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Exhibit 4(c)



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POTASH CORPORATION OF SASKATCHEWAN INC.

to

THE BANK OF NOVA SCOTIA TRUST COMPANY OF NEW YORK
Trustee



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Indenture

Dated as of February 27, 2003



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Debt Securities



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TABLE OF CONTENTS

|             |  |                                                                 |  |     
|------------ |  | --------------------------------------------------------------- |  | ----
|             |  |                                                                 |  | Page
|             |  |                                                                 |  |     
|             |  | ARTICLE ONE                                                     |  |     
|             |  | DEFINITIONS AND OTHER PROVISIONS OF GENERAL APPLICATION         |  |     
|Section 1.01 |  | Definitions                                                     |  | 1   
|Section 1.02 |  | Compliance Certificates and Opinions                            |  | 12  
|Section 1.03 |  | Form of Documents Delivered to Trustee                          |  | 12  
|Section 1.04 |  | Acts of Holders; Record Dates                                   |  | 13  
|Section 1.05 |  | Notices, etc., to Trustee and PCS                               |  | 14  
|Section 1.06 |  | Notice to Holders; Waiver                                       |  | 14  
|Section 1.07 |  | Conflict with Trust Indenture Act                               |  | 15  
|Section 1.08 |  | Effect of Headings and Table of Contents                        |  | 15  
|Section 1.09 |  | Successors and Assigns                                          |  | 15  
|Section 1.10 |  | Separability Clause                                             |  | 15  
|Section 1.11 |  | Benefits of Indenture                                           |  | 15  
|Section 1.12 |  | Governing Law                                                   |  | 15  
|Section 1.13 |  | Legal Holidays                                                  |  | 15  
|Section 1.14 |  | Immunity of Shareholders, Directors, Officers and Agents of PCS |  | 15  
|Section 1.15 |  | Agent for Service: Submission to Jurisdiction                   |  | 16  
|             |  | ARTICLE TWO                                                     |  |     
|             |  | SECURITIES FORMS                                                |  |     
|Section 2.01 |  | Forms of Securities                                             |  | 16  
|Section 2.02 |  | Form of Trustees Certificate of Authentication                 |  | 17  
|Section 2.03 |  | Securities Issuable in Global Form                              |  | 17  
|             |  | ARTICLE THREE                                                   |  |     
|             |  | THE SECURITIES                                                  |  |     
|Section 3.01 |  | Amount; Issuable in Series                                      |  | 18  
|Section 3.02 |  | Denominations                                                   |  | 21  
|Section 3.03 |  | Executing, Authentication, Delivery and Dating                  |  | 21  

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TABLE OF CONTENTS
(continued)

|             |  |                                                                                                       |  |      |    | 
|------------ |  | ----------------------------------------------------------------------------------------------------- |  | ---- | -- | 
|             |  |                                                                                                       |  | Page
|             |  |                                                                                                       |  |     
|Section 3.04 |  | Temporary Securities                                                                                  |  |      | 22 | 
|Section 3.05 |  | Registration, Registration of Transfer and Exchange                                                   |  |      | 24 | 
|Section 3.06 |  | Mutilated, Destroyed, Lost and Stolen Securities                                                      |  |      | 27 | 
|Section 3.07 |  | Payment of Interest, Interest Rights Preserved                                                        |  |      | 27 | 
|Section 3.08 |  | Persons Deemed Owners                                                                                 |  |      | 29 | 
|Section 3.09 |  | Cancellation                                                                                          |  |      | 29 | 
|Section 3.10 |  | Computation of Interest                                                                               |  |      | 30 | 
|Section 3.11 |  | CUSIP Numbers                                                                                         |  |      | 30 | 
|             |  | ARTICLE FOUR                                                                                          |  |      |    | 
|             |  | SATISFACTION AND DISCHARGE                                                                            |  |      |    | 
|Section 4.01 |  | Satisfaction and Discharge of Indenture                                                               |  |      | 30 | 
|Section 4.02 |  | Application of Trust Funds                                                                            |  |      | 31 | 
|             |  | ARTICLE FIVE                                                                                          |  |      |    | 
|             |  | REMEDIES                                                                                              |  |      |    | 
|Section 5.01 |  | Events of Default                                                                                     |  |      | 32 | 
|Section 5.02 |  | Acceleration of Maturity; Rescission and Annulment                                                    |  |      | 33 | 
|Section 5.03 |  | Collection of Indebtedness and Suits for Enforcement by Trustee                                       |  |      | 34 | 
|Section 5.04 |  | Trustee May File Proofs of Claim                                                                      |  |      | 35 | 
|Section 5.05 |  | Trustee May Enforce Claims Without Possession of Securities                                           |  |      | 36 | 
|Section 5.06 |  | Application of Money Collected                                                                        |  |      | 36 | 
|Section 5.07 |  | Limitation on Suits                                                                                   |  |      | 36 | 
|Section 5.08 |  | Unconditional Right of Holders to Receive Principal,
Premium, if any, Interest and Additional Amounts |  |      | 37 | 
|Section 5.09 |  | Restoration of Rights and Remedies                                                                    |  |      | 37 | 
|Section 5.10 |  | Rights and Remedies Cumulative                                                                        |  |      | 37 | 
|Section 5.11 |  | Delay or Omission Not Waiver                                                                          |  |      | 38 | 
|Section 5.12 |  | Control by Holders of Securities                                                                      |  |      | 38 | 
|Section 5.13 |  | Waiver of Past Defaults                                                                               |  |      | 38 | 
|Section 5.14 |  | Waiver of Usury, Stay or Extension Laws                                                               |  |      | 38 | 

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TABLE OF CONTENTS
(continued)

|             |  |                                                                                                             |  |      |    | 
|------------ |  | ----------------------------------------------------------------------------------------------------------- |  | ---- | -- | 
|             |  |                                                                                                             |  | Page
|             |  |                                                                                                             |  |     
|Section 5.15 |  | Undertaking for Costs                                                                                       |  |      | 39 | 
|             |  | ARTICLE SIX                                                                                                 |  |      |    | 
|             |  | THE TRUSTEE                                                                                                 |  |      |    | 
|Section 6.01 |  | Duties of Trustee                                                                                           |  |      | 39 | 
|Section 6.02 |  | Notice of Defaults                                                                                          |  |      | 40 | 
|Section 6.03 |  | Certain Rights of Trustee                                                                                   |  |      | 40 | 
|Section 6.04 |  | Not Responsible for Recitals or Issuance of Securities                                                      |  |      | 42 | 
|Section 6.05 |  | May Hold Securities                                                                                         |  |      | 42 | 
|Section 6.06 |  | Money Held in Trust                                                                                         |  |      | 42 | 
|Section 6.07 |  | Compensation and Reimbursement                                                                              |  |      | 42 | 
|Section 6.08 |  | Corporate Trustee Required; Eligibility; Conflicting Interests                                              |  |      | 43 | 
|Section 6.09 |  | Resignation and Removal, Appointment of Successor                                                           |  |      | 43 | 
|Section 6.10 |  | Acceptance of Appointment by Successor                                                                      |  |      | 44 | 
|Section 6.11 |  | Merger, Conversion, Consolidation or Succession to Business                                                 |  |      | 45 | 
|Section 6.12 |  | Appointment of Authenticating Agent                                                                         |  |      | 46 | 
|Section 6.13 |  | Preferential Collection of Claims Against the Issuers                                                       |  |      | 47 | 
|             |  | ARTICLE SEVEN                                                                                               |  |      |    | 
|             |  | HOLDERS LISTS AND REPORTS BY TRUSTEE AND PCS                                                               |  |      |    | 
|Section 7.01 |  | Preservation of Information: Communications to Holders                                                      |  |      | 47 | 
|Section 7.02 |  | Disclosure of Names and Addresses of Holders                                                                |  |      | 48 | 
|Section 7.03 |  | Reports by Trustee                                                                                          |  |      | 49 | 
|Section 7.04 |  | Reports by PCS                                                                                              |  |      | 49 | 
|Section 7.05 |  | PCS to Furnish Trustee Names and Addresses of Holders                                                       |  |      | 49 | 
|             |  | ARTICLE EIGHT                                                                                               |  |      |    | 
|             |  | CONSOLIDATION, MERGER, SALE, LEASE OR CONVEYANCE                                                            |  |      |    | 
|Section 8.01 |  | Consolidations and Mergers of PCS and Sales, Leases
and Conveyances Permitted Subject to Certain Conditions |  |      | 50 | 
|Section 8.02 |  | Rights and Duties of Successor Entity                                                                       |  |      | 50 | 
|Section 8.03 |  | Securities to Be Secured in Certain Events                                                                  |  |      | 51 | 

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TABLE OF CONTENTS
(continued)

|              |  |                                                                        |  |      |    | 
|------------- |  | ---------------------------------------------------------------------- |  | ---- | -- | 
|              |  |                                                                        |  | Page
|              |  |                                                                        |  |     
|Section 8.04  |  | Officers Certificate and Opinion of Counsel                           |  |      | 51 | 
|              |  | ARTICLE NINE                                                           |  |      |    | 
|              |  | SUPPLEMENTAL INDENTURES                                                |  |      |    | 
|Section 9.01  |  | Supplemental Indentures Without Consent of Holders                     |  |      | 51 | 
|Section 9.02  |  | Supplemental Indentures with Consent of Holders                        |  |      | 53 | 
|Section 9.03  |  | Execution of Supplemental Indentures                                   |  |      | 54 | 
|Section 9.04  |  | Effect of Supplemental Indentures                                      |  |      | 54 | 
|Section 9.05  |  | Conformity with TIA                                                    |  |      | 54 | 
|Section 9.06  |  | Reference in Securities to Supplemental Indentures                     |  |      | 54 | 
|Section 9.07  |  | Notice of Supplemental Indentures                                      |  |      | 54 | 
|              |  | ARTICLE TEN                                                            |  |      |    | 
|              |  | COVENANTS                                                              |  |      |    | 
|Section 10.01 |  | Payment of Principal, Premium, if any, Interest and
Additional Amounts |  |      | 54 | 
|Section 10.02 |  | Maintenance of Office or Agency                                        |  |      | 54 | 
|Section 10.03 |  | Money for Securities Payments to Be Held in Trust                      |  |      | 55 | 
|Section 10.04 |  | Existence                                                              |  |      | 56 | 
|Section 10.05 |  | Statement as to Compliance                                             |  |      | 57 | 
|Section 10.06 |  | Additional Amounts                                                     |  |      | 57 | 
|Section 10.07 |  | Limitation on Liens                                                    |  |      | 58 | 
|Section 10.08 |  | Limitation on Sale and Leaseback Transactions                          |  |      | 59 | 
|Section 10.09 |  | Waiver of Certain Covenants                                            |  |      | 60 | 
|              |  | ARTICLE ELEVEN                                                         |  |      |    | 
|              |  | REDEMPTION OF SECURITIES                                               |  |      |    | 
|Section 11.01 |  | Applicability of Article                                               |  |      | 60 | 
|Section 11.02 |  | Election to Redeem; Notice to Trustee                                  |  |      | 60 | 
|Section 11.03 |  | Selection by Trustee of Securities Be Redeemed                         |  |      | 60 | 
|Section 11.04 |  | Notice of Redemption                                                   |  |      | 61 | 
|Section 11.05 |  | Deposit of Redemption Price                                            |  |      | 62 | 

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TABLE OF CONTENTS
(continued)

|              |  |                                                                                                |  |      |    | 
|------------- |  | ---------------------------------------------------------------------------------------------- |  | ---- | -- | 
|              |  |                                                                                                |  | Page
|              |  |                                                                                                |  |     
|Section 11.06 |  | Securities Payable on Redemption Date                                                          |  |      | 62 | 
|Section 11.07 |  | Securities Redeemed in Part                                                                    |  |      | 62 | 
|              |  | ARTICLE TWELVE                                                                                 |  |      |    | 
|              |  | SINKING FUNDS                                                                                  |  |      |    | 
|Section 12.01 |  | Applicability of Article                                                                       |  |      | 63 | 
|Section 12.02 |  | Satisfaction of Sinking Fund Payments with Securities                                          |  |      | 63 | 
|Section 12.03 |  | Redemption of Securities for Sinking Fund                                                      |  |      | 63 | 
|              |  | ARTICLE THIRTEEN                                                                               |  |      |    | 
|              |  | REPAYMENT AT THE OPTION OF HOLDERS                                                             |  |      |    | 
|Section 13.01 |  | Applicability of Article                                                                       |  |      | 64 | 
|Section 13.02 |  | Repayment of Securities                                                                        |  |      | 64 | 
|Section 13.03 |  | Exercise of Option                                                                             |  |      | 64 | 
|Section 13.04 |  | When Securities Presented for Repayment Become Due
and Payable `                               |  |      | 65 | 
|Section 13.05 |  | Securities Repaid in Part                                                                      |  |      | 65 | 
|              |  | ARTICLE FOURTEEN                                                                               |  |      |    | 
|              |  | DEFEASANCE AND COVENANT DEFEASANCE                                                             |  |      |    | 
|Section 14.01 |  | Applicability of Article: PCSs Option to Effect
Defeasance or Covenant Defeasance             |  |      | 66 | 
|Section 14.02 |  | Defeasance and Discharge                                                                       |  |      | 66 | 
|Section 14.03 |  | Covenant Defeasance                                                                            |  |      | 67 | 
|Section 14.04 |  | Conditions to Defeasance or Covenant Defeasance                                                |  |      | 67 | 
|Section 14.05 |  | Deposited Money and Government Obligations to Be
Held in Trust; Other Miscellaneous Provisions |  |      | 69 | 
|              |  | ARTICLE FIFTEEN                                                                                |  |      |    | 
|              |  | MEETINGS OF HOLDERS OF SECURITIES                                                              |  |      |    | 
|Section 15.01 |  | Purposes for Which Meetings May Be Called                                                      |  |      | 70 | 
|Section 15.02 |  | Call, Notice and Place of Meetings                                                             |  |      | 70 | 
|Section 15.03 |  | Persons Entitled to Vote at Meetings                                                           |  |      | 70 | 

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TABLE OF CONTENTS
(continued)

|              |  |                                                     |  |      |    | 
|------------- |  | --------------------------------------------------- |  | ---- | -- | 
|              |  |                                                     |  | Page
|              |  |                                                     |  |     
|Section 15.04 |  | Quorum; Action                                      |  |      | 71 | 
|Section 15.05 |  | Determination of Voting Rights; Conduct of Meetings |  |      | 72 | 
|Section 15.06 |  | Counting Votes and Recording Action of Meetings     |  |      | 72 | 

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Reconciliation and tie between the Trust Indenture Act of 1939, as amended, and
certain sections of this Indenture

|                            |       |                   |  |                    |  |  |            |                
|--------------------------- | ----- | ----------------- |  | ------------------ |  |  | ---------- | ---------------
|Trust Indenture Act Section |       | Indenture Section
|                            |       |                  
|                            | § 310 |                   |  | (a)(1)             |  |  | 6.08       |                
|                            |       |                   |  | (a)(2)             |  |  | 6.08       |                
|                            |       |                   |  | (b)                |  |  | 6.08, 6.09 |                
|                            | § 312 |                   |  | (a)                |  |  | 7.05       |                
|                            | § 312 |                   |  | (c)                |  |  | 7.02       |                
|                            | § 313 |                   |  | (a)                |  |  | 7.03       |                
|                            |       |                   |  | (c)                |  |  | 7.03       |                
|                            | § 314 |                   |  | (a)                |  |  | 7.04       |                
|                            |       |                   |  | (a)(4)             |  |  | 10.08      |                
|                            |       |                   |  | (c)(1)             |  |  | 1.02       |                
|                            |       |                   |  | (c)(2)             |  |  | 1.02       |                
|                            |       |                   |  | (e)                |  |  | 1.02       |                
|                            | § 315 |                   |  | (b)                |  |  | 6.02       |                
|                            | § 316 |                   |  | (a)(last sentence) |  |  | 1.01       | (Outstanding)
|                            |       |                   |  | (a)(1)(A)          |  |  | 5.12       |                
|                            |       |                   |  | (a)(1)(B)          |  |  | 5.13       |                
|                            |       |                   |  | (b)                |  |  | 5.08       |                
|                            | § 317 |                   |  | (a)(1)             |  |  | 5.03       |                
|                            |       |                   |  | (a)(2)             |  |  | 5.04       |                
|                            | § 318 |                   |  | (a)                |  |  | 1.12       |                
|                            |       |                   |  | (c)                |  |  | 1.12       |                



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

Section 318(c) of the Trust Indenture Act provides that the provisions of
Sections 310 to and including 317 of the Trust Indenture Act are a part of and
govern every qualified indenture, whether or not physically contained therein.

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INDENTURE dated as of February 27, 2003 between Potash Corporation of
Saskatchewan Inc., a corporation organized under the laws of Canada (PCS),
having its principal office at Suite 500, 122 1st Avenue South, Saskatoon,
Saskatchewan, Canada S7K 7G3 and The Bank of Nova Scotia Trust Company of New
York, a corporation organized under the laws of the State of New York, as
Trustee (the Trustee), having its Corporate Trust Office at One Liberty
Plaza, New York, New York 10006.

RECITALS

PCS has duly authorized the execution and delivery of this Indenture to
provide for the issuance from time to time of its debt securities
(Securities), in an unlimited aggregate principal amount, to bear interest at
the rates or formulas, to mature at such times and to have such other
provisions as shall be fixed as hereinafter provided.

This Indenture is subject to the provisions of the Trust Indenture Act of
1939, as amended, that are deemed to be incorporated into this Indenture and
shall, to the extent applicable, be governed by such provisions.

All things necessary to make this Indenture a valid agreement of PCS, in
accordance with its terms, have been done.

Now, therefore, this Indenture witnesseth:

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

ARTICLE ONE

DEFINITIONS AND OTHER PROVISIONS OF GENERAL APPLICATION



| |                                                                                                                                                                                        
| | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | Section 1.01 Definitions. For all purposes of this Indenture, except as otherwise
expressly provided or unless the context otherwise requires:                                         
|
| | (a) the terms defined in this Article One have the meanings assigned to
them in this Article One, and include the plural as well as the singular;                                      
|
| | (b) all other terms used herein which are defined in the TIA, either
directly or by reference therein, have the meanings assigned to them
therein;                                     
|
| | (c) all accounting terms not otherwise defined herein have the meanings
assigned to them in accordance with Canadian GAAP; and                                                         
|
| | (d) 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.





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The following terms shall have the indicated respective meanings:

Act when used with respect to any Holder, has the meaning specified in
Section 1.04.

