
forth on the reverse hereof, which further provisions shall for all purposes
have the same effect as if set forth at this place.

         Unless the certificate of authentication hereon has been executed by
the Trustee referred to on the reverse hereof by manual signature, this Security
shall not be entitled to any benefit under the Indenture or be valid or
obligatory for any purpose.

         IN WITNESS WHEREOF, the Company has caused this instrument to be duly
executed.

Dated:

                             NABORS INDUSTRIES LTD.

                             By:
                                ----------------------------
                             Attest:
                                    ------------------------

         SECTION 203. FORM OF REVERSE OF SECURITY.

         This Security is one of a duly authorized issue of subordinated
securities of the Company (herein called the "Securities"), issued and to be
issued in one or more series under an Indenture, dated as of _______________
(herein called the "Indenture"), among the Company, any Guarantor and
________________, as Trustee (herein called the "Trustee," which term includes
any successor trustee under the Indenture), to which Indenture and all
indentures supplemental thereto reference is hereby made for a statement of the
respective rights, limitations of rights, duties and immunities thereunder of
the Company, any Guarantor, the Trustee and the Holders of the Securities and of
the terms upon which the Securities are, and are to be, authenticated and
delivered. As provided in the Indenture, the Securities may be issued in one or
more series, which different series may be issued in various aggregate principal
amounts, may mature at different times, may bear interest, if any, at different
rates, may be subject to different redemption provisions, if any, may be subject
to different sinking, purchase or analogous funds, if any, may be subject to
different covenants and Events of Default and may otherwise vary as in the
Indenture provided or permitted. This Security is one of the series designated
on the face

                                       19
<PAGE>

hereof [, limited in aggregate principal amount to [[$]___________][if
applicable, insert -- relevant amount in applicable Foreign Currency, currency
unit or composite currency]].

         This security is the general, unsecured, subordinated obligation of the
Company [if applicable, insert--and is guaranteed pursuant to a guarantee (the
"Guarantee") by _____________ (the "Guarantor[(s)]"). The Guarantee is the
general, unsecured, subordinated obligation of any such Guarantor.]

         [If applicable, insert -- The Securities of this series are subject to
redemption upon not less than 30 days' nor more than 60 days' notice by mail,
[if applicable, insert -- (1) on __________ in any year commencing with the year
____ and ending with the year ____ through operation of the sinking fund for
this series at a Redemption Price equal to 100% of the principal amount, and
(2)] at any time [on or after ________________], as a whole or in part, at the
election of the Company, at the following Redemption Prices (expressed as
percentages of the principal amount): If redeemed [on or before _________, ___%
and if redeemed] during the 12-month period beginning of the years indicated,

<Table>
<Caption>
                           Redemption                                           Redemption
Year                       Price                     Year                       Price
----------                 ---------------           ----------                 ---------------
<S>                        <C>                       <C>                        <C>
</Table>

and thereafter at a Redemption Price equal to __________% of the principal
amount, together in the case of any such redemption [if applicable, insert
--(whether through operation of the sinking fund or otherwise)] with accrued
interest to the Redemption Date, but interest installments whose Stated Maturity
is on or prior to such Redemption Date will be payable to the Holders of such
Securities, or one or more Predecessor Securities, of record at the close of
business on the relevant Record Dates referred to on the face hereof, all as
provided in the Indenture.]

         [If applicable, insert -- The Securities of this series are subject to
redemption upon not less than 30 days' nor more than 60 days' notice by mail,
(1) on ________ in any year commencing with the year __________ and ending with
the year __________ through operation of the sinking fund for this series at the
Redemption Prices for redemption through operation of the sinking fund
(expressed as percentages of the principal amount) set forth in the table below,
and (2) at any time [on or after _________], as a whole or in part, at the
election of the Company, at the Redemption Prices for redemption otherwise than
through operation of the sinking fund (expressed as percentages of the principal
amount) set forth in the table below: If redeemed during the 12-month period
beginning __________ of the years indicated,

<Table>
<Caption>
                                                        Redemption Price For
                  Redemption Price For                  Redemption Otherwise
                  Redemption Through Operation          Than Through Operation
Year              of the Sinking Fund                   of the Sinking Fund
----              ------------------------              ------------------------
<S>               <C>                                   <C>
</Table>

                                       20
<PAGE>

         and thereafter at a Redemption Price equal to ____% of the principal
amount, together in the case of any such redemption (whether through operation
of the sinking fund or otherwise) with accrued interest to the Redemption Date,
but interest installments whose Stated Maturity in on or prior to such
Redemption Date will be payable to the Holders of such Securities, or one or
more Predecessor Securities, of record at the close of business on the relevant
Record Dates referred to on the face hereof, all as provided in the Indenture.]

         [Notwithstanding the foregoing, the Company may not, prior to
___________________, redeem any Securities of this series as contemplated by
[Clause (2) of] the preceding paragraph as a part of, or in anticipation of, any
refunding operation by the application, directly or indirectly, of moneys
borrowed having an interest cost to the Company (calculated in accordance with
generally accepted financial practice) of less than _______% per annum.]

         [The sinking fund for this series provides for the redemption on
__________ in each year beginning with the year _____ and ending with the year
____ of [not less than [$]__________ ("mandatory sinking fund") and not more
than] [$]__________ aggregate principal amount of Securities of this series.
Securities of this series acquired or redeemed by the Company otherwise than
through [mandatory] sinking fund payments may be credited against subsequent
[mandatory] sinking fund payments otherwise required to be made [in the inverse
order in which they become due).]

         [If the Security is subject to redemption, insert -- In the event of
redemption of this Security in part only, a new Security or Securities of this
series and of like tenor for the unredeemed portion hereof will be issued in the
name of the Holder hereof upon the cancellation hereof.]

         The Indenture contains provisions for defeasance at any time of (1) the
entire indebtedness of this Security or (2) certain restrictive covenants and
Events of Default with respect to this Security, in each case upon compliance
with certain conditions set forth in the Indenture.

         [If the Security is convertible into other securities or property,
specify the conversion features and the form of conversion notice pursuant to
Section 206 hereof.]

         [If the Security is not an Original Issue Discount Security, insert --
If an Event of Default with respect to Securities of this series shall occur and
be continuing, the principal of the Securities of this series may be declared
due and payable in the manner and with the effect provided in the Indenture.]

         [If the Security is an Original Issue Discount Security, insert -- If
an Event of Default with respect to Securities of this series shall occur and be
continuing, an amount of principal of the Securities of this series may be
declared due and payable in the manner and with the effect provided in the
Indenture. Such amount shall be equal to [Insert formula for determining the

                                       21
<PAGE>

amount]. Upon payment (i) of the amount of principal so declared due and payable
and (ii) of interest on any overdue principal and overdue interest (in each case
to the extent that the payment of such interest shall be legally enforceable),
all of the Company's obligations in respect of the payment of the principal of
and interest, if any, on the Securities of this series shall terminate.]

         The Indenture permits, with certain exceptions as therein provided, the
amendment thereof and the modification of the rights and obligations of the
Company [If applicable, insert - any Guarantor] and the rights of the Holders of
the Securities of each series to be affected under the Indenture at any time by
the Company [If applicable, insert - any Guarantor] and the Trustee with the
consent of the Holders of a majority in principal amount of the Securities at
the time outstanding of each series to be affected.

         The Indenture contains provisions permitting the Holders of specified
percentages in principal amount of the Securities of each series at the time
Outstanding, on behalf of the Holders of all Securities of such series, to waive
compliance by the Company [If applicable, insert - any Guarantor] with certain
provisions of the Indenture and certain past defaults under the Indenture and
their consequences. Any such consent or waiver by the Holder of this Security
shall be conclusive and binding upon such Holder and upon all future Holders of
this Security and of any Security issued upon the registration of transfer
hereof or in exchange hereof or in lieu hereof, whether or not notation of such
consent or waiver is made upon this Security.

         No reference herein to the Indenture and no provision of this Security
or of the Indenture shall alter or impair the obligation of the Company, which
is absolute and unconditional, to pay the principal, premium, if any, and
interest on this Security at the times, place and [rate(s)], and in the coin or
currency, herein prescribed.

         [If a Global Security, insert--This Global Security or portion hereof
may not be exchanged for definitive Securities of this series except in the
limited circumstances provided in the Indenture. The holders of beneficial
interests in this Global Security will not be entitled to receive physical
delivery of definitive Securities except as described in the Indenture and will
not be considered the Holders thereof for any purpose under the Indenture.]

         As provided in the Indenture and subject to certain limitations therein
set forth, the transfer of this Security is registerable in the Security
Register, upon surrender of this Security for registration of transfer at the
office or agency of the Company in any place where the principal, premium, if
any, and interest on this Security are payable, [if applicable, insert--The City
of New York [, or, subject to any laws or regulations applicable thereto and to
the right of the Company (limited as provided in the Indenture) to rescind the
designation of any such transfer agent, at the [main] offices of _______________
in ________________ or at such other offices or agencies as the Company may
designate]] duly endorsed by, or accompanied by a written instrument of transfer
in form satisfactory to the Company and the Security Registrar duly executed by,
the Holder hereof or his attorney duly authorized in writing, and thereupon one
or more new Securities of this series and of like tenor, of authorized
denominations and for the same aggregate principal amount, will be issued to the
designated transferee or transferees.

                                       22
<PAGE>

         The Securities of this series are issuable only in registered form
without coupons in denominations of $1,000 and any integral multiple thereof [if
applicable, insert the equivalent thereof in one or more Foreign Currencies,
currency units or composite currencies]. As provided in the Indenture and
subject to certain limitations therein set forth, Securities of this series are
exchangeable for a like aggregate principal amount of Securities of this series
and of like tenor of a different authorized denomination, as requested by the
Holder surrendering the same.

         No service charge shall be made for any such registration of transfer
or exchange, but the Company may require payment of a sum sufficient to cover
any tax or other governmental charge payable in connection therewith.

         Prior to due presentment of this Security for registration of transfer,
the Company, [if applicable, insert - any Guarantor,] the Trustee and any agent
of the Company [if applicable, insert - any Guarantor,] or the Trustee may treat
the Person in whose name this Security is registered as the owner hereof for all
purposes, whether or not this Security is overdue, and none of the Company, [if
applicable, insert - any Guarantor,] the Trustee nor any such agent shall be
affected by notice to the contrary.

         This Security is subordinated in right of payment to Senior Debt [If
applicable, insert--and the Guarantee is subordinated in right of payment to the
guarantor's senior debt], to the extent and in the manner provided in the
Indenture.

         No recourse under or upon any obligation, covenant or agreement of or
contained in the Indenture or of or contained in any Security, [If applicable,
insert--, or the Guarantee endorsed thereon,] or for any claim based thereon or
otherwise in respect thereof, or in any Security [If applicable, insert--or in
the Guarantee], or because of the creation of any indebtedness represented
thereby, shall be had against any incorporator, shareholder, member, officer,
manager or director, as such, past, present or future, of the Company [If
applicable, insert--or any Guarantor] or of any successor Person, either
directly or through the Company [If applicable, insert--or any Guarantor] or any
successor Person, whether by virtue of any constitution, statute or rule of law,
or by the enforcement of any assessment, penalty or otherwise; it being
expressly understood that all such liability is hereby expressly waived and
released by the acceptance hereof and as a condition of, and as part of the
consideration for, the Securities and the execution of the Indenture.

         The Indenture provides that the Company [If applicable, insert--and any
Guarantor] (a) will be discharged from any and all obligations in respect of the
Securities (except for certain obligations described in the Indenture), or (b)
need not comply with certain restrictive covenants of the Indenture, in each
case if the Company [If applicable, insert--or any Guarantor] deposits, in
trust, with the Trustee money or U.S. Government Obligations (or a combination
thereof) which through the payment of interest thereon and principal thereof in
accordance with their terms will provide money, in an amount sufficient to pay
all the principal of and interest on the Securities, but such money need not be
segregated from other funds except to the extent required by law.

                                       23
<PAGE>

         Except as otherwise defined herein, all terms used in this Security
which are defined in the Indenture shall have the meanings assigned to them in
the Indenture.

         [If a Definitive Security, insert as a separate page--

         FOR VALUE RECEIVED, the undersigned hereby sell(s), assign(s) and
transfer(s) unto _______________________(Please Print or Typewrite Name and
Address of Assignee) the within instrument of NABORS INDUSTRIES LTD. and does
hereby irrevocably constitute and appoint ___________________ Attorney to
transfer said instrument on the books of the within-named Company, with full
power of substitution in the premises.

Please Insert Social Security or Other Identifying Number of Assignee:

------------------------            -----------------------
Dated:
      ------------------            -----------------------
                                    (Signature)

NOTICE: The signature to this assignment must correspond with the name as
written upon the face of the within instrument in every particular, without
alteration or enlargement or any change whatever.]

         [If a Security to which Article Sixteen has been made applicable,
insert the following Form of Notation on such Security relating to the
Guarantee-- Each Guarantor (which term includes any successor Person in such
capacity under the Indenture), has fully, unconditionally and absolutely
guaranteed, to the extent set forth in the Indenture and subject to the
provisions in the Indenture, the due and punctual payment of the principal of,
and premium, if any, and interest, if any, on the Securities and all other
amounts due and payable under the Indenture and the Securities by the Company.

         The obligations of any Guarantor to the Holders of Securities and to
the Trustee pursuant to the Guarantee and the Indenture are expressly set forth
in Article Sixteen of the Indenture and reference is hereby made to the
Indenture for the precise terms of the Guarantee.

                                                [Guarantor(s):

                                                ---------------------------
                                                By:                        ]
                                                   ------------------------

         SECTION 204. FORM OF LEGEND FOR GLOBAL SECURITIES.

         Every Global Security authenticated and delivered hereunder shall bear
a legend in substantially the following form or such other legends as may be
required:

         This Security is a Global Security within the meaning of the Indenture
hereinafter referred to and is registered in the name of a Depositary or a
nominee thereof. This Security may not be transferred to, or registered or
exchanged for Securities registered in the name of, any

                                       24
<PAGE>

Person other than the Depositary or a nominee thereof and no such transfer may
be registered, except in the limited circumstances described in the Indenture.
Every Security authenticated and delivered upon registration of transfer of, or
in exchange for or in lieu of, this Security shall be a Global Security subject
to the foregoing, except in such limited circumstances.

         Section 205. Form of Trustee's Certificate of Authentication.

         The Trustee's certificate of authentication shall be in substantially
the following form:

         This is one of the Securities of the series designated therein referred
to in the within-mentioned Indenture.

                                                                       ,
                                                 ----------------------
                                                 as Trustee

                                                 By                    ,
                                                   --------------------
                                                 Authorized Signatory

         SECTION 206. FORM OF CONVERSION NOTICE.

         To Nabors Industries Ltd.:

         The undersigned owner of this Security hereby irrevocably exercises the
option to convert this Security, or portion hereof (which is $1,000 or an
integral multiple thereof) below designated, into shares of Exchange Securities
in accordance with the terms of the Indenture referred to in this Security, and
directs that the Exchange Securities issuable and deliverable upon the
conversion, together with any check in payment for fractional Exchange
Securities and any Securities representing any unconverted principal amount
hereof, be issued and delivered to the registered holder hereof unless a
different name has been indicated below. If this Notice is being delivered on a
date after the close of business on a Regular Record Date and prior to the
opening of business on the related Interest Payment Date (unless this Security
or the portion thereof being converted has been called for redemption on a
Redemption Date within such period), this Notice is accompanied by payment of an
amount equal to the interest payable on such Interest Payment Date of the
principal of this Security to be converted. If Exchange Securities are to be
issued in the name of a Person other than the undersigned, the undersigned will
pay all transfer taxes payable with respect hereto. Any amount required to be
paid by the undersigned on account of interest accompanies this Security.

Principal Amount to be Converted (in an integral multiple of $1,000, if less
than all [if applicable, insert the equivalent thereof in one or more Foreign
Currencies, currency units or composite currencies]):

[$]               Dated
   -----------         ---------------

                                        -----------------------
                                        Signature

                                       25
<PAGE>

                                        [If applicable, Signature(s) must be
                                        guaranteed by an institution which is a
                                        member of one of the following
                                        recognized signature Guarantee Programs:
                                        (i) The Securities Transfer Agent
                                        Medallion Program (STAMP); (ii) The New
                                        York Stock Exchange Medallion Program
                                        (MNSP); (iii) The Stock Exchange
                                        Medallion Program (SEMP); or (iv)
                                        another guarantee program acceptable to
                                        the Trustee.

                                        -----------------------------
                                        Signature Guarantee ]

         Fill in for registration of Exchange Securities and Security if to be
issued otherwise than to the registered holder.

                                        ---------------------
                                              (Name)

                                        ---------------------
                                              (Address)
                                        Please print Name and Address
                                        (including zip code)

Social Security or other Taxpayer Identifying Number:
                                                     ---------------

         Section 207. Securities Issuable in Global Form.

         If Securities of or within a series are issuable in global form, as
specified as contemplated by Section 301, then, notwithstanding clause (11) of
Section 301, any such Security shall represent such of the Outstanding
Securities of such series as shall be specified therein and may provide that it
shall represent the aggregate amount of Outstanding Securities of such series
from time to time endorsed thereon and that the aggregate amount of Outstanding
Securities of such series represented thereby may from time to time by increased
or decreased to reflect exchanges. Any endorsement of a Security in global form
to reflect the amount, or any increase or decrease in the amount, of Outstanding
Securities represented thereby shall be made by the Trustee in such manner and
upon instructions given by such Person or Persons as shall be specified therein
or in the Company Order to be delivered to the Trustee pursuant to Section 303
or Section 304. Subject to the provisions of Section 303 and, if applicable,
Section 304, the Trustee shall deliver and redeliver any Security in permanent
global form in the manner and upon instructions given by the Person or Persons
specified therein or in the applicable Company Order. If a Company Order
pursuant to Section 303 or Section 304 has been, or simultaneously is,
delivered, any instructions by the Company with respect to endorsement or
delivery or redelivery of a Security

                                       26
<PAGE>

in global form shall be in writing but need not comply with Section 103 and need
not be accompanied by an Opinion of Counsel.

         The provisions of the last sentence of Section 303 shall apply to any
Security represented by a Security in global form if such Security was never
issued and sold by the Company and the Company delivers to the Trustee the
Security in global form together with written instructions (which need not
comply with Section 103 and need not be accompanied by an Opinion of Counsel)
with regard to the reduction in the principal amount of Securities represented
thereby, together with the written statement contemplated by the last sentence
of Section 303.

         Notwithstanding the provisions of Section 307, unless otherwise
specified as contemplated by Section 301, payment of principal of and any
premium and interest on any Security in permanent global form shall be made to
the Person or Persons specified therein.

         Notwithstanding the provisions of Section 308 and except as provided in
the preceding paragraph, the Company, any Guarantor, the Trustee and any agent
of the Company, any Guarantor and the Trustee shall treat as the Holder of such
principal amount of Outstanding Securities represented by a permanent global
Security the Holder of such permanent global Security in registered form.

                                  ARTICLE THREE

                                 THE SECURITIES

         SECTION 301. AMOUNT UNLIMITED; ISSUABLE IN SERIES.