Additional Amounts has the meaning specified in Section 10.09.

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 the purposes of this definition,
control when used with respect to any 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 have meanings correlative to the foregoing.

Authenticating Agent means any authenticating agent appointed by the
Trustee pursuant to Section 6.12.

Attributable Debt means, with respect to any Sale and Leaseback
Transaction as of any particular time, the present value (discounted at the
rate of interest implicit in the terms of the lease) of the obligations of the
lessee under such lease for net rental payments during the remaining term of
the lease (including any period for which such lease has been extended). Net
rental payments under any lease for any period means the sum of the rental and
other payments required to be paid in such period by the lessee thereunder, not
including, however, any amounts required to be paid by such lessee (whether or
not designated as rental or additional rental) on account of maintenance and
repairs, insurance, taxes, assessments or similar charges.

Bankruptcy Law has the meaning specified in Section 5.01.

Board of Directors means the board of directors of PCS, the executive
committee or any committee of that board, a managing director or any officer
duly authorized to act hereunder.

Board Resolution means a copy of a resolution certified by the Secretary
or an Assistant Secretary of PCS 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.

Business Day, when used with respect to any Place of Payment or any
other particular location referred to in this Indenture or in the Securities,
means, unless otherwise specified with respect to any Securities pursuant to
Section 3.01, any day, other than a Saturday or Sunday, that is neither a legal
holiday nor a day on which banking institutions in that Place of Payment or
particular location are authorized or required by law, regulation or executive
order to close.

calculation period has the meaning specified in Section 3.10.

Canadian GAAP means generally accepted accounting principles, as in effect
from time to time, as used in Canada applied on a consistent basis.

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Capital Stock means, with respect to any Person, any capital stock
(including preferred stock), shares, interests, participations or other
ownership interests (however designated) of such Person and any rights (other
than debt securities convertible or exchangeable for corporate stock), warrants
or options to purchase any thereof.

Clearstream means Clearstream Banking, societé anonyme, or its
successor.

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

Common Shares means, with respect to any Person, Capital Stock issued by
such Person other than Preferred Shares.

Consolidated Net Tangible Assets of PCS means, at any date, the gross
book value as shown by the accounting books and records of PCS of all property
both real and personal of PCS and its Subsidiaries, determined on a
consolidated basis in accordance with Canadian GAAP (including appropriate
deductions for any minority interests in property of Subsidiaries of PCS), less
(a) the gross book value of all its licenses, patents, patent applications,
copyrights, trademarks, trade names, goodwill, noncompete agreements or
organizational expenses and other like intangibles, (b) gross Debt discount and
expense, (c) all reserves for depreciation, obsolescence, depletion and
amortization of its properties, and (d) all other proper reserves which in
accordance with Canadian GAAP should be provided in connection with the
business conducted by PCS and its Subsidiaries.

Conversion Event means the cessation of use of (a) a Foreign Currency
both by the government of the country which issued such currency and for the
settlement of transactions by a central bank or other public institution of or
within the international banking community or (b) any currency unit (or
composite currency) the purposes for which it was established.

Corporate Trust Office means the office of the Trustee at which, at any
particular time, its corporate trust business shall be principally
administered, which office at the date hereof is located at One Liberty Plaza,
New York, New York 10006.

Corporation includes corporations, partnerships, limited liability
companies and trusts.

covenant defeasance has the meaning specified in Section 14.03.

Custodian has the meaning specified in Section 5.01.

Debt of PCS or any Subsidiary means any indebtedness of PCS or any
Subsidiary, whether or not contingent, in respect of (without duplication) (a)
borrowed money, whether or not evidenced by bonds, notes, debentures or similar
instruments, (b) indebtedness secured by any Lien existing on property owned by
PCS or any Subsidiary, (c) the reimbursement obligations, contingent or
otherwise, in connection with any letters of credit actually issued or amounts
representing the balance deferred and unpaid of the purchase price of

3



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any property or services, except any such balance that constitutes an
accrued expense or trade payable, (d) the principal amount of all obligations
of PCS or any Subsidiary with respect to redemption, repayment or other
repurchase of any Disqualified Stock, or (e) any lease of property by PCS or
any Subsidiary as lessee which is reflected on PCSs consolidated balance sheet
as a capitalized lease in accordance with Canadian GAAP to the extent, in the
case of items of indebtedness under (a) through (c) above, that any such items
(other than letters of credit) would appear as a liability on PCSs
consolidated balance sheet in accordance with Canadian GAAP, and also includes,
to the extent not otherwise included, any obligation by PCS or any Subsidiary
to be liable for, or to pay, as obligor, guarantor or otherwise (other than for
purposes of collection in the ordinary course of business), Debt of another
Person (other than PCS or any Subsidiary).

default has the meaning specified in Section 6.02.

Defaulted Interest has the meaning specified in Section 3.07.

defeasance has the meaning specified in Section 14.02.

Disqualified Stock means, with respect to any Person, any Capital Stock
of such Person which by the terms of such Capital Stock (or by the terms of any
security into which it is convertible or for which it is exchangeable or
exercisable), upon the happening of any event or otherwise, (a) matures or is
mandatorily redeemable, pursuant to a sinking fund obligation or otherwise, (b)
is convertible into or exchangeable or exercisable for Debt or Disqualified
Stock, or (c) is redeemable at the option of the holder thereof; in whole or in
part, in each case on or prior to the Stated Maturity of the series of
Securities involved.

Dollar or $ means a dollar or other equivalent unit in such coin or
currency of the United States of America as at the time shall be legal tender
for the payment of public and private debts.

DTC means The Depository Trust Company.

Euroclear means Euroclear Bank S.A./N.V., or its successor as operator
of the Euroclear Clearance System.

Event of Default has the meaning specified in Article Five.

Exchange Act means the Securities Exchange Act of 1934, as amended, and
the rules and regulations promulgated thereunder by the Commission.

Excluded Taxes has the meaning specified in Section 10.06.

executive officer means such officer or officers of PCS as are certified
to the Trustee from time to time by the Secretary or any Assistant Secretary of
PCS.

Foreign Currency means any currency, currency unit or composite currency
issued by the government of one or more countries other than the United States
of America or by any recognized confederation or association of such
governments.

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Government Obligation means securities which are (a) direct obligations
of the United States of America or the government which issued the Foreign
Currency in which Securities of a particular series are payable, for the
payment of which its full faith and credit is pledged, or (b) obligations of a
Person controlled or supervised by and acting as an agency or instrumentality
of the United States of America or such government which issued the Foreign
Currency in which Securities of such series are payable, the payment of which
is unconditionally guaranteed as a full faith and credit obligation by the
United States of America or such other government, which, in either case, are
not callable or redeemable at the option of the issuer thereof, and shall also
include a depository receipt issued by a bank or trust as custodian with
respect to any such Government Obligation or a specific payment of interest on
or principal of any such Government Obligation held by such custodian for the
account of the holder of a depository receipt, 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 depository receipt from any amount
received by the custodian in respect of the Government Obligation or the
specific payment of interest on or principal of the Government Obligation
evidenced by such depository receipt.

Holder means the 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; and shall
include the terms of particular series of Securities established as
contemplated by Section 3.01; provided, however, that, if at any time more than
one Person is acting as Trustee under this instrument, Indenture shall mean,
with respect to any one or more series of Securities for which such Person is
Trustee, 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 and shall include the
terms of the or those particular series of Securities for which such Person is
Trustee established as contemplated by Section 3.01, exclusive, however, of any
provisions or terms which relate solely to other series of Securities for which
such Person is not Trustee, regardless of when such terms or provisions were
adopted, and exclusive of any provisions or terms adopted by means of one or
more indentures supplemental hereto executed and delivered after such Person
had become such Trustee but to which such Person, as such Trustee, was not a
party.

Indexed Security means a Security the terms of which provide that the
principal amount thereof payable at Stated Maturity may be more or less than
the principal face amount thereof at original issuance.

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, and, when used with respect to a Security which provides for
the payment of Additional Amounts pursuant to Section 10.06, includes such
Additional Amounts.

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

5



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Lien means any mortgage, charge, security interest, pledge,
hypothecation, assignment, deposit arrangement, encumbrance, lien (statutory or
other) or other security agreement except:

(a) liens for taxes and other governmental assessments, including utility
charges and vault rentals (i) which are not yet delinquent, or (ii) which are
being contested in good faith by appropriate proceedings;

(b) carriers, warehousemens, mechanics, materialmens, repairmens,
brokers or other like liens (i) which do not remain unsatisfied or
undischarged for a period of more than 90 days, or (ii) which are being
contested in good faith by appropriate proceedings;

(c) attachment or judgment liens not giving rise to a default or an Event
of Default and which are being contested in good faith by appropriate
proceedings;

(d) pledges or deposits in connection with workers compensation,
unemployment insurance and other social security legislation and deposits
securing liability to insurance carriers under insurance or self-insurance
arrangements;

(e) deposits to secure the performance of bids, trade contracts (other
than for borrowed money), leases, statutory obligations, surety and appeal
bonds, performance bonds and other obligations of a like nature incurred in the
ordinary course of business; and

(f) easements, rights of way, restrictions, development orders, plats and
other similar encumbrances.

mandatory sinking fund payment has the meaning specified in Section
12.01.

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 provided, whether at the Stated Maturity or by
declaration of acceleration, notice of redemption, notice of option to elect
repayment or otherwise.

Notice of Default has the meaning specified in Section 5.01.

Officers Certificate means a certificate signed by two executive
officers of PCS and delivered to the Trustee.

Opinion of Counsel means a written opinion of counsel, who may be United
States or Canadian counsel for PCS or who may be an employee of PCS, or a
combination of such counsel and an employee of PCS, and who shall be reasonably
satisfactory to the Trustee.

optional sinking fund payment has the meaning specified in Section
12.01.

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 5.02.

6



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

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

(b) Securities, or portions thereof; for whose payment or redemption or
repayment at the option of the Holder money in the necessary amount has been
theretofore deposited with the Trustee or any Paying Agent (other than PCS) in
trust or set aside and segregated in trust by PCS (if PCS 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;

(c) Securities, except to the extent provided in Sections 14.02 and 14.03,
with respect to which PCS has effected defeasance and/or covenant defeasance as
provided in Article Fourteen;

(d) Securities 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 protected
purchaser in whose hands such Securities are valid obligations of PCS; and

(e) Securities converted into Common Shares or Preferred Shares pursuant
to or in accordance with this Indenture if the terms of such Securities provide
for convertibility pursuant to Section 3.01;

provided, however, that in determining whether the Holders of the requisite
principal amount of Outstanding Securities have given any request, demand,
authorization, direction, notice, consent or waiver hereunder or are present at
a meeting of Holders for quorum purposes, and for the purpose of making the
calculations required by the TIA Section 313, (a) the principal amount of an
Original Issue Discount Security that may be counted in making such
determination or calculation and that shall be deemed to be Outstanding for
such purpose shall be equal to the amount of principal thereof that would be
(or shall have been declared to be) due and payable, at the time of such
determination, upon a declaration of acceleration of the maturity thereof
pursuant to Section 5.02, (b) the principal amount of any Security denominated
in a Foreign Currency that may be counted in making such determination or
calculation and that shall be deemed Outstanding for such purpose shall be
equal to the Dollar equivalent, determined pursuant to Section 3.01 as of the
date such Security is originally issued by PCS as set forth in an Officers
Certificate relating to exchange rates, of the principal amount (or, in the
case of an Original Issue Discount Security, the Dollar equivalent as of such
date of original issuance of the amount determined as provided in clause (a)
above) of such Security, (c) the principal amount of any Indexed Security that
may be counted in making such determination or calculation and that shall be
deemed outstanding for such purpose shall be equal to the principal face amount
of such Indexed Security at original issuance, unless otherwise provided with
respect to such Security pursuant to Section 3.01, and (d) Securities owned by
PCS or any other obligor upon Securities

7



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or any Affiliate of PCS or of such other obligor shall be disregarded and
deemed not to be Outstanding, except that, in determining whether the Trustee
shall be protected in making such calculation or in relying upon any such
request, demand, authorization, direction, notice, consent or waiver, only
Securities which 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 PCS or any other obligor upon Securities or any Affiliate of PCS or of
such other obligor.

Paying Agent means any Person (including PCS acting as Paying Agent)
authorized by PCS to pay the principal of (and premium, if any) or interest on
any Securities on behalf of PCS.

PCS means Potash Corporation of Saskatchewan Inc. until a successor
entity shall have become such pursuant to the applicable provisions of this
Indenture, and thereafter PCS shall mean such successor entity.

PCS Request and PCS Order mean, respectively, a written request or
order signed in the name of PCS by two executive officers of PCS, and delivered
to the Trustee.

Permitted Short-Term Investments means investments in obligations,
maturing not later than 180 days after the date of acquisition:

(a) issued by the Government of Canada or the United States, or an
instrumentality or agency thereof and guaranteed fully as to principal,
premium, if any, and interest by Canada or the United States;

(b) issued by a province of Canada, or an instrumentality or agency
thereof, with a rating of at least R1 (low) by Dominion Bond Rating Service
Limited (DBRS);

(c) term deposits, guaranteed investment certificates, certificates of
deposit, bankers acceptances or bearer deposit notes of any Canadian chartered
bank or other financial institution which have been rated at least A-1 by
Standard & Poors Corporation (S&P) or at least P-1 or the equivalent thereof
by Moodys Investors Service, Inc. (Moodys) or at least R1 (mid) by DBRS;

(d) commercial paper issued by a corporation organized and existing under
the laws of Canada or the United States with a rating of at least A-1 by S&P,
P-1 by Moodys or R1 (mid) by DBRS;

(e) any asset-backed debt securities with ratings of at least A-1 by S&P,
P-1 by Moodys or R1 (high) by DBRS; and

(f) notes, bonds, coupons, debentures or other debt securities issued by
any United States or Canadian corporation with ratings of at least A-1 by S&P,
P-1 by Moodys or R1 (mid) by DBRS;

8



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provided that in the event of a rating downgrade on any Permitted Short-Term
Investment by S&P, Moodys or DBRS during the period in which the Permitted
Short-Term Investment is held, PCS acting reasonably, shall have the full
discretion to retain the Permitted Short-Term Investment to maturity.

Person means any individual, corporation, partnership, limited liability
company, joint venture, association, joint-stock company, trust, unincorporated
organization or government or any agency or political subdivision thereof.

Place of Payment, when used with respect to Securities of or within any
series, means the place or places where the principal of (and premium, if any)
and interest on such Securities are payable as specified as contemplated by
Sections 3.01 and 10.02.

Preferred Shares means, with respect to any Person, Capital Stock issued
by such Person that are entitled to a preference or priority over any other
Capital Stock issued by such Person upon any distribution of such Persons
assets, whether by dividend or upon liquidation.

Principal Property means (a) any real property interest (all such
interests forming an integral part of a single development or operation being
considered as one interest), including any mining claims and leases, and any
plants, buildings or other improvements thereon, and any part thereof, that is
held by PCS or any Subsidiary and has a gross book value (without deduction of
any reserve for depreciation), on the date as of which the determination is
being made, exceeding 5% of Consolidated Net Tangible Assets of PCS (other than
any such interest that the Board of Directors determines by resolution is not
material to the business of PCS and its Subsidiaries taken as a whole), or (b)
any of the Capital Stock or debt securities issued by any Significant
Subsidiary.

Redemption Date, when used with respect to any Security to be redeemed,
in whole or in part, 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 Securities of or within any series means the date specified for that
purpose as contemplated by Section 3.01, whether or not a Business Day.

Repayment Date, when used with respect to any Security to be repaid at
the option of the Holder, means the date fixed for such repayment by or
pursuant to this Indenture.

Repayment Price, when used with respect to any Security to be repaid at
the option of the Holder, means the price at which it is to be repaid by or
pursuant to this Indenture.

Responsible Officer, when used with respect to the Trustee, means the
chairman or vice-chairman of the board of directors, the chairman or
vice-chairman of the executive committee of the board of directors, the
president, any vice president (whether or not designated by a number or a word
or words added before or after the title vice president), the
9

secretary, any assistant secretary, the treasurer, any assistant
treasurer, any corporate trust officer, the controller or any other officer of
the Trustee customarily performing functions similar to those performed by any
of the above designated officers and also means, with respect to a particular
corporate trust matter, any other officer to whom such matter is referred
because of such officers knowledge and familiarity with the particular
subject.

Sale and Leaseback Transaction of any Person means an arrangement with
any lender or investor or to which such lender or investor is a party providing
for the leasing by such Person of any property or asset of such Person which
has been or is being sold or transferred by such Person more than 360 days
after the acquisition thereof or the completion of construction or commencement
of operation thereof to such lender or investor or to any Person to whom funds
have been or are to be advanced by such lender or investor on the security of
such property or asset.

Security has the meaning stated in the first recital of this Indenture
and, more particularly, means any Security or Securities authenticated and
delivered under this Indenture; provided, however, that, if at any time there
is more than one Person acting as Trustee under this Indenture, Securities
with respect to the Indenture as to which such Person is Trustee shall have the
meaning stated in the first recital of this Indenture and shall more
particularly mean Securities authenticated and delivered under this Indenture,
exclusive, however, of Securities of any series as to which such Person is not
Trustee.

Security Register and Security Registrar have the respective meanings
specified in Section 3.05.

Significant Subsidiary means any Subsidiary of PCS that is a
significant subsidiary (as defined in Article I, Rule 1-02 of Regulation S-X,
promulgated by the Commission).

Special Record Date for the payment of any Defaulted Interest on
Securities of or within any series means a date fixed by the Trustee pursuant
to Section 3.07.

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 an entity a majority of the interests or a majority of
the outstanding voting stock of which is owned, directly or indirectly, by PCS
or by one or more other Subsidiaries of PCS. For the purposes of this
definition, voting stock means stock having voting power 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.

successor entity has the meaning specified in Section 8.01.

Taxes has the meaning specified in Section 10.06.

10



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TIA means the Trust Indenture Act of 1939, as amended and as in force at
the date as of which this Indenture was executed, except as provided in Section
9.05.

Trustee means the Person named as the Trustee in the first paragraph
of this Indenture 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; provided, however,
that if at any time there is more than one such Person, Trustee as used with
respect to Securities of any series shall mean only the Trustee with respect to
Securities of that series.

25% Excess Proceeds has the meaning specified in Section 10.08.

United States means, unless otherwise specified with respect to any
Securities pursuant to Section 3.01, the United States of America (including
the states and the District of Columbia), its territories, its possessions and
other areas subject to its jurisdiction.

Yield to Maturity means the yield to maturity, computed at the time of
issuance of a Security (or, if applicable, at the most recent redetermination
of interest on such Security) and as set forth in such Security in accordance
with generally accepted United States bond yield computation principles.

SECTION 1.02 Compliance Certificates and Opinions. Upon any application
or request by PCS to the Trustee to take any action under any provision of this
Indenture, PCS shall furnish to the Trustee an Officers Certificate stating
that all conditions precedent, if any, provided for in this Indenture
(including any covenant compliance with which constitutes a condition
precedent) relating to the proposed action have been complied with and an
Opinion of Counsel stating that in the opinion of such counsel all such
conditions precedent, if any, have been complied with; provided that in the
case of any such application or request as to which the furnishing of such
certificate and opinion is specifically required by any provision of this
Indenture relating to such particular application or request, no additional
certificate or opinion need be furnished.

Every certificate or opinion with respect to compliance with a condition
or covenant provided for in this Indenture (including certificates delivered
pursuant to Section 10.08) shall include:



| |                                                                                                                                                                                                                                                                                   
| | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (a) a statement that each individual signing such certificate or
opinion has read such condition or covenant and the definitions herein
relating thereto;                                                                                                                         
|
| | (b) 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;                                                                                                    
|
| | (c) a statement that, in the opinion of each such individual, he or
she has made such examination or investigation as is reasonably necessary
to enable such individual to express an informed opinion as to whether or
not such condition or covenant has been complied with; and

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| |                                                                                                                          
| | -------------------------------------------------------------------------------------------------------------------------
| | (d) a statement as to whether, in the opinion of each such
individual, such condition or covenant has been complied with.

SECTION 1.03 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 as 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 PCS may be based, insofar as
it relates to legal matters, upon an Opinion of Counsel, or a certificate or
representations by counsel, unless such officer knows, or in the exercise of
reasonable care should know, that the opinion, certificate or representations
with respect to the matters upon which his certificate or opinion is based are
erroneous. Any such Opinion of Counsel or certificate or representations may
be based, insofar as it relates to factual matters, upon a certificate or
opinion of, or representations by, an officer or officers of PCS stating that
the information as to such factual matters is in the possession of PCS, unless
such counsel knows that the certificate or opinion or representations as to
such matters are 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 1.04 Acts of Holders; Record Dates. (a) Any request, demand,
authorization, direction, notice, consent, waiver or other action provided by
this Indenture to be given or taken by Holders of Outstanding Securities of all
series or one or more series, as the case may be, may be embodied in and
evidenced by one or more instruments of substantially similar tenor signed by
such Holders in person or by agents duly appointed in writing. 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 PCS. 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, or
of the holding by any Person of a Security, shall be sufficient for any purpose
of this Indenture.

(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 the execution thereof. Where
such execution is by a signer acting in a capacity other than his individual
capacity, such certificate or affidavit shall also constitute sufficient proof
of his 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 reasonable manner which the Trustee deems sufficient.

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(c) The ownership of Securities shall be proved by the Security Register.

(d) If PCS shall solicit from the Holders of Securities any request,
demand, authorization, direction, notice, consent, waiver or other Act, PCS
may, at its option, in or pursuant to a Board Resolution, fix in advance a
record date for the determination of Holders entitled to give such request,
demand, authorization, direction, notice, consent, waiver or other Act, but PCS
shall have no obligation to do so. Notwithstanding TIA Section 316(c), such
record date shall be the record date specified in or pursuant to such Board
Resolution, which shall be a date not earlier than the date 30 days prior to
the first solicitation of Holders generally in connection therewith and not
later than the date such solicitation is completed. If such a record date is
fixed, such request, demand, authorization, direction, notice, consent, waiver
or other Act may be given before or after such record date, but only the
Holders of record at the close of business on such record date shall be deemed
to be Holders for the purposes of determining whether Holders of the requisite
proportion of Outstanding Securities have authorized or agreed or consented to
such request, demand, authorization, direction, notice, consent, waiver or
other Act, and for that purpose Outstanding Securities shall be computed as of
such record date; provided that no such authorization, agreement or consent by
the Holders on such record date shall be deemed effective unless it shall
become effective pursuant to the provisions of this Indenture not later than
eleven months after the record date.

In the absence of any such record date fixed by PCS, regardless as to
whether a solicitation of the Holders is occurring on behalf of PCS or any
Holder, the Trustee may, at its option, fix in advance a record date for the
determination of such Holders entitled to give such request, demand,
authorization, direction, notice, consent, waiver or other Act, but the Trustee
shall have no obligation to do so. Any such record date shall be a date not
more than 30 days prior to the first solicitation of Holders generally in
connection therewith and no later than the date of such solicitation.

(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, any Security
Registrar, any Paying Agent, any Authenticating Agent or PCS in reliance
thereon, whether or not notation of such action is made upon such Security.

SECTION 1.05 Notices, etc., to Trustee and PCS. 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,



| |                                                                                                                                                                                                                                                          
| | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (a) the Trustee by any Holder or by PCS shall be sufficient for
every purpose hereunder if made, given, furnished or filed in writing and
mailed, first class postage prepaid to or with the Trustee at its
Corporate Trust Office.                      
|
| | (b) PCS 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 PCS addressed to
it at the address of its principal office

13



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| |                                                                                                                                  
| | ---------------------------------------------------------------------------------------------------------------------------------
| | specified in the first paragraph of this Indenture or at any other
address previously furnished in writing to the Trustee by PCS.

SECTION 1.06 Notice to Holders; Waiver. Where this Indenture provides for
notice of any event to Holders by PCS or the Trustee, such notice shall be
sufficiently given (unless otherwise herein expressly provided) if in writing
and mailed, first-class postage prepaid, to each such Holder affected by such
event, at his 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. 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. Any notice mailed to a Holder in
the manner herein prescribed shall be conclusively deemed to have been received
by such Holder, whether or not such Holder actually receives such notice.

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

Any request, demand, authorization, direction, notice, consent, waiver or
other action required or permitted under this Indenture shall be in the English
language.

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.

SECTION 1.07 Conflict with Trust Indenture Act. This Indenture is subject
to the provisions of the TIA that are required to be part of this Indenture.
If any provision of this Indenture limits, qualifies or conflicts with a
provision of the TIA that is required under the TIA to be a part of and govern
this Indenture, the latter provision shall control. If any provision of this
Indenture modifies or excludes any provision of the TIA that may be so modified
or excluded, the latter provision shall be deemed to apply to this Indenture as
so modified or excluded, as the case may be.

SECTION 1.08 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 1.09 Successors and Assigns. All covenants and agreements in this
Indenture by PCS shall bind its successors and assigns, whether so expressed or
not.

SECTION 1.10 Separability Clause. In case any provision in this Indenture
or in any Security 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.

14



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SECTION 1.11 Benefits of Indenture. Nothing in this Indenture or in
Securities, express or implied, shall give to any Person, other than the
parties hereto, any Security Registrar, any Paying Agent, any Authenticating
Agent and their successors hereunder and the Holders, any benefit or any legal
or equitable right, remedy or claim under this Indenture.

SECTION 1.12 Governing Law. This Indenture and Securities shall be
governed by and construed in accordance with the law of the State of New York.

SECTION 1.13 Legal Holidays. In any case where any Interest Payment Date,
Redemption Date, Repayment Date, sinking fund payment date, Stated Maturity or
Maturity of any Security shall not be a Business Day at any Place of Payment,
then (unless otherwise provided in any Security) payment of interest or any
Additional Amounts or principal (and premium, if any) 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, Redemption Date, Repayment Date or sinking fund payment
date, or at the Stated Maturity or Maturity; provided that no interest shall
accrue on the amount so payable for the period from and after such Interest
Payment Date, Redemption Date, Repayment Date, sinking fund payment date,
Stated Maturity or Maturity, as the case may be.

SECTION 1.14 Immunity of Shareholders, Directors, Officers and Agents of
PCS. The obligations of PCS under the Indenture and Securities and all
documents delivered in the name of PCS in connection herewith and therewith do
not and shall not constitute personal obligations of the directors, officers,
employees, agents or shareholders of PCS or any of them, and shall not involve
any claim against or personal liability on the part of any of them, and all
persons including the Trustee shall look solely to the assets of PCS for the
payment of any claim thereunder or for the performance thereof and shall not
seek recourse against such directors, officers, employees, agents or
shareholders of PCS or any of them or any of their personal assets for such
satisfaction. The performance of the obligations of PCS under the Indenture
and Securities and all documents delivered in the name of PCS in connection
therewith shall not be deemed a waiver of any rights or powers of PCS, its
directors or its shareholders under PCSs Articles of Incorporation.

SECTION 1.15 Agent for Service: Submission to Jurisdiction. By the
execution and delivery of this Indenture, PCS (a) irrevocably designates and
appoints CT Corporation System, 1633 Broadway, New York, New York 10019 as its
authorized agent upon which process may be served in any suit or proceeding
arising out of or relating to Securities or this Indenture that may be
instituted in any federal or state court in the City of New York or brought
under federal or state securities laws or brought by the Trustee (whether in
its individual capacity or in its capacity as Trustee hereunder), (b) submits
to the non-exclusive jurisdiction of any such court in any such suit or
proceeding, and (c) agrees that service of process upon CT Corporation System
and written notice of said service to PCS (mailed or delivered to its Secretary
at its principal office specified in the first paragraph of this Indenture)
shall be deemed in every respect effective service of process upon PCS in any
such suit or proceeding. PCS further agrees to take any and all action,
including the execution and filing of any and all such documents and
instruments, as may be necessary to continue such designation and appointment
of CT Corporation System in full force and effect so long as any Securities
shall be outstanding.

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ARTICLE TWO
SECURITIES FORMS

SECTION 2.01 Forms of Securities. Securities of each series shall be in
substantially the forms as shall be established in one or more indentures
supplemental hereto or approved from time to time by or pursuant to a Board
Resolution in accordance with Section 3.01, shall have such appropriate
insertions, omissions, substitutions and other variations as are required or
permitted by this Indenture or any indenture supplemental hereto, and may have
such letters, numbers or other marks of identification or designation and such
legends or endorsements placed thereon as PCS may deem appropriate and as are
not inconsistent with the provisions of this Indenture, or as may be required
to comply with any law or with any rule or regulation made pursuant thereto or
with any rule or regulation of any stock exchange on which Securities may be
listed, or to conform to usage. If the forms of Securities of any series are
established by action taken pursuant to a Board Resolution, a copy of such
Board Resolution shall be delivered to the Trustee at or prior to the delivery
of the PCS Order contemplated by Section 3.03 for the authentication and
delivery of such Securities.

The definitive Securities shall be printed, lithographed or engraved or
produced by any combination of these methods on a steel engraved border or
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.

SECTION 2.02 Form of Trustees Certificate of Authentication. Subject to
Section 6.12, 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 2.03 Securities Issuable in Global Form. If Securities of or
within a series are issuable in global form, as contemplated by Section 3.01,
then, notwithstanding clause (h) of Section 3.01 and the provisions of Section
3.02, any such Security shall represent such 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 be 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 a PCS Order to be delivered to the Trustee pursuant to Section 3.03 or
3.04. Subject to the provisions of Section 3.03 and, if applicable, Section
3.04, the Trustee shall deliver and redeliver

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any Security in permanent global form in the manner and upon instructions
given by the Person or Persons specified therein or in the applicable PCS
Order. If a PCS Order pursuant to Section 3.03 or 3.04 has been, or
simultaneously is, delivered, any instructions by PCS with respect to
endorsement or delivery or redelivery of a Security in global form shall be in
writing but need not comply with Section 1.02 and need not be accompanied by an
Opinion of Counsel.

The provisions of the last sentence of Section 3.03 shall apply to any
Security represented by a Security in global form if such Security was never
issued and sold by PCS and PCS delivers to the Trustee the Security in global
form together with written instructions (which need not comply with Section
1.02 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 3.03.

Notwithstanding the provisions of Section 3.07, unless otherwise specified
as contemplated by Section 3.01, payment of principal of (and premium, if any)
and interest on any Security in permanent global form shall be made to the
Person or Persons specified therein.

Notwithstanding the provisions of Section 3.08 and except as provided in
the preceding paragraph, PCS, the Trustee and any agent of PCS and the Trustee
shall treat as the Holder of such principal amount of Outstanding Securities
represented by a permanent global Security in the case of a permanent global
Security in registered form, the Holder of such permanent global Security in
registered form.

ARTICLE THREE
THE SECURITIES

SECTION 3.01 Amount; Issuable in Series. The aggregate principal amount
of Securities which may be authenticated and delivered under this Indenture is
unlimited.

Securities may be issued in one or more series. There shall be
established in one or more Board Resolutions or pursuant to authority granted
by one or more Board Resolutions and, subject to Section 3.03, set forth, or
determined in the manner provided, in an Officers Certificate, or established
in one or more indentures supplemental hereto, prior to the issuance of
Securities of any series, any or all of the following, as applicable (each of
which (except for the matters set forth in clauses (a), (b) and (o) below), if
so provided, may be determined from time to time by PCS with respect to
unissued Securities of the series when issued from time to time):



| |                                                                                                                                                                                                                                                                                                                                                
| | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (a) the title of Securities of the series (which shall distinguish
Securities of such series from all other series of Securities);                                                                                                                                                                                                             
|
| | (b) the aggregate principal amount of Securities of the series that
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 Section 3.04, 3.05, 3.06, 9.06, 11.07 or 13.05);
|
| | (c) the date or dates, or the method by which such date or dates
will be determined, on which the principal of Securities of the series
shall be payable;                                                                                                                                                                                      

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| |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
| | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (d) the rate or rates at which Securities of the series shall bear
interest, if any, or the method by which such rate or rates shall be
determined, the date or dates from which such interest shall accrue or
the method by which such date or dates shall be determined, the Interest
Payment Dates on which such interest will be payable and the Regular
Record Date, if any, for the interest payable on any Security on any
Interest Payment Date, or the method by which such date or dates shall be
determined, and the basis upon which interest shall be calculated if
other than that of a 360-day year of twelve 30-day months;
|
| | (e) the place or places, if any, other than or in addition to the
Borough of Manhattan, New York City, where the principal of (and premium,
if any), interest, if any, on, and Additional Amounts, if any, payable in
respect of, Securities of the series shall be payable, any Securities of
the series may be surrendered for registration of transfer, exchange or
conversion and, if different from the location specified in Section 1.05,
notices or demands to or upon PCS in respect of Securities of the series
and this Indenture may be served;                                                                                
|
| | (f) the period or periods within which, the price or prices at
which, the currency or currencies, currency unit or units or composite
currency or currencies in which, and other terms and conditions upon
which Securities of the series may be redeemed, in whole or in part, at
the option of PCS, if PCS is to have the option;                                                                                                                                                                                                                                                                                                        
|
| | (g) the obligation, if any, of PCS to redeem, repay or purchase
Securities of the series pursuant to any sinking fund or analogous
provision or at the option of a Holder thereof, and the period or periods
within which or the date or dates on which, the price or prices at which,
the currency or currencies, currency unit or units or composite currency
or currencies in which, and other terms and conditions upon which
Securities of the series shall be redeemed, repaid or purchased, in whole
or in part, pursuant to such obligation;                                                                                       
|
| | (h) if other than denominations of $1,000 and any integral multiple
thereof, the denominations in which any Securities of the series shall be
issuable;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
|
| | (i) if other than the Trustee, the identity of each Security
Registrar and/or Paying Agent;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|
| | (j) if other than the principal amount thereof, the portion of the
principal amount of Securities of the series that shall be payable upon
declaration of acceleration of the Maturity thereof pursuant to Section
5.02 or, if applicable, the portion of the principal amount of Securities
of the series that is convertible in accordance with the provisions of
this Indenture, or the method by which such portion shall be determined;                                                                                                                                                                                               
|
| | (k) if other than Dollars, the Foreign Currency or Currencies in
which payment of the principal of (and premium, if any) or interest or
Additional Amounts, if any, on Securities of the series shall be payable
or in which Securities of the series shall be denominated, and any other
terms and conditions relating thereto;                                                                                                                                                                                                                                                                                                           
|
| | (l) whether the amount of payments of principal of (and premium, if
any) or interest, if any, on Securities of the series may be determined
with reference to an index,                                                                                                                                                                                                                                                                                                                                                                                                                                                                    

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| |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
| | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | formula or other method (which index, formula or method may be
based, without limitation, on one or more currencies, currency units,
composite currencies, commodities, equity indices or other indices), and
the manner in which such amounts shall be determined;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|
| | (m) whether the principal of (and premium, if any) or interest or
Additional Amounts, if any, on Securities of the series are to be
payable, at the election of PCS or a Holder thereof, in a currency or
currencies, currency unit or units or composite currency or currencies
other than that in which such Securities are denominated or stated to be
payable, the period or periods within which, and the terms and conditions
upon which, such election may be made, and the time and manner of, and
identity of the exchange rate agent with responsibility for, determining
the exchange rate between the currency or currencies, currency unit or
units or composite currency or currencies in which such Securities are
denominated or stated to be payable and the currency or currencies,
currency unit or units or composite currency or currencies in which such
Securities are to be so payable;
|
| | (n) provisions, if any, granting special rights to the Holders of
Securities of the series upon the occurrence of such events as may be
specified;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|
| | (o) any deletions from, modifications of or additions to the Events
of Default or covenants of PCS with respect to Securities of the series,
whether or not such Events of Default or covenants are consistent with
the Events of Default or covenants set forth herein;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|
| | (p) whether any Securities of the series are to be issuable in
global form and, if so, whether beneficial owners of interests in any
such permanent global Security may exchange such interests for Securities
of such series and of like tenor of any authorized form and denomination
and the circumstances under which any such exchanges may occur, if other
than in the manner provided in Section 3.05, and, if Securities of the
series are to be issuable as a global Security, the identity of the
depositary for such series;                                                                                                                                                                                                                                                                                                                                                                        
|
| | (q) the Person to whom any interest on any 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;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|
| | (r) the applicability, if any, of Sections 14.02 and/or 14.03 to
Securities of the series and any provisions in modification of, in
addition to or in lieu of any of the provisions of Article Fourteen;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|
| | (s) if Securities of such series are to be issuable in definitive
form (whether upon original issue or upon exchange of a temporary
Security of such series) only upon receipt of certain certificates or
other documents or satisfaction of other conditions, then the form and/or
terms of such certificates, documents or conditions;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|
| | (t) the obligation, if any, of PCS to permit the conversion of
Securities of such series into PCSs Common Shares or Preferred Shares,
as the case may be, and the                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             

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| |                                                                                                                                                                                                                                                                                                                  
| | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | terms and conditions upon which such conversion shall be effected
(including, without limitation, the initial conversion price or rate, the
conversion period, any adjustment of the applicable conversion price and
any requirements relative to the reservation of such shares for purposes
of conversion); and
|
| | (u) any other terms, conditions, rights and preferences (or
limitations on such rights and preferences) relating to the series (which
terms shall not be inconsistent with the requirements of the TIA or the
provisions of this Indenture).                                                                     

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
such Board Resolution (subject to Section 3.03) and set forth in such Officers
Certificate or in any such indenture supplemental hereto. All Securities of
any one series need not be issued at the same time and, unless otherwise
provided, a series may be reopened, without the consent of the Holders, for
issuances of additional Securities of such series.