         The aggregate principal amount of Securities which may be authenticated
and delivered under this Indenture is unlimited. The Securities may be issued in
one or more series. There shall be established in or pursuant to a Board
Resolution or established in one or more indentures supplemental hereto, prior
to the issuance of Securities of any series,

                  (1) the title of the Securities of the series (which shall
         distinguish the Securities of the series from Securities of any other
         series);

                  (2) any limit upon the aggregate principal amount of the
         Securities of the series which may be authenticated and delivered under
         this Indenture (except for Securities authenticated and delivered upon
         registration of transfer of, or in exchange for, or in lieu of, other
         Securities of the series pursuant to Sections 304, 305, 306, 907, 1107
         or 1202 and except for any Securities which, pursuant to Section 303,
         are deemed never to have been authenticated and delivered hereunder);

                  (3) the Person to whom any interest on a Security of the
         series shall be payable, if other than the Person in whose name that
         Security (or one or more Predecessor Securities) is registered at the
         close of business on the Regular Record Date for such interest;

                                       27
<PAGE>

                  (4) the date or dates, or the method or methods (and related
         procedures) by which such date or dates will be determined or extended,
         on which the principal of the Securities of the series is payable;

                  (5) the rate or rates at which the Securities of the series
         shall bear interest, if any, or the Floating or Adjustable Rate
         Provision pursuant to which such rates shall be determined, the date or
         dates from which such interest shall accrue, the Interest Payment Dates
         on which any such interest shall be payable and the Regular Record Date
         for any interest payable on any Interest Payment Date;

                  (6) whether the Securities of the series would be secured
         pursuant to Section 901(7);

                  (7) the place or places where the principal of (and premium,
         if any) and interest, if any, on Securities of the series shall be
         payable;

                  (8) if applicable, the period or periods within which, the
         price or prices at which (including premium, if any) and the terms and
         conditions upon which Securities of the series shall be redeemed, in
         whole or in part, at the option of the Company pursuant to a sinking
         fund or otherwise;

                  (9) the obligation, if any, of the Company to redeem or
         purchase Securities of the series pursuant to any sinking fund or
         analogous provisions or at the option of a Holder thereof and the
         period or periods within which, the price or prices at which and the
         terms and conditions upon which Securities of the series shall be
         redeemed or purchased, in whole or in part, pursuant to such
         obligation;

                  (10) if applicable, the terms of any right to convert or
         exchange Securities of the series into any securities or property of
         the Company or other issuers;

                  (11) if other than denominations of $1,000 and any integral
         multiple thereof (or the equivalent thereof in one or more Foreign
         Currencies, currency units or composite currencies), the denominations
         in which Securities of the series shall be issuable;

                  (12) if the amount of payments of principal of (or premium, if
         any) or interest, if any, on any Securities of the series may be
         determined with reference to one or more indices, the manner in which
         such amounts shall be determined;

                  (13) if other than currency of the United States, one or more
         Foreign Currencies, currency units or composite currencies in which the
         Securities of the series are to be denominated;

                  (14) if other than the coin or currency in which the
         Securities of the series are denominated, the coin or currency in which
         payment of the principal of (and premium, if any) and interest, if any,
         on the Securities of the series shall be payable;

                                       28
<PAGE>

                  (15) the price or prices (expressed as a percentage of the
         principal amount thereof) at which the Securities will be issued and,
         if other than the principal amount thereof, the portion of the
         principal amount of Securities of the series which shall be payable
         upon declaration of acceleration of the Maturity thereof pursuant to
         Section 502 or provable under any applicable federal or state
         bankruptcy or similar law pursuant to Section 503;

                  (16) if applicable, that the Securities of the series shall be
         issuable in whole or in part in the form of one or more Global
         Securities and, in such case, the Depositary or Depositaries for such
         Global Security or Global Securities and any circumstance other than
         those set forth in Section 305 in which any such Global Security may be
         transferred to, and registered and exchanged for Securities registered
         in the name of, a Person other than the Depositary for such Global
         Security or a nominee thereof and in which any such transfer may be
         registered;

                  (17) whether the Securities are to be issued as Original Issue
         Discount Securities;

                  (18) whether the interest, if any, on the Securities is to be
         payable, at the election of the Company or a holder thereof, in cash or
         in PIK Securities and the period or periods within which, and the terms
         and conditions upon which, such election may be made;

                  (19) any other event or events of default applicable with
         respect to the Securities of the series in addition to those provided
         in Section 501(1) through (7);

                  (20) any other covenant or warranty included for the benefit
         of Securities of the series in addition to (and not inconsistent with)
         those included in this Indenture for the benefit of Securities of all
         series, or any other covenant or warranty included for the benefit of
         Securities of the series in lieu of any covenant or warranty included
         in this Indenture for the benefit of Securities of all series, or any
         provision that any covenant or warranty included in this Indenture for
         the benefit of Securities of all series shall not be for the benefit of
         Securities of the series, or any combination of such covenants,
         warranties or provisions;

                  (21) any restriction or condition on the transferability of
         the Securities of the series;

                  (22) any authenticating or paying agents, registrars,
         conversion agents or any other agents with respect to the Securities of
         the series;

                  (23) whether the Securities of the series shall have the
         benefits of any Guarantee and, if so, whether such Guarantee will be by
         the U.S. Guarantor only, by any other Guarantor only, by one or more of
         the U.S. Guarantor and/or any other Guarantor jointly and severally or
         otherwise, and the terms and provisions applicable to any such
         Guarantee; and

                                       29
<PAGE>

                  (24) any other terms of the series (which terms shall not be
         inconsistent with the provisions of this Indenture, except as permitted
         by Section 901(6)).

         All Securities of any one series shall be substantially identical
except as to denomination and except as may otherwise be provided in or pursuant
to the Board Resolution referred to above or in any such indenture supplemental
hereto.

         If any of the terms of the series are established by action taken
pursuant to a Board Resolution, a copy of such action shall be delivered to the
Trustee.

         SECTION 302. DENOMINATIONS.

         The Securities of each series shall be issuable in registered form
without coupons in such denominations as shall be specified as contemplated by
Section 301. In the absence of any such provisions with respect to the
Securities of any series, the Securities of such series shall be issuable in
denominations of $1,000 and any integral multiple thereof and if applicable, the
equivalents thereof in one or more Foreign Currencies, currency units or
composite currencies.

         SECTION 303. EXECUTION, AUTHENTICATION, DELIVERY AND DATING.

         The Securities shall be executed on behalf of the Company by its
Chairman, a Vice Chairman, its President, any Vice President, its Treasurer or
Assistant Treasurer, its Controller or Assistant Controller under its corporate
seal reproduced thereon attested by its Corporate Secretary or one of its
Assistant Corporate Secretaries. Any Guarantee endorsed on the Securities shall
be executed on behalf of each Guarantor by its Chairman, a Vice Chairman, its
President, any Vice President, its Treasurer or Assistant Treasurer, its
Controller or Assistant Controller under its corporate seal reproduced thereon
attested by its Corporate Secretary or one its Assistant Corporate Secretaries.
The signature of any of these officers of the Company or any Guarantor on the
Securities may be manual or facsimile.

         The seal of the Company may be in the form of a facsimile thereof and
may be impressed, affixed, imprinted or otherwise reproduced on the Securities.
Securities and any Guarantee bearing the manual or facsimile signatures of
individuals who were at any time the proper officers of the Company or any
Guarantor, as the case may be, shall bind the Company or any Guarantor, as the
case may be, notwithstanding that such individuals or any of them have ceased to
hold such offices prior to the authentication and delivery of such Securities or
did not hold such offices at the date of such Securities. Minor typographical
and other minor errors in the text of any Security or minor defects in the seal
or facsimile signature on any Security shall not affect the validity or
enforceability of such Security or Guarantee, if applicable, if it has been duly
authenticated and delivered by the Trustee.

         At any time and from time to time after the execution and delivery of
this Indenture, the Company may deliver Securities of any series executed by the
Company to the Trustee for authentication, together with a Company Order for the
authentication and delivery of such Securities, and the Trustee in accordance
with the Company Order shall authenticate and deliver such Securities. If the
form or terms of the Securities of the series have been established in or

                                       30
<PAGE>

pursuant to one or more Board Resolutions or indentures supplemental hereto as
permitted by Sections 201 and 301, in authenticating such Securities, and
accepting the additional responsibilities under this Indenture in relation to
such Securities, the Trustee shall be entitled to receive, and (subject to
Section 601) shall be fully protected in relying upon, an Opinion of Counsel
stating,

                  (a) if the form of such Securities has been established by or
         pursuant to Board Resolutions or indentures supplemental hereto as
         permitted by Section 201, that such form has been established in
         conformity with the provisions of this Indenture;

                  (b) if the terms of such Securities have been established by
         or pursuant to Board Resolutions or indentures supplemental hereto as
         permitted by Section 301, that such terms have been established in
         conformity with the provisions of this Indenture; and

                  (c) that such Securities, when authenticated and delivered by
         the Trustee and issued by the Company in the manner and subject to any
         conditions specified in such Opinion of Counsel, will constitute valid
         and legally binding obligations of the Company and any Guarantor (if
         applicable), enforceable in accordance with their terms, subject to
         bankruptcy, insolvency, fraudulent transfer, reorganization, moratorium
         and similar laws of general applicability relating to or affecting
         creditors' rights generally and to general equity principles.

         The Trustee shall have the right to decline to authenticate and deliver
any Securities under this Section if the Trustee, being advised by counsel,
determines that such action may not lawfully be taken or if the Trustee in good
faith by its board of directors, executive committee, or a trust committee of
directors or committee of Responsible Officers of the Trustee shall determine
that such action would expose the Trustee to personal liability to existing
Holders of Securities.

         Notwithstanding the provisions of Section 301 and of the preceding
paragraph, if all Securities of a series are not to be originally issued at one
time, it shall not be necessary to deliver the Board Resolution otherwise
required pursuant to Section 301 or the Company Order and Opinion of Counsel
otherwise required pursuant to such preceding paragraph at or prior to the time
of authentication of each Security of such series if such documents are
delivered at or prior to the authentication upon original issuance of the first
Security of such series to be issued.

         Each Security shall be dated the date of its authentication.

         No Security, nor any Guarantee endorsed thereon, shall be entitled to
any benefit under this Indenture or be valid or obligatory for any purpose
unless there appears on such Security a certificate of authentication
substantially in the form provided for herein executed by the Trustee by manual
signature, and such certificate upon any Security shall be conclusive evidence,
and the only evidence, that such Security has been duly authenticated and
delivered hereunder. Notwithstanding the foregoing, if any Security shall have
been authenticated and delivered hereunder but never issued and sold by the
Company, and the Company shall deliver such Security to the Trustee for
cancellation as provided in Section 309, for all purposes of this

                                       31
<PAGE>

Indenture such Security shall be deemed never to have been authenticated and
delivered hereunder and shall never be entitled to the benefits of this
Indenture.

         SECTION 304. TEMPORARY SECURITIES.

         Pending the preparation of definitive Securities of any series, the
Company may execute, and upon Company Order the Trustee shall authenticate and
deliver, temporary Securities which are printed, lithographed, typewritten,
mimeographed or otherwise produced, in any authorized denomination,
substantially of the tenor of the definitive Securities in lieu of which they
are issued and with such appropriate insertions, omissions, substitutions and
other variations as the officers of the Company executing such Securities may
determine, as evidenced by their execution of such Securities.

         If temporary Securities of any series are issued, the Company will
cause definitive Securities of that series to be prepared without unreasonable
delay. After the preparation of definitive Securities of such series, the
temporary Securities of such series shall be exchangeable for definitive
Securities of such series upon surrender of the temporary Securities of such
series at the office or agency of the Company in a Place of Payment for that
series, without charge to the Holder. Upon surrender for cancellation of any one
or more temporary Securities of any series, the Company shall execute and the
Trustee shall authenticate and deliver in exchange therefor one or more
definitive Securities of the same series, of any authorized denominations and of
a like aggregate principal amount and tenor. Until so exchanged the temporary
Securities of any series shall in all respects be entitled to the same benefits
under this Indenture as definitive Securities of such series and tenor.

         SECTION 305. REGISTRATION, REGISTRATION OF TRANSFER AND EXCHANGE.

         The Company shall cause to be kept at the Corporate Trust Office of the
Trustee a register (the register maintained in such office and in any other
office or agency of the Company in a Place of Payment being herein sometimes
collectively referred to as the "Security Register") in which, subject to such
reasonable procedures as it or the Trustee may prescribe, the Company shall
provide for the registration of Securities and of transfers of Securities. The
Trustee is hereby appointed "Security Registrar" for the purpose of registering
Securities and transfers of Securities as herein provided.

         Upon surrender for registration of transfer of any Security of any
series at the office or agency in a Place of Payment for that series, the
Company and each Guarantor (if applicable) shall execute, and the Trustee shall
authenticate and deliver, in the name of the designated transferee or
transferees, one or more new Securities, with an endorsement of the Guarantee
(if applicable) executed by each Guarantor, of the same series, of any
authorized denominations and of a like aggregate principal amount and tenor.

         At the option of the Holder, Securities of any series may be exchanged
for other Securities of the same series, of any authorized denominations and of
a like aggregate principal amount and tenor, upon surrender of the Securities to
be exchanged at such office or agency. Whenever any Securities are so
surrendered for exchange, the Company and each Guarantor (if

                                       32
<PAGE>

applicable) shall execute, and the Trustee shall authenticate and deliver, the
Securities, with an endorsement of the Guarantee (if applicable) executed by
each Guarantor, which the Holder making the exchange is entitled to receive.

         All Securities issued upon any registration of transfer or exchange of
Securities shall be the valid obligations of the Company, and any Guarantor (if
applicable) evidencing the same debt, and entitled to the same benefits under
this Indenture, as the Securities surrendered upon such registration of transfer
or exchange.

         Every Security presented or surrendered for registration of transfer,
exchange, redemption or payment shall (if so required by the Company, any
Guarantor (if applicable) or the Trustee) be duly endorsed, or be accompanied by
a written instrument of transfer in form satisfactory to the Company and the
Security Registrar duly executed, by the Holder thereof or his attorney duly
authorized in writing.

         No service charge shall be made for any registration of transfer or
exchange of Securities, but the Company, any Guarantor (if applicable) or the
Trustee may require payment of a sum sufficient to cover any tax or other
governmental charge that may be imposed in connection with any registration of
transfer or exchange of Securities, other than exchanges pursuant to Section
304, 907, 1107 or 1202 not involving any transfer.

         None of the Company, any Guarantor (if applicable) or the Trustee shall
be required (i) to issue, register the transfer of or exchange Securities of any
series during a period beginning at the opening of business 15 days before the
day of the mailing of a notice of redemption of Securities of that series
selected for redemption under Section 1103 and ending at the close of business
on the day of such mailing, or (ii) to register the transfer of or exchange any
Security so selected for redemption in whole or in part, except the unredeemed
portion of any Security being redeemed in part.

         Notwithstanding any other provision in this Indenture, no Global
Security may be transferred to, or registered or exchanged for Securities
registered in the name of, any Person other than the Depositary for such Global
Security or any nominee thereof, and no such transfer may be registered, unless
(1) such Depositary (A) notifies the Company, any Guarantor (if applicable) and
the Trustee that it is unwilling or unable to continue as Depositary for such
Global Security or (B) ceases to be a clearing agency registered under the
Exchange Act, and, in either case, the Company does not appoint a successor
depository in 90 days, (2) the Company and any Guarantor (if applicable)
executes and delivers to the Trustee a Company Order that such Global Security
shall be so transferable, registrable and exchangeable, and such transfers shall
be registrable, (3) there shall have occurred and be continuing an Event of
Default with respect to the Securities evidenced by such Global Security or (4)
there shall exist such other circumstances, if any, as have been specified for
this purpose as contemplated by Section 301. Notwithstanding any other provision
in this Indenture, a Global Security to which the restriction set forth in the
preceding sentence shall have ceased to apply may be transferred only to, and
may be registered and exchanged for Securities registered only in the name or
names of, such Person or Persons as the Depositary for such Global Security
shall have directed and no transfer thereof other than such a transfer may be
registered.

                                       33
<PAGE>

         Every Security authenticated and delivered upon registration of
transfer of, or in exchange for or in lieu of, a Global Security to which the
restriction set forth in the first sentence of the preceding paragraph shall
apply, whether pursuant to this Section, Section 304, 306, 907, 1107 or 1202 or
otherwise, shall be authenticated and delivered in the form of, and shall be, a
Global Security.

         SECTION 306. MUTILATED, DESTROYED, LOST AND STOLEN SECURITIES.

         If there shall be delivered to the Company, any Guarantor (if
applicable) or the Trustee (i) a mutilated Security, or (ii) evidence to their
satisfaction of the destruction, loss or theft of any Security and in either
case such security or indemnity as may be required by either of them to save
each of them and any agent of either of them harmless, then, in the absence of
notice to the Company or the Trustee that such Security has been acquired by a
bona fide purchaser, the Company and each Guarantor (if applicable) shall
execute and the Trustee shall authenticate and deliver, in lieu of any such
mutilated, destroyed, lost or stolen Security, a new Security, with an
endorsement of the Guarantee (if applicable) executed by each Guarantor, of the
same series and of like tenor and principal amount and bearing a number not
contemporaneously outstanding.

         In case any such mutilated, destroyed, lost or stolen Security has
become or is about to become due and payable, the Company in its discretion may,
instead of issuing a new Security, pay such Security.

         Upon the issuance of any new Security under this Section, the Company
or the Trustee may require the payment of a sum sufficient to cover any tax or
other governmental charge that may be imposed in relation thereto and any other
expenses (including the fees and expenses of the Trustee) connected therewith.

         Every new Security of any series issued pursuant to this Section in
lieu of any destroyed, lost or stolen Security shall constitute an original
additional contractual obligation of the Company and any Guarantor (if
applicable), whether or not the destroyed, lost or stolen Security shall be at
any time enforceable by anyone, and shall be entitled to all the benefits of
this Indenture equally and proportionately with any and all other Securities of
that series duly issued hereunder.

         The provisions of this Section are exclusive and shall preclude (to the
extent lawful) all other rights and remedies with respect to the replacement or
payment of mutilated, destroyed, lost or stolen Securities.

         SECTION 307. PAYMENT OF INTEREST; INTEREST RIGHTS PRESERVED.

         Except as otherwise provided as contemplated by Section 301 with
respect to any series of Securities, interest on any Security which is payable,
and is punctually paid or duly provided for, on any Interest Payment Date shall
be paid to the Person in whose name that Security (or one or more Predecessor
Securities) is registered at the close of business on the Regular Record Date
for such interest.

                                       34
<PAGE>

         Any interest on any Security of any series which is payable, but is not
punctually paid or duly provided for, on any Interest Payment Date (herein
called "Defaulted Interest") shall forthwith cease to be payable to the Holder
on the relevant Regular Record Date by virtue of having been such Holder, and
such Defaulted Interest may be paid by the Company, at its election in each
case, as provided in Clause (1) or (2) below:

                  (1) The Company may elect to make payment of any Defaulted
         Interest to the Persons in whose names the Securities of such series
         (or their respective Predecessor Securities) are registered at the
         close of business on a Special Record Date for the payment of such
         Defaulted Interest, which shall be fixed in the following manner. The
         Company shall notify the Trustee in writing of the amount of Defaulted
         Interest proposed to be paid on each Security of such series and the
         date of the proposed payment, and at the same time the Company shall
         deposit with the Trustee an amount of money equal to the aggregate
         amount proposed to be paid in respect of such Defaulted Interest or
         shall make arrangements reasonably satisfactory to the Trustee for such
         deposit prior to the date of the proposed payment, such money when
         deposited to be held in trust for the benefit of the Persons entitled
         to such Defaulted Interest as in this Clause provided. Thereupon the
         Trustee shall fix a Special Record Date for the payment of such
         Defaulted Interest which shall be not more than 15 days and not less
         than 10 days prior to the date of the proposed payment and not less
         than 15 days after the receipt by the Trustee of the notice of the
         proposed payment. The Trustee shall promptly notify the Company of such
         Special Record Date and, in the name and at the expense of the Company,
         shall cause notice of the proposed payment of such Defaulted Interest
         and the Special Record Date therefor to be given to each Holder of
         Securities of such series, in the manner set forth in Section 106, not
         less than 10 days prior to such Special Record Date. Notice of the
         proposed payment of such Defaulted Interest and the Special Record Date
         therefor having been so given, such Defaulted Interest shall be paid to
         the Persons in whose names the Securities of such series (or their
         respective Predecessor Securities) are registered at the close of
         business on such Special Record Date and shall no longer be payable
         pursuant to the following Clause (2).

                  (2) The Company may make payment of any Defaulted Interest on
         the Securities of any series in any other lawful manner not
         inconsistent with the requirements of any securities exchange on which
         such Securities may be listed, and upon such notice as may be required
         by such exchange, if, after notice given by the Company to the Trustee
         of the proposed payment pursuant to this Clause, such manner of payment
         shall be deemed practicable by the Trustee.

         Subject to the foregoing provisions of this Section, each Security
delivered under this Indenture upon registration of transfer of or in exchange
for or in lieu of any other Security shall carry the rights to accrue interest
and the rights to interest accrued and unpaid, which were carried by such other
Security.

         Subject to the provisions of Section 1202, in the case of any Security
which is converted after any Regular Record Date and on or prior to the next
succeeding Interest Payment Date

                                       35
<PAGE>

(other than any Security the principal of (or premium, if any, on)) which shall
become due and payable, whether at a Stated Maturity or by declaration of
acceleration, call for redemption, or otherwise, prior to such Interest Payment
Date), interest whose Stated Maturity is on such Interest Payment Date shall be
payable on such Interest Payment Date notwithstanding such conversion and such
interest (whether or not punctually paid or duly provided for) shall be paid to
the Person in whose name that Security (or any one or more Predecessor
Securities) is registered at the close of business on such Regular Record Date.
Except as otherwise expressly provided in the immediately preceding sentence, in
the case of any Security which is converted, interest whose Stated Maturity is
after the date of conversion of such Security shall not be payable.

         SECTION 308. PERSONS DEEMED OWNERS.

         Prior to due presentment of a Security for registration of transfer,
the Company, the Trustee and any Guarantor (if applicable) and any agent thereof
may treat the Person in whose name such Security is registered as the owner of
such Security for the purpose of receiving payment of principal of and any
premium and (subject to Section 307) any interest on such Security and for all
other purposes whatsoever, whether or not such Security be overdue, and none of
the Company, the Trustee, any Guarantor (if applicable) or any agent of any of
them shall be affected by notice to the contrary.

         SECTION 309. CANCELLATION.

         All Securities surrendered for payment, redemption, registration of
transfer or exchange or for credit against any sinking fund payment or for
conversion shall, if surrendered to any Person other than the Trustee, be
delivered to the Trustee and shall be promptly canceled by it. The Company may
at any time deliver to the Trustee for cancellation any Securities previously
authenticated and delivered hereunder which the Company may have acquired in any
manner whatsoever, and may deliver to the Trustee (or to any other Person for
delivery to the Trustee) for cancellation any Securities previously
authenticated hereunder which the Company has not issued and sold, and all
Securities so delivered shall be promptly canceled by the Trustee. No Securities
shall be authenticated in lieu of or in exchange for any Securities canceled as
provided in this Section, except as expressly permitted by this Indenture. All
canceled Securities held by the Trustee shall be disposed of as directed by a
Company Order or, in the absence of such Company Order, in accordance with the
Trustee's customary practices. Acquisition by the Company of any Security shall
not operate as a redemption or satisfaction of the indebtedness represented by
such Security unless and until the same is delivered to the Trustee for
cancellation.