If any of the terms of Securities of any series are established by action
taken pursuant to one or more Board Resolutions, a copy of an appropriate
record of such action(s) shall be certified by the Secretary or an Assistant
Secretary of PCS and delivered to the Trustee at or prior to the delivery of
the Officers Certificate setting forth the terms of Securities of such series.

SECTION 3.02 Denominations. Securities of each series shall be issuable
in such denominations as shall be specified as contemplated by Section 3.01.
With respect to Securities of any series denominated in Dollars, in the absence
of any such provisions with respect to Securities of such series, Securities of
such series, other than Securities issued in global form (which may be of any
denomination), shall be issuable in denominations of $1,000 and any integral
multiple thereof.

SECTION 3.03 Executing, Authentication, Delivery and Dating. All
Securities shall be executed on behalf of PCS by an executive officer of PCS
and attested by its Secretary or one of its Assistant Secretaries. The
signature of any of these individuals on Securities may be manual or facsimile
signatures of the present or any future such authorized officer and may be
imprinted or otherwise reproduced on Securities.

Securities bearing the manual or facsimile signatures of individuals who
were at any time the proper officers of PCS shall bind PCS, 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.

At any time and from time to time after the execution and delivery of this
Indenture, PCS may deliver Securities of any series executed by PCS to the
Trustee for authentication, together with a PCS Order for the authentication
and delivery of such Securities, and the Trustee in accordance with such PCS
Order shall authenticate and deliver such Securities. If not all Securities of
any series are to be issued at one time and if the Board Resolution or
supplemental indenture establishing such series shall so permit, such PCS Order
may set forth procedures acceptable to the Trustee for the issuance of such
Securities and

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determining the terms of particular Securities of such series, such as
interest rate or formula, maturity date, date of issuance and date from which
interest shall accrue.

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 TIA Section 315(a)
through 315(d)) shall be fully protected in relying upon,



| |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
| | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (a) an
Opinion or Opinions of Counsel stating that such Securities, when completed by appropriate
insertions and executed and delivered by PCS to the Trustee for
authentication in accordance with this Indenture, authenticated and
delivered by the Trustee in accordance with this Indenture and
issued by PCS in the manner and subject to any conditions specified
in such Opinion of Counsel, will constitute valid, binding and
enforceable obligations of PCS, entitled to the benefits of this
Indenture, except that (A) such Opinion of Counsel is subject to
applicable bankruptcy, insolvency, fraudulent conveyance,
reorganization, moratorium and similar laws affecting creditors
rights generally, to the general principles of equity and to the
judicial application of foreign governmental actions affecting
creditors rights, (C) rights to indemnity and contribution
thereunder may be limited by federal or state securities laws or
the public policy underlying such laws, and (D) such Opinion of
Counsel may express no opinion with respect (i) to any provision
imposing defaulted interest, penalties, forfeitures, increased
interest rates and/or late payment charges upon delinquency in
payment or occurrence of a default and (ii) the separability clause
in Section 1.09; and



| |                                                                                                                                                                                                                                                                                                                                           
| | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (b) an Officers Certificate stating that all conditions precedent
provided for in this Indenture relating to the issuance of such
Securities have been complied with and that, to the best of the knowledge
of the signers of such certificate, no Event of Default with respect to
any Securities shall have occurred and be continuing.

If such form or terms have been so established, the Trustee shall not be
required to authenticate such Securities if the issue of such Securities
pursuant to this Indenture will affect the Trustees own rights, duties,
obligations or immunities under such Securities and this Indenture or otherwise
in a manner which is not reasonably acceptable to the Trustee.

Notwithstanding the provisions of Section 3.01 and of the preceding two
paragraphs, if not all Securities of any series are to be issued at one time,
it shall not be necessary to deliver an Officers Certificate otherwise
required pursuant to Section 3.01 or a PCS Order, an Opinion of Counsel and an
Officers Certificate otherwise required pursuant to the preceding two
paragraphs at the time of issuance of each Security of such series, but such
order, opinion and

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certificate, with appropriate modifications to cover such future
issuances, shall be delivered at or before the time of issuance of the first
Security of such series.

Each Security shall be dated the date of its authentication.

No Security 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
duly executed by the Trustee by manual signature of an authorized signatory,
and such certificate upon any Security shall be conclusive evidence, and the
only evidence, that such Security has been duly authenticated and delivered
hereunder and is entitled to the benefits of this Indenture. Notwithstanding
the foregoing, if any Security shall have been authenticated and delivered
hereunder but never issued and sold by PCS, and PCS shall deliver such Security
to the Trustee for cancellation as provided in Section 3.09 together with a
written statement (which need not comply with Section 1.02 and need not be
accompanied by an Opinion of Counsel) stating that such Security has never been
issued and sold by PCS, 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 3.04 Temporary Securities. Pending the preparation of definitive
Securities of any series, PCS may execute, and upon a PCS 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, in registered form, and with such
appropriate insertions, omissions, substitutions and other variations as the
officers executing such Securities may determine, as conclusively evidenced by
their execution of such Securities. In the case of Securities of any series,
such temporary Securities may be in global form.

If temporary Securities of any series are issued, PCS 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 PCS 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, PCS shall execute and the Trustee shall authenticate
and deliver in exchange therefor a like principal amount of definitive
Securities of the same series of authorized denominations. 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.

SECTION 3.05 Registration, Registration of Transfer and Exchange. PCS
shall cause to be kept at the Corporate Trust Office of the Trustee or in any
office or agency of PCS in a Place of Payment a register for each series of
Securities (the registers maintained in such office or in any such office or
agency of PCS in a Place of Payment being herein sometimes referred to
collectively as the Security Register) in which, subject to such reasonable
regulations as it may prescribe, PCS shall provide for the registration of
Securities and of transfers of Securities. The Security Register shall be in
written form or any other form capable of being converted into written form
within a reasonable time. The Trustee, at its Corporate Trust Office, is
hereby appointed Security Registrar for the purpose of registering Securities

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and transfers of Securities on such Security Register as herein provided.
In the event that the Trustee shall cease to be Security Registrar, it shall
have the right to examine the Security Register at all reasonable times.

Subject to the provisions of this Section 3.05, upon surrender for
registration of transfer of any Security of any series at any office or agency
of PCS in a Place of Payment for that series, PCS shall execute, and the
Trustee shall authenticate and deliver, in the name of the designated
transferee or transferees, one or more replacement Securities of the same
series, of any authorized denominations and of a like aggregate principal
amount, bearing a number not contemporaneously outstanding, and containing
identical terms and provisions.

Subject to the provisions of this Section 3.05, at the option of the
Holder, certificates representing Securities of any series may be exchanged for
other Securities of the same series, of any authorized denomination or
denominations and of a like aggregate principal amount, containing identical
terms and provisions, upon surrender of certificates representing Securities to
be exchanged at any such office or agency. Whenever any such Securities are so
surrendered for exchange, PCS shall execute, and the Trustee shall authenticate
and deliver, Securities that the Holder making the exchange is entitled to
receive.

Notwithstanding the foregoing, except as otherwise specified as
contemplated by Section 3.01, any permanent global Security shall be
exchangeable only as provided in this paragraph. If the depositary for any
permanent global Security is The Depository Trust Company (DTC), then, unless
the terms of such global Security expressly permit such global Security to be
exchanged in whole or in part for definitive Securities, a global Security may
be transferred, in whole but not in part, only to a nominee of DTC, or by a
nominee of DTC to DTC, or to a successor to DTC for such global Security
selected or approved by PCS or to a nominee of such successor to DTC. If at
any time DTC notifies PCS that it is unwilling or unable to continue as
depositary for the applicable global Security or Securities or if at any time
DTC ceases to be a clearing agency registered under the Exchange Act if so
required by applicable law or regulation, PCS shall appoint a successor
depositary with respect to such global Security or Securities. If (a) a
successor depositary for such global Security or Securities is not appointed by
PCS within 90 days after PCS receives such notice or becomes aware of such
unwillingness, inability or ineligibility, (b) an Event of Default has occurred
and is continuing and the beneficial owners representing a majority in
principal amount of the applicable series of Securities represented by such
global Security or Securities advise DTC to cease acting as depositary for such
global Security or Securities, or (c) PCS, in its sole discretion, determines
at any time that all Outstanding Securities (but not less than all) of any
series issued or issuable in the form of one or more global Securities shall no
longer be represented by such global Security or Securities, then PCS shall
execute, and the Trustee shall authenticate and deliver definitive Securities
of like series, tenor and terms in definitive form in an aggregate principal
amount equal to the principal amount of such global Security or Securities. If
any beneficial owner of an interest in a permanent global Security is otherwise
entitled to exchange such interest for Securities of such series and of like
tenor and principal amount of another authorized form and denomination, as
specified as contemplated by Section 3.01 and provided that any applicable
notice provided in the permanent global Security shall have been given, then
without unnecessary delay but in any event not later than the earliest date on
which such interest may be so exchanged, PCS shall execute, and the Trustee
shall authenticate and deliver definitive

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Securities in aggregate principal amount equal to the principal amount of
such beneficial owners interest in such permanent global Security. On or
after the earliest date on which such interests may be so exchanged, such
permanent global Security shall be surrendered for exchange by DTC or such
other depositary as shall be specified in the PCS Order with respect thereto to
the Trustee, as PCSs agent for such purpose, to be exchanged, in whole or from
time to time in part, for definitive Securities without charge, and the Trustee
shall authenticate and deliver, in exchange for each portion of such permanent
global Security, an equal aggregate principal amount of definitive Securities
of the same series of authorized denominations and of like tenor as the portion
of such permanent global Security to be exchanged; provided, however, that no
such exchanges may occur during a period beginning at the opening of business
15 days before any selection of Securities to be redeemed and ending on the
relevant Redemption Date if the Security for
 which exchange is requested may be
among those selected for redemption. If a Security is issued in exchange for
any portion of a permanent global Security after the close of business at the
office or agency where such exchange occurs on (x) any Regular Record Date and
before the opening of business at such office or agency on the relevant
Interest Payment Date, or (y) any Special Record Date and before the opening of
business at such office or agency on the related proposed date for payment of
Defaulted Interest, then interest or Defaulted Interest, as the case may be,
will not be payable on such Interest Payment Date or proposed date for payment,
as the case may be, in respect of such Security, but will be payable on such
Interest Payment Date or proposed date for payment, as the case may be, only to
the Person to whom interest in respect of such portion of such permanent global
Security is payable in accordance with the provisions of this Indenture.

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

Every Security presented or surrendered for registration of transfer or
for exchange or redemption shall (if so required by PCS or the Security
Registrar) be duly endorsed, or be accompanied by a written instrument of
transfer in form satisfactory to PCS 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 PCS 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 3.04, 9.06, 11.07 or 13.05 not involving any
transfer.

PCS or the Trustee, as applicable, shall not be required (a) to issue,
register the transfer of or exchange any Security if such Security may be among
those selected for redemption during a period beginning at the opening of
business 15 days before selection of Securities to be redeemed under Section
11.03 and ending at the close of business on the day of the mailing of the
relevant notice of redemption, (b) to register the transfer of or exchange any
Security so selected for redemption in whole or in part, except, in the case of
any Security to be redeemed in part, the portion thereof not to be redeemed, or
(c) to issue, register the transfer of or

24



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exchange any Security that has been surrendered for repayment at the
option of the Holder, except the portion, if any, of such Security not to be so
repaid.

SECTION 3.06 Mutilated, Destroyed, Lost and Stolen Securities. If any
mutilated Security is surrendered to the Trustee or PCS, together with, in
proper cases, such security or indemnity as may be required by PCS or the
Trustee to save each of them or any agent of either of them harmless, PCS shall
execute and the Trustee shall authenticate and deliver in exchange therefor a
new Security of the same series and principal amount, containing identical
terms and provisions and bearing a number not contemporaneously outstanding.

If there shall be delivered to PCS and to the Trustee (a) evidence to
their satisfaction of the destruction, loss or theft of any Security and (b)
such security or indemnity as may be required by them to save each of them and
any agent of either of them harmless, then, in the absence of notice to PCS or
the Trustee that such Security has been acquired by a bona fide purchaser, PCS
shall execute and upon its request the Trustee shall authenticate and deliver,
in lieu of any such destroyed, lost or stolen Security, a new Security of the
same series and principal amount, containing identical terms and provisions and
bearing a number not contemporaneously outstanding.

Notwithstanding the provisions of the previous two paragraphs, in case any
such mutilated, destroyed, lost or stolen Security has become or is about to
become due and payable, PCS in its discretion may, instead of issuing a new
Security, pay such Security.

Upon the issuance of any new Security under this Section, PCS 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 3.06 in
lieu of any mutilated, destroyed, lost or stolen Security shall constitute an
original additional contractual obligation of PCS, whether or not the
mutilated, 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 3.06 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 3.07 Payment of Interest, Interest Rights Preserved. Except as
otherwise specified with respect to a series of Securities in accordance with
the provisions of Section 3.01, interest on any Security that 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 at the office or agency of PCS maintained for such purpose
pursuant to Section 10.02; provided, however, that each installment of interest
on any Security may at PCSs option be paid by (a) mailing a check for such
interest, payable to or upon the written order of the Person entitled thereto
pursuant to Section 3.08, to the address of such Person as it appears on

25



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the Security Register, or (b) transfer to an account maintained by the
payee located inside the United States.

Unless otherwise provided as contemplated by Section 3.01, every permanent
global Security will provide that interest, if any, payable on any Interest
Payment Date will be paid to DTC, Euroclear and/or Clearstream, as the case may
be, with respect to that portion of such permanent global Security held for its
account by Cede & Co. for the purpose of permitting such party to credit the
interest received by it in respect of such permanent global Security to the
accounts of the beneficial owners thereof.

Any interest on any Security of any series that is payable, but is not
punctually paid or duly provided for, on any Interest Payment Date shall
forthwith cease to be payable to the registered Holder thereof on the relevant
Regular Record Date by virtue of having been such Holder, and such defaulted
interest and, if applicable, interest on such defaulted interest (to the extent
lawful) at the rate specified in Securities of such series (such defaulted
interest and, if applicable, interest thereon herein collectively called
Defaulted Interest) shall be paid by PCS, at its election in each case, as
provided in clause (a) or (b) below:



| |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
| | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (a) PCS may elect to make payment of any Defaulted Interest to the
Persons in whose names 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. PCS 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 (which shall
not be less than 20 days after such notice is received by the Trustee),
and at the same time PCS shall deposit with the Trustee an amount of
money in the currency or currencies, currency unit or units or composite
currency or currencies in which Securities of such series are payable
(except as otherwise specified pursuant to Section 3.01 for Securities of
such series) equal to the aggregate amount proposed to be paid in respect
of such Defaulted Interest or shall make arrangements satisfactory to the
Trustee for such deposit on or 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
10 days after the receipt by the Trustee of the notice of the proposed
payment. The Trustee shall promptly notify PCS of such Special Record
Date and, in the name and at the expense of PCS, shall cause notice of
the proposed payment of such Defaulted Interest and the Special Record
Date therefor to be given in the manner provided in Section 1.06 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 mailed as aforesaid, such Defaulted Interest shall be paid to
the Persons in whose names 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 (b).
|
| | (b) PCS may make payment of any Defaulted Interest on Securities of
any series in any other lawful manner not inconsistent with the
requirements of any securities                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 

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| |                                                                                                                                                                                                                                                                            
| | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | exchange on which such Securities may be listed, and upon such
notice as may be required by such exchange, if, after notice given by PCS
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 3.07 and Section 3.05,
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
interest accrued and unpaid, and to accrue, which were carried by such other
Security.

SECTION 3.08 Persons Deemed Owners. Prior to due presentment of a
Security for registration of transfer, PCS, the Trustee and any agent of PCS or
the Trustee 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 premium, if any), and (subject to Sections 3.05 and 3.07) interest on,
such Security and for all other purposes whatsoever, whether or not such
Security be overdue, and neither PCS, the Trustee nor any agent of PCS or the
Trustee shall be affected by notice to the contrary.

None of PCS, the Trustee, any Paying Agent or the Security Registrar will
have any responsibility or liability for any aspect of the records relating to
or payments made on account of beneficial ownership interests of a Security in
global form or for maintaining, supervising or reviewing any records relating
to such beneficial ownership interests.

Notwithstanding the foregoing, with respect to any global Security,
nothing herein shall prevent PCS, the Trustee, or any agent of PCS or the
Trustee, from giving effect to any written certification, proxy or other
authorization furnished by any depositary, as a Holder, with respect to such
global Security or impair, as between such depositary and owners of beneficial
interests in such global Security, the operation of customary practices
governing the exercise of the rights of such depositary (or its nominee) as
Holder of such global Security.

SECTION 3.09 Cancellation. All Securities surrendered for payment,
redemption, repayment at the option of the Holder, registration of transfer or
exchange or for credit against any sinking fund payment shall, if surrendered
to any Person other than the Trustee, be delivered to the Trustee, and any such
Securities surrendered directly to the Trustee for any such purpose shall be
promptly canceled by it; provided, however, where the Place of Payment is
located outside of the United States, the Paying Agent at such Place of Payment
may cancel Securities surrendered to it for such purposes prior to delivering
such Securities to the Trustee. PCS may at any time deliver to the Trustee for
cancellation any Securities previously authenticated and delivered hereunder
which PCS 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 PCS has not issued and
sold, and all Securities so delivered shall be promptly canceled by the
Trustee. If PCS shall so acquire any Securities, however, such acquisition
shall not operate as a redemption or satisfaction of the indebtedness
represented by such Securities unless and until the same are surrendered to the
Trustee for cancellation. No Securities shall be authenticated in lieu of or
in exchange for any Securities canceled as provided in this Section 3.09,
except as expressly permitted by this Indenture. Canceled Securities held by
the Trustee shall be destroyed by the

27



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Trustee and the Trustee shall deliver a certificate of such destruction to
PCS, unless by a PCS Order PCS directs their return to it.

SECTION 3.10 Computation of Interest. Except as otherwise specified as
contemplated by Section 3.01 with respect to Securities of any series, interest
on Securities of each series shall be computed on the basis of a 360-day year
consisting of twelve 30-day months. For the purposes of disclosure under the
Interest Act (Canada), the yearly rate of interest to which interest calculated
under a Security for any period in any calendar year (the calculation period)
is equivalent, is the rate payable under a Security in respect of the
calculation period multiplied by a fraction the numerator of which is the
actual number of days in such calendar year and the denominator of which is the
actual number of days in the calculation period.

SECTION 3.11 CUSIP Numbers. PCS may use CUSIP numbers (if then
generally accepted in use), and if so, the Trustee shall use CUSIP numbers in
notices and redemption as a convenience to Holders; provided that any such
notice may state that no representation is made as to the correctness of such
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 numbers. PCS will promptly
notify the Trustee of any change in the CUSIP numbers.

ARTICLE FOUR
SATISFACTION AND DISCHARGE

SECTION 4.01 Satisfaction and Discharge of Indenture. This Indenture
shall upon PCS Request cease to be of further effect with respect to any series
of Securities specified in such PCS Request (except as to any surviving rights
of registration of transfer or exchange of Securities of such series expressly
provided for herein or pursuant hereto, the rights of Holders of Outstanding
Securities to receive, solely from the trust fund described in subclause (ii)
of clause (a) of this Section 4.01, payments in respect of the principal of
(and premium, if any) and interest on such Securities when such payments are
due, and any right to receive Additional Amounts, as provided in Section
10.09), and the Trustee, upon receipt of a PCS Order, and at the expense of
PCS, shall execute proper instruments acknowledging satisfaction and discharge
of this Indenture as to such series when



| |           
| | ----------
| | (a) either



| |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
| | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (i) all Securities of such series theretofore authenticated
and delivered (other than (A) Securities of such series that have
been destroyed, lost or stolen and which have been replaced or paid
as provided in Section 3.06, and (B) Securities of such series for
whose payment money has theretofore been deposited in trust or
segregated and held in trust by PCS and thereafter repaid to PCS or
discharged from such trust, as provided in Section 10.03) have been
delivered to the Trustee for cancellation; or
|
| | (ii) all Securities of such series not theretofore delivered
to the Trustee for cancellation                                                                                                                                                                                                                                                                                                                                                                                                                             

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| |                                                                                                                                                                                                                                      
| | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (A) have become due and payable,                                                                                                                                                                                                     
|
| | (B) will become due and payable at their Stated Maturity
within one year, or                                                                                                                                                         
|
| | (C) if redeemable at the option of PCS, are to be called
for redemption within one year under arrangements
satisfactory to the Trustee for the giving of notice of
redemption by the Trustee in the name, and at the expense, of
PCS,



| |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
| | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | and PCS, in the case of (A), (B) or (C) above, has irrevocably
deposited or caused to be deposited with the Trustee as trust funds
in trust for the purpose an amount in the currency or currencies,
currency unit or units or composite currency or currencies in which
Securities of such series are payable, sufficient to pay and
discharge the entire indebtedness on such Securities not
theretofore delivered to the Trustee for cancellation, for
principal (and premium, if any) and interest, and any Additional
Amounts with respect thereto, to the date of such deposit (in the
case of Securities which have become due and payable) or to the
Stated Maturity or Redemption Date, as the case may be;
|
| | (b) PCS has paid or caused to be paid all other sums payable
hereunder by PCS; and                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  



| |                                                                                                                                                                                                                                                                
| | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (c) PCS has delivered to the Trustee an Officers Certificate and an
Opinion of Counsel, each stating that all conditions precedent herein
provided for relating to the satisfaction and discharge of this Indenture
as to such series have been complied with.

Notwithstanding the satisfaction and discharge of this Indenture, the
obligations of PCS to the Trustee and any predecessor Trustee under Section
6.07, the obligations of PCS to any Authenticating Agent under Section 6.12
and, if money shall have been deposited with and held by the Trustee pursuant
to subclause (ii) of clause (a) of this Section 4.01, the obligations of the
Trustee under Section 4.02 and the last paragraph of Section 10.03 shall
survive.

SECTION 4.02 Application of Trust Funds. Subject to the provisions of the
last paragraph of Section 10.03, all money deposited with the Trustee pursuant
to Section 4.01 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 PCS acting as its own Paying
Agent) as the Trustee may determine, to the Persons entitled thereto, of the
principal (and premium, if any) and any interest and Additional Amounts for
whose payment such money has been deposited with or received by the Trustee,
but such money need not be segregated from other funds except to the extent
required by law.

ARTICLE FIVE
REMEDIES

SECTION 5.01 Events of Default. Event of Default, wherever used herein
with respect to any particular series of Securities, means any one of the
following events (whatever the reason for such Event of Default and whether it
shall be voluntary or involuntary

29



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or be effected by operation of law or pursuant to any judgment, decree or
order of any court or any order, rule or regulation of any administrative or
governmental body):



| |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
| | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (a) default in the payment of any interest upon or any Additional
Amounts payable in respect of any Security of that series, when such
interest or Additional Amounts becomes due and payable, and continuance
of such default for a period of 30 days;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|
| | (b) default in the payment of the principal of (or premium, if any,
on) any Security of that series when due;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|
| | (c) default in the deposit of any sinking fund payment, when and as
due by the terms of any Security of that series and Article Twelve;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|
| | (d) default in the performance, or breach, of any covenant or
warranty of PCS in this Indenture with respect to any Security of that
series (other than a covenant or warranty a default in whose performance
or whose breach is elsewhere in this Section 5.01 specifically dealt
with), and continuance of such default or breach for a period of 60 days
after there has been given, by registered or certified mail, to PCS by
the Trustee or to PCS and the Trustee by the Holders of at least 25% in
principal amount of Outstanding Securities of that series a written
notice specifying such default or breach and requiring it to be remedied
and stating that such notice is a Notice of Default hereunder;                                                                                                                                                                                                                                                                                                                                                                                                      
|
| | (e) default under any bond, debenture, note or other evidence of
indebtedness for money borrowed by PCS (including obligations under
leases required to be capitalized on the balance sheet of the lessee
under Canadian GAAP, but not including any indebtedness or obligations
for which recourse is limited to property purchased) in an aggregate
principal amount in excess of $100,000,000 or under any mortgage,
indenture or instrument under which there may be issued or by which there
may be secured or evidenced any indebtedness for money borrowed by PCS
(including such leases but not including such indebtedness or obligations
for which recourse is limited to property purchased) in an aggregate
principal amount in excess of $100,000,000 by PCS, whether such
indebtedness now exists or shall hereafter be created, which default
shall have resulted in such indebtedness becoming or being declared due
and payable prior to the date on which it would otherwise have become due
and payable or such obligations being accelerated, without such
acceleration having been rescinded or annulled;
|
| | (f) PCS or any Significant Subsidiary pursuant to or within the
meaning of any Bankruptcy Law:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                



| |                                                                                                   
| | --------------------------------------------------------------------------------------------------
| | (i) commences a voluntary case or proceeding,                                                     
|
| | (ii) consents to the entry of an order for relief against it
in an involuntary case or proceeding,
|
| | (iii) consents to the appointment of a Custodian of it or for
all or a majority of its property,  

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| |                                                                                                                                                                                   
| | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (iv) makes a general assignment for the benefit of its
creditors or files a proposed or other scheme of arrangement
involving the rescheduling or composition of its indebtedness,
|
| | (v) files a petition in bankruptcy or an answer or consent
seeking reorganization or relief, or                                                                                   
|
| | (vi) consents to the filing of such petition in bankruptcy;                                                                                                                       



| |                                                                                               
| | ----------------------------------------------------------------------------------------------
| | (g) a court of competent jurisdiction enters an order or decree
under any Bankruptcy Law that:



| |                                                                                                                      
| | ---------------------------------------------------------------------------------------------------------------------
| | (i) is for relief against PCS or any Significant Subsidiary in
an involuntary case,                                  
|
| | (ii) appoints a Custodian of PCS or any Significant Subsidiary
or for all or a majority of either of its property, or
|
| | (iii) orders the liquidation, winding up, dissolution or
reorganization of PCS or any Significant Subsidiary,        

and the order or decree remains unstayed and in effect for 90 days;



| |                                                                                                                                                                                                                      
| | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (h) a Custodian is appointed out of court with respect to PCS, or
with respect to all or a majority of the property of PCS, or any
encumbrancer shall take possession of all or a majority of the property
of PCS; or
|
| | (i) any other Event of Default provided with respect to Securities
of that series.                                                                                                                                   

As used in this Section 5.01, the term Bankruptcy Law means Title 11, U.S.
Code, the Bankruptcy and Insolvency Act (Canada) or any similar Canadian or
United States Federal, State or provincial law or the law of any other
jurisdiction relating to bankruptcy, insolvency, winding up, liquidation,
reorganization or for the relief of debtors, and the term Custodian means any
receiver, trustee, assignee, liquidator or other similar official under any
Bankruptcy Law.

SECTION 5.02 Acceleration of Maturity; Rescission and Annulment. If an
Event of Default with respect to Securities of any series at the time
Outstanding occurs and is continuing, then and in every such case the Trustee
shall at the written request of the Holders of not less than 25% in principal
amount of Outstanding Securities of that series, declare the principal (or, if
any Securities are Original Issue Discount Securities or Indexed Securities,
such portion of the principal as may be specified in the terms thereof) of all
Securities of that series to be due and payable immediately, by a notice in
writing to PCS, and upon any such declaration such principal or specified
portion thereof 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 Five provided, the Holders of a

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majority in principal amount of Outstanding Securities of that series, by
written notice to PCS and the Trustee, may rescind and annul such declaration
and its consequences if:



| |                                                                                                                                                                                                                                                                    
| | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (a) PCS has paid or deposited with the Trustee a sum sufficient to
pay in the currency or currency unit or composite currency in which
Securities of such series are payable (except as otherwise specified
pursuant to Section 301 for Securities of such series):



| |                                                                                                                                                                                                                                                      
| | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (i) all overdue installments of interest on and any Additional
Amounts payable in respect of all Outstanding Securities of that
series,                                                                                                              
|
| | (ii) the principal of (and premium, if any) any Outstanding
Securities of that series which have become due otherwise than by
such declaration of acceleration and interest thereon at the rate
or rates borne by or provided for in such Securities,
|
| | (iii) to the extent that payment of such interest is lawful,
interest upon overdue installments of interest and any Additional
Amounts at the rate or rates borne by or provided for in such
Securities, and                                         
|
| | (iv) 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                                                                            



| |                                                                                                                                                                                                                                                                                                         
| | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (b) all Events of Default with respect to Securities of that series,
other than the nonpayment of the principal of (or premium, if any) or
interest on 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 5.03 Collection of Indebtedness and Suits for Enforcement by
Trustee. PCS covenants that if:



| |                                                                                                                                                                                                                                                      
| | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (a) default is made in the payment of any installment of interest or
Additional Amounts, if any, on any Security of any series when such
interest or Additional Amount becomes due and payable and such default
continues for a period of 30 days, or
|
| | (b) default is made in the payment of the principal of (or premium,
if any) any Security of any series at its Maturity,                                                                                                                              

then PCS will, upon demand of the Trustee, pay to the Trustee, for the benefit
of the Holders of such Securities of such series, the whole amount then due and
payable on such Securities for principal (and premium, if any) and interest and
Additional Amounts, with interest upon any overdue principal (and premium, if
any) and, to the extent that payment of such interest shall be legally
enforceable, upon any overdue installments of interest or Additional Amounts,
if any, at the rate or rates borne by or provided for in such Securities, and,
in addition thereto, such further

32



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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.

If PCS fails to pay such amounts forthwith upon such demand, the Trustee,
in its own name and as trustee of an express trust, may institute a judicial
proceeding for the collection of the sums so due and unpaid, and may prosecute
such proceeding to judgment or final decree, and may enforce the same against
PCS or any other obligor upon such Securities of such series and collect the
moneys adjudged or decreed to be payable in the manner provided by law out of
the property of PCS or any other obligor upon such Securities of such series,
wherever situated.

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 5.04 Trustee May File Proofs of Claim. In case of the pendency of
any receivership, insolvency, liquidation, bankruptcy, reorganization,
arrangement, adjustment, composition or other judicial proceeding relative to
PCS or any other obligor upon Securities or the property of PCS or of such
other obligor or their creditors, the Trustee (irrespective of whether the
principal of Securities of any series shall then be due and payable as therein
expressed or by declaration or otherwise and irrespective of whether the
Trustee shall have made any demand on PCS for the payment of overdue principal,
premium, if any, or interest) shall be entitled and empowered, by intervention
in such proceeding or otherwise:



| |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
| | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (a) to file and prove a claim for the whole amount, or such lesser
amount as may be provided for in Securities of such series, of principal
(and premium, if any) and interest and Additional Amounts, if any, owing
and unpaid in respect of Securities and to file such other papers or
documents as may be necessary or advisable in order to have the claims of
the Trustee (including any claim for the reasonable compensation,
expenses, disbursements and advances of the Trustee, its agents and
counsel) and of the Holders allowed in such judicial proceeding, and
|
| | (b) 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 of Securities of such series 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 to it for the
reasonable compensation, expenses, disbursements and advances of the Trustee
and any predecessor Trustee, their agents and counsel, and any other amounts
due the Trustee or any predecessor Trustee under Section 6.07.

33



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Nothing herein contained shall be deemed to authorize the Trustee to
authorize or consent to or accept or adopt on behalf of any Holder of a
Security any plan of reorganization, arrangement, adjustment or composition
affecting Securities or the rights of any Holder thereof, or to authorize the
Trustee to vote in respect of the claim of any Holder of a Security in any such
proceeding,

SECTION 5.05 Trustee May Enforce Claims Without Possession of Securities.
All rights of action and claims under this Indenture or any Securities may be
prosecuted and enforced by the Trustee without the possession of any 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, be for the
ratable benefit of the Holders of Securities in respect of which such judgment
has been recovered.

SECTION 5.06 Application of Money Collected. Any money collected by the
Trustee pursuant to this Article Five 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 (or premium, if any) or interest and any
Additional Amounts, upon presentation of 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 and any
predecessor Trustee under Section 6.07;                                                                                                                                                                                                                                                                                                                                                            
|
| | Second: To the payment of the amounts then due and unpaid upon
Securities for principal (and premium, if any) and interest and any
Additional Amounts payable, 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 aggregate amounts due and payable
on such Securities for principal (and premium, if any), interest and
Additional Amounts, respectively; and
|
| | Third: To the payment of the remainder, if any, to PCS.                                                                                                                                                                                                                                                                                                                                                                                                         

SECTION 5.07 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, or for the appointment of a receiver or trustee, or
for any other remedy hereunder, unless:



| |                                                                                                                                                                                                                                                    
| | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (a) such Holder has previously given written notice to the Trustee
of a continuing Event of Default with respect to Securities of that
series;                                                                                                     
|
| | (b) the Holders of not less than 25% in principal amount of
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;
|
| | (c) such Holder or Holders have offered to the Trustee indemnity
reasonably satisfactory to the Trustee against the costs, expenses and
liabilities to be incurred in compliance with such request;                                                

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| |                                                                                                                                                                                                           
| | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (d) the Trustee for 60 days after its receipt of such notice,
request and offer of indemnity has failed to institute any such
proceeding; and                                                             
|
| | (e) 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 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 such
Holders.

SECTION 5.08 Unconditional Right of Holders to Receive Principal, Premium,
if any, Interest and Additional Amounts. 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 of (and
premium, if any) and, subject to Sections 3.05 and 3.07, interest on, and any
Additional Amounts in respect of, such Security on the respective due dates
expressed in such Security (or, in the case of redemption, on the Redemption
Date) and to institute suit for the enforcement of any such payment, and such
rights shall not be impaired without the consent of such Holder.

SECTION 5.09 Restoration of Rights and Remedies. If the Trustee or any
Holder of a Security 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, PCS, the Trustee and the Holders of
Securities shall, subject to any determination in such proceeding, 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 5.10 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 3.06, no right or remedy
herein conferred upon or reserved to the Trustee or to the Holders of
Securities 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 5.11 Delay or Omission Not Waiver. No delay or omission of the
Trustee or of any Holder of any Security 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.
Every right and remedy given by this Article Five 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 of Securities, as the case
may be.

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SECTION 5.12 Control by Holders of Securities. The Holders of not less
than a majority in principal amount of Outstanding Securities of any 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 Securities of such series,
provided that



| |                                                                                                                                                                               
| | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (a) such direction shall not be in conflict with any rule of law or
with this Indenture,                                                                                      
|
| | (b) the Trustee may take any other action deemed proper by the
Trustee that is not inconsistent with such direction, and                                                      
|
| | (c) the Trustee need not take any action that might involve it in
personal liability or be unduly prejudicial to the Holders of Securities
of such series not joining therein.

SECTION 5.13 Waiver of Past Defaults. The Holders of not less than a
majority in principal amount of Outstanding Securities of any series may on
behalf of the Holders of all Securities of such series waive any past default
hereunder with respect to such series and its consequences, except a default



| |                                                                                                                                                                                               
| | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (a) in the payment of the principal of (or premium, if any) or
interest on or Additional Amounts payable in respect of any Security of
such series, or                                        
|
| | (b) in respect of a covenant or provision hereof that 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 Event of Default or impair any right consequent thereon.

SECTION 5.14 Waiver of Usury, Stay or Extension Laws. PCS covenants (to
the extent that it may lawfully do so) that it will not at any time insist
upon, or plead, or in any manner whatsoever claim, or take the benefit or
advantage of, any usury, stay or extension law wherever enacted, now or at any
time hereafter in force, which may affect the covenants or the performance of
this Indenture; and PCS (to the extent that it may lawfully do so) hereby
expressly waives all benefit or advantage of any such law, and covenants that
it will not hinder, delay or impede the execution of any power herein granted
to the Trustee, but will suffer and permit the execution of every such power as
though no such law had been enacted.