         SECTION 310. COMPUTATION OF INTEREST.

         Except as otherwise specified as contemplated by Section 301 for
Securities of any series, interest on the Securities of each series shall be
computed on the basis of a 360-day year of twelve 30-day months.

         SECTION 311. CUSIP OR CINS NUMBERS.

                                       36
<PAGE>

         The Company in issuing the Securities may use "CUSIP" or "CINS" numbers
(if then generally in use, and in addition to the other identification numbers
printed on the Securities), and, if so, the Trustee shall use "CUSIP" or "CINS"
numbers in notices of redemption as a convenience to Holders; provided, however,
that any such notice may state that no representation is made as to the
correctness of such "CUSIP" or "CINS" numbers either as printed on the
Securities or as contained in any notice of a redemption and that reliance may
be placed only on the other identification numbers printed on the Securities,
and any such redemption shall not be affected by any defect in or omission of
such "CUSIP" or "CINS" numbers.

                                  ARTICLE FOUR

                           SATISFACTION AND DISCHARGE

         SECTION 401. SATISFACTION AND DISCHARGE OF INDENTURE.

         This Indenture shall upon Company Request cease to be of further effect
(except as to any surviving rights of conversion, registration of transfer or
exchange of Securities of a series herein expressly provided for) with respect
to Securities of any series, and the Trustee, at the expense of the Company,
shall execute proper instruments acknowledging satisfaction and discharge of
this Indenture with respect to a series, when

                  (1)  either

                           (A) all Securities of such series theretofore
                  authenticated and delivered (other than (i) Securities which
                  have been destroyed, lost or stolen and which have been
                  replaced or paid as provided in Section 306 and (ii)
                  Securities of such series for whose payment money has
                  theretofore been deposited in trust or segregated and held in
                  trust by the Company and thereafter repaid to the Company or
                  discharged from such trust, as provided in Section 1006) have
                  been delivered to the Trustee for cancellation; or

                           (B) all such Securities of such series not
                  theretofore delivered to the Trustee for cancellation

                                    (i) have become due and payable, or

                                    (ii) will become due and payable at their
                           Stated Maturity within one year, or

                                    (iii) are to be called for redemption within
                           one year under arrangements reasonably satisfactory
                           to the Trustee for the giving of notice of redemption
                           by the Trustee in the name, and at the expense, of
                           the Company, and the Company, in the case of (i),
                           (ii) or (iii) above, has deposited or caused to be
                           deposited with the Trustee in trust irrevocably (A)
                           money (in [United States dollars]) in an amount, or
                           (B) U.S.

                                       37
<PAGE>

                           Government Obligations that through the scheduled
                           payment of principal and interest in respect thereof
                           in accordance with their terms will provide, not
                           later than one day before the due date of any
                           payment, money in an amount, or (C) a combination
                           thereof, sufficient, in the opinion of a nationally
                           recognized firm of independent public accountants
                           expressed in a written certification thereof
                           delivered to the Trustee, to pay and discharge the
                           entire indebtedness on such Securities of such series
                           not theretofore delivered to the Trustee for
                           cancellation, for principal of (and premium, if any)
                           and interest to the date of such deposit (in the case
                           of Securities of such series which have become due
                           and payable) or to the Stated Maturity or Redemption
                           Date, as the case may be;

                  (2) the Company has paid or caused to be paid all other sums
         payable hereunder by the Company; and

                  (3) the Company has delivered to the Trustee an Officers'
         Certificate and an Opinion of Counsel, each stating that all conditions
         precedent herein provided for relating to the satisfaction and
         discharge of this Indenture with respect to such series have been
         complied with.

         In the event there are Securities of two or more series outstanding
hereunder, the Trustee shall be required to execute an instrument acknowledging
satisfaction and discharge of this Indenture only if requested to do so with
respect to Securities of a particular series as to which it is Trustee and if
the other conditions thereto are met. In the event that there are two or more
Trustees hereunder, then the effectiveness of any such instrument shall be
conditioned upon receipt of such instruments from all Trustees hereunder.

         Notwithstanding the satisfaction and discharge of this Indenture with
respect to a particular series, the obligations of the Company to the Trustee
under Section 607, the obligations of the Company to any Authenticating Agent
under Section 614 and, if money shall have been deposited with the Trustee
pursuant to subclause (B) of Clause (1) of this Section, the obligations of the
Trustee under Section 402 and the last paragraph of Section 1006 shall survive
until there are no Securities Outstanding with respect to a particular series
and the obligations of the Company and the Trustee with respect to all other
series of Securities shall survive.

         SECTION 402. APPLICATION OF TRUST FUND.

         Subject to provisions of the last paragraph of Section 1006, all
amounts deposited with the Trustee pursuant to Section 401 shall be held in
trust and applied by it, in accordance with the provisions of the Securities and
this Indenture, to the payment, either directly or through any Paying Agent
(including the Company acting as its own Paying Agent) as the Trustee may
determine, to the Persons entitled thereto, of the principal and any premium and
interest for whose payment such funds have been deposited with the Trustee.
Money deposited pursuant to this Section not in violation of this Indenture
shall not be subject to claims of the holders of Senior Debt under Article
Seventeen.

                                       38
<PAGE>

                                  ARTICLE FIVE

                                    REMEDIES

         SECTION 501. EVENTS OF DEFAULT.

         "Event of Default" whenever used with respect to Securities of any
series means any one of the following events and such other events as may be
established with respect to the Securities of such series as contemplated by
Section 301 hereof (whether or not it shall be occasioned by the provisions of
Article Seventeen):

                  (1) Default in the payment of any installment of interest upon
         any of the Securities of such series as and when the same shall become
         due and payable, and continuance of such default for a period of 30
         days; or

                  (2) Default in the payment of the principal, premium, if any,
         on any of the Securities of such series as and when the same shall
         become due and payable either at maturity, upon redemption, by
         declaration of acceleration or otherwise and continuance of such
         default for a period of 10 days; or

                  (3) Default in the making of any sinking fund payment, whether
         mandatory or optional, as and when the same shall become due and
         payable by the terms of the Securities of such series and continuance
         of such default for a period of 10 days; or

                  (4) Failure on the part of the Company or any Guarantor (if
         applicable) duly to observe or perform any other of the covenants or
         agreements on the part of the Company or any Guarantor (if applicable)
         contained in this Indenture (other than those set forth exclusively in
         the terms of any other particular series of Securities established as
         contemplated by this Indenture for the benefit of such other series)
         and written notice of such failure, stating that such notice is a
         "Notice of Default" hereunder, and requiring the Company and any
         Guarantor (if applicable) to remedy the same, shall have been given by
         registered or certified mail, return receipt requested, to the Company
         and any Guarantor (if applicable) by the Trustee, or to the Company,
         any Guarantor (if applicable) and the Trustee by the Holders of at
         least 25% in aggregate principal amount of the Outstanding Securities
         of that series, and such failure shall have continued unremedied for a
         period of 90 days after the date of the Company's receipt of such
         Notice of Default; or

                  (5) A decree or order by a court having jurisdiction in the
         premises shall have been entered adjudging the Company or any Guarantor
         (if applicable) bankrupt or insolvent, or approving as properly filed a
         petition seeking reorganization, arrangement, adjustment or composition
         of the Company or any Guarantor (if applicable) under any applicable
         Bankruptcy Law or similar law, and such decree or order shall have
         continued undischarged and unstayed for a period of 90 days; or a
         decree or order of a court having jurisdiction in the premises for the
         appointment of a receiver, liquidator, trustee, assignee, sequestrator
         or similar official in bankruptcy or insolvency of the Company, any
         Guarantor (if applicable) or of all or substantially all of any of
         their respective property,

                                       39
<PAGE>

         or for the winding up or liquidation of the Company's or any
         Guarantor's (if applicable) affairs, shall have been entered, and such
         decree or order shall have continued undischarged and unstayed for a
         period of 90 days; or

                  (6) The Company or any Guarantor (if applicable) shall
         institute proceedings to be adjudicated a voluntary bankrupt, or shall
         consent to the filing of a bankruptcy proceeding against it, or shall
         file a petition or answer or consent seeking reorganization,
         arrangement, adjustment or composition under any applicable Bankruptcy
         Law or similar law, or shall consent to the filing of any such
         petition, or shall consent to the appointment of a receiver,
         liquidator, trustee, assignee, sequestrator or similar official in
         bankruptcy or insolvency of the Company, any Guarantor (if applicable)
         or of all or substantially all of any of their property, or shall make
         an assignment for the benefit of creditors, or shall admit in writing
         the Company's or any Guarantor's (if applicable) inability to pay its
         respective debts generally as they become due and the Company's or any
         Guarantor's (if applicable) willingness to be adjudged a bankrupt, or
         corporate action shall be taken by the Company or any Guarantor (if
         applicable) in furtherance of any of the aforesaid purposes; or

                  (7) If applicable, the Guarantee ceases to be in full force
         and effect or becomes unenforceable or invalid or is declared null and
         void (other than in accordance with the terms of such Guarantee) or any
         Guarantor denies or disaffirms its obligations under such Guarantee; or

                  (8) Any other Event of Default provided with respect to
         Securities of that series.

         The Trustee shall not be charged with knowledge of any default (as
defined in Section 602) or Event of Default unless written notice thereof shall
have been given to the Trustee by the Company, the Paying Agent of that series
(provided that no such notice shall be required to be given if the Trustee acts
as Paying Agent of such series), or by Holders of at least 25% in aggregate
principal amount of the Outstanding Securities of that series.

         SECTION 502. ACCELERATION OF MATURITY; RESCISSION AND ANNULMENT.

         If an Event of Default under Section 501(5) or 501(6) with respect to
Securities of any series at the time Outstanding occurs and is continuing, then
the principal amount (or, if any of the Securities of that series are Original
Issue Discount Securities, such portion of the principal amount of such
Securities as may be specified in the terms thereof) of all of the Securities of
that series shall become immediately due and payable.

         If any other Event of Default with respect to Securities of any series
at the time Outstanding occurs and is continuing, then in every such case the
Trustee or the Holders of not less than 25% in principal amount of the
Outstanding Securities of that series may declare the principal amount (or, if
any of the Securities of that series are Original Issue Discount Securities,
such portion of the principal amount of such Securities as may be specified in
the terms thereof) of all of the Securities of that series to be due and payable
immediately, by a notice in writing to

                                       40
<PAGE>

the Company (and to the Trustee if given by Holders), and upon any such
declaration such principal amount (or specified amount) shall become immediately
due and payable.

         At any time after such a declaration of acceleration with respect to
Securities of any series has been made and before a judgment or decree for
payment of the money due has been obtained by the Trustee as hereinafter in this
Article provided, the Holders of a majority in principal amount of the
Outstanding Securities of that series, by written notice to the Company and the
Trustee, may rescind and annul such declaration and its consequences if

                  (1) the Company or any Guarantor (if applicable) has paid or
         deposited with the Trustee a sum sufficient to pay

                           (A) all overdue interest on all Securities of that
                  series,

                           (B) the principal of (and premium, if any, on) any
                  Securities of that series which have become due otherwise than
                  by such declaration of acceleration and any interest thereon
                  at the rate or rates prescribed therefor in such Securities,

                           (C) to the extent that payment of such interest is
                  lawful, interest upon overdue interest at the rate or rates
                  prescribed therefor in such Securities, and

                           (D) all sums paid or advanced by the Trustee
                  hereunder and the reasonable compensation, expenses,
                  disbursements and advances of the Trustee, its agents and
                  counsel; and

                  (2) all Events of Default with respect to Securities of that
         series other than the non-payment of the principal of and interest, if
         any, on the Securities of that series which have become due solely by
         such declaration of acceleration, have been cured or waived as provided
         in Section 513.

No such rescission shall affect any subsequent default or impair any right
consequent thereon.

         SECTION 503. COLLECTION OF INDEBTEDNESS AND SUITS FOR ENFORCEMENT BY
         TRUSTEE.

         The Company covenants that if (whether or not such payment is
prohibited by the provisions of Article Seventeen hereof):

                  (1) default is made in the payment of any interest on any
         Security when such interest becomes due and payable and such default
         continues for a period of 30 days, or

                  (2) default is made in the payment of the principal of (or
         premium, if any, on) any Security at the Maturity thereof and
         continuance of such default for a period of 10 days,

the Company will, upon written demand of the Trustee, pay to it, for the benefit
of the Holders of such Securities, the whole amount then due and payable on such
Securities for principal,

                                       41
<PAGE>

premium, if any, and interest and, to the extent that payment of such interest
shall be legally enforceable, interest, if any, on any overdue principal,
premium and on any overdue interest, at the rate or rates prescribed therefor in
such Securities, and, in addition thereto, such further amount as shall be
sufficient to cover the costs and expenses of collection, including the
reasonable compensation, expenses, disbursements and advances of the Trustee,
its agents and counsel, and other amounts due the Trustee under Section 607,
except such costs and expenses as are a result of negligence or bad faith on the
part of the Trustee. Until such demand is made by the Trustee, the Company may
pay the principal, premium, if any, and interest, if any, on the Securities of
any series to the registered Holders, whether or not the Securities of such
series are overdue.

         If an Event of Default with respect to Securities of any series occurs
and is continuing, the Trustee may in its discretion proceed to protect and
enforce its rights and the rights of the Holders of Securities of such series by
such appropriate judicial proceedings as the Trustee shall deem most effectual
to protect and enforce any such rights, whether for the specific enforcement of
any covenant or agreement in this Indenture or in aid of the exercise of any
power granted herein, or to enforce any other proper remedy.

         SECTION 504. TRUSTEE MAY FILE PROOFS OF CLAIM.

         In case of any judicial proceeding relative to the Company, any
Guarantor (if applicable) or any other obligor upon the Securities, its property
or its creditors, the Trustee shall be entitled and empowered, by intervention
in such proceeding or otherwise, to take any and all actions authorized under
the Trust Indenture Act in order to have claims of the Holders and the Trustee
allowed in any such proceeding. In particular, the Trustee shall be authorized
to collect and receive any moneys or other property payable or deliverable on
any such claims and to distribute the same, and any custodian, receiver,
assignee, trustee, liquidator, sequestrator or other similar official in any
such judicial proceeding is hereby authorized by each Holder to make such
payments to the Trustee and, in the event that the Trustee shall consent to the
making of such payments directly to the Holders, to pay to the Trustee any
amount due it for the reasonable compensation, expenses, disbursements and
advances of the Trustee, its agents and counsel, and any other amounts due the
Trustee under Section 607, except such costs and expenses as are a result of
negligence or bad faith on the part of the Trustee.

         No provision of this Indenture shall be deemed to authorize the Trustee
to authorize or consent to or accept or adopt on behalf of any Holder any plan
of reorganization, arrangement, adjustment or composition affecting the
Securities or the Guarantee (if applicable) or the rights of any Holder thereof
or to authorize the Trustee to vote in respect of the claim of any Holder in any
such proceeding; provided, however, that the Trustee may, on behalf of the
Holders, vote for the election of a trustee in bankruptcy or similar official
and be a member of a creditors' or other similar committee.

         SECTION 505. TRUSTEE MAY ENFORCE CLAIMS WITHOUT POSSESSION OF
         SECURITIES.

         All rights of action and claims under this Indenture or the Securities
may be prosecuted and enforced by the Trustee without the possession of any of
the Securities or the production

                                       42
<PAGE>

thereof in any proceeding relating thereto, and any such proceeding instituted
by the Trustee shall be brought in its own name as trustee of an express trust,
and any recovery of judgment shall, after provision for the payment of the
reasonable compensation, expenses, disbursements and advances of the Trustee,
its agents and counsel except such costs and expenses, as are a result of
negligence or bad faith on the part of the Trustee, be for the ratable benefit
of the Holders of the Securities in respect of which such judgment has been
recovered.

         SECTION 506. APPLICATION OF MONEY COLLECTED.

         Any money collected by the Trustee pursuant to this Article shall be
applied in the following order, at the date or dates fixed by the Trustee and,
in case of the distribution of such money on account of principal, premium, if
any, or interest, if any, upon presentation of the Securities and the notation
thereon of the payment if only partially paid and upon surrender thereof if
fully paid:

                  FIRST: To the payment of all amounts due the Trustee under
         Section 607;

                  SECOND: Subject to Article Seventeen, to the payment of the
         amounts then due and unpaid for principal, premium, if any, and
         interest, if any, on the Securities in respect of which or for the
         benefit of which such money has been collected, ratably, without
         preference or priority of any kind, according to the amounts due and
         payable on such Securities for principal, premium, if any, and
         interest, if any, respectively; and

                  THIRD: To the payment of the remainder, if any, to the
         Company, any Guarantor (if applicable) or any other Person lawfully
         entitled thereto.

         SECTION 507. LIMITATION ON SUITS.

         No Holder of any Security of any series shall have any right to
institute any proceeding, judicial or otherwise, with respect to this Indenture
(including, if applicable, the Guarantee), or for the appointment of a receiver
or trustee, or for any other remedy hereunder, unless

                  (1) such Holder has previously given written notice to the
         Trustee of a continuing Event of Default with respect to the Securities
         of that series;

                  (2) the Holders of not less than 25% in principal amount of
         the Outstanding Securities of that series shall have made written
         request to the Trustee to institute proceedings in respect of such
         Event of Default in its own name as Trustee hereunder;

                  (3) such Holder or Holders have offered to the Trustee
         indemnity reasonably satisfactory in form and substance to the Trustee
         against the costs, expenses and liabilities to be incurred in
         compliance with such request;

                  (4) the Trustee for 60 days after its receipt of such notice,
         request and offer of indemnity has failed to institute any such
         proceeding; and

                                       43
<PAGE>

                  (5) no direction inconsistent with such written request has
         been given to the Trustee during such 60-day period by the Holders of a
         majority in principal amount of the Outstanding Securities of that
         series;

it being understood and intended that no one or more of such Holders shall have
any right in any manner whatever by virtue of, or by availing of, any provision
of this Indenture to affect, disturb or prejudice the rights of any other of
such Holders, or to obtain or to seek to obtain priority or preference over any
other of such Holders or to enforce any right under this Indenture, except in
the manner herein provided and for the equal and ratable benefit of all of such
Holders.

         SECTION 508. UNCONDITIONAL RIGHT OF HOLDERS TO RECEIVE PRINCIPAL,
         PREMIUM AND INTEREST AND TO CONVERT.

         Notwithstanding any other provision in this Indenture, the Holder of
any Security shall have the right, which is absolute and unconditional, to
receive payment of the principal, premium, if any, and (subject to Section 307)
any interest on such Security on the Stated Maturity or Maturities expressed in
such Security (or, in the case of redemption, on the Redemption Date) and to
convert such Securities in accordance with the terms thereof and to institute
suit for the enforcement of any such payment or such right of conversion, and
such rights shall not be impaired without the consent of such Holder.

         SECTION 509. RESTORATION OF RIGHTS AND REMEDIES.

         If the Trustee or any Holder has instituted any proceeding to enforce
any right or remedy under this Indenture and such proceeding has been
discontinued or abandoned for any reason, or has been determined adversely to
the Trustee or to such Holder, then and in every such case, subject to any
determination in such proceeding, the Company, any Guarantor (if applicable),
the Trustee and the Holders shall be restored severally and respectively to
their former positions hereunder and thereafter all rights and remedies of the
Trustee and the Holders shall continue as though no such proceeding had been
instituted.

         SECTION 510. RIGHTS AND REMEDIES CUMULATIVE.

         Except as otherwise provided with respect to the replacement or payment
of mutilated, destroyed, lost or stolen Securities in the last paragraph of
Section 306, no right or remedy herein conferred upon or reserved to the Trustee
or to the Holders is intended to be exclusive of any other right or remedy, and
every right and remedy shall, to the extent permitted by law, be cumulative and
in addition to every other right and remedy given hereunder or now or hereafter
existing at law or in equity or otherwise. The assertion or employment of any
right or remedy hereunder, or otherwise, shall not prevent the concurrent
assertion or employment of any other appropriate right or remedy.

         SECTION 511. DELAY OR OMISSION NOT WAIVER.

         No delay or omission of the Trustee or of any Holder of any Securities
to exercise any right or remedy accruing upon any Event of Default shall impair
any such right or remedy or

                                       44
<PAGE>

constitute a waiver of any such Event of Default or an acquiescence therein.
Subject to Section 507, every right and remedy given by this Article or by law
to the Trustee or to the Holders may be exercised from time to time, and as
often as may be deemed expedient, by the Trustee or by the Holders, as the case
may be.

         SECTION 512. CONTROL BY HOLDERS.

         With respect to the Securities of any series, the Holders of not less
than a majority in principal amount of the Outstanding Securities of such series
shall have the right to direct the time, method and place of conducting any
proceeding for any remedy available to the Trustee, or exercising any trust or
power conferred on the Trustee, with respect to the Securities of such series;
provided that

                  (1) such direction shall not be in conflict with any rule of
         law or with this Indenture, and

                  (2) the Trustee may take any other action deemed proper by the
         Trustee which is not inconsistent with such direction.

         SECTION 513. WAIVER OF PAST DEFAULTS.

         The Holders of not less than a majority in principal amount of the
Outstanding Securities of any series may on behalf of the Holders of all the
Securities of such series waive any past default hereunder with respect to such
series and its consequences, except a default

                  (1) in the payment of the principal, premium, if any, or
         interest, if any, on any Security of such series, or

                  (2) in respect of a covenant or provision hereof which under
         Article Nine cannot be modified or amended without the consent of the
         Holder of each Outstanding Security of such series affected.

         Upon any such waiver, such default shall cease to exist, and any Event
of Default arising therefrom shall be deemed to have been cured, for every
purpose of this Indenture; but no such waiver shall extend to any subsequent or
other default or impair any right consequent thereon.

         SECTION 514. UNDERTAKING FOR COSTS.

         In any suit for the enforcement of any right or remedy under this
Indenture, or in any suit against the Trustee for any action taken, suffered or
omitted by it as Trustee, a court may require any party litigant in such suit to
file an undertaking to pay the costs of such suit, and may assess costs against
any such party litigant, in the manner and to the extent provided in the Trust
Indenture Act; provided, however, that neither this Section 514 nor the Trust
Indenture Act will be deemed to authorize any court to require such an
undertaking or to make such an assessment in any suit instituted by the Company,
any Guarantor (if applicable) or the Trustee.

                                       45
<PAGE>

                                   ARTICLE SIX

                                   THE TRUSTEE

         SECTION 601. CERTAIN DUTIES AND RESPONSIBILITIES.

         The duties and responsibilities of the Trustee shall be as provided by
the Trust Indenture Act.

                  (a) If an Event of Default with respect to Securities of any
         series at the time Outstanding has occurred and is continuing, the
         Trustee shall exercise such of the rights and powers vested in it by
         this Indenture, and use the same degree of care and skill in its
         exercise, as a prudent person would exercise or use under the
         circumstances in the conduct of his or her own affairs.

                  (b) Except during the continuance of an Event of Default:

                           (1) the Trustee need perform only those duties that
                  are specifically set forth in this Indenture and no others and
                  no implied covenants or obligations shall be read into this
                  Indenture against the Trustee; and

                           (2) the Trustee may conclusively rely, as to the
                  truth of the statements and the correctness of the opinions
                  expressed therein, in the absence of bad faith on its part,
                  upon certificates or opinions furnished to the Trustee and
                  conforming to the requirements of this Indenture. The Trustee,
                  however, shall examine such certificates and opinions to
                  determine whether or not they conform to the requirements of
                  this Indenture but need not verify the accuracy of the
                  contents thereof.

                  (c) The Trustee may not be relieved from liability for its own
         negligent action, its own negligent failure to act, or its own willful
         misconduct, except that:

                           (1) this paragraph does not limit the effect of
                  paragraph (b) of this Section;

                           (2) the Trustee shall not be liable for any error of
                  judgment made in good faith by a Responsible Officer, unless
                  it is proved that the Trustee was negligent in ascertaining
                  the pertinent facts; and

                           (3) the Trustee shall not be liable with respect to
                  any action it takes or omits to take in good faith in
                  accordance with a direction received by it pursuant to Section
                  512.

                  (d) Every provision of this Indenture that in any way relates
         to the Trustee is subject to paragraphs (a), (b) and (c) of this
         Section.

                                       46
<PAGE>

                  (e) The Trustee may refuse to perform any duty or exercise any
         right or power unless it receives indemnity reasonably satisfactory to
         it against any loss, liability or expense.

                  (f) The Trustee shall not be liable for interest on any money
         received by it except as the Trustee may agree in writing with the
         Company and each Guarantor (if applicable). Money held in trust by the
         Trustee need not be segregated from other funds, except to the extent
         required by law.

Notwithstanding the foregoing, no provision of this Indenture shall require the
Trustee to expend or risk its own funds or otherwise incur any financial
liability in the performance of any of its duties hereunder, or in the exercise
of any of its rights or powers, if it shall have reasonable grounds for
believing that repayment of such funds or adequate indemnity against such risk
or liability is not reasonably assured to it. Whether or not therein expressly
so provided, every provision of this Indenture relating to the conduct or
affecting the liability of or affording protection to the Trustee shall be
subject to the provisions of this Section.

         SECTION 602. NOTICE OF DEFAULTS.

         If a default or an Event of Default occurs and is continuing hereunder
with respect to Securities of any series, and if such default or Event of
Default is known to a Responsible Officer of the Trustee, the Trustee shall mail
the Holders of Securities of such series notice of such default within 90 days
after it occurs; provided, however, that in the case of any default of the
character specified in Section 501(4) with respect to Securities of such series,
no such notice to Holders shall be given until at least 30 days after the
occurrence thereof. Except in the case of a default in payment on any Security
of any series or in the payment of any sinking fund installment, the Trustee may
withhold notice if and so long as a trust committee of directors or Responsible
Officers of the Trustee in good faith determines that withholding the notice is
in the interest of Holders of Securities of such series. For the purpose of this
Section, the term "default" means any event which is, or after notice or lapse
of time or both would become, an Event of Default with respect to Securities of
such series.

         SECTION 603. CERTAIN RIGHTS OF TRUSTEE.

         Subject to the provisions of Section 601:

                  (a) the Trustee may rely and shall be protected in acting or
         refraining from acting upon any resolution, certificate, statement,
         instrument, opinion, report, notice, request, direction, consent,
         order, bond, debenture, note, other evidence of indebtedness or other
         paper or document believed by it to be genuine and to have been signed
         or presented by the proper party or parties;

                  (b) any request or direction of the Company or any Guarantor
         mentioned herein shall be sufficiently evidenced by a Company Request
         or Company Order and any resolution of the Board of Directors may be
         sufficiently evidenced by a Board Resolution;

                                       47
<PAGE>

                  (c) whenever in the administration of this Indenture the
         Trustee shall deem it desirable that a matter be proved or established
         prior to taking, suffering or omitting any action hereunder, the
         Trustee (unless other evidence be herein specifically prescribed) may,
         in the absence of bad faith on its part, rely upon an Officers'
         Certificate;

                  (d) the Trustee may consult with counsel and the written
         advice of such Counsel or any Opinion of Counsel shall be full and
         complete authorization and protection in respect of any action taken,
         suffered or omitted by it hereunder in good faith and in reliance
         thereon;

                  (e) the Trustee shall be under no obligation to exercise any
         of the rights or powers vested in it by this Indenture at the request
         or direction of any of the Holders pursuant to this Indenture, unless
         such Holders shall have offered to the Trustee security or indemnity
         reasonably satisfactory in form and substance to the Trustee against
         the costs, expenses and liabilities which might be incurred by it in
         compliance with such request or direction;

                  (f) the Trustee shall not be bound to make any investigation
         into the facts or matters stated in any resolution, certificate,
         statement, instrument, opinion, report, notice, request, direction,
         consent, order, bond, debenture, note, other evidence of indebtedness
         or other paper or document, but the Trustee, in its discretion, may
         make such further inquiry or investigation into such facts or matters
         as it may see fit, and, if the Trustee shall determine to make such
         further inquiry or investigation, it shall upon reasonable notice to
         the Company or any Guarantor (as applicable) be entitled to examine the
         books, records and premises of the Company or any Guarantor (as
         applicable) personally or by agent or attorney at a time and place
         acceptable to the Company or any Guarantor, as the case may be;

                  (g) the Trustee may execute any of the trusts or powers
         hereunder or perform any duties hereunder either directly or by or
         through agents or attorneys and the Trustee shall not be responsible
         for any misconduct or negligence on the part of any agent or attorney
         appointed with due care by it hereunder;

                  (h) the permissive right of the Trustee to take or refrain
         from taking any actions enumerated in this Indenture shall not be
         construed as a duty and the Trustee shall not be answerable for taking
         or refraining from taking such actions other than for its own
         negligence or willful misconduct; and

                  (i) the Trustee shall not be liable for any action it takes or
         omits to take in good faith which it reasonably believes to be
         authorized or within its rights or powers conferred upon it by this
         Indenture.

         SECTION 604. NOT RESPONSIBLE FOR RECITALS OR ISSUANCE OF SECURITIES.

                                       48
<PAGE>

         The recitals contained herein and in the Securities, except the
Trustee's certificates of authentication, shall be taken as the statements of
the Company or any Guarantor (if applicable), and the Trustee or any
Authenticating Agent assumes no responsibility for their correctness. The
Trustee makes no representations as to the validity or sufficiency of this
Indenture or of the Securities. The Trustee or any Authenticating Agent shall
not be accountable for the use or application by the Company of Securities or
the proceeds thereof.

         SECTION 605. MAY HOLD SECURITIES.

         The Trustee, any Authenticating Agent, any Paying Agent, any Security
Registrar or any other agent of the Company or any Guarantor (if applicable), in
its individual or any other capacity, may become the owner or pledgee of
Securities and, subject to Sections 608 and 613, may otherwise deal with the
Company with the same rights it would have if it were not Trustee,
Authenticating Agent, Paying Agent, Security Registrar or such other agent.

         SECTION 606. MONEY HELD IN TRUST.

         Money held by the Trustee in trust hereunder need not be segregated
from other funds except to the extent required by law. The Trustee shall be
under no liability for interest on any money received by it hereunder except as
otherwise agreed in writing with the Company or any Guarantor (if applicable).

         SECTION 607. COMPENSATION AND REIMBURSEMENT.

         The Company agrees

                  (1) to pay to the Trustee from time to time reasonable
         compensation for all services rendered by it hereunder (which
         compensation shall not be limited by any provision of law in regard to
         the compensation of a trustee of an express trust);

                  (2) except as otherwise expressly provided herein, to
         reimburse the Trustee upon its written request for all reasonable
         expenses, disbursements and advances incurred or made by the Trustee in
         accordance with any provision of this Indenture (including the
         reasonable compensation, and reasonable expenses and disbursements of
         its agents and outside counsel), except any such expense, disbursement
         or advance as may be attributable to its negligence or bad faith; and

                  (3) to indemnify the Trustee for, and to hold it harmless
         against, any loss, liability or expense (including the reasonable fees
         and expenses of legal counsel) incurred without negligence or bad faith
         on its part, arising out of or in connection with the acceptance or
         administration of the trust or trusts and the performance of its duties
         hereunder, including the reasonable costs and expenses of defending
         itself against any claim or liability in connection with the exercise
         or performance of any of its powers or duties hereunder.

         To secure the Company's payment obligations under this Section, the
Trustee shall have a lien prior to the Securities on all money or property of
the Company held or collected by the

                                       49
<PAGE>

Trustee in its capacity as Trustee or as Paying Agent hereunder (but not in any
other capacity), except that held in trust to pay principal of (and premium, if
any) or interest on particular Securities.

         When the Trustee incurs expenses or renders services after an Event of
Default specified in Section 501(5) or (6) occurs with respect to any series of
Securities, the expenses and the compensation for the services are intended to
constitute expenses of administration under any Bankruptcy Law or similar law.

         The Company's obligations under this Section 607 and any lien arising
hereunder shall survive the resignation or removal of the Trustee, the discharge
of the Company's obligations pursuant to Article Four or Article Thirteen hereof
and the termination of this Indenture.

         SECTION 608. DISQUALIFICATION; CONFLICTING INTERESTS.

         If the Trustee has or shall acquire any conflicting interest within the
meaning of the Trust Indenture Act, the Trustee shall either eliminate such
interest or resign, to the extent and in the manner provided by, and subject to
the provisions of, the Trust Indenture Act and this Indenture. To the extent
permitted by such Act, the Trustee shall not be deemed to have a conflicting
interest by virtue of being a trustee under this Indenture with respect to
Securities of more than one series.

         SECTION 609. CORPORATE TRUSTEE REQUIRED; ELIGIBILITY.

         There shall at all times be a Trustee hereunder which shall be a Person
that is eligible pursuant to the Trust Indenture Act to act as such and has a
combined capital and surplus of at least $50,000,000 or is a subsidiary of a
corporation which shall be a Person that has a combined capital and surplus of
at least $50,000,000 and which unconditionally and irrevocably guarantees the
obligations of the Trustee hereunder upon terms satisfactory to the Company. If
such Person publishes reports of condition at least annually, pursuant to law or
to the requirements of said supervising or examining authority, then for the
purposes of this Section, the combined capital and surplus of such Person shall
be deemed to be its combined capital and surplus as set forth in its most recent
report of condition so published. If at any time the Trustee shall cease to be
eligible in accordance with the provisions of this Section, it shall resign
immediately in the manner and with the effect hereinafter specified in this
Article.

         SECTION 610. RESIGNATION AND REMOVAL; APPOINTMENT OF SUCCESSOR.

                  (a) No resignation or removal of the Trustee and no
         appointment of a successor Trustee pursuant to this Article shall
         become effective until the acceptance of appointment by the successor
         Trustee in accordance with the applicable requirements of Section 611.

                  (b) The Trustee may resign at any time with respect to the
         Securities of one or more series by giving written notice thereof to
         the Company. If the instrument of acceptance by a successor Trustee
         required by Section 611 shall not have been delivered

                                       50
<PAGE>

         to the Trustee within 30 days after the giving of such notice of
         resignation, the resigning Trustee may petition any court of competent
         jurisdiction for the appointment of a successor Trustee with respect to
         the Securities of such series.

                  (c) The Trustee may be removed at any time with respect to the
         Securities of any series by Act of the Holders of a majority in
         principal amount of the Outstanding Securities of such series,
         delivered to the Trustee and to the Company.

                  (d) If at any time:

                           (1) the Trustee shall fail to comply with Section 608
                  after written request therefor by the Company or by any Holder
                  who has been a bona fide Holder of a Security for at least six
                  months, or

                           (2) the Trustee shall cease to be eligible under
                  Section 609 and shall fail to resign after written request
                  therefor by the Company or by any such Holder, or

                           (3) the Trustee shall become incapable of acting or
                  shall be adjudged a bankrupt or insolvent or a receiver of the
                  Trustee or of its property shall be appointed or any public
                  officer shall take charge or control of the Trustee or of its
                  property or affairs for the purpose of rehabilitation,
                  conservation or liquidation,

                  then, in any such case, (i) the Company by a Board Resolution
                  may remove the Trustee with respect to all Securities, or (ii)
                  subject to Section 514, any Holder who has been a bona fide
                  Holder of a Security for at least six months may, on behalf of
                  itself and all others similarly situated, petition any court
                  of competent jurisdiction for the removal of the Trustee with
                  respect to all Securities and the appointment of a successor
                  Trustee or Trustees.

                  (e) If the Trustee shall resign, be removed or be incapable of
         acting, or if a vacancy shall occur in the office of Trustee for any
         cause, with respect to the Securities of one or more series, the
         Company, by a Board Resolution, shall promptly appoint a successor
         Trustee or Trustees with respect to the Securities of that or those
         series (it being understood that any such successor Trustee may be
         appointed with respect to the Securities of one or more or all of such
         series and that at any time there shall be only one Trustee with
         respect to the Securities of any particular series) and shall comply
         with the applicable requirements of Section 611. If, within one year
         after such resignation, removal or incapability, or the occurrence of
         such vacancy, a successor Trustee with respect to the Securities of any
         series shall be appointed by Act of the Holders of a majority in
         principal amount of the Outstanding Securities of such series delivered
         to the Company and the retiring Trustee, the successor Trustee so
         appointed shall, forthwith upon its acceptance of such appointment in
         accordance with the applicable requirements of Section 611, become the
         successor Trustee with respect to the Securities of such series and to
         that extent supersede the successor Trustee appointed by the Company.
         If no successor Trustee with respect to the Securities of any Series
         shall have been so appointed by the Company or the Holders and accepted
         appointment in the manner

                                       51
<PAGE>

         required by Section 611, any Holder who has been a bona fide Holder of
         a Security of such series for at least six months may, on behalf of
         itself and all others similarly situated, petition any court of
         competent jurisdiction for the appointment of a successor Trustee with
         respect to the Securities of such series.

                  (f) The Company shall give notice of each resignation and each
         removal of the Trustee with respect to the Securities of any series and
         each appointment of a successor Trustee with respect to the Securities
         of any series to all Holders of Securities of such series in the manner
         provided in Section 106. Each notice shall include the name of the
         successor Trustee with respect to the Securities of such series and the
         address of its Corporate Trust Office.

         SECTION 611. ACCEPTANCE OF APPOINTMENT BY SUCCESSOR.

                  (a) In case of the appointment hereunder of a successor
         Trustee with respect to all Securities, every such successor Trustee so
         appointed shall execute, acknowledge and deliver to the Company, any
         Guarantor (if applicable) and to the retiring Trustee an instrument
         accepting such appointment, and thereupon the resignation or removal of
         the retiring Trustee shall become effective and such successor Trustee,
         without any further act, deed or conveyance, shall become vested with
         all the rights, powers, trusts and duties of the retiring Trustee; but,
         on the request of the Company or any Guarantor (if applicable) or the
         successor Trustee, such retiring Trustee shall, upon payment of its
         charges, execute and deliver an instrument transferring to such
         successor Trustee all the rights, powers and trusts of the retiring
         Trustee and shall duly assign, transfer and deliver to such successor
         Trustee all property and money held by such retiring Trustee hereunder,
         subject to its lien, if any, provided for in Section 607.

                  (b) In case of the appointment hereunder of a successor
         Trustee with respect to the Securities of one or more (but not all)
         series, the Company, any Guarantor (if applicable) the retiring Trustee
         and each successor Trustee with respect to the Securities of such
         series shall execute and deliver an indenture supplemental hereto
         wherein each successor Trustee shall accept such appointment and which
         (1) shall contain such provisions as shall be necessary or desirable to
         transfer the rights, powers, trust and duties of the retiring Trustee
         with respect to the Securities of that or those series to which the
         appointment of such successor Trustee relates, (2) if the retiring
         Trustee is not retiring with respect to all Securities, shall contain
         such provisions as shall be deemed necessary or desirable to confirm
         that all the rights, powers, trusts and duties of the retiring Trustee
         with respect to the Securities of that or those series as to which the
         retiring Trustee is not retiring shall continue to be vested in the
         retiring Trustee, and (3) shall add to or change any of the provisions
         of this Indenture as shall be necessary to provide for or facilitate
         the administration of the trusts hereunder by more than one Trustee, it
         being understood that nothing herein or in such supplemental indenture
         shall constitute such Trustee co-trustees of the same trust and that
         each such Trustee shall be trustee of a trust or trusts hereunder
         separate and apart from any trust or trusts hereunder administered by
         any other such Trustee; and upon the execution and delivery of such
         supplemental indenture the resignation or removal of the retiring
         Trustee shall become effective to the extent

                                       52
<PAGE>

         provided therein and each such successor Trustee, without any further
         act, deed or conveyance, shall become vested with all the rights,
         powers, trusts and duties of the retiring Trustee with respect to the
         Securities of that or those series to which the appointment of such
         successor Trustee relates; but, on request of the Company, any
         Guarantor (if applicable) or any successor Trustee, such retiring
         Trustee shall duly assign, transfer and deliver to such successor
         Trustee all property and money held by such retiring Trustee hereunder
         with respect to the Securities of that or those series to which the
         appointment of such successor Trustee relates.

                  (c) Upon request of any such successor Trustee, the Company
         and any Guarantor (if applicable) shall execute any and all instruments
         for more fully and certainly vesting in and confirming to such
         successor Trustee all such rights, powers and trusts referred to in
         paragraphs (a) and (b) of this Section, as the case may be.

                  (d) No successor shall accept its appointment unless at the
         time of such acceptance such successor Trustee shall be qualified and
         eligible under this Article.

         SECTION 612. MERGER, CONVERSION, CONSOLIDATION OR SUCCESSION TO
BUSINESS.

         Any corporation into which the Trustee may be merged or converted or
with which it may be consolidated, or any corporation resulting from any merger,
conversion or consolidation to which the Trustee shall be a party, or any
corporation succeeding to all or substantially all the corporate trust business
of the Trustee, shall be the successor of the Trustee hereunder, provided such
corporation shall be otherwise qualified and eligible under this Article,
without the execution or filing of any paper or any further act on the part of
any of the parties hereto. In case any Securities shall have been authenticated,
but not delivered, by the Trustee then in office, any successor by merger,
conversion or consolidation to such authenticating Trustee may adopt such
authentication and deliver the Securities so authenticated with the same effect
as if such successor Trustee had itself authenticated such Securities.

         SECTION 613. PREFERENTIAL COLLECTION OF CLAIMS AGAINST COMPANY.

         If and when the Trustee shall be or become a creditor of the Company
(or any other obligor upon the Securities), the Trustee shall be subject to the
provisions of the Trust Indenture Act regarding the collection of claims against
the Company (or any such other obligor).

         SECTION 614. APPOINTMENT OF AUTHENTICATING AGENT.

         The Trustee may with the prior written consent of the Company appoint
an Authenticating Agent or Agents with respect to one or more series of
Securities which shall be authorized to act on behalf of the Trustee to
authenticate Securities of such series issued upon original issue and upon
exchange, registration of transfer, partial conversion or partial redemption
thereof or pursuant to Section 306, and Securities so authenticated shall be
entitled to the benefits of this Indenture and shall be valid and obligatory for
all purposes as if authenticated by the Trustee hereunder. Wherever reference is
made in this Indenture to the authentication and delivery of Securities by the
Trustee or the Trustee's certificate of authentication, such reference

                                       53
<PAGE>

shall be deemed to include authentication and delivery on behalf of the Trustee
by an Authenticating Agent and a certificate of authentication executed on
behalf of the Trustee by an Authenticating Agent. Each Authenticating Agent
shall be acceptable to the Company and shall at all times be a corporation
organized and doing business under the laws of the United States of America, any
state thereof or the District of Columbia, authorized under such laws to act as
Authenticating Agent, having a combined capital and surplus of not less than
$50,000,000 and subject to supervision or examination by Federal or state
authority. If such Authenticating Agent publishes reports of condition at least
annually, pursuant to law or to the requirements of said supervising or
examining authority, then for the purposes of this Section, the combined capital
and surplus of such Authenticating Agent shall be deemed to be its combined
capital and surplus as set forth in its most recent report of condition so
published. If at any time an Authenticating Agent shall cease to be eligible in
accordance with the provisions of this Section, such Authenticating Agent shall
resign immediately in the manner and with the effect specified in this Section.