SECTION 5.15 Undertaking for Costs. All parties to this Indenture agree,
and each Holder of any Security by acceptance thereof shall be deemed to have
agreed, that any court may in its discretion require, 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 or omitted by it as Trustee, the filing by any
party litigant in such suit of any undertaking to pay the costs of such suit,
and that such court may in its discretion assess reasonable costs, including
reasonable attorneys fees,

36



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against any party litigant in such suit having due regard to the merits
and good faith of the claims or defenses made by such party litigant; but the
provisions of this Section 5.15 shall not apply to any suit instituted by the
Trustee, to any suit instituted by any Holder, or group of Holders, holding in
the aggregate more than 10% in principal amount of Outstanding Securities, or
to any suit instituted by any Holder for the enforcement of the payment of the
principal of (or premium, if any) or interest on any Security on or after the
respective Stated Maturities expressed in such Security (or, in the case of
redemption, on or after the Redemption Date).

ARTICLE SIX
THE TRUSTEE

SECTION 6.01 Duties of Trustee.



| |                                                                                                                                                                                                                                                                                                                             
| | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (a) If an Event of Default 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 their 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:                                                                                                                                                                                                                                                                   



| |                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
| | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (i) the Trustee need perform only those duties that are
specifically set forth in this Indenture and no others shall be
inferred or implied; and                                                                                                                                                                                                                                                                                                                           
|
| | (ii) in the absence of bad faith on its part, the Trustee may
conclusively rely, as to the truth of the statements and the
correctness of the opinions expressed therein, upon certificates or
opinions furnished to the Trustee and conforming to the
requirements of this Indenture; however, the Trustee shall examine
the certificates and opinions required to be delivered to it
pursuant to the terms of this Indenture to determine whether or not
they so conform.



| |                                                                                                                                                               
| | --------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (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:



| |                                                                                                                                                                                                                                                    
| | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (i) this paragraph does not limit the effect of paragraph (b)
of this Section;                                                                                                                                                                     
|
| | (ii) 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;                                                
|
| | (iii) 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 5.12; and                                                               
|
| | (iv) no provision of the 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

37



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| |                                                                                                                                                               
| | --------------------------------------------------------------------------------------------------------------------------------------------------------------
| | 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.



| |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
| | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (d) Every provision of this Indenture that in any way relates to the
Trustee is subject to the above paragraphs of this Section. The Trustee
may refuse to perform any duty or exercise any right or power under this
Indenture (including with respect to Section 5.12) unless it receives
indemnity reasonably satisfactory to it for actions taken under this
Indenture. The Trustee shall not be liable for interest on any money
received by it except as the Trustee may agree in writing with PCS.
Money held in trust by the Trustee need not be segregated from other
funds except to the extent required by law.

SECTION 6.02 Notice of Defaults. Within 90 days after the occurrence of
any default hereunder with respect to Securities of any series, the Trustee
shall transmit in the manner and to the extent provided in TIA Section 313(c),
notice of such default hereunder known to the Trustee, unless such default
shall have been cured or waived; provided, however, that, except in the case of
a default in the payment of the principal of (or premium, if any) or interest
on or any Additional Amounts with respect to any Security of such series, or in
the payment of any sinking fund installment with respect to Securities of such
series, the Trustee shall be protected in withholding such notice if and so
long as Responsible Officers of the Trustee in good faith determine that the
withholding of such notice is in the interests of the Holders of Securities of
such series; and provided further that in the case of any default or breach of
the character specified in Section 5.01(d) with respect to Securities of such
series, no such notice to Holders shall be given until at least 60 days after
the occurrence thereof. For the purpose of this Section 6.02, the term
default means any event that is, or after notice or lapse of time or both
would become, an Event of Default with respect to Securities of such series.

SECTION 6.03 Certain Rights of Trustee. Subject to the provisions of TIA
Section 315(a) through 315(d):



| |                                                                                                                                                                                                                                                                                                                                                                                             
| | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (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, coupon 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 PCS mentioned herein shall be
sufficiently evidenced by a PCS Request or PCS Order (other than delivery
of any Security to the Trustee for authentication and delivery pursuant
to Section 3.03 which shall be sufficiently evidenced as provided
therein) 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 Officers Certificate;                                        

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| |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
| | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (d) the Trustee may consult with counsel and the 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 of Securities of any series pursuant to
this Indenture, unless such Holders shall have offered to the Trustee
security or indemnity reasonably satisfactory 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, coupon 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 be entitled to make reasonable examination of the books, records
and premises of PCS, personally or by agent or attorney following
reasonable notice to PCS;
|
| | (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; provided that the Trustee shall be required to terminate
any such agent if it has actual knowledge of any failure by such agent to
perform its delegated duties; and                                                                                                                                                                                  
|
| | (h) the Trustee shall not be liable for any action taken, suffered
or omitted by it in good faith and reasonably believed by it to be
authorized or within the discretion or rights or powers conferred upon it
by this Indenture.                                                                                                                                                                                                                                                                                                                                                                                                                                   

The Trustee shall not be required 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.

SECTION 6.04 Not Responsible for Recitals or Issuance of Securities. The
recitals contained herein and in the Securities, except the Trustees
certificate of authentication, shall be taken as the statements of PCS, and
neither the Trustee nor any Authenticating Agent assumes any responsibility for
their correctness. The Trustee makes no representations as to the validity or
sufficiency of this Indenture or of Securities, except that the Trustee
represents that it is duly authorized to execute and deliver this Indenture,
authenticate Securities and perform its obligations hereunder and that the
statements made by it in a Statement of Eligibility on Form T-1 supplied to PCS
are true and accurate, subject to the qualifications set forth therein.
Neither the Trustee nor any Authenticating Agent shall be accountable for the
use or application by PCS of Securities or the proceeds thereof

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SECTION 6.05 May Hold Securities. The Trustee, any Paying Agent, Security
Registrar, Authenticating Agent or any other agent of PCS, in its individual or
any other capacity, may become the owner or pledgee of Securities and, subject
to TIA Sections 310(b) and 311, may otherwise deal with PCS with the same
rights it would have if it were not Trustee, Paying Agent, Security Registrar,
Authenticating Agent or such other agent.

SECTION 6.06 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 with PCS.

SECTION 6.07 Compensation and Reimbursement. PCS agrees:



| |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
| | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (a) to pay to the Trustee from time to time compensation agreed to
with the Trustee 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);                                                                                                                                                                                                                              
|
| | (b) except as otherwise expressly provided herein, to reimburse each
of the Trustee and any predecessor Trustee upon its 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 the expenses and disbursements of its agents
and counsel), except any such expense, disbursement or advance as may be
attributable to its negligence or bad faith; and
|
| | (c) to indemnify each of the Trustee and any predecessor Trustee
for, and to hold it harmless against, any loss, liability or expense
incurred without negligence or bad faith on its own part, arising out of
or in connection with the acceptance or administration of the trust or
trusts hereunder, including the 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.         

When the Trustee incurs expenses or renders services in connection with an
Event of Default specified in Sections 5.01(f) or 5.01(g), the expenses
(including the reasonable charges and expenses of its counsel) and the
compensation for the services are intended to constitute expenses of
administration under any applicable Federal or state bankruptcy, insolvency or
other similar law.

As security for the performance of the obligations of PCS under this
Section 6.07, the Trustee shall have a lien prior to the Securities upon all
property and funds held or collected by the Trustee as such, except funds held
in trust for the payment of principal of (or premium, if any) or interest on or
any Additional Amounts with respect to any particular Securities.

The provisions of this Section 6.07 shall survive the termination of this
Indenture.

SECTION 6.08 Corporate Trustee Required; Eligibility; Conflicting
Interests. There shall at all times be a Trustee hereunder which shall be
eligible to act as Trustee under TIA Section 310(a)(1) and shall have a
combined capital and surplus of at least $50,000,000, which in the case of the
Trustee named in the first paragraph of this Indenture shall mean that (a) the

40



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combined capital and surplus of such Trustee plus (b) the combined capital
and surplus of any Corporation of which such Trustee is a wholly owned
subsidiary shall be at least $50,000,000. If such corporation publishes
reports of condition at least annually, pursuant to law or the requirements of
Federal, State, Territorial or District of Columbia supervising or examining
authority, then for the purposes of this Section, the combined capital and
surplus of such corporation 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 Six. If the Trustee has or
shall acquire a conflicting interest within the meaning of TIA Section 310(b),
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 TIA and this
Indenture.

SECTION 6.09 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 Six shall become effective until the acceptance of
appointment by the successor Trustee in accordance with the applicable
requirements of Section 6.10.

(b) The Trustee may resign at any time with respect to Securities of one
or more series by giving written notice thereof to PCS. If an instrument of
acceptance by a successor Trustee 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.

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

(d) If at anytime:



| |                                                                                                                                                                                                                                                                                                                                   
| | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (i) the Trustee shall fail to comply with the provisions of
TIA Section 310(b) after written request therefor by PCS or by any
Holder of a Security who has been a bona fide Holder of a Security
for at least six months,                                                                                                        
|
| | (ii) the Trustee shall cease to be eligible under Section 6.08
and shall fail to resign after written request therefor by PCS or
by any Holder of a Security who has been a bona fide Holder of a
Security for at least six months, or                                                                                            
|
| | (iii) 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) PCS by or pursuant to a Board Resolution may remove
the Trustee and appoint a successor Trustee with respect to all Securities, or
(ii) subject to TIA Section 315(e), any Holder of a Security who has been a
bona fide Holder of a Security for at least six months may, on behalf of
himself and all others similarly situated, petition any court of competent

41



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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 become incapable of acting,
or if a vacancy shall occur in the office of Trustee for any cause with respect
to Securities of one or more series, PCS, by or pursuant to a Board Resolution,
shall promptly appoint a successor Trustee or Trustees with respect to
Securities of that or those series (it being understood that any such successor
Trustee may be appointed with respect to Securities of one or more or all of
such series and that at any time there shall be only one Trustee with respect
to Securities of any particular series). If within one year after such
resignation, removal or incapability, or the occurrence of such vacancy, a
successor Trustee with respect to Securities of any series shall be appointed
by Act of the Holders of a majority in principal amount of Outstanding
Securities of such series delivered to PCS and the retiring Trustee, the
successor Trustee so appointed shall, forthwith upon its acceptance of such
appointment, become the successor Trustee with respect to Securities of such
series and to that extent supersede the successor Trustee appointed by PCS. If
no successor Trustee with respect to Securities of any series shall have been
so appointed by PCS or the Holders of Securities and accepted appointment in
the manner hereinafter provided, any Holder of a Security who has been a bona
fide Holder of a Security of such series for at least six months may, on behalf
of himself and all others similarly situated, petition any court of competent
jurisdiction for the appointment of a successor Trustee with respect to
Securities of such series. Any resigning or removed Trustee shall be entitled
to all benefits, indemnities, exculpations and protections available to it as
Trustee as to any actions taken or omitted to be taken by it while it was
Trustee under this Indenture.

(f) PCS shall give notice of each resignation and each removal of the
Trustee with respect to Securities of any series and each appointment of a
successor Trustee with respect to Securities of any series in the manner
provided for notices to the Holders of Securities in Section 1.06. Each notice
shall include the name of the successor Trustee with respect to Securities of
such series and the address of its Corporate Trust Office.

SECTION 6.10 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 shall execute, acknowledge and deliver to PCS 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 request of PCS 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
nevertheless to its claim, if any, provided for in Section 6.07.

(b) In case of the appointment hereunder of a successor Trustee with
respect to Securities of one or more (but not all) series, PCS, the retiring
Trustee and each successor Trustee with respect to Securities of one or more
series shall execute and deliver an indenture supplemental hereto, pursuant to
Article Nine, wherein each successor Trustee shall accept such appointment and
which (i) shall contain such provisions as shall be necessary or desirable to

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transfer and confirm to, and to vest in, each successor Trustee all the
rights, powers, trusts and duties of the retiring Trustee with respect to
Securities of that or those series to which the appointment of such successor
Trustee relates, (ii) 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 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 (iii) 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 Trustees 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 Securities of that or those series to
which the appointment of such successor Trustee relates; but, on request of PCS
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 Securities of that or those series to which
the appointment of such successor Trustee relates.

(c) Upon request of any such successor Trustee, PCS 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 paragraph
(a) or (b) of this Section 6.10, as the case may be.

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

SECTION 6.11 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 of 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 Six, 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 Securities so authenticated with the same
effect as if such successor Trustee had itself authenticated such Securities.
In case any Securities shall not have been authenticated by such predecessor
Trustee, any such successor Trustee may authenticate and deliver such
Securities, in either its own name or that of its predecessor Trustee, with the
full force and effect which this Indenture provides for the certificate of
authentication of the Trustee.

SECTION 6.12 Appointment of Authenticating Agent. At any time when any
Securities remain Outstanding, the Trustee may 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

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Trustee to authenticate Securities of such series issued upon exchange,
registration of transfer or partial redemption or repayment thereof, 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. Any such appointment shall be evidenced by an instrument in
writing signed by a Responsible Officer of the Trustee, a copy of which
instrument shall be promptly furnished to PCS and the Trustee shall give
written notice of such appointment to all Holders of Securities of the series
with respect to which such Authenticating Agent will serve in the manner
provided for in Section 1.06. 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 PCS and
shall at all times be a bank or trust company or corporation organized and
doing business and in good standing under the laws of the United States of
America or of any State or the District of Columbia, authorized under such laws
to act as Authenticating Agent, subject to supervision or examination by
Federal or State authorities and having a combined capital and surplus of at
least $50,000,000. If such Authenticating Agent publishes reports of condition
at least annually, pursuant to law or the requirements of the aforesaid
supervising or examining authority, then for the purposes of this Section 6.12,
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. In case at any time an Authenticating Agent shall
cease to be eligible in accordance with the provisions of this Section 6.12,
such Authenticating Agent shall resign immediately in the manner and with the
effect specified in this Section 6.12.

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 6.12, without the execution or filing of any paper or
further act on the part of the Trustee or the Authenticating Agent.

An Authenticating Agent for any series of Securities may at any time
resign by giving written notice of resignation to the Trustee for such series
and to PCS. The Trustee for any series of Securities may at any time terminate
the agency of an Authenticating Agent by giving written notice of termination
to such Authenticating Agent and to PCS. 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 6.12, the Trustee for such series may appoint a
successor Authenticating Agent which shall be acceptable to PCS and shall give
notice of such appointment to all Holders of Securities of the series with
respect to which such Authenticating Agent will serve in the manner set forth
in Section 1.06. 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 herein. No successor Authenticating Agent shall be
appointed unless eligible under the provisions of this Section 6.12.

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PCS agrees to pay to each Authenticating Agent from time to time
reasonable compensation including reimbursement of its reasonable expenses for
its services under this Section 6.12.

If an appointment with respect to one or more series is made pursuant to
this Section 6.12, Securities of such series may have endorsed thereon, in
addition to or in lieu of the Trustees certificate of authentication, an
alternate certificate of authentication substantially 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 Signatory   

SECTION 6.13 Preferential Collection of Claims Against the Issuers. The
Trustee is subject to Section 311(a) of the TIA, except with respect to any
creditor relationship listed in Section 311(b) of the TIA. A Trustee who has
resigned or been removed is subject to Section 311(a) of the TIA to the extent
indicated.

ARTICLE SEVEN
HOLDERS LISTS AND REPORTS BY TRUSTEE AND PCS

SECTION 7.01 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 of Securities
received by the Trustee in its capacity as Security Registrar, if so
acting.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
|
| | (b) If three or more Holders of a series of Securities (hereinafter
referred to as applicants) apply in writing to the Trustee, and furnish
to the Trustee reasonable proof that each such applicant has owned a
Security for a period of at least six months immediately preceding the
date of such application, and such application states that the applicants
desire to communicate with other Holders of Securities of a particular
series (in which case the applicants must hold Securities of such series)
or with all Holders of Securities with respect to their rights under this
Indenture or under the Securities and is accompanied by a copy of the
form of proxy or other communication which such applicants propose to
transmit, then the Trustee shall, within five Business Days after the
receipt of such application, at its election, either:

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| |                                                                                                                                                                                                                                                                                                                                                                                                                   
| | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (i) afford such applicants access to the information preserved
at the time by the Trustee in accordance with Section 7.01(a); or                                                                                                                                                                                                                                                                                  
|
| | (ii) inform such applicants as to the approximate number of
Holders of Securities of such series or of all Securities, as the
case may be, whose names and addresses appear in the information
preserved at the time by the Trustee in accordance with Section
7.01(a), and as to the approximate cost of mailing to such Holders
the form of proxy or other communication, if any, specified in such
application.



| |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
| | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | If the Trustee shall elect not to afford such applicants access to such
information, the Trustee shall, upon the written request of such
applicants, mail to each Holder whose name and address appears in the
information preserved at the time by the Trustee in accordance with
Section 7.01(a), a copy of the form of proxy or other communication that
is specified in such request, with reasonable promptness after a tender
to the Trustee of the material to be mailed and of payment, or provision
for the payment, of the reasonable expenses of mailing, unless within
five days after such tender, the Trustee shall mail to such applicants
and file with the Commission, together with a copy of the material to be
mailed, a written statement to the effect that, in the opinion of the
Trustee, such mailing would be contrary to the best interests of the
Holders or would be in violation of applicable law. Such written
statement shall specify the basis of such opinion. If the Commission,
after opportunity for a hearing upon the objections specified in the
written statement so filed, shall enter an order refusing to sustain any
of such objections or if, after the entry of an order sustaining one or
more of such objections, the Commission shall find, after notice and
opportunity for hearing, that all the objections so sustained have been
met and shall enter an order so declaring, the Trustee shall mail copies
of such material to all such Holders with reasonable promptness after the
entry of such order and the renewal of such tender, otherwise the Trustee
shall be relieved of any obligation or duty to such applicants respecting
their application.

SECTION 7.02 Disclosure of Names and Addresses of Holders. Every Holder
of Securities, by receiving and holding the same, agrees with PCS and the
Trustee that neither PCS nor the Trustee nor any Authenticating Agent nor any
Paying Agent nor any Security Registrar shall be held accountable by reason of
the disclosure of any information as to the names and addresses of the Holders
of Securities in accordance with TIA Section 312 or any statute of Canada or
any province or territory thereof, regardless of the source from which such
information was derived, and that the Trustee shall not be held accountable by
reason of mailing any material pursuant to a request made under TIA Section
312(b).

SECTION 7.03 Reports by Trustee. Within 60 days after May 15 of each year
commencing with the first May 15 after the first issuance of Securities
pursuant to this Indenture, the Trustee shall transmit by mail to all Holders
of Securities as provided in TIA Section 313(c) a brief report dated as of such
May 15 if required by TIA Section 313(a).

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

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and with the Company. The Company will promptly notify the Trustee when
any Securities are listed on any exchange.