         Any corporation into which an Authenticating Agent may be merged or
converted or with which it may be consolidated, or any corporation resulting
from any merger, conversion or consolidation to which such Authenticating Agent
shall be a party, or any corporation succeeding to the corporate agency or
corporate trust business of an Authenticating Agent, shall continue to be an
Authenticating Agent, provided such corporation shall be otherwise eligible
under this Section, without the execution or filing of any paper or any further
act on the part of the Trustee or the Authenticating Agent.

         An Authenticating Agent may resign at any time by giving written notice
thereof to the Trustee and to the Company and any Guarantor (if applicable). The
Trustee or the Company may at any time terminate the agency of an Authenticating
Agent by giving written notice thereof to such Authenticating Agent and to the
Company, any Guarantor (if applicable) or the Trustee, as the case may be. Upon
receiving such a notice of resignation or upon such a termination, or in case at
any time such Authenticating Agent shall cease to be eligible in accordance with
the provisions of this Section, the Trustee may appoint a successor
Authenticating Agent which shall be acceptable to the Company and any Guarantor
(if applicable) and shall mail written notice of such appointment by first-class
mail, postage prepaid, to all Holders of Securities of the series with respect
to which such Authenticating Agent will serve, as their names and addresses
appear in the Security Register. Any successor Authenticating Agent upon
acceptance of its appointment hereunder shall become vested with all the rights,
powers and duties of its predecessor hereunder, with like effect as if
originally named as an Authenticating Agent. No successor Authenticating Agent
shall be appointed unless eligible under the provisions of this Section.

         The Company agrees to pay to each Authenticating Agent from time to
time reasonable compensation for its services under this Section.

         If an appointment with respect to one or more series is made pursuant
to this Section, the Securities of such series may have endorsed thereon, in
addition to the Trustee's certificate of authentication, an alternative
certificate of authentication in the following form:

                                       54
<PAGE>

         This is one of the Securities of the series designated therein referred
to in the within-mentioned Indenture.

                                                    ,
                               ---------------------
                               as Trustee

                               By                        ,
                                 ------------------------
                               as Authenticating Agent

                               By
                                 ------------------------
                               Authorized Officer

                                  ARTICLE SEVEN

                HOLDERS' LISTS AND REPORTS BY TRUSTEE AND COMPANY

         SECTION 701. COMPANY TO FURNISH TRUSTEE NAMES AND ADDRESSES OF HOLDERS.

         The Company will furnish or cause to be furnished to the Trustee

                  (a) semi-annually, not later than 15 days after each Regular
         Record Date in each year, a list for each series of Securities, in such
         form as the Trustee may reasonably require, of the names and addresses
         of the Holders of Securities of such series as of the preceding Regular
         Record Date, and

                  (b) at such other times as the Trustee may request in writing,
         within 30 days after the receipt by the Company of any such request, a
         list of similar form and content as of a date not more than 15 days
         prior to the time such list is furnished; provided, however, that if
         and so long as the Trustee shall be the Security Registrar for the
         Securities of a series, no such list need be furnished with respect to
         such series of Securities.

         SECTION 702. PRESERVATION OF INFORMATION; COMMUNICATIONS TO HOLDERS.

                  (a) The Trustee shall preserve, in as current a form as is
         reasonably practicable, the names and addresses of Holders contained in
         the most recent list furnished to the Trustee as provided in Section
         701 and the names and addresses of Holders received by the Trustee in
         its capacity as Security Registrar. The Trustee may destroy any list
         furnished to it as provided in Section 701 upon receipt of a new list
         so furnished.

                  (b) The rights of the Holders to communicate with other
         Holders with respect to their rights under this Indenture or under the
         Securities, and the corresponding rights and privileges of the Trustee,
         shall be as provided by the Trust Indenture Act.

                  (c) Every Holder of Securities, by receiving and holding the
         same, agrees with the Company, any Guarantor (if applicable) and the
         Trustee that none of the Company, any

                                       55
<PAGE>

         Guarantor (if applicable) or the Trustee or any of their agents shall
         be held accountable by reason of any disclosure of information as to
         names and addresses of Holders made pursuant to the Trust Indenture Act
         or other applicable law.

         SECTION 703. REPORTS BY TRUSTEE.

                  (a) The Trustee shall transmit to Holders such reports
         concerning the Trustee and its actions under this Indenture as may be
         required pursuant to the Trust Indenture Act at the times and in the
         manner provided pursuant thereto. To the extent that any such report is
         required by the Trust Indenture Act with respect to any 12 month
         period, such report shall cover the 12 month period ending May 15 and
         shall be transmitted by the next succeeding July 15.

                  (b) A copy of each such report shall, at the time of such
         transmission to Holders, be filed by the Trustee with each stock
         exchange upon which any Securities are listed, with the Commission and
         with the Company and any Guarantor (if applicable). The Company will
         notify the Trustee when any Securities are listed on any stock
         exchange.

         SECTION 704. REPORTS BY COMPANY.

         The Company shall file with the Trustee and the Commission, and
transmit to Holders, such information, documents and other reports, and such
summaries thereof, as may be required pursuant to the Trust Indenture Act at the
times and in the manner provided pursuant to such Act. Any information,
documents or reports required to be filed by the Company with the Commission
pursuant to Section 13 or 15(d) of the Exchange Act shall be filed with the
Trustee within 15 days after the same is so required to be filed with the
Commission.

                                  ARTICLE EIGHT

                    CONSOLIDATION, MERGER, OR SALE OF ASSETS

         SECTION 801. COMPANY AND GUARANTORS MAY CONSOLIDATE, ETC. ONLY ON
         CERTAIN TERMS.

         The Company shall not consolidate or amalgamate with or merge into any
other Person or convey, transfer or lease its properties and assets
substantially as an entirety to any Person other than a direct or indirect
wholly-owned Subsidiary of the Company unless:

                  (1) the Company is the surviving Person or the Person formed
         by such consolidation or amalgamation or into which the Company is
         merged or the Person which acquires by conveyance or transfer, or which
         leases, the properties and assets of the Company substantially as an
         entirety shall expressly assume, by an indenture supplemental hereto,
         executed and delivered to the Trustee, in form satisfactory to the
         Trustee, the due and punctual payment of the principal of and interest
         on all the Securities and the performance of every covenant of this
         Indenture on the part of the Company to be performed or observed;

                                       56
<PAGE>

                  (2) immediately after giving effect to such transaction, no
         Default or Event of Default shall have occurred and be continuing; and

                  (3) the Company has delivered to the Trustee an Officers'
         Certificate and an Opinion of Counsel, each stating that such
         consolidation, amalgamation, merger, conveyance, transfer or lease and
         such supplemental indenture comply with this Article and that all
         conditions precedent herein provided for relating to such transaction
         have been complied with.

         No Guarantor, if any of the Securities Outstanding are subject to the
Guarantee by such Guarantor, shall consolidate or amalgamate with or merge into
any other Person or convey, transfer or lease its properties and assets
substantially as an entirety to any Person other than a direct or indirect
wholly-owned Subsidiary of the Company unless:

                  (1) any such Guarantor is the surviving Person or the Person
         formed by such consolidation or into which any such Guarantor is merged
         or the Person which acquires by conveyance or transfer, or which
         leases, the properties and assets of any such Guarantor substantially
         as an entirety shall be, only in the case of a Guarantor that is not
         one of the Foreign Entities, a Person organized and existing under the
         laws of the United States of America, any state thereof or the District
         of Columbia and, in any case, shall expressly assume, by an indenture
         supplemental hereto, executed and delivered to the Trustee, in form
         satisfactory to the Trustee, the due and punctual payment of all
         obligations in respect of the Guarantee and the performance of every
         covenant of this Indenture on the part of any such Guarantor to be
         performed or observed;

                  (2) immediately after giving effect to such transaction, no
         Default or Event of Default shall have occurred and be continuing; and

                  (3) any such Guarantor has delivered to the Trustee an
         Officers' Certificate and an Opinion of Counsel, each stating that such
         consolidation, merger, conveyance, transfer or lease and such
         supplemental indenture comply with this Article and that all conditions
         precedent herein provided for relating to such transaction have been
         complied with.

         SECTION 802. SUCCESSOR SUBSTITUTED.

         Upon any consolidation or amalgamation of the Company or any Guarantor
with, or merger of the Company or any Guarantor into, any other Person, or any
conveyance, transfer or lease of the properties and assets of the Company or any
Guarantor substantially as an entirety in accordance with Section 801, the
successor Person formed by such consolidation or amalgamation or into which the
Company or any Guarantor is merged or to which such conveyance, transfer or
lease is made shall succeed to, and be substituted for, and may exercise every
right and power of, the Company or any Guarantor, as the case may be, under this
Indenture with the same effect as if such successor Person had been named as the
Company or any Guarantor, as the case may be, herein, and thereafter, except in
the case of an amalgamation

                                       57
<PAGE>

or a lease to another Person, the predecessor Person shall be relieved of all
obligations and covenants under this Indenture and the Securities.

                                  ARTICLE NINE

                             SUPPLEMENTAL INDENTURES

         SECTION 901. SUPPLEMENTAL INDENTURES WITHOUT CONSENT OF HOLDERS.

         Without the consent of any Holders, the Company, when authorized by a
Board Resolution, any Guarantor, when authorized by a Board Resolution, and the
Trustee, at any time and from time to time, may enter into one or more
indentures supplemental hereto, in form reasonably satisfactory to the Trustee,
for any of the following purposes:

                  (1) to evidence the succession of another Person to the
         Company and the assumption by any such successor of the covenants of
         the Company herein and in the Securities or to evidence the succession
         of another Person to any Guarantor and the assumption by any such
         successor of the Guarantee of such Guarantor herein and, to the extent
         applicable, endorsed upon any Securities; or

                  (2) to add to the covenants of the Company or any Guarantor
         (if applicable) for the benefit of the Holders of all or any series of
         Securities (and if such covenants are to be for the benefit of less
         than all series of Securities, stating that such covenants are
         expressly being included solely for the benefit of such series) or to
         surrender any right or power herein conferred upon the Company or any
         Guarantor (if applicable); or

                  (3) to add any additional Events of Default for the benefit of
         the Holders of all or any series of Securities (and if such additional
         Events of Default are to be for the benefit of less than all series of
         Securities, stating that such additional Events of Default are
         expressly being included solely for the benefit of such series); or

                  (4) to add to or change any of the provisions of this
         Indenture to such extent as shall be necessary to permit or facilitate
         the issuance of Securities in bearer form, registrable or not
         registrable as to principal, and with or without interest coupons, or
         to permit or facilitate the issuance of Securities in uncertificated
         form; or

                  (5) to add to or change any of the provisions of this
         Indenture to such extent as shall be necessary to permit or facilitate
         the issuance of Securities of any series denominated in one or more
         Foreign Currencies, currency units or composite currencies; or

                  (6) to add to, change or eliminate any of the provisions of
         this Indenture in respect of one or more series of Securities,
         including, without limitation, with respect to any of the provisions
         set forth in Article Seventeen; provided that any such addition, change
         or elimination (i) shall neither (A) apply to any Security of any
         series created prior to the execution of such supplemental indenture
         and entitled to the benefit of such provision nor

                                       58
<PAGE>

         (B) modify the rights of the Holder of any such Security with respect
         to such provision or (ii) shall become effective only when there is no
         such Security Outstanding; or

                  (7) to secure the Securities of any series; or

                  (8) to establish the form or terms of Securities of any series
         as permitted by Sections 201 and 301; or

                  (9) to evidence and provide for the acceptance of appointment
         hereunder by a successor Trustee with respect to the Securities of one
         or more series and to add to or change any of the provisions of this
         Indenture as shall be necessary to provide for or facilitate the
         administration of the trusts hereunder by more than one Trustee,
         pursuant to the requirements of Section 611(b); or

                  (10) to cure any ambiguity, to correct or supplement any
         provision herein which may be inconsistent with any other provision
         herein, or to make any other provisions with respect to matters or
         questions arising under this Indenture; provided that such action
         pursuant to this clause shall not adversely affect the interests of the
         Holders of Securities of any series in any material respect; or

                  (11) to make provision with respect to the conversion rights
         of Holders pursuant to the requirements of Article Twelve, including
         providing for the conversion of the Securities into any security or
         property of the Company; or

                  (12) to conform to any mandatory provisions of law.

         SECTION 902. SUPPLEMENTAL INDENTURES WITH CONSENT OF HOLDERS.

         With the consent of the Holders of not less than a majority of
principal amount of the Outstanding Securities of each series affected by such
supplemental indenture, by Act of said Holders delivered to the Company, any
Guarantor and the Trustee, the Company, when authorized by a Board Resolution,
any Guarantor, when authorized by a Board Resolution, and the Trustee may enter
into an indenture or indentures supplemental hereto for the purpose of adding
any provisions to or changing in any manner or eliminating any of the provisions
of this Indenture or of modifying in any manner the rights of the Holders of
Securities of such series under this Indenture; provided, however, that no such
supplemental indenture shall, without the consent of the Holder of each
Outstanding Security affected thereby,

                  (1) extend the Stated Maturity of the principal of, or any
         installment of principal of or interest on, any Security, or reduce the
         principal amount thereof or the rate of interest thereon (including any
         change in the Floating or Adjustable Rate Provision pursuant to which
         such rate is determined that would reduce such rate for any period) or
         any premium payable upon the redemption thereof, or reduce the amount
         of the principal of an Original Issue Discount Security that would be
         due and payable upon a declaration of acceleration of the Maturity
         thereof pursuant to Section 502, or change any Place of Payment where,
         or the coin or currency in which, any Security or any premium, or

                                       59
<PAGE>

         interest thereon is payable, or impair the right to institute suit for
         the enforcement of any such payment on or after the Stated Maturity
         thereof (or, in the case of redemption, on or after the Redemption
         Date), or

                  (2) reduce the percentage in principal amount of the
         Outstanding Securities of any series, the consent of whose Holders is
         required for any such supplemental indenture, or the consent of whose
         Holders is required for any waiver (of compliance with certain
         provisions of this Indenture or certain defaults hereunder and their
         consequences) provided for in this Indenture, or

                  (3) if applicable, make any change that adversely affects the
         right to convert any Security to which the provisions of Article Twelve
         are applicable or, except as provided in this Indenture, decrease the
         conversion rate or increase the conversion price of any Security, or

                  (4) modify any of the provisions of this Section, Section 513
         or Section 908, except to increase any such percentage or to provide
         that certain other provisions of this Indenture cannot be modified or
         waived without the consent of the Holder of each Outstanding Security
         affected thereby; provided, however, that this clause shall not be
         deemed to require the consent of any Holder with respect to changes in
         the references to "the Trustee" and concomitant changes in this Section
         and Section 908, or the deletion of this proviso, in accordance with
         the requirements of Sections 611(b) and 901(9), or

                  (5) make any change in the subordination provisions of this
         Indenture that would adversely affect the Holders of Securities.

A supplemental indenture which changes or eliminates any covenant or other
provision of this Indenture which has expressly been included solely for the
benefit of one or more particular series of Securities, or which modifies the
rights of the Holders of Securities of such series with respect to such covenant
or other provision, shall be deemed not to affect the rights under this
Indenture of the Holders of Securities of any other series.

         It shall not be necessary for any Act of Holders under this Section to
approve the particular form of any proposed supplemental indenture, but it shall
be sufficient if such Act shall approve the substance thereof.

         SECTION 903. EXECUTION OF SUPPLEMENTAL INDENTURES.

         In executing, or accepting the additional trusts created by, any
supplemental indenture permitted by this Article or the modifications thereby of
the trusts created by this Indenture, the Trustee shall be entitled to receive,
and (subject to Section 601) shall be fully protected in relying upon, in
addition to the documents required by Section 103, an Opinion of Counsel and an
Officers' Certificate, each stating that the execution of such supplemental
indenture is authorized or permitted by this Indenture and, with respect to
supplemental indentures under Section 902 hereof, evidence of the consents of
Holders required in connection therewith. The

                                       60
<PAGE>

Trustee may, but shall not be obligated to, enter into any such supplemental
indenture which affects the Trustee's own rights, duties or immunities under
this Indenture or otherwise.

         SECTION 904. EFFECT OF SUPPLEMENTAL INDENTURES.

         Upon the execution of any supplemental indenture under this Article
with respect to one or more series of Securities, this Indenture shall be
modified in accordance therewith, and such supplemental indenture shall form a
part of this Indenture for all purposes; and every Holder of Securities of such
series theretofore or thereafter authenticated and delivered hereunder shall be
bound thereby.

         SECTION 905. REVOCATION AND EFFECT OF CONSENTS.

         Until an amendment or supplement under this Article or a waiver under
this Article becomes effective, a consent to it by a Holder of a Security is a
continuing consent by the Holder and every subsequent Holder of a Security or
portion of a Security that evidences the same debt as the consenting Holder's
Security, even if notation of the consent is not made on any Security. However,
any such Holder or subsequent Holder may revoke the consent as to his Security
or portion of a Security if the Trustee receives the notice of revocation before
the date the amendment, supplement or waiver becomes effective.

         After an amendment or supplement becomes effective, it shall bind every
Holder.

         SECTION 906. CONFORMITY WITH TRUST INDENTURE ACT.

         Every supplemental indenture executed pursuant to this Article shall
conform to the requirements of the Trust Indenture Act.

         SECTION 907. REFERENCE IN SECURITIES TO SUPPLEMENTAL INDENTURES.

         Securities of any series authenticated and delivered after the
execution of any supplemental indenture pursuant to this Article may, and shall
if required by the Trustee, bear a notation in form approved by the Trustee as
to any matter provided for in such supplemental indenture. If the Company shall
so determine, new Securities of any series so modified as to conform, in the
opinion of the Trustee and the Company, to any such supplemental indenture may
be prepared and executed by the Company and authenticated and delivered by the
Trustee in exchange for Outstanding Securities of such series.

         SECTION 908. WAIVER OF COMPLIANCE BY HOLDERS.

         Anything in this Indenture to the contrary notwithstanding, any of the
acts which the Company is required to do, or is prohibited from doing, by any of
the provisions of this Indenture may, to the extent that such provisions might
be changed or eliminated by a supplemental indenture pursuant to Section 902
upon consent of Holders of not less than a majority in aggregate principal
amount of the then Outstanding Securities of the series affected, be omitted or
done by the Company, if there is obtained the prior consent or waiver of the

                                       61
<PAGE>

Holders of at least a majority in aggregate principal amount of the then
Outstanding Securities of such series.

         SECTION 909. NOTICE OF SUPPLEMENTAL INDENTURE.

         Promptly after the execution by the Company, any Guarantor and the
Trustee of any supplemental indenture pursuant to the provisions of Section 902,
the Company shall give notice thereof to the Holders of each Outstanding
Security affected, in the manner provided for in Section 106, setting forth in
general terms the substance of such supplemental indenture.

         SECTION 910. SUBORDINATION UNIMPAIRED.

         No provision in any supplemental indenture that affects the superior
position of the holders of Senior Debt shall be effective against holders of
Senior Debt.

                                   ARTICLE TEN

                                    COVENANTS

         SECTION 1001. PAYMENT OF PRINCIPAL, PREMIUM AND INTEREST.

         The Company shall pay the principal of and premium, if any, and
interest, if any, on the Securities on the dates and in the manner provided in
the Securities and in this Indenture. Principal, premium, if any, and interest,
if any, shall be considered paid on the date due if the Paying Agent, other than
the Company or a Subsidiary of the Company, holds by 11:00 a.m., Eastern time,
on that date money deposited by or on behalf of the Company designated for and
sufficient to pay all principal, premium, if any, and interest, if any, then
due.

         To the extent lawful, the Company shall pay interest (including
post-petition interest in any proceeding under any Bankruptcy Law) on overdue
principal, premium, if any, and interest, if any, (without regard to any
applicable grace period) at a rate equal to the then applicable interest rate on
the Securities.

         SECTION 1002. MAINTENANCE OF OFFICE OR AGENCY.

         So long as any Securities are Outstanding, the Company will maintain in
each Place of Payment for any series of Securities an office or agency where
Securities of that series may be presented or surrendered for payment, where
Securities of that series may be surrendered for registration of transfer or
exchange, where Securities of that series may be surrendered for conversion and
where notices and demands to or upon the Company in respect of the Securities of
that series and this Indenture may be served. The Company will give prompt
written notice to the Trustee of the location, and any change in the location,
of such office or agency. If at any time the Company shall fail to maintain any
such required office or agency or shall fail to furnish the Trustee with the
address thereof, such presentations, surrenders, notices and demands may be made
or served at the Corporate Trust Office of the Trustee, and the Company hereby
appoints the Trustee as its agent to receive all such presentations, surrenders,
notices and demands.

                                       62
<PAGE>

         The Company may also from time to time designate one or more other
offices or agencies where the Securities of one or more series may be presented
or surrendered for any or all such purposes and may from time to time rescind
such designations; provided, however, that no such designation or rescission
shall in any manner relieve the Company of its obligation to maintain an office
or agency in each Place of Payment for Securities of any series for such
purposes. The Company will give prompt written notice to the Trustee of any such
designation or rescission and of any change in the location of any such other
office or agency.

         SECTION 1003. COMMISSION REPORTS; FINANCIAL STATEMENTS.

                  (a) The Company covenants and agrees or, if there is a
         Guarantee, each Guarantor covenants and agrees to file with the Trustee
         copies, within 15 days after the Company or any Guarantor is required
         to file the same with the Commission, of the annual reports and of the
         information, documents and other reports (or copies of such portions of
         any of the foregoing as the Commission may from time to time by rules
         and regulations prescribe) which the Company or any Guarantor may be
         required to file with the Commission pursuant to Section 13 or Section
         15(d) of the Exchange Act; or, if the Company or any Guarantor (as
         applicable) is not required to file information, documents or reports
         pursuant to either of such sections, then to file with the Trustee and
         the Commission, in accordance with rules and regulations prescribed
         from time to time by the Commission, such of the supplementary and
         periodic information, documents and reports, if any, which may be
         required pursuant to Section 13 of the Exchange Act, in respect of a
         security listed and registered on a national securities exchange as may
         be prescribed from time to time in such rules and regulations.

                  (b) The Company covenants and agrees or, if there is a
         Guarantee, each Guarantor covenants and agrees, to file with the
         Trustee and the Commission, in accordance with the rules and
         regulations prescribed from time to time by the Commission, such
         additional information, documents and reports, if any, with respect to
         compliance by the Company or any Guarantor (as applicable) with the
         conditions and covenants provided for in this Indenture as may be
         required from time to time by such rules and regulations.

         SECTION 1004. COMPLIANCE CERTIFICATE.

         The Company and any Guarantor shall deliver to the Trustee, within 120
days after the end of each fiscal year of the Company, a statement signed by two
officers of the Company (one of whom shall be the Chief Executive Officer, Chief
Financial Officer or Chief Accounting Officer of the Company) and two officers
of each Guarantor (one of whom shall be the Chief Executive Officer, Chief
Financial Officer or Chief Accounting Officer of each Guarantor), which
statement need not constitute an Officers' Certificate, stating that in the
course of performance by the signing officers of the Company and officers of any
Guarantor of their duties as such officers, they would normally obtain knowledge
of the keeping, observing, performing and fulfilling by the Company and any
Guarantor, respectively, of their obligations under this Indenture, and further
stating, as to each such officer signing such statement, that to the best of

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his knowledge, each of the Company and any Guarantor has kept, observed,
performed and fulfilled each and every covenant applicable to it contained in
this Indenture and is not in default in the performance or observance of any of
the terms, provisions and conditions hereof applicable to it (or, if a Default
or Event of Default shall have occurred, describing all such Defaults or Events
of Default of which such officer may have knowledge and what action the Company
or any Guarantor, as the case may be, is taking or proposes to take with respect
thereto).

         SECTION 1005. CORPORATE EXISTENCE.

         Subject to Article Eight, each of the Company and any Guarantor will do
or cause to be done all things necessary to preserve and keep in full force and
effect its corporate existence, under the laws of its respective jurisdiction of
incorporation or formation.

         SECTION 1006. MONEY FOR SECURITIES PAYMENTS TO BE HELD IN TRUST.

         If the Company shall at any time act as its own Paying Agent with
respect to any series of Securities, it will, on or before each due date of the
principal, premium, if any, or interest, if any, on any of the Securities of
that series, segregate and hold in trust for the benefit of the Persons entitled
thereto a sum sufficient to pay the principal, premium, if any, and interest, if
any, so becoming due until such sums shall be paid to such Persons or otherwise
disposed of as herein provided and will promptly notify the Trustee of its
action or failure so to act.

         Whenever the Company shall have one or more Paying Agents for any
series of Securities, it will, prior to each due date of the principal, premium,
if any, or interest, if any, on any Securities of that series, deposit with a
Paying Agent a sum sufficient to pay such amount, such sum to be held as
provided by the Trust Indenture Act, and (unless such Paying Agent is the
Trustee) the Company will promptly notify the Trustee of its action or failure
so to act.

         The Company will cause each Paying Agent for any series of Securities
other than the Trustee to execute and deliver to the Trustee an instrument in
which such Paying Agent shall agree with the Trustee, subject to the provisions
of this Section, that such Paying Agent will (i) comply with the provisions of
the Trust Indenture Act applicable to it as a Paying Agent and (ii) during the
continuance of any default by the Company (or any other obligor upon the
Securities of that series) in the making of any payment in respect of the
Securities of that series, and upon the written request of the Trustee,
forthwith pay to the Trustee all sums held in trust by such Paying Agent for
payment in respect of the Securities of that series.

         The Company and any Guarantor (if applicable) may at any time, for the
purpose of obtaining the satisfaction and discharge of this Indenture or for any
other purpose, pay, or by Company Order direct any Paying Agent to pay, to the
Trustee all sums held in trust by the Company or such Paying Agent, such sums to
be held by the Trustee upon the same terms as those upon which such sums were
held by the Company or such Paying Agent; and, upon such payment by any Paying
Agent to the Trustee, such Paying Agent shall be released from all further
liability with respect to such money.

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<PAGE>

         Any money deposited with the Trustee or any Paying Agent, or then held
by the Company, in trust for the payment of the principal, premium, if any, or
interest, if any, on any Security of any series and remaining unclaimed for two
years after such principal, premium, if any, or interest, if any, has become due
and payable shall be paid to the Company on Company Request, or (if then held by
the Company) shall be discharged from such trust; and the Holder of such
Security shall thereafter, as an unsecured general creditor, look only to the
Company for payment thereof, and all liability of the Trustee or such Paying
Agent with respect to such trust money, and all liability of the Company as
trustee thereof, shall thereupon cease; provided, however, that the Trustee or
such Paying Agent, before being required to make any such repayment, may at the
request and expense of the Company cause to be published once, in a newspaper
published in the English language, customarily published on each Business Day
and of general circulation in the Borough of Manhattan, the City of New York,
notice that such money remains unclaimed and that, after a date specified
therein, which shall not be less than 30 days from the date of such publication,
any unclaimed balance of such money then remaining will be repaid to the
Company.

         SECTION 1007. WAIVER OF CERTAIN COVENANTS.

         The Company or any Guarantor (as applicable) may omit in any particular
instance to comply with any term, provision or condition set forth in Section
1005 with respect to the Securities of any series if before the time for such
compliance the Holders of at least a majority in aggregate principal amount of
the Outstanding Securities of all affected series (voting as one class) shall,
by Act of such Holders, either waive such compliance in such instance or
generally waive compliance with such term, provision or condition, but no such
waiver shall extend to or affect such term, provision or condition except to the
extent so expressly waived, and, until such waiver shall become effective, the
obligations of the Company or any Guarantor (as applicable) and the duties of
the Trustee in respect of any such term, provision or condition shall remain in
full force and effect.

         A waiver which changes or eliminates any term, provision or condition
of this Indenture which has expressly been included solely for the benefit of
one or more particular series of Securities, or which modifies the rights of the
Holders of Securities of such series with respect to such term, provision or
condition, shall be deemed not to affect the rights under this Indenture of the
Holders of Securities of any other series.

                                 ARTICLE ELEVEN

                            REDEMPTION OF SECURITIES

         SECTION 1101. APPLICABILITY OF ARTICLE.

         Securities of any series which are redeemable before their Stated
Maturity shall be redeemable in accordance with their terms and (except as
otherwise specified as contemplated by Section 301 for Securities of any series)
in accordance with this Article.

         SECTION 1102. ELECTION TO REDEEM; NOTICE TO TRUSTEE.

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<PAGE>

         In case of any redemption at the election of the Company of less than
all the Securities of any series, the Company shall, at least 60 days prior to
the Redemption Date fixed by the Company (unless a shorter notice shall be
reasonably satisfactory to the Trustee), notify the Trustee of such Redemption
Date, of the principal amount of Securities of such series to be redeemed, the
specific provision of the Securities of such series pursuant to which such
Securities being called for redemption are being redeemed and, if applicable, of
the tenor of the Securities to be redeemed. In the case of any redemption of
Securities prior to the expiration of any restriction on such redemption
provided in the terms of such Securities or elsewhere in this Indenture, the
Company shall furnish the Trustee with an Officers' Certificate evidencing
compliance with such restriction.

         SECTION 1103. SELECTION BY TRUSTEE OF SECURITIES TO BE REDEEMED.

         If less than all the Securities of any series are to be redeemed
(unless all of the Securities of such series and of a specified tenor are to be
redeemed), the particular Securities to be redeemed shall be selected not more
than 45 days prior to the Redemption Date by the Trustee, from the Outstanding
Securities of such series not previously called for redemption, by such method
as the Trustee shall deem fair and appropriate and which may provide for the
selection for redemption of portions (equal to the minimum authorized
denomination for Securities of that series or any integral multiple thereof) of
the principal amount of Securities of such series of a denomination larger than
the minimum authorized denomination for Securities of that series. If less than
all of the Securities of such series and of a specified tenor are to be
redeemed, the particular Securities to be redeemed shall be selected not more
than 45 days prior to the Redemption Date by the Trustee, from the Outstanding
Securities of such series and specified tenor not previously called for
redemption in accordance with the preceding sentence.

         If any Security selected for partial redemption is converted in part
before termination of the conversion right with respect to the portion of the
Security so selected, the converted portion of such Security shall be deemed (so
far as may be) to be the portion selected for redemption. Securities which have
been converted during a selection of Securities to be redeemed shall be treated
by the Trustee as Outstanding for the purpose of such selection.

         The Trustee shall promptly notify the Company in writing of the
Securities selected for redemption and, in the case of any Securities selected
for partial redemption, the principal amount thereof to be redeemed.

         For all purposes of this Indenture, unless the context otherwise
requires, all provisions relating to the redemption of Securities shall relate,
in the case of any Securities redeemed or to be redeemed only in part, to the
portion of the principal amount of such Securities which has been or is to be
redeemed.

         SECTION 1104. NOTICE OF REDEMPTION.

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<PAGE>

         Notice of redemption shall be given by first-class mail, postage
prepaid, mailed not less than 15 nor more than 60 days prior to the Redemption
Date, to each Holder of Securities to be redeemed, at its address appearing in
the Security Register.

                  All notices of redemption shall state:

                  (1) the Redemption Date,

                  (2) the Redemption Price and the amount, if any, of any
         accrued and unpaid interest payable on the Redemption Date,

                  (3) if less than all the Outstanding Securities of any series
         are to be redeemed, the identification (and, in the case of partial
         redemption of any Securities, the principal amounts) of the particular
         Securities to be redeemed,

                  (4) that on the Redemption Date the Redemption Price will
         become due and payable upon each such Security to be redeemed and, if
         applicable, that interest thereon will cease to accrue on and after
         said date,

                  (5) if applicable, the conversion price, and that the date on
         which the right to convert the principal of the Securities or the
         portions thereof to be redeemed will terminate will be the Redemption
         Date and the place or places where such Securities may be surrendered
         for conversion,

                  (6) the place or places where such Securities are to be
         surrendered for payment of the Redemption Price, and

                  (7) that the redemption is for a sinking fund, if such is the
         case.

         Notice of redemption of Securities to be redeemed at the election of
the Company shall be given by the Company or, at the Company's request, by the
Trustee in the name and at the expense of the Company.

         SECTION 1105. DEPOSIT OF REDEMPTION PRICE.

         Prior to any Redemption Date, the Company shall deposit with the
Trustee or with a Paying Agent (or, if the Company is acting as its own Paying
Agent, segregate and hold in trust as provided in Section 1006) an amount of
money sufficient to pay the Redemption Price of, and (except if the Redemption
Date shall be an Interest Payment Date) accrued interest on, all the Securities
which are to be redeemed on that date, other than any Securities called for
redemption on that date which have been converted prior to the date of such
deposit.

         If any Security or portion thereof called for redemption is converted,
any money deposited with the Trustee or with any Paying Agent or so segregated
and held in trust for the redemption of such Security or portion thereof shall
(subject to any right of the Holder of such Security or any Predecessor Security
to receive interest as provided in the last paragraph of

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<PAGE>

Section 307) be paid to the Company upon Company Request or, if then held by the
Company, shall be discharged from such trust.

         SECTION 1106. SECURITIES PAYABLE ON REDEMPTION DATE.

         Notice of redemption having been given as aforesaid, the Securities so
to be redeemed shall, on the Redemption Date, become due and payable at the
Redemption Price therein specified, and from and after such date (unless the
Company shall default in the payment of the Redemption Price and accrued
interest) such Securities shall cease to bear interest. Upon surrender of any
such Security for redemption in accordance with said notice, such Security shall
be paid by the Company at the Redemption Price, together with accrued interest
to the Redemption Date; provided, however, that, unless otherwise specified as
contemplated by Section 301, installments of interest whose Stated Maturity is
on or prior to the Redemption Date shall be payable to the Holders of such
Securities, or one or more Predecessor Securities, registered as such at the
close of business on the relevant Record Dates according to their terms and the
provisions of Section 307.

         If any Security called for redemption shall not be so paid upon
surrender thereof for redemption, the principal and premium, if any, shall,
until paid, bear interest from the Redemption Date at the rate prescribed
therefor in the Security.

         SECTION 1107. SECURITIES REDEEMED IN PART.

         Any Security which is to be redeemed only in part shall be surrendered
at a Place of Payment therefor (with, if the Company or the Trustee so requires,
due endorsement by, or a written instrument of transfer in form satisfactory to
the Company and the Trustee duly executed by, the Holder thereof or his attorney
duly authorized in writing), and the Company shall execute, and the Trustee
shall authenticate and deliver to the Holder of such Security without service
charge, a new Security or Securities of the same series and of like tenor, of
any authorized denomination as requested by such Holder, in aggregate principal
amount equal to and in exchange for the unredeemed portion of the principal of
the Security so surrendered.

                                 ARTICLE TWELVE

                            CONVERSION OF SECURITIES

         SECTION 1201. APPLICABILITY OF ARTICLE.

         The provisions of this Article shall be applicable to the Securities of
any series which are convertible into any securities or property of the Company
or an Affiliate of the Company (the "Exchange Securities"), and the issuance of
the Exchange Securities upon the conversion of such convertible Securities,
except as otherwise specified as contemplated by Section 301 for the Securities
of such series.

         SECTION 1202. EXERCISE OF CONVERSION PRIVILEGE.

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<PAGE>

         In order to exercise a conversion privilege, the Holder of a Security
of a series with such a privilege shall surrender such convertible Security to
the Company at the office or agency maintained for that purpose pursuant to
Section 1002, accompanied by written notice to the Company that the Holder
elects to convert such convertible Security or a specified portion thereof. Such
notice shall also state, if different from the name and address of such Holder,
the name or names (with address) in which the certificate or certificates
representing the Exchange Securities which shall be issuable on such conversion
shall be issued. Securities surrendered for conversion shall (if so required by
the Company or the Trustee) be duly endorsed by or accompanied by instruments of
transfer in forms satisfactory to the Company and the Trustee duly executed by
the registered Holder or its attorney duly authorized in writing; and Securities
so surrendered for conversion during the period from the close of business on
any Regular Record Date to the opening of business on the next succeeding
Interest Payment Date (excluding Securities or portions thereof called for
redemption during such period) shall also be accompanied by payment of an amount
equal to the interest payable on such Interest Payment Date on the principal
amount of such Security then being converted, and such interest shall be payable
to such registered Holder notwithstanding the conversion of such Security,
subject to the provisions of Section 307 relating to the payment of Defaulted
Interest by the Company. As promptly as practicable after the receipt of such
notice and of any payment required pursuant to a Board Resolution and, subject
to Section 303, set forth, or determined in the manner provided, in an Officers'
Certificate, or established in one or more indentures supplemental hereto
setting forth the terms of such series of Security, and the surrender of such
Security in accordance with such reasonable procedures as the Company may
prescribe, the Company shall deliver, at the office or agency at which such
Security is surrendered, to such Holder or on its written order, a certificate
or certificates for the number of Exchange Securities issuable upon the
conversion of such convertible Security (or specified portion thereof), in
accordance with the provisions of such Board Resolution, Officers' Certificate
or supplemental indenture, and cash as provided therein in respect of any
fractional Exchange Security otherwise issuable upon such conversion. Such
conversion shall be deemed to have been effected immediately prior to the close
of business on the date on which such notice and such payment, if required,
shall have been received in proper order for conversion by the Company and such
Security shall have been surrendered as aforesaid (unless such Holder shall have
so surrendered such Security and shall have instructed the Company to effect the
conversion on a particular date following such surrender and such Holder shall
be entitled to convert such Security on such date, in which case such conversion
shall be deemed to be effected immediately prior to the close of business on
such date) and at such time the rights of the Holder of such Security as such
Security Holder shall cease and the person or persons in whose name or names any
certificate or certificates representing the Exchange Securities shall be
issuable upon such conversion shall be deemed to have become the Holder or
Holders of record of the Exchange Securities represented thereby. Except as set
forth above and subject to the final paragraph of Section 307, no payment or
adjustment shall be made upon any conversion on account of any interest accrued
on the Securities surrendered for conversion or on account of any dividends, if
applicable, on the Exchange Securities issued upon such conversion.

         In the case of any Security which is converted in part only, upon such
conversion the Company shall execute and the Trustee shall authenticate and
deliver to or on the order of the Holder thereof, at the expense of the Company,
a new Security or Securities of the same series,

                                       69
<PAGE>

of authorized denominations, in aggregate principal amount equal to the
unconverted portion of such Security.

         SECTION 1203. NO FRACTIONAL SHARES.

         No fractional Exchange Security shall be issued upon conversions of
Securities of any series. If more than one Security shall be surrendered for
conversion at one time by the same Holder, the number of full Exchange
Securities which shall be issuable upon conversion shall be computed on the
basis of the aggregate principal amount of the Securities (or specified portions
thereof to the extent permitted hereby) so surrendered. If, except for the
provisions of this Section 1203, any Holder of a Security or Securities would be
entitled to a fractional Exchange Security upon the conversion of such
convertible Security or Securities, or specified portions thereof, the Company
shall pay to such Holder an amount in cash equal to the current market value of
such fractional share computed, (i) if such Exchange Security is listed or
admitted to unlisted trading privileges on a national securities exchange, on
the basis of the last reported sale price regular way on such exchange on the
last trading day prior to the date of conversion upon which such a sale shall
have been effected, or (ii) if such Exchange Security is not at the time so
listed or admitted to unlisted trading privileges on a national securities
exchange, on the basis of the average of the bid and asked prices of such
Exchange Security in the over-the-counter market, on the last trading day prior
to the date of conversion, as reported by the National Quotation Bureau,
Incorporated or similar organization if the National Quotation Bureau,
Incorporated is no longer reporting such information, or, if not so available,
the fair market price as determined by the Board of Directors. For purposes of
this Section, "trading day" shall mean each Monday, Tuesday, Wednesday, Thursday
and Friday other than any day on which the Exchange Security is not traded on a
national exchange, or if the Exchange Security is not traded on a national
exchange, on the principal exchange or market on which the Exchange Security is
traded or quoted.

         SECTION 1204. ADJUSTMENT OF CONVERSION PRICE.

         The conversion price of Securities of any series that is convertible
into Exchange Securities shall be adjusted, if applicable, for any stock
dividends, stock splits, reclassification, combinations or similar transactions
in accordance with the term of the supplemental indenture or Board Resolutions
setting forth the terms of the Securities of such series.

         Whenever the conversion price is adjusted, the Company shall compute
the adjusted conversion price in accordance with terms of the applicable Board
Resolution or supplemental indenture and shall prepare an Officers' Certificate
setting forth the adjusted conversion price and showing in reasonable detail the
facts upon which such adjustment is based, and such certificate shall forthwith
be filed at each office or agency maintained for the purpose of conversion of
Securities pursuant to Section 1002 and, if different, with the Trustee. The
Company shall forthwith cause a notice setting forth the adjusted conversion
price to be mailed, first class postage prepaid, to each Holder of Securities of
such series at its address appearing on the Security Register and to any
conversion agent other than the Trustee.

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<PAGE>

         To the extent permitted by applicable law, the Company may from time to
time increase, in one or more increments, the amount of Exchange Securities
issuable upon conversion of a Security ("Conversion Rate") by any amount for any
period of time if the period is at least 20 Business Days, the increase is
irrevocable during the period and the Board of Directors shall have made a
determination that such increase would be in the best interests of the Company,
which determination shall be conclusive. Subsequent to any such increase, the
Company may from time to time lower the Conversion Rate to any rate that is not
lower than the Conversion Rate that would have been applicable had any such
increase not occurred, if the Board of Directors has determined that the
decrease would be in the best interests of the Company. Whenever the Conversion
Rate is changed pursuant to this Section, the Company shall mail to Holders and
file with the Trustee and any applicable conversion agent a notice of such
increase. The Company shall mail such notice at least seven days before the date
the increased or decreased Conversion Rate takes effect. The notice shall state
the increased or decreased Conversion Rate and the period it will be in effect.

         SECTION 1205. NOTICE OF CERTAIN CORPORATE ACTIONS.