SECTION 7.04 Reports by PCS. PCS will:



| |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
| | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (a) file with the Trustee, within 15 days after PCS is required to
file the same with the Commission, copies 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 PCS may be required to file with the
Commission pursuant to Section 13 or Section 15(d) of the Exchange Act;
or, if PCS is not required to file information, documents or reports
pursuant to either of such Sections, then it will file with the Trustee,
in accordance with rules and regulations prescribed from time to time by
the Commission, such of the supplementary and periodic information,
documents and reports 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) file with the Trustee and the Commission, in accordance with
rules and regulations prescribed from time to time by the Commission,
such additional information, documents and reports with respect to
compliance by PCS with the conditions and covenants of this Indenture as
may be required from time to time by such rules and regulations;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|
| | (c) transmit or cause to be transmitted by mail to the Holders of
Securities, within 30 days after the filing thereof with the Trustee, in
the manner and to the extent provided in TIA Section 313(c), such
summaries of any information, documents and reports required to be filed
by PCS pursuant to paragraphs (a) and (b) of this Section 7.04 as may be
required by rules and regulations prescribed from time to time by the
Commission; and                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|
| | (d) file any report required by any statute of Canada or any
province or territory thereof.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       

SECTION 7.05 PCS to Furnish Trustee Names and Addresses of Holders. PCS
will furnish or cause to be furnished to the Trustee:



| |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
| | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (a) semi-annually, not later than 15 days after the Regular Record
Date for interest for each series of Securities, a list, in such form as
the Trustee may reasonably require, of the names and addresses of the
Holders of Securities of such series as of such Regular Record Date, or
if there is no Regular Record Date for interest for such series of
Securities, semi-annually, upon such dates as are set forth in the Board
Resolution or indenture supplemental hereto authorizing such series, and
|
| | (b) at such other times as the Trustee may request in writing,
within 30 days after the receipt by PCS 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,                                                                                                                                                                                                                                                                   

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provided, however, that, so long as the Trustee is the Security Registrar, no
such list shall be required to be furnished.

ARTICLE EIGHT
CONSOLIDATION, MERGER, SALE, LEASE OR CONVEYANCE

SECTION 8.01 Consolidations and Mergers of PCS and Sales, Leases and
Conveyances Permitted Subject to Certain Conditions. PCS may amalgamate or
consolidate with, or sell, lease or convey all or substantially all of its
assets to, or merge with or into any other entity, provided that in any such
case, (a) either PCS shall be the continuing entity or one of the continuing
entities, or the successor entity (the successor entity) shall be an entity
organized and existing under the laws of Canada or a province or territory
thereof or the United States or a State thereof or the District of Columbia,
and such successor entity shall expressly assume the due and punctual payment
of the principal of (and premium, if any) and any interest on all Securities,
according to their tenor, and the due and punctual performance and observance
of all of the covenants and conditions of this Indenture to be performed by
PCS, by supplemental indenture, complying with Article Nine, satisfactory to
the Trustee, executed and delivered to the Trustee by such successor entity,
and (b) immediately after giving effect to such transaction and treating any
indebtedness which becomes an obligation of PCS or the successor entity as a
result thereof as having been incurred by PCS or such successor entity at the
time of such transaction, no Event of Default, and no event which, after notice
or the lapse of time, or both, would become an Event of Default, shall have
occurred and be continuing.

SECTION 8.02 Rights and Duties of Successor Entity. In case of any such
consolidation, merger, sale, lease or conveyance and upon any such assumption
by the successor entity, such successor entity shall succeed to and be
substituted for PCS, with the same effect as if it had been named herein, and
the predecessor entity, except in the event of a lease, shall be relieved of
any further obligation under this Indenture and the Securities. Such successor
entity thereupon may cause to be signed, and may issue either in its own name
or in the name of PCS, any or all Securities issuable hereunder which
theretofore shall not have been signed by PCS and delivered to the Trustee;
and, upon the order of such successor entity, instead of PCS, and subject to
all the terms, conditions and limitations in this Indenture prescribed, the
Trustee shall authenticate and shall deliver any Securities which previously
shall have been signed and delivered by the officers of PCS to the Trustee for
authentication, and any Securities which such successor entity thereafter shall
cause to be signed and delivered to the Trustee for that purpose. All
Securities so issued shall in all respects have the same legal rank and benefit
under this Indenture as Securities theretofore or thereafter issued in
accordance with the terms of this Indenture as though all of such Securities
had been issued at the date of the execution hereof.

In case of any such amalgamation, consolidation, merger, sale, lease or
conveyance, such changes in phraseology and form (but not in substance) may be
made in Securities thereafter to be issued as may be appropriate.

SECTION 8.03 Securities to Be Secured in Certain Events. If, upon any
consolidation or amalgamation of PCS with or merger of PCS into any other
Person, or upon any conveyance, lease or transfer of the properties and assets
of PCS substantially as an entirety to any other Person, any of the property
and assets of PCS would thereupon become subject to any

48



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Lien, then unless such Lien could be created pursuant to Section 10.10
without equally and ratably securing the Securities, PCS, prior to or
simultaneously with such consolidation, amalgamation, merger, conveyance, lease
or transfer, will secure Securities Outstanding hereunder (together with, if
PCS shall so determine, any other indebtedness of PCS now existing or hereafter
created which is not subordinate to such Securities) equally and ratably with
(or prior to) the indebtedness which upon such consolidation, amalgamation,
merger, conveyance, lease or transfer is to become secured by such Lien, or
will cause such Securities to be so secured; provided that, for the purpose of
providing such equal and ratable security, the principal amount of Original
Issue Discount Securities and Indexed Securities shall mean that amount which
would at the time of making such effective provision be due and payable
pursuant to Section 5.02 and the terms of such Original Issue Discount
Securities and Indexed Securities upon a declaration of acceleration of the
Maturity thereof, and the extent of such equal and ratable security shall be
adjusted, to the extent permitted by law, as and when said amount changes over
time pursuant to the terms of such Original Issue Discount Securities and
Indexed Securities.

SECTION 8.04 Officers Certificate and Opinion of Counsel. Any
amalgamation, consolidation, merger, sale, lease or conveyance permitted under
Section 8.01 is also subject to the condition that the Trustee receive an
Officers Certificate and an Opinion of Counsel to the effect that any such
consolidation, merger, sale, lease or conveyance, and the assumption by any
successor entity, complies with the provisions of this Article Eight and that
all conditions precedent herein provided for relating to such transaction have
been complied with.

ARTICLE NINE

SUPPLEMENTAL INDENTURES

SECTION 9.01 Supplemental Indentures Without Consent of Holders. Without
the consent of any Holders of Securities, PCS, when authorized by or pursuant
to 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 satisfactory to
the Trustee, for any of the following purposes:



| |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
| | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (a) to evidence the succession of another Person to PCS and the
assumption by any such successor of the covenants of PCS contained herein
and in the Securities;                                                                                                                                                                                                                                                                                                                                                                          
|
| | (b) to add to the covenants of PCS 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 PCS;                                                                                                                                                                                
|
| | (c) to add any additional Events of Default for the benefit of the
Holders of all or any series of Securities (and if such Events of Default
are to be for the benefit of less than all series of Securities, stating
that such Events of Default are expressly being included solely for the
benefit of such series); provided, however, that in respect of any such
additional Events of Default such supplemental indenture may provide for
a particular period of grace after default (which period may be shorter
or longer than that

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| |                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
| | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | allowed in the case of other defaults) or may provide for an
immediate enforcement upon such default or may limit the remedies
available to the Trustee upon such default or may limit the right of the
Holders of a majority in aggregate principal amount of that or those
series of Securities to which such additional Events of Default apply to
waive such default;                                                                                         
|
| | (d) 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;                                                                                                                       
|
| | (e) to change or eliminate any provision of this Indenture; provided
that any such change or elimination shall become effective only when
there is no Security Outstanding of any series created prior to the
execution of such supplemental indenture that is entitled to the benefit
of such provision;                                                                                                                                                         
|
| | (f) to add guarantees to Securities and guarantors as parties
hereunder or to secure Securities pursuant to the requirements of Section
8.03 or 10.10 or otherwise;                                                                                                                                                                                                                                                                                               
|
| | (g) to establish the form or terms of Securities of any series and
as permitted by Sections 2.01 and 3.01, including the provisions and
procedures relating to Securities convertible into Common Shares or
Preferred Shares, as the case may be;                                                                                                                                                                                                                 
|
| | (h) to evidence and provide for the acceptance of appointment
hereunder by a successor Trustee with respect to 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;                                                                                                                           
|
| | (i) to cure any ambiguity, to correct or supplement any provision
herein which may be defective or inconsistent with any other provision
herein, or to make any other provisions with respect to matters or
questions arising under this Indenture which shall not be inconsistent
with the provisions of this Indenture; provided such provisions shall not
adversely affect the interests of the Holders of Securities of any series
in any material respect; or
|
| | (j) to supplement any of the provisions of this Indenture to such
extent as shall be necessary to permit or facilitate the defeasance and
discharge of any series of Securities pursuant to Sections 4.01, 14.02
and 14.03; provided that any such action shall not adversely affect the
interests of the Holders of Securities of such or any other series of
Securities in any material respect.                                                                

SECTION 9.02 Supplemental Indentures with Consent of Holders. With the
consent of the Holders of not less than a majority in principal amount of all
Outstanding Securities affected by such supplemental indenture, by Act of said
Holders delivered to PCS and the Trustee, PCS, when authorized by or pursuant
to 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 under
this Indenture;

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provided, however, that no such supplemental indenture shall, without the
consent of the Holder of each Outstanding Security affected thereby:



| |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
| | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (a) change the Stated Maturity of the principal of (or premium, if
any), or any installment of principal of or interest on, any Security; or
reduce the principal amount thereof or the rate or amount of interest
thereon or any Additional Amounts payable in respect thereof; or any
premium payable upon the redemption thereof; or change any obligation of
PCS to pay Additional Amounts pursuant to Section 10.09 (except as
contemplated by Section 8.01(a) and permitted by Section 9.01(a)), 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 5.02 or the amount thereof provable
in bankruptcy pursuant to Section 5.04, or adversely affect any right of
repayment at the option of the Holder of any Security, or change any
Place of Payment where, or the currency or currencies, currency unit or
units or composite currency or currencies in which, any Security or any
premium or the 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 or repayment at
the option of the Holder, on or after the Redemption Date or the
Repayment Date, as the case may be), or adversely affect any right to
convert or exchange any Security as may be provided pursuant to Section
3.01,
|
| | (b) reduce the percentage in principal amount of 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 with respect to such series (or compliance with
certain provisions of this Indenture or certain defaults hereunder and
their consequences) provided for in this Indenture, or reduce the
requirements of Section 15.04 for quorum or voting, or                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|
| | (c) modify any of the provisions of this Section, Section 5.13 or
Section 10.12, except to increase the required percentage to effect such
action 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.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           

It shall not be necessary for any Act of Holders under this Section 9.02
to approve the particular form of any proposed supplemental indenture, but it
shall be sufficient if such Act shall approve the substance thereof.

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.

SECTION 9.03 Execution of Supplemental Indentures. In executing, or
accepting the additional trusts created by, any supplemental indenture
permitted by this Article Nine or the modification thereby of the trusts
created by this Indenture, the Trustee shall be entitled to receive, and shall
be fully protected in relying upon, an Opinion of Counsel stating

51



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that the execution of such supplemental indenture is authorized or
permitted by this Indenture, 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 9.04 Effect of Supplemental Indentures. Upon the execution of any
supplemental indenture under this Article Nine, 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
theretofore or thereafter authenticated and delivered hereunder shall be bound
thereby.

SECTION 9.05 Conformity with TIA. Every supplemental indenture executed
pursuant to this Article Nine shall conform to the requirements of the TIA as
then in effect.

SECTION 9.06 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 PCS shall so determine, new
Securities of any series so modified as to conform, in the opinion of the
Trustee and PCS, to any such supplemental indenture may be prepared and
executed by PCS and authenticated and delivered by the Trustee in exchange for
Outstanding Securities of such series.

SECTION 9.07 Notice of Supplemental Indentures. Promptly after the
execution by PCS and the Trustee of any supplemental indenture pursuant to the
provisions of Section 9.02, PCS shall give notice thereof to the Holders of
each Outstanding Security affected, in the manner provided for in Section 1.06,
setting forth in general terms the substance of such supplemental indenture.

ARTICLE TEN
COVENANTS

SECTION 10.01 Payment of Principal, Premium, if any, Interest and
Additional Amounts. PCS covenants and agrees for the benefit of the Holders of
each series of Securities that it will duly and punctually pay the principal of
(and premium, if any) and interest on and any Additional Amounts payable in
respect of Securities of that series in accordance with the terms of such
series of Securities and this Indenture. Unless otherwise specified with
respect to Securities of any series pursuant to Section 3.01, at the option of
PCS, all payments of principal may be paid by check to the registered Holder of
the Security or other person entitled thereto against surrender of such
Security.

SECTION 10.02 Maintenance of Office or Agency. PCS shall 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 or
conversion, where Securities of that series may be surrendered for registration
of transfer or exchange and where notices and demands to or upon PCS in respect
of Securities of that series and this Indenture may be served. PCS will give
prompt written notice to the Trustee of the location, and any change in the
location, of each such office or agency. If at any time PCS shall fail to
maintain any such required office or agency or shall fail to furnish the
Trustee with the address thereof, such presentations and surrenders may

52



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be made or served at the Corporate Trust Office of the Trustee, and PCS
hereby appoints the Trustee as its agent to receive all such presentations,
surrenders, notices and demands.

PCS may from time to time designate one or more other offices or agencies
where Securities of one or more series may be presented or surrendered for any
or all of such purposes, and may from time to time rescind such designations;
provided, however, that no such designation or rescission shall in any manner
relieve PCS of its obligation to maintain an office or agency in accordance
with the requirements set forth above for Securities of any series for such
purposes. PCS 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. Unless otherwise specified with respect to any Securities
pursuant to Section 3.01 with respect to a series of Securities, PCS hereby
designates as a Place of Payment for each series of Securities the office or
agency of PCS in the Borough of Manhattan, New York City, and initially
appoints the Trustee at its Corporate Trust Office as Paying Agent and as its
agent to receive all such presentations, surrenders, notices and demands.

Unless otherwise specified with respect to any Securities pursuant to
Section 3.01, if and so long as Securities of any series (a) are denominated in
a Foreign Currency or (b) may be payable in a Foreign Currency, or so long as
it is required under any other provision of the Indenture, then PCS will
maintain with respect to each such series of Securities, or as so required, at
least one exchange rate agent.

SECTION 10.03 Money for Securities Payments to Be Held in Trust. If PCS
shall at any time act as its own Paying Agent with respect to any series of any
Securities, it will, on or before each due date of the principal of (and
premium, if any) or interest on or Additional Amounts in respect of any
Securities of that series, segregate and hold in trust for the benefit of the
Persons entitled thereto a sum in the currency or currencies, currency unit or
units or composite currency or currencies in which Securities of such series
are payable (except as otherwise specified pursuant to Section 3.01 for
Securities of such series) sufficient to pay the principal (and premium, if
any) or interest or Additional Amounts 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 PCS shall have one or more Paying Agents for any series of
Securities, it will, on or before each due date of the principal of (and
premium, if any) or interest on or Additional Amounts in respect of any
Securities of that series, deposit with a Paying Agent a sum (in the currency
or currencies, currency unit or units or composite currency or currencies
described in the preceding paragraph) sufficient to pay the principal (and
premium, if any) or interest or Additional Amounts, so becoming due, such sum
to be held in trust for the benefit of the Persons entitled to such principal,
premium or interest or Additional Amounts and (unless such Paying Agent is the
Trustee) PCS will promptly notify the Trustee of its action or failure so to
act.

PCS will cause each Paying Agent 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 10.03, that such
Paying Agent will:
53



| |                                                                                                                                                                                                                                                                                       
| | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (a) hold all sums held by it for the payment of principal of (and
premium, if any) or interest on Securities or Additional Amounts in trust
for the benefit of the Persons entitled thereto until such sums shall be
paid to such Persons or otherwise disposed of as herein provided;
|
| | (b) give the Trustee notice of any default by PCS (or any other
obligor upon Securities) in the making of any such payment of principal
(and premium, if any) or interest or Additional Amounts; and                                                                                  
|
| | (c) at any time during the continuance of any such default upon the
written request of the Trustee, forthwith pay to the Trustee all sums so
held in trust by such Paying Agent.                                                                                                      

PCS may at any time, for the purpose of obtaining the satisfaction and
discharge of this Indenture or for any other purpose, pay, or by PCS Order
direct any Paying Agent to pay, to the Trustee all sums held in trust by PCS or
such Paying Agent, such sums to be held by the Trustee upon the same trusts as
those upon which such sums were held by PCS 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 sums.

Except as otherwise provided in Securities of any series, any money
deposited with the Trustee or any Paying Agent, or then held by PCS, in trust
for the payment of the principal of (and premium, if any) or interest on, or
any Additional Amounts in respect of, any Security of any series and remaining
unclaimed for two years (or such shorter period of time for return of such
money to PCS under applicable abandoned property laws) after such principal
(and premium, if any), interest or Additional Amounts has become due and
payable shall be paid to PCS upon PCS Request or (if then held by PCS) shall be
discharged from such trust; and the Holder of such Security shall thereafter,
as an unsecured general creditor, look only to PCS for payment of such
principal of (and premium, if any) or interest on, or any Additional Amounts in
respect of, any Security, without interest thereon, and all liability of the
Trustee or such Paying Agent with respect to such trust money, and all
liability of PCS 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 expense of PCS 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 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 PCS.

SECTION 10.04 Existence. Subject to Article Eight, PCS will do or cause
to be done all things necessary to preserve and keep in full force and effect
its existence as a corporation, rights (charter and statutory) and franchises;
provided, however, that PCS shall not be required to preserve any right or
franchise if the Board of Directors shall determine that the preservation
thereof is no longer desirable in the conduct of the business of PCS.

SECTION 10.05 Statement as to Compliance. PCS will deliver to the
Trustee, within 120 days after the end of each fiscal year, a brief certificate
from the principal executive officer, principal financial officer or principal
accounting officer as to his or her knowledge of

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PCSs compliance with all conditions and covenants under this Indenture
and, in the event of any noncompliance, specifying such noncompliance and the
nature and status thereof. For purposes of this Section 10.08, such compliance
shall be determined without regard to any period of grace or requirement of
notice under this Indenture.

SECTION 10.06 Additional Amounts. All payments made by PCS under or with
respect to Securities shall be in U.S. Dollars (except as otherwise set forth
in the Securities) and shall be free and clear of and without withholding or
deduction for or on account of any present or future tax, duty, levy, impost,
assessment or other governmental charge of any nature whatsoever imposed or
levied by or on behalf of the Government of Canada or of any province or
territory thereof or by any authority or agency therein or thereof having power
to tax (hereinafter Taxes), unless PCS is required to withhold or deduct
Taxes by law or by the interpretation or administration thereof. If PCS is so
required to withhold or deduct any amount for or on account of Taxes from any
payment made under or with respect to Securities, PCS will pay such additional
amounts (Additional Amounts) as may be necessary so that the net amount
received by each Holder (including Additional Amounts) after such withholding
or deduction will not be less than the amount the Holder would have received if
such Taxes had not been withheld or deducted; provided that no Additional
Amounts will be payable with respect to Taxes (such Taxes, Excluded Taxes)
(a) that would not have been imposed but for the fact that the payment is made
to a Holder with which PCS does not deal at arms length (within the meaning of
the Income Tax Act (Canada)) at the time of making such payment, (b) that would
not have been imposed but for the existence of any present or former connection
between such Holder and Canada or any province or any territory thereof
otherwise than by the mere holding of Securities or the receipt of payments
thereunder, (c) that would not have been imposed but for the presentation by
such Holder of such Security for payment on a date more than 30 days after the
date on which such payment became due and payable or the date on which payment
thereof is duly provided for, whichever occurs later, (d) required to be
deducted or withheld by any paying agent from a payment on such Security, if
such payment can be made without such deduction or withholding by any other
paying agent or (e) that would not have been imposed but for the failure of
such Holder to comply with any applicable certification, documentation,
information or other reporting requirement concerning the nationality,
residence, identity or connection with the taxing jurisdiction of the Holder or
beneficial owner of such Security.

PCS will also in accordance with applicable law (a) make such withholding
or deduction, and (b) remit the full amount deducted or withheld to the
relevant authority. PCS will furnish to the Holder of such Securities, within
30 days after the date the payment of any Taxes is due pursuant to applicable
law, certified copies of tax receipts evidencing such payment by PCS.

At least 30 days prior to each date on which any payment under or with
respect to Securities is due and payable, if PCS will be obligated to pay
Additional Amounts with respect to such payment, PCS will deliver to the
Trustee an Officers Certificate stating the fact that such Additional Amounts
will be payable, the amounts so payable and such other information necessary to
enable the Trustee to pay such Additional Amounts to Holders on the payment
date. Wherever in this Indenture there is mentioned, in any context except in
the case of Section 5.02(a), the payment of the principal of (or premium, if
any) or interest on, or in respect of, any Security of any series or the net
proceeds received on the sale or exchange of any

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Security of any series, the payment of principal (and premium, if any),
interest or any other amount payable under or with respect to a Security, such
mention shall be deemed to include mention of the payment of Additional Amounts
to the extent that, in such context, Additional Amounts are, were or would be
payable in respect thereof.

The obligations of PCS under this Section 10.06 shall survive the
termination of this Indenture and the payment of all amounts under or with
respect to Securities.

SECTION 10.07 Limitation on Liens.

(a) PCS shall not, and shall not permit any Subsidiary to, incur any Lien
on or with respect to any of the Principal Property of PCS or any Subsidiary
now owned or hereafter acquired to secure Debt without making, or causing such
Subsidiary to make, effective provision for securing the Securities (i) equally
and ratably with such Debt as to such Principal Property for so long as such
Debt shall be so secured, or (ii) in the event such Debt is subordinate in
right of payment to the Securities, prior to such Debt as to such Principal
Property for so long as such Debt shall be so secured.

The foregoing restrictions will not apply to Liens in respect of Debt
existing at the date of this Indenture, Liens on or with respect to property
that is not Principal Property or to:



| |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
| | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (i) Liens securing only Securities;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|
| | (ii) Liens in favor of PCS or any of its Subsidiaries;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|
| | (iii) Liens on property existing immediately prior to the time
of acquisition thereof (and not created in anticipation of the
financing of such acquisition);                                                                                                                                                                                                                                                                                                                                                                                                                  
|
| | (iv) Liens to secure Debt incurred for the purpose of
financing all or any part of the purchase price or the cost of
construction or improvement of property used in the business of PCS
or any Subsidiaries and subject to such Liens, provided that (A)
the principal amount of any Debt secured by such a Lien does not
exceed 100% of such purchase price or cost, (B) such Lien does not
extend to or cover any property other than such property and any
such improvements, and (C) such Debt is incurred within 12 months
of such purchase, construction or improvement;
|
| | (v) Liens on property of a Person existing at the time such
Person is merged with or into or amalgamated or consolidated with
PCS or any of its Subsidiaries that were not created in
anticipation of the acquisition of such Person; provided that such
Lien does not extend to or cover any property other than that of
the Person so merged, amalgamated or consolidated;                                                                                                                                                                                                   
|
| | (vi) Liens on any Principal Property in favor of a domestic or
foreign governmental body to secure partial progress, advance or
other payments pursuant to any contract or statute of such
governmental body; and                                                                                                                                                                                                                                                                                                                                                              

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| |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
| | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (vii) Liens to secure Debt incurred to extend, renew,
refinance, replace or refund (or successive extensions, renewals,
refinancings, replacements or refundings), in whole or in part, any
secured Debt existing on the date of this Indenture or any Debt
secured by any Lien referred to in the foregoing clauses (i) to
(vi), so long as in each such case the Lien does not extend to any
other property and the Debt so secured is not increased other than
for reasonable costs related to such extension, renewal,
refinancing, replacement or refunding.

(b) Notwithstanding the foregoing Paragraph (a), PCS and its Subsidiaries
may incur a Lien or Liens to secure Debt (excluding Debt secured by Liens
permitted under the foregoing exceptions) the aggregate amount of which,
including Attributable Debt in respect of Sale and Leaseback Transactions, does
not exceed 15% of Consolidated Net Tangible Assets.

(c) Notwithstanding the foregoing Paragraphs (a) and (b), PCS and its
Subsidiaries may incur a Lien or Liens to secure any Debt incurred pursuant to
a Sale and Leaseback Transaction, without securing the Securities equally and
ratably with or prior to such Debt, as applicable, provided that such Sale and
Leaseback Transaction complies with the terms of Paragraphs (b) and (c) of
Section 10.08.

SECTION 10.08 Limitation on Sale and Leaseback Transactions. PCS shall
not, and shall not permit any Subsidiary of PCS to, enter into any Sale and
Leaseback Transaction with respect to any Principal Property (except for a
period, including renewals, not exceeding 36 months) unless:

(a) At the time of entering into such Sale and Leaseback Transaction, PCS
or such Subsidiary would be entitled to incur Debt, in a principal amount equal
to the Attributable Debt in respect of such Sale and Leaseback Transaction,
secured by a Lien, without equally and ratably securing the Securities;

(b) PCS or such Subsidiary applies, within 12 months after the sale or
transfer, an amount equal to the greater of (i) the net proceeds of the
Principal Property sold pursuant to the Sale and Leaseback Transaction, or (ii)
the fair value (in the opinion of an executive officer of PCS) of such
Principal Property to the acquisition of or construction on property used or to
be used in the ordinary course of business of PCS or a Subsidiary of PCS, and
PCS shall have elected to designate such amount as a credit against such Sale
and Leaseback Transaction; or

(c) Subject to the following paragraph, PCS or such Subsidiary applies,
within 12 months after the sale or transfer, an amount equal to the net
proceeds of Principal Property sold pursuant to the Sale and Leaseback
Transaction to the voluntary defeasance or retirement of Debt, which amount
shall not be less than the fair value (in the opinion of an executive officer
of PCS) of such Principal Property less an amount equal to the principal amount
of such Debt voluntarily defeased or retired by PCS or such Subsidiary within
such 12-month period and not designated as a credit against any other Sale and
Leaseback Transaction.

Notwithstanding the foregoing, in no event shall PCS be required to
defease or retire, in the aggregate with respect to any and all such
transactions pursuant to this Section

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10.08, more than 25% of the original aggregate principal amount of a
series of Securities on or prior to the fifth anniversary of the original date
of issue thereof, the whole as contemplated by and within the meaning of
subparagraph 212(1)(b)(vii) of the Income Tax Act (Canada). If the aggregate
net proceeds that PCS would be otherwise required to use to defease or retire
Securities on or prior to the fifth anniversary of the original date of issue
thereof would exceed 25% of the original aggregate principal amount of such
series (such excess being 25% Excess Proceeds), then promptly after such
fifth anniversary PCS shall defease or retire Securities in an amount equal to
the 25% Excess Proceeds. Pending such defeasing or retiring of Securities, the
25% Excess Proceeds shall be invested and maintained by and for the benefit of
PCS in Permitted Short-Term Investments and PCS shall not distribute such
proceeds in respect of its shares.

SECTION 10.09 Waiver of Certain Covenants. PCS may omit in any particular
instance with respect to any series of Securities to comply with any term,
provision or condition set forth in Section 10.04, 10.07, or 10.08 if before or
after the time for such compliance the Holders of at least a majority in
principal amount of all outstanding Securities of such series, by Act of such
Holders, either waive such compliance in such instance or generally waive
compliance with such covenant or condition, but no such waiver shall extend to
or affect such covenant or condition except to the extent so expressly waived,
and, until such waiver shall become effective, the obligations of PCS and the
duties of the Trustee in respect of any such term, provision or condition shall
remain in full force and effect.

ARTICLE ELEVEN
REDEMPTION OF SECURITIES

SECTION 11.01 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
3.01 for Securities of any series) in accordance with this Article Eleven.

SECTION 11.02 Election to Redeem; Notice to Trustee. The election of PCS
to redeem any Securities shall be evidenced by or pursuant to a Board
Resolution. In case of any redemption at the election of PCS of less than all
Securities of any series, PCS shall, at least 45 days prior to the Redemption
Date fixed by PCS, notify the Trustee of such Redemption Date and of the
principal amount of Securities of such series to be redeemed and shall deliver
or cause to be delivered to the Trustee such documentation and records as shall
enable the Trustee to select, at the direction of PCS, Securities to be
redeemed pursuant to Section 11.03.

SECTION 11.03 Selection by Trustee of Securities To Be Redeemed. If less
than all Securities of any series are to be redeemed, the particular Securities
to be redeemed shall be selected not more than 60 days prior to the Redemption
Date by the Trustee at the direction of PCS, from Outstanding Securities of
such series not previously called for redemption, by lot or pro rata as
directed by PCS or by such method as the Trustee and PCS 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.

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The Trustee shall promptly notify PCS 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, and the Trustee and
PCS shall jointly advise the Security Registrar (if other than the Trustee) of
their selection.

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 Security redeemed or to be redeemed only in part, to the portion of
the principal amount of such Security which has been or is to be redeemed.

SECTION 11.04 Notice of Redemption. Notice of redemption shall be given
in the manner provided in Section 1.06, not less than 30 days nor more than 60
days prior to the Redemption Date, unless a shorter period is specified by the
terms of such series established pursuant to Section 3.01, to each Holder of
Securities to be redeemed, but failure to give such notice in the manner herein
provided to the Holder of any Security designated for redemption as a whole or
in part, or any defect in the notice to any such Holder, shall not affect the
validity of the proceedings for the redemption of any other such Security or
portion thereof

Any notice that is mailed to the Holders of Securities in the manner
herein provided shall be conclusively presumed to have been duly given, whether
or not the Holder receives the notice.

All notices of redemption shall state:



| |                                                                                                                                                                                                                                                                                                                                                  
| | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (a) the Redemption Date,                                                                                                                                                                                                                                                                                                                         
|
| | (b) the Redemption Price, accrued interest to the Redemption Date
payable as provided in Section 11.06, if any, and Additional Amounts, if
any,                                                                                                                                                                                                  
|
| | (c) if less than all Outstanding Securities of any series are to be
redeemed, the identification (and, in the case of partial redemption, the
principal amount) of the particular Security or Securities to be
redeemed,                                                                                                                         
|
| | (d) in case any Security is to be redeemed in part only, the notice
which relates to such Security shall state that on and after the
Redemption Date, upon surrender of such Security, the holder will
receive, without a charge, a new Security or Securities of authorized
denominations for the principal amount thereof remaining unredeemed,
|
| | (e) that on the Redemption Date, the Redemption Price and accrued
interest to the Redemption Date payable as provided in Section 11.06, if
any, will become due and payable upon each such Security, or the portion
thereof, to be redeemed and, if applicable, that interest thereon shall
cease to accrue on and after said date,              
|
| | (f) the Place or Places of Payment where such Securities are to be
surrendered for payment of the Redemption Price and accrued interest, if
any, or for conversion,                                                                                                                                                                              
|
| | (g) that the redemption is for a sinking fund, if such is the case,                                                                                                                                                                                                                                                                              

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| |                                                                                                                                                                                                                                                                                      
| | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (h) the CUSIP number of such Security, if any, and                                                                                                                                                                                                                                   
|
| | (i) if applicable, that a Holder of Securities who desires to
convert Securities for redemption must satisfy the requirements for
conversion contained in such Securities, the then existing conversion
price or rate, and the date and time when the option to convert shall
expire.

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

SECTION 11.05 Deposit of Redemption Price. On or prior to any Redemption
Date, PCS shall deposit with the Trustee or with a Paying Agent (or, if PCS is
acting as its own Paying Agent, which it may not do in the case of a sinking
fund payment under Article Twelve, segregate and hold in trust as provided in
Section 10.03) an amount of money in the currency or currencies, currency unit
or units or composite currency or currencies in which Securities of such series
are payable (except as otherwise specified pursuant to Section 3.01 for
Securities of such series) sufficient to pay on the Redemption Date the
Redemption Price of, and (except if the Redemption Date shall be an Interest
Payment Date) accrued interest on, all Securities or portions thereof which are
to be redeemed on that date.

SECTION 11.06 Securities Payable on Redemption Date. Notice of redemption
having been given as aforesaid, Securities so to be redeemed shall, on the
Redemption Date, become due and payable at the Redemption Price therein
specified in the currency or currencies, currency unit or units or composite
currency or currencies in which Securities of such series are payable (except
as otherwise specified pursuant to Section 3.01 for Securities of such series)
(together with accrued interest, if any, to the Redemption Date), and from and
after such date (unless PCS shall default in the payment of the Redemption
Price and accrued interest) such Securities shall, if the same were
interest-bearing, cease to bear interest. Upon surrender of any such Security
for redemption in accordance with said notice, such Security shall be paid by
PCS at the Redemption Price, together with accrued interest, if any, to the
Redemption Date; provided, however, that, except as otherwise provided with
respect to Securities convertible into Common Stock or Preferred Stock,
installments of interest on Securities 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 3.07.

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 borne by the Security.

SECTION 11.07 Securities Redeemed in Part. Any Security which is to be
redeemed only in part (pursuant to the provisions of this Article Eleven or
Article Twelve) shall be surrendered at a Place of Payment therefor (with, if
PCS or the Trustee so requires, due endorsement by, or a written instrument of
transfer in form satisfactory to PCS and the Trustee duly executed by, the
Holder thereof or his attorney duly authorized in writing) and PCS 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, of any authorized denomination as

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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
SINKING FUNDS

SECTION 12.01 Applicability of Article. The provisions of this Article
Twelve shall be applicable to any sinking fund for the retirement of Securities
of a series except as otherwise specified as contemplated by Section 3.01 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 such Securities of any series is herein referred to as an optional
sinking fund payment. If provided for by the terms of any Securities of any
series, the cash amount of any mandatory sinking fund payment may be subject to
reduction as provided in Section 12.02. 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 12.02 Satisfaction of Sinking Fund Payments with Securities. PCS
may, in satisfaction of all or any part of any mandatory sinking fund payment
with respect to Securities of a series, (a) deliver Outstanding Securities of
such series (other than any previously called for redemption), and (b) apply as
a credit Securities of such series which have been redeemed either at the
election of PCS pursuant to the terms of such Securities or through the
application of permitted optional sinking fund payments pursuant to the terms
of such Securities, as provided for by the terms of such Securities, or which
have otherwise been acquired by PCS; provided that such Securities so delivered
or applied as a credit have not been previously so credited. Such Securities
shall be received and credited for such purpose by the Trustee at the
applicable Redemption Price specified in such Securities for redemption through
operation of the sinking fund and the amount of such mandatory sinking fund
payment shall be reduced accordingly.

Unless otherwise provided in any Security of any series, no sinking fund
arrangement shall be entered into if, in the opinion of Canadian tax counsel to
PCS, such arrangement could reasonably be considered to contravene the
requirements of Subparagraph 212(1)(b)(vii) of the Income Tax Act (Canada)
respecting the exemption from Canadian tax on interest paid to non-residents of
Canada.

SECTION 12.03 Redemption of Securities for Sinking Fund. Not less than 60
days prior to each sinking fund payment date for Securities of any series, PCS
shall deliver to the Trustee an Officers Certificate specifying the amount of
the next ensuing mandatory 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 in the currency or currencies, currency unit or units or
composite currency or currencies in which Securities of such series are payable
(except as otherwise specified pursuant to Section 3.01 for Securities of such
series) and the portion thereof, if any, which is to be satisfied by delivering
and crediting Securities of that series pursuant to Section 12.02, and the
optional amount, if any, to be added in cash to the next ensuing

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mandatory sinking fund payment, and will also deliver to the Trustee any
Securities to be so delivered and credited. If such Officers Certificate
shall specify an optional amount to be added in cash to the next ensuing
mandatory sinking fund payment, PCS shall thereupon be obligated to pay the
amount therein specified. Not less than 30 days before each such sinking fund
payment date the Trustee shall select Securities to be redeemed upon such
sinking fund payment date in the manner specified in Section 11.03 and cause
notice of the redemption thereof to be given in the name of and at the expense
of PCS in the manner provided in Section 11.04. Such notice having been duly
given, the redemption of such Securities shall be made upon the terms and in
the manner stated in Sections 11.06 and 11.07.

ARTICLE THIRTEEN
REPAYMENT AT THE OPTION OF HOLDERS

SECTION 13.01 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, if any, and (except as
otherwise specified by the terms of such series established pursuant to Section
3.01) in accordance with this Article Thirteen.

SECTION 13.02 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. PCS covenants that at least one Business Day prior to the
Repayment Date it will deposit with the Trustee or with a Paying Agent (or, if
PCS is acting as its own Paying Agent, segregate and hold in trust as provided
in Section 10.03) an amount of money in the currency or currencies, currency
unit or units or composite