         In case:

                  (a) the Company or an Affiliate of the Company, as the case
         may be, shall declare, if applicable, a dividend (or any other
         distribution) on the Exchange Securities payable otherwise than in cash
         out of its retained earnings (other than a dividend for which approval
         of any stockholders of the Company or an Affiliate of the Company, as
         the case may be, is required); or

                  (b) the Company or an Affiliate of the Company, as the case
         may be, shall authorize, if applicable, the granting to the holders of
         the Exchange Securities of rights, options or warrants to subscribe for
         or purchase any shares of capital stock of any class or of any other
         rights (other than any such grant for which approval of any
         stockholders of the Company or an Affiliate of the Company, as the case
         may be, is required); or

                  (c) of any reclassification of the Exchange Securities (other
         than a subdivision or combination of the Exchange Securities, if
         applicable, or of any consolidation, merger or share exchange to which
         the Company or an Affiliate of the Company, as the case may be, is a
         party and for which approval of any stockholders of the Company or an
         Affiliate of the Company, as the case may be, is required), or of the
         sale of all or substantially all of the assets of the Company or an
         Affiliate of the Company which has issued the Exchange Securities; or

                  (d) of the voluntary or involuntary dissolution, liquidation
         or winding up of the Company or of an Affiliate of the Company which
         has issued the Exchange Securities;

then the Company shall cause to be filed with the Trustee, and shall cause to be
mailed to all Holders at their last addresses as they shall appear in the
Securities Register, at least 20 days (or 10 days in any case specified in
clause (a) or (b) above) prior to the applicable record date hereinafter
specified, a notice stating (i) the date on which a record is to be taken for
the purpose

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<PAGE>

of such dividend, distribution, rights, options or warrants, or, if a record is
not to be taken, the date as of which the holders of Exchange Securities of
record to be entitled to such dividend, distribution, rights, options or
warrants are to be determined, or (ii) the date on which such reclassification,
consolidation, merger, share exchange, sale, dissolution, liquidation or winding
up is expected to become effective, and the date as of which it is expected that
holders of Exchange Securities shall be entitled to exchange their Exchange
Securities for securities, cash or other property deliverable upon such
reclassification, consolidation, merger, share exchange, sale, dissolution,
liquidation or winding up. If at any time the Trustee shall not be the
conversion agent, a copy of such notice shall also forthwith be filed by the
Company with the Trustee.

         SECTION 1206. RESERVATION OF EXCHANGE SECURITIES.

         The Company or an Affiliate of the Company, as the case may be, shall
at all times reserve and keep available, free from preemptive rights, out of its
authorized but unissued Exchange Securities, for the purpose of effecting the
conversion of Securities, the full number of Exchange Securities then issuable
upon the conversion of all outstanding Securities of any series that has
conversion rights.

         SECTION 1207. PAYMENT OF CERTAIN TAXES UPON CONVERSION.

         The Company will pay any and all taxes that may be payable in respect
of the issue or delivery of the Exchange Securities on conversion of Securities
pursuant hereto. The Company shall not, however, be required to pay any tax
which may be payable in respect of any transfer involved in the issue and
delivery of the Exchange Securities in a name other than that of the Holder of
the Security or Securities to be converted, and no such issue or delivery shall
be made unless and until the Person requesting such issue has paid to the
Company the amount of any such tax, or has established, to the satisfaction of
the Company, that such tax has been paid.

         SECTION 1208. NONASSESSABILITY.

         The Company covenants that all Exchange Securities which may be issued
upon conversion of Securities will upon issue in accordance with the terms
hereof, if applicable, be duly and validly issued and fully paid and
nonassessable.

         SECTION 1209. EFFECT OF CONSOLIDATION OR MERGER ON CONVERSION
         PRIVILEGE.

         In case of any consolidation of the company issuing the Exchange
Securities (the "Issuing Company") with, or merger of the Issuing Company into
or with any other Person, or in case of any sale of all or substantially all of
the assets of the Issuing Company, the Issuing Company or the Person formed by
such consolidation or the Person into which the Issuing Company shall have been
merged or the Person which shall have acquired such assets, as the case may be,
shall execute and deliver to the Trustee a supplemental indenture in accordance
with Section 901 providing that the Holder of each Security then outstanding of
any series that is convertible into the Exchange Securities shall have the
right, which right shall be the exclusive conversion right thereafter available
to said Holder (until the expiration of the conversion right of such Security),
to convert such Security into the kind and amount of shares of stock or other
securities or

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<PAGE>

property (including cash) receivable upon such consolidation, merger or sale by
a holder of the number of Exchange Securities into which such Security might
have been converted immediately prior to such consolidation, merger or sale,
subject to compliance with the other provisions of this Indenture, such Security
and such supplemental indenture. Such supplemental indenture shall provide for
adjustments which shall be as nearly equivalent as may be practicable to the
adjustments provided for in such Security. The above provisions of this Section
shall similarly apply to successive consolidations, mergers or sales. It is
expressly agreed and understood that anything in this Indenture to the contrary
notwithstanding, if, pursuant to such merger, consolidation or sale, holders of
outstanding Exchange Securities do not receive shares of common stock of the
surviving corporation but receive other securities, cash or other property or
any combination thereof, Holders of Securities shall not have the right to
thereafter convert their Securities into common stock of the surviving
corporation or the corporation which shall have acquired such assets, but
rather, shall have the right upon such conversion to receive the other
securities, cash or other property receivable by a holder of the number of the
Exchange Securities into which the Securities held by such holder might have
been converted immediately prior to such consolidation, merger or sale, all as
more fully provided in the first sentence of this Section 1209. Anything in this
Section 1209 to the contrary notwithstanding, the provisions of this Section
1209 shall not apply to a merger or consolidation of another corporation with or
into the Issuing Company pursuant to which both of the following conditions are
applicable: (i) the Issuing Company is the surviving corporation and (ii) the
outstanding Exchange Securities are not changed or converted into any other
securities or property (including cash) or changed in number or character or
reclassified pursuant to the terms of such merger or consolidation.

         As evidence of the kind and amount of shares of stock or other
securities or property (including cash) into which Securities may properly be
convertible after any such consolidation, merger or sale, or as to the
appropriate adjustments of the conversion prices applicable with respect
thereto, the Trustee shall be furnished with and may accept the certificate or
opinion of an independent certified public accountant with respect thereto; and,
in the absence of bad faith on the part of the Trustee, the Trustee may
conclusively rely thereon, and shall not be responsible or accountable to any
Holder of Securities for any provision in conformity therewith or approved by
such independent certified accountant which may be contained in said
supplemental indenture.

         SECTION 1210. DUTIES OF TRUSTEE REGARDING CONVERSION.

         Neither the Trustee nor any conversion agent shall at any time be under
any duty or responsibility to any Holder of Securities of any series that is
convertible into Exchange Securities to determine whether any facts exist which
may require any adjustment of the conversion price, or with respect to the
nature or extent of any such adjustment when made, or with respect to the method
employed, whether herein or in any supplemental indenture, any resolutions of
the Board of Directors or written instrument executed by one or more officers of
the Company provided to be employed in making the same. Neither the Trustee nor
any conversion agent shall be accountable with respect to the validity or value
(or the kind or amount) of any Exchange Securities, or of any securities or
property, which may at any time be issued or delivered upon the conversion of
any Securities and neither the Trustee nor any conversion agent makes any
representation with respect thereto. Subject to the provisions of

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<PAGE>

Section 601, neither the Trustee nor any conversion agent shall be responsible
for any failure of the Company to issue, transfer or deliver any Exchange
Securities or other securities or property upon the surrender of any Security
for the purpose of conversion or to comply with any of the covenants of the
Company contained in this Article Twelve or in the applicable supplemental
indenture, resolutions of the Board of Directors or written instrument executed
by one or more duly authorized officers of the Company.

         SECTION 1211. REPAYMENT OF CERTAIN FUNDS UPON CONVERSION.

         Any funds which at any time shall have been deposited by the Company or
on its behalf with the Trustee or any other paying agent for the purpose of
paying the principal of, and premium, if any, and interest, if any, on any of
the Securities (including funds deposited for the sinking fund referred to in
Article Three hereof) and which shall not be required for such purposes because
of the conversion of such Securities as provided in this Article Twelve shall
after such conversion be repaid to the Company by the Trustee upon the Company's
written request by Company Request.

                                ARTICLE THIRTEEN

                       DEFEASANCE AND COVENANT DEFEASANCE

         SECTION 1301. COMPANY'S OPTION TO EFFECT DEFEASANCE OR COVENANT
         DEFEASANCE.

         The Company may elect, at any time, to have either Section 1302 or
Section 1303 applied to the Outstanding Securities of any series, upon
compliance with the conditions set forth below in this Article Thirteen.

         SECTION 1302. DEFEASANCE AND DISCHARGE.

         Upon the Company's exercise of the option provided in Section 1301 to
have this Section 1302 applied to the Outstanding Securities of any series, the
Company and any Guarantor (if applicable) shall be deemed to have been
discharged from their obligations, and the provisions of Article Seventeen shall
cease to be effective, with respect to the Outstanding Securities of such series
as provided in this Section on and after the date the conditions set forth in
Section 1304 are satisfied (hereinafter called "Defeasance"). For this purpose,
such Defeasance means that the Company and any Guarantor (if applicable) shall
be deemed to have paid and discharged the entire indebtedness represented by the
Outstanding Securities of such series and to have satisfied all its other
obligations under the Securities and the Guarantee (if applicable) of such
series and this Indenture insofar as the Securities of such series are concerned
(and the Trustee, at the expense of the Company, shall execute proper
instruments acknowledging the same), subject to the following which shall
survive until otherwise terminated or discharged hereunder: (1) the rights of
Holders of Securities of such series to receive, solely from the trust fund
described in Section 1304 and as more fully set forth in such Section, payments
in respect of the principal, premium, if any, and interest, if any, on such
Securities of such series when payments are due, (2) the Company's and any
Guarantor's (if applicable) obligations with respect to the Securities of such
series under Sections 304, 305, 306, 1002 and 1006 and Article Sixteen, (3) the
rights,

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powers, trusts, duties and immunities of the Trustee hereunder, including,
without limitation, its rights under Section 607 and (4) this Article Thirteen.
Subject to compliance with this Article Thirteen, the Company may exercise its
option provided in Section 1301 to have this Section 1302 applied to the
Outstanding Securities of any series notwithstanding the prior exercise of its
option provided in Section 1301 to have Section 1303 applied to the Outstanding
Securities of such series.

         SECTION 1303. COVENANT DEFEASANCE.

         Upon the Company's exercise of the option provided in Section 1301 to
have this Section 1303 applied to the Outstanding Securities of any series, (1)
the Company and any Guarantor (if applicable) shall be released from their
obligations under Section 801, (2) the occurrence of any event specified in
Sections 501(3) and 501(4) (with respect to Section 801) shall be deemed not to
be or result in an Event of Default and (3) the provisions of Article Seventeen
shall cease to be effective, in each case with respect to the Outstanding
Securities of such series as provided in this Section on and after the date the
conditions set forth in Section 1304 are satisfied (hereinafter called "Covenant
Defeasance"). For this purpose, such Covenant Defeasance means that the Company
may omit to comply with and shall have no liability in respect of any term,
condition or limitation set forth in any such specified Section (to the extent
so specified in the case of Section 501(4)), whether directly or indirectly by
reason of any reference elsewhere herein to any such Section or by reason of any
reference in any such Section to any other provision herein or in any other
document, but the remainder of this Indenture and the Securities of such series
shall be unaffected thereby.

         SECTION 1304. CONDITIONS TO DEFEASANCE OR COVENANT DEFEASANCE.

         The following shall be the conditions to application of either Section
1302 or Section 1303 to the Outstanding Securities of any series:

                  (1) The Company shall elect by Board Resolution to effect a
         Defeasance pursuant to Section 1302 or a Covenant Defeasance pursuant
         to Section 1303 with respect to the Outstanding Securities of any
         series specified in such Board Resolution (the "Defeasible Series").

                  (2) The Company shall irrevocably have deposited or caused to
         be deposited with the Trustee (or another trustee that satisfies the
         requirements contemplated by Section 609 and agrees to comply with the
         provisions of this Article Thirteen applicable to it) as trust funds in
         trust for the purpose of making the following payments, specifically
         pledged as security for, and dedicated solely to, the benefit of the
         Holders of Outstanding Securities of such series, (i) money in an
         amount, or (ii) U.S. Government Obligations that through the scheduled
         payment of principal and interest in respect thereof in accordance with
         their terms will provide, not later than one day before the due date of
         any payment, money in an amount, or (iii) a combination thereof, in
         each case sufficient, in the opinion of a nationally recognized firm of
         independent public accountants expressed in a written certification
         thereof delivered to the Trustee, to pay and discharge, and which shall
         be applied by the Trustee (or any such other qualifying trustee) to pay

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         and discharge, the principal of and any premium and interest on the
         Securities of such series on the respective Stated Maturities, in
         accordance with the terms of this Indenture and the Securities of such
         series. As used herein, "U.S. Government Obligation" means (x) any
         security that is (i) a direct obligation of the United States of
         America for the payment of which full faith and credit of the United
         States of America is pledged or (ii) an obligation of a Person
         controlled or supervised by and acting as an agency or instrumentality
         for the United States of America the payment of which is
         unconditionally guaranteed as a full faith and credit obligation by the
         United States of America, which, in either case (i) or (ii), is not
         callable or redeemable at the option of the issuer thereof, and (y) any
         depositary receipt issued by a bank (as defined in Section 3(a)(2) of
         the Securities Act of 1933, as amended) as custodian with respect to
         any specific payment of principal of or interest on any such U.S.
         Government Obligation specified in Clause (x) and held by such
         custodian for the account of the holder of such depositary receipt, or
         with respect to any specific payment of principal of or interest on any
         such U.S. Government Obligation; provided that (except as required by
         law) such custodian is not authorized to make any deduction from the
         amount payable to the Holder of such depositary receipt from any amount
         received by the custodian in respect of the U.S. Government Obligation
         or the specific payment of principal or interest evidenced by such
         depositary receipt.

                  (3) In the case of an election under Section 1302, the Company
         shall have delivered to the Trustee an Opinion of Counsel stating that
         (i) the Company has received from, or there has been published by, the
         Internal Revenue Service, a ruling or (ii) since the date hereof, there
         has been a change in the applicable U.S. Federal income tax law, in
         case of either (i) or (ii) to the effect that, and based thereon such
         opinion shall confirm that, the Holders of such Securities will not
         recognize gain or loss for U.S. Federal income tax purposes as a result
         of the deposit, Defeasance and discharge to be effected with respect to
         the Securities of such series and will be subject to U.S. Federal
         income tax on the same amount, in the same manner and at the same times
         as would be the case if such deposit, Defeasance and discharge were not
         to occur.

                  (4) In the case of an election under Section 1303, the Company
         shall have delivered to the Trustee an Opinion of Counsel to the effect
         that the Holder of the Outstanding Securities of such series will not
         recognize gain or loss for U.S. Federal income tax purposes as result
         of the deposit and Covenant Defeasance to be effected with respect to
         the Securities of such series and will be subject to U.S. Federal
         income tax on the same amount, in the same manner and at the same times
         as would be the case if such deposit and Covenant Defeasance were not
         to occur.

                  (5) The Company shall have delivered to the Trustee an
         Officers' Certificate to the effect that the Securities of such series,
         if then listed on any securities exchange, will not be delisted as a
         result of such deposit.

                  (6) No Event of Default or Default shall have occurred and be
         continuing at the time of such deposit or, with regard to any Event of
         Default or any such event specified in Sections 501(5) and 501(6), at
         any time on or prior to the 90th day after the date of

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<PAGE>

         such deposit (it being understood that this condition shall not be
         deemed satisfied until after such 90th day).

                  (7) The Company shall have delivered to the Trustee an
         Officers' Certificate and an Opinion of Counsel, each stating that all
         conditions precedent with respect to such Defeasance or Covenant
         Defeasance have been complied with.

                  (8) Such Defeasance or Covenant Defeasance shall not result in
         the trust arising from such deposit constituting an investment company
         within the meaning of the Investment Company Act of 1940, as amended,
         unless such trust shall be qualified under such Act or exempt from
         regulation thereunder.

                  (9) At the time of such deposit: (A) no default in the payment
         of principal of (or premium, if any) or interest on any Senior Debt
         shall have occurred and be continuing or (B) no other event of default
         with respect to any Senior Debt shall have occurred and be continuing
         and shall have resulted in such Senior Debt becoming or being declared
         due and payable prior to the date on which it would otherwise have
         become due and payable, or, in the case of either Clause (A) or Clause
         (B) above, each such default or event of default shall have been cured
         or waived or shall have ceased to exist.

         SECTION 1305. DEPOSITED MONEY AND U.S. GOVERNMENT OBLIGATIONS TO BE
         HELD IN TRUST; OTHER MISCELLANEOUS PROVISIONS.

         Subject to the provisions of the last paragraph of Section 1006, all
money and U.S. Government Obligations (including the proceeds thereof) deposited
with the Trustee or other qualifying trustee (solely for purposes of this
Section and Section 1306, the Trustee and any such other trustee are referred to
collectively as the "Trustee") pursuant to Section 1304 in respect of the
Securities of any Defeasible Series shall be held in trust and applied by the
Trustee, in accordance with the provisions of the Securities of such series and
this Indenture, to the payment, either directly or through any such Paying Agent
(including the Company acting as its own Paying Agent) as the Trustee may
determine, to the Holders of Securities of such series, of all sums due and to
become due thereon in respect of principal and any premium and interest, but
money so held in trust need not be segregated from other funds except to the
extent required by law. Money so held in trust shall not be subject to the
provisions of Article Seventeen.

         The Company shall pay and indemnify the Trustee against any tax, fee or
other charge imposed on or assessed against the U.S. Government Obligations
deposited pursuant to Section 1304 or the principal and interest received in
respect thereof other than any such tax, fee or other charge that by law is for
the account of the Holders of Outstanding Securities.

         Anything in this Article Thirteen to the contrary notwithstanding, the
Trustee shall deliver or pay to the Company from time to time upon Company
Request any money or U.S. Government Obligations held by it as provided in
Section 1304 with respect to Securities of any Defeasible Series that, in the
opinion of a nationally recognized firm of independent public accountants
expressed in a written certification thereof delivered to the Trustee, are in
excess of

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the amount thereof that would then be required to be deposited to effect an
equivalent Defeasance or Covenant Defeasance with respect to the Securities of
such series.

         SECTION 1306. REINSTATEMENT.

         If the Trustee or the Paying Agent is unable to apply any money in
accordance with this Article Thirteen with respect to the Securities of any
series by reason of any order or judgment of any court or governmental authority
enjoining, restraining or otherwise prohibiting such application, then the
Company's and any Guarantor's (if applicable) obligations under this Indenture
and the Securities of such series and the Guarantee shall be revived and
reinstated as though no deposit had occurred pursuant to this Article Thirteen
with respect to Securities of such series until such time as the Trustee or
Paying Agent is permitted to apply all money held in trust pursuant to Section
1305 with respect to Securities of such series in accordance with this Article
Thirteen; provided, however, that if the Company makes any payment of principal,
premium, if any, or interest, if any, on any Security of such series following
the reinstatement of its obligations, the Company shall be subrogated to the
rights of the Holders of Securities of such series to receive such payment from
the money so held in trust.

                                ARTICLE FOURTEEN

                                  SINKING FUNDS

         SECTION 1401. APPLICABILITY OF ARTICLE.

         The provisions of this Article shall be applicable to any sinking fund
for the retirement of Securities of a series except as otherwise specified as
contemplated by Section 301 for Securities of such series.

         The minimum amount of any sinking fund payment provided for by the
terms of Securities of any series is herein referred to as a "mandatory sinking
fund payment," and any payment in excess of such minimum amount provided for by
the terms of Securities of any series is herein referred to as an "optional
sinking fund payment." If provided for by the terms of Securities of any series,
the cash amount of any sinking fund payment may be subject to reduction as
provided in Section 1211. Each sinking fund payment shall be applied to the
redemption of Securities of any series as provided for by the terms of
Securities of such series.

         SECTION 1402. SATISFACTION OF SINKING FUND PAYMENTS WITH SECURITIES.

         The Company (1) may deliver Outstanding Securities of a series (other
than any previously called for redemption) and (2) may apply as a credit
Securities of a series which have been converted pursuant to Article Twelve or
Securities of a series which have been acquired or redeemed either at the
election of the Company pursuant to the terms of such Securities or through the
application of permitted optional sinking fund payments pursuant to the terms of
such Securities or otherwise, in each case in satisfaction of all or any part of
any sinking fund payment with respect to the Securities of such series required
to be made pursuant to the terms of such Securities as provided for by the terms
of such series; provided that such Securities have not

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been previously so credited. Such Securities shall be received and credited for
such purpose by the Trustee at the Redemption Price specified in such Securities
for redemption through operation of the sinking fund and the amount of such
sinking fund payment shall be reduced accordingly.

         SECTION 1403. REDEMPTION OF SECURITIES FOR SINKING FUND.

         Not less than 60 days prior to each sinking fund payment date for any
series of Securities, the Company shall deliver to the Trustee an Officers'
Certificate specifying the amount of the next ensuing sinking fund payment for
that series pursuant to the terms of that series, the portion thereof, if any,
which is to be satisfied by payment of cash and the portion thereof, if any,
which is to be satisfied by delivering and crediting Securities of that series
pursuant to Section 1402 and will also deliver to the Trustee any Securities to
be so delivered. Not less than 30 nor more than 60 days before each such sinking
fund payment date the Trustee shall select the Securities to be redeemed upon
such sinking fund payment date in the manner specified in Section 1103 and cause
notice of the redemption thereof to be given in the name of and at the expense
of the Company in the manner provided in Section 1104 and provide a copy thereof
to the Company five (5) days in advance of the mailing thereof. Such notice
having been duly given, the redemption of such Securities shall be made upon the
terms and in the manner stated in Sections 1105, 1106 and 1107.

                                 ARTICLE FIFTEEN

                         REPAYMENT AT OPTION OF HOLDERS

         SECTION 1501. APPLICABILITY OF ARTICLE.

         Repayment of Securities of any series before their Stated Maturity at
the option of Holders thereof shall be made in accordance with the terms of such
Securities and (except as otherwise specified as contemplated by Section 301 for
Securities of any series) in accordance with this Article.

         SECTION 1502. REPAYMENT OF SECURITIES.

         Securities of any series subject to repayment in whole or in part at
the option of the Holders thereof will, unless otherwise provided in the terms
of such Securities, be repaid at a price equal to the principal amount thereof,
together with interest, if any, thereon accrued to the Repayment Date specified
in or pursuant to the terms of such Securities. The Company covenants that on or
before the Repayment Date it will deposit with the Trustee or with a Paying
Agent (or, if the Company is acting as its own Paying Agent, segregate and hold
in trust as provided in Section 1006) an amount of money in the currency in
which the Securities of such series are payable (except as otherwise specified
pursuant to Section 301 for the Securities of such series) sufficient to pay the
principal (or, if so provided by the terms of the Securities of any series, a
percentage of the principal) of, and (except if the Repayment Date shall be an
Interest Payment Date) accrued interest on, all the Securities or portions
thereof, as the case may be, to be repaid on such date.

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         SECTION 1503. EXERCISE OF OPTION.

         Securities of any series subject to repayment at the option of the
Holders thereof will contain an "Option to Elect Repayment" form on the reverse
of such Securities. To be repaid at the option of the Holder, any Security so
providing for such repayment, with the "Option to Elect Repayment" form on the
reverse of such Security duly completed by the Holder (or by the Holder's
attorney duly authorized in writing), must be received by the Company at the
Place of Payment therefor specified in the terms of such Security (or at such
other place or places or which the Company shall from time notify the Holders of
such Securities) not earlier than 45 days nor later than 30 days prior to the
Repayment Date. If less than the entire principal amount of such Security is to
be repaid in accordance with the terms of such Security, the principal amount of
such Security to be repaid, in increments of the minimum denomination for
Securities of such series, and the denomination or denominations of the Security
or Securities to be issued to the Holder for the portion of the principal amount
of such Security surrendered that is not to be repaid, must be specified. The
principal amount of any Security providing for repayment at the option of the
Holder thereof may not be repaid in part if, following such repayment, the
unpaid principal amount of such Security would be less than the minimum
authorized denomination of Securities of the series of which such Security to be
repaid is a part. Except as otherwise may be provided by the terms of any
Security providing for repayment at the option of the Holder thereof, exercise
of the repayment option by the Holder shall be irrevocable unless waived by the
Company.

         SECTION 1504. WHEN SECURITIES PRESENTED FOR REPAYMENT BECOME DUE AND
         PAYABLE.

         If Securities of any series providing for repayment at the option of
the Holders thereof shall have been surrendered as provided in this Article and
as provided by or pursuant to the terms of such Securities, such Securities or
the portions thereof, as the case may be, to be repaid shall become due and
payable and shall be paid by the Company on the Repayment Date therein
specified, and on and after such Repayment Date (unless the Company shall
default in the payment of such Securities on such Repayment Date) such
Securities shall, if the same were interest-bearing, cease to bear interest.
Upon surrender of any such Security for repayment in accordance with such
provisions, the principal amount of such Security so to be repaid shall be paid
by the Company, together with accrued interest, if any, to the Repayment Date;
provided, however, that installments of interest, if any, whose Stated Maturity
is on or prior to the Repayment Date shall be payable to the Holders of such
Securities, or one or more Predecessor Securities, registered as such at the
close of business on the relevant Record Dates according to their terms and the
provisions of Section 307.

         If the principal amount of any Security surrendered for repayment shall
not be so repaid upon surrender thereof, such principal amount (together with
interest, if any, thereon accrued to such Repayment Date) shall, until paid,
bear interest from the Repayment Date at the rate of interest or Yield to
Maturity (in the case of Original Issue Discount Securities) set forth in such
Security.

         SECTION 1505. SECURITIES REPAID IN PART.

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         Upon surrender of any Security which is to be repaid in part only, the
Company shall execute and the Trustee shall authenticate and deliver to the
Holder of such security, without service charge and at the expense of the
Company, a new Security or Securities of the same series, of any authorized
denomination specified by the Holder, in an aggregate principal amount equal to
and in exchange for the portion of the principal of such Security so surrendered
which is not to be repaid.

         This instrument may be executed in any number of counterparts, each of
which so executed shall be deemed to be an original, but all such counterparts
shall together constitute but one and the same instrument.

                                 ARTICLE SIXTEEN

                             GUARANTEE OF SECURITIES

         SECTION 1601. GUARANTEE.

         Any series of Securities may be guaranteed by one or more of the U.S.
Guarantor and any other Guarantor. The terms and the form of any such Guarantee
will be established in the manner contemplated by Section 301 for that
particular series of Securities.

                                ARTICLE SEVENTEEN

                           SUBORDINATION OF SECURITIES

         SECTION 1701. SECURITIES SUBORDINATED TO SENIOR DEBT.

                  (1) The Company, for itself, its successors and assigns,
         covenants and agrees, and each Holder of Securities, by his acceptance
         thereof, likewise covenants and agrees, that the payment of the
         principal of and premium, if any, and interest, if any, on each and all
         of the Securities is hereby expressly subordinated, to the extent and
         in the manner hereinafter set forth, in right of payment to the prior
         payment in full of all Senior Debt of the Company.

                  (2) If (A) the Company shall default in the payment of any
         principal of, premium, if any, or interest, if any, on any Senior Debt
         of the Company when the same becomes due and payable, whether at
         maturity or at a date fixed for prepayment or by declaration of
         acceleration or otherwise, or (B) any other default shall occur with
         respect to Senior Debt of the Company and the maturity of such Senior
         Debt has been accelerated in accordance with its terms, then, upon
         written notice of such default to the Company and the Trustee by the
         holders of Senior Debt of the Company or any trustee therefor, unless
         and until, in either case, the default has been cured or waived or has
         ceased to exist, or, any such acceleration has been rescinded or such
         Senior Debt has been paid in full, no direct or indirect payment (in
         cash, property, securities, by set-off or otherwise) shall be

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<PAGE>

         made or agreed to be made on account of the principal of, premium, if
         any, or interest, if any, on any of the Securities, or in respect of
         any redemption, retirement, purchase or other acquisition of any of the
         Securities other than those made in capital stock of the Company (or
         cash in lieu of fractional shares thereof).

                  (3) If any default occurs (other than a default described in
         paragraph (2) of this Section 1701) under the Senior Debt of the
         Company, pursuant to which the maturity thereof may be accelerated
         immediately without further notice (except such notice as may be
         required to effect such acceleration) or at the expiration of any
         applicable grace periods (a "Senior Nonmonetary Default"), then, upon
         the receipt by the Company and the Trustee of written notice thereof (a
         "Payment Blockage Notice") from or on behalf of holders of such Senior
         Debt of the Company specifying an election to prohibit such payment and
         other action by the Company in accordance with the following provisions
         of this paragraph (3), the Company may not make any payment or take any
         other action that would be prohibited by paragraph (2) of this Section
         1701 during the period (the "Payment Blockage Period") commencing on
         the date of receipt of such Payment Blockage Notice and ending on the
         earlier of (A) the date, if any, on which the holders of such Senior
         Debt or their representative notifies the Trustee that such Senior
         Nonmonetary Default is cured or waived or ceases to exist or the Senior
         Debt to which such Senior Nonmonetary Default relates is discharged or
         (B) the 179th day after the date of receipt of such Payment Blockage
         Notice. Notwithstanding the provisions described in the immediately
         preceding sentence, the Company may resume payments on the Securities
         following such Payment Blockage Period.

         SECTION 1702. DISTRIBUTION ON DISSOLUTION, LIQUIDATION AND
         REORGANIZATION; SUBROGATION OF SECURITIES.

         Upon any distribution of assets of the Company upon any dissolution,
winding up, liquidation or reorganization of the Company, whether in bankruptcy,
insolvency, reorganization or receivership proceedings or upon an assignment for
the benefit of creditors or any other marshalling of the assets and liabilities
of the Company or otherwise (subject to the power of a court of competent
jurisdiction to make other equitable provision reflecting the rights conferred
in this Indenture upon the Senior Debt of the Company and the holders thereof
with respect to the Securities and the Holders thereof by a lawful plan or
reorganization under applicable bankruptcy law),

                  (1) the holders of all Senior Debt of the Company shall be
         entitled to receive payment in full of the principal thereof, premium,
         if any, interest, and any interest thereon, due thereon before the
         Holders of the Securities are entitled to receive any payment upon the
         principal, premium, interest of or on the Securities or interest on
         overdue amounts thereof;

                  (2) any payment or distribution of assets of the Company, any
         Guarantor or any other obligor upon the Securities of any kind or
         character, whether in cash, property or securities, to which the
         Holders of the Securities or the Trustee (on behalf of the Holders)
         would be entitled except for the provisions of this Article Seventeen
         shall be paid by the

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         liquidating trustee or agent or other person making such payment or
         distribution, whether a trustee in bankruptcy, a receiver or
         liquidating trustee or otherwise, directly to the holders of Senior
         Debt of the Company or their representative or representatives or to
         the trustee or trustees under any indenture under which any instruments
         evidencing any of such Senior Debt may have been issued, ratably
         according to the aggregate amounts remaining unpaid on account of the
         principal of, premium, if any, interest, if any, and any interest
         thereon, on the Senior Debt of the Company held or represented by each,
         to the extent necessary to make payment in full of all Senior Debt of
         the Company remaining unpaid, after giving effect to any concurrent
         payment or distribution to the holders of such Senior Debt; and

                  (3) in the event that, notwithstanding the foregoing, any
         payment or distribution of assets of the Company, any Guarantor (if
         applicable) or any other obligor upon the Securities of any kind or
         character, whether in cash, property or securities, shall be received
         by the Trustee (on behalf of the Holders) or the Holders of the
         Securities before all Senior Debt of the Company is paid in full, such
         payment or distribution shall be paid over to the holders of such
         Senior Debt or their representative or representatives or to the
         trustee or trustees under any indenture under which any instruments
         evidencing any of such Senior Debt may have been issued, ratably as
         aforesaid, for application to the payment of all Senior Debt remaining
         unpaid until all such Senior Debt shall have been paid in full, after
         giving effect to any concurrent payment or distribution to the holders
         of such Senior Debt.

         Subject to the payment in full of all Senior Debt of the Company, the
Holders of the Securities shall be subrogated to the rights of the holders of
such Senior Debt to receive payments or distributions of cash, property or
securities of the Company applicable to Senior Debt of the Company until the
principal, premium, interest, and any interest thereon, of or on the Securities
shall be paid in full and no such payments or distributions to the Holders of
the Securities of cash, property or securities otherwise distributable to the
Senior Debt of the Company shall, as between the Company, its creditors other
than the holders of Senior Debt of the Company, and the Holders of the
Securities, be deemed to be a payment by the Company to or on account of the
Securities. It is understood that the provisions of this Article Seventeen are
and are intended solely for the purpose of defining the relative rights of the
Holders of the Securities, on the one hand, and the holders of Senior Debt of
the Company, on the other hand. Nothing contained in this Article Seventeen or
elsewhere in this Indenture or in the Securities is intended to or shall impair,
as between the Company, its creditors other than the holders of Senior Debt of
the Company, and the Holders of the Securities, the obligation of the Company,
which is unconditional and absolute, to pay to the Holders of the Securities the
principal, premium, interest, and any interest thereon, of or on the Securities
as and when the same shall become due and payable in accordance with their
terms, or to affect the relative rights of the Holders of the Securities and
creditors of the Company other than the holders of Senior Debt of the Company,
nor shall anything herein or in the Securities prevent the Trustee or the Holder
of any Security from exercising all remedies otherwise permitted by applicable
law upon default under this Indenture, subject to the rights, if any, under this
Article Seventeen of the holders of such Senior Debt in respect of cash,
property or securities of the Company received upon the exercise of any such
remedy. Upon any payment or distribution of assets of the Company

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referred to in this Article Seventeen, the Trustee shall be entitled to
conclusively rely upon a certificate of the liquidating trustee or agent or
other person making any distribution to the Trustee for the purpose of
ascertaining the persons entitled to participate in such distribution, the
holders of Senior Debt of the Company and other indebtedness of the Company, the
amount thereof or payable thereon, the amount or amounts paid or distributed
thereon, and all other facts pertinent thereto or to this Article Seventeen.

         The Trustee, however, shall not be deemed to owe any fiduciary duty to
the holders of Senior Debt of the Company. The Trustee shall not be liable to
any such holder if it shall pay over or distribute to or on behalf of Holders of
Securities or the Company moneys or assets to which any holder of Senior Debt of
the Company shall be entitled by virtue of this Article Seventeen. The rights
and claims of the Trustee under Section 607 shall not be subject to the
provisions of this Article Seventeen.

         If the Trustee or any Holder of Securities does not file a proper claim
or proof of debt in the form required in any proceeding referred to above prior
to 30 days before the expiration of the time to file such claim in such
proceeding, then the holder of any Senior Debt of the Company is hereby
authorized, and has the right, to file an appropriate claim or claims for or on
behalf of such Holder of Securities.

         SECTION 1703. PAYMENTS ON SECURITIES PERMITTED.

         Nothing contained in this Indenture or in any of the Securities shall
(1) affect the obligation of the Company to make, or prevent the Company from
making, at any time except as provided in Sections 1701 and 1702, payments of
principal, premium, interest, and any interest thereon, of or on the Securities
or (2) prevent the application by the Trustee of any moneys deposited with it
hereunder to the payment of or on account of the principal, premium, interest or
other amounts, and any interest thereon, of or on the Securities unless the
Trustee shall have received at its Corporate Trust Office written notice of any
event prohibiting the making of such payment two Business Days (A) prior to the
date fixed for such payment, (B) prior to the execution of an instrument to
satisfy and discharge this Indenture based upon the deposit of funds, (C) prior
to the execution of an instrument acknowledging the defeasance of such
Securities pursuant to Section 1302 or (D) prior to any deposit pursuant to
clause (1) of Section 1303 with respect to such Securities.

         SECTION 1704. AUTHORIZATION OF HOLDERS OF SECURITIES TO TRUSTEE TO
         EFFECT SUBORDINATION.

         Each Holder of Securities by his acceptance thereof, whether upon
original issue or upon transfer or assignment, authorizes and directs the
Trustee on his behalf to take such action as may be necessary or appropriate to
effectuate the subordination as provided in this Article Seventeen and appoints
the Trustee his attorney-in-fact for any and all such purposes.

         SECTION 1705. NOTICES TO TRUSTEE.

                                       84
<PAGE>

         The Company shall give prompt written notice to a Responsible Officer
of the Trustee located at the Corporate Trust Office of the Trustee of any fact
known to the Company which would prevent the making of any payment to or by the
Trustee in respect of the Securities. Notwithstanding the provisions of this
Article Seventeen or any other provisions of this Indenture, neither the Trustee
nor any Paying Agent (other than the Company) shall be charged with knowledge of
the existence of any Senior Debt of the Company or of any event which would
prohibit the making of any payment of moneys to or by the Trustee or such Paying
Agent, unless and until the Trustee or such Paying Agent shall have received (in
the case of the Trustee, at its Corporate Trust Office) written notice thereof
from the Company or from the holder of any Senior Debt of the Company or from
the trustee for or representative of any Senior Debt of the Company together
with proof satisfactory to the Trustee of such holding of such Senior Debt or of
the authority of such trustee or representative; provided, however, that if at
least two Business Days prior to the date upon which by the terms hereof any
such moneys may become payable for any purpose (including, without limitation,
the payment of the principal, premium, interest, of or on any Security, or any
interest thereon) or the date on which the Trustee shall execute an instrument
acknowledging satisfaction and discharge of this Indenture or the defeasance of
Securities pursuant to Section 1302 or the date on which a deposit pursuant to
clause (1) of Section 1303 is made, the Trustee shall not have received with
respect to such moneys or the moneys deposited with it as a condition to such
satisfaction and discharge or defeasance the notice provided for in this Section
1705, then, anything herein contained to the contrary notwithstanding, the
Trustee shall have full power and authority to receive such moneys and to apply
the same to the purpose for which they were received, and shall not be affected
by any notice to the contrary, which may be received by it on or after such two
Business Days prior to such date. The Trustee shall be entitled to conclusively
rely on the delivery to it of a written notice by a person representing himself
to be a holder of Senior Debt of the Company (or a trustee or representative on
behalf of such holder) to establish that such a notice has been given by a
holder of Senior Debt of the Company or a trustee or representative on behalf of
any such holder. In the event that the Trustee determines in good faith that
further evidence is required with respect to the right of any Person as a holder
of Senior Debt of the Company to participate in any payment or distribution
pursuant to this Article Seventeen, the Trustee may request such Person to
furnish evidence to the reasonable satisfaction of the Trustee as to the amount
of Senior Debt of the Company held by such Person, the extent to which such
Person is entitled to participate in such payment or distribution and any other
facts pertinent to the rights of such Person under this Article Seventeen and,
if such evidence is not furnished, the Trustee may defer any payment to such
Person pending judicial determination as to the right of such Person to receive
such payment.

         SECTION 1706. TRUSTEE AS HOLDER OF SENIOR DEBT.

         The Trustee shall be entitled to all the rights set forth in this
Article Seventeen in respect of any Senior Debt of the Company at any time held
by it to the same extent as any other holder of Senior Debt of the Company and
nothing in this Indenture shall be construed to deprive the Trustee of any of
its rights as such holder.

         SECTION 1707. MODIFICATION OF TERMS OF SENIOR DEBT.

                                       85
<PAGE>

         Any renewal or extension of the time of payment of any Senior Debt of
the Company or the exercise by the holders of Senior Debt of the Company of any
of their rights under any instrument creating or evidencing such Senior Debt,
including without limitation the waiver of default thereunder, may be made or
done all without notice to or assent from Holders of the Securities or the
Trustee.

         No compromise, alteration, amendment, modification, extension, renewal
or other change of, or waiver, consent or other action in respect of, any
liability or obligation under or in respect of, or of any of the terms,
covenants or conditions of any indenture or other instrument under which any
Senior Debt of the Company is outstanding or of such Senior Debt, whether or not
such release is in accordance with the provisions of any applicable document,
shall in any way alter or affect any of the provisions of this Article Seventeen
or of the Securities relating to the subordination thereof.

                                       ***

This instrument may be executed in any number of counterparts, each of which so
executed shall be deemed to be an original, but all such counterparts shall
together constitute but one and the same instrument.

                                       86
<PAGE>

         IN WITNESS WHEREOF, the parties hereto have caused this Indenture to be
duly executed, and their respective corporate seals to be hereunto affixed and
attested, all as of the day and year first above written.

                                                COMPANY:

                                                NABORS INDUSTRIES LTD.

                                                By:
                                                   -----------------------
                                                Name:
                                                Title:

                                                GUARANTOR:

                                                NABORS INDUSTRIES, INC.

                                                By:
                                                   -----------------------
                                                Name:
                                                Title:

                                                TRUSTEE:

                                                BANK ONE, N.A.

                                                By:
                                                   -----------------------
                                                Name:
                                                Title:

                                       87
<PAGE>

STATE OF NEW YORK          )
                           ) ss.:
COUNTY OF NEW YORK         )

                  On the ____ day of _________________, before me personally
came _____________________, to me known, who, being by me duly sworn, did depose
and say that (s)he is __________________ of NABORS INDUSTRIES, INC., one of the
corporations described in and which executed the foregoing instrument; that
(s)he knows the seal of said corporation; that the seal affixed to said
instrument is such corporate seal; that it was so affixed by authority of the
Board of Directors of said corporation, and that (s)he signed her/his name
thereto by like authority.

                                       88
<PAGE>

STATE OF NEW YORK          )
                           ) ss.:
COUNTY OF NEW YORK         )

         On the ____ day of _________________, before me personally came
_____________________, to me known, who, being by me duly sworn, did depose and
say that (s)he is __________________ of NABORS INDUSTRIES LTD., one of the
corporations described in and which executed the foregoing instrument; that
(s)he knows the seal of said corporation; that the seal affixed to said
instrument is such corporate seal; that it was so affixed by authority of the
Board of Directors of said corporation, and that (s)he signed her/his name
thereto by like authority.

                                       89
<PAGE>

STATE OF NEW YORK          )
                           ) ss.:
COUNTY OF NEW YORK         )

                  On the ____ day of ___________________, before me personally
came ________________, to me known, who, being by me duly sworn, did depose and
say that (s)he is ___________________ of BANK ONE, N.A., one of the corporations
described in and which executed the foregoing instrument; that (s)he knows the
seal of said corporation; that the seal affixed to said instrument is such
corporate seal; that it was so affixed by authority of the Board of Directors of
said corporation, and that (s)he signed her/his name thereto by like authority.

                                       90

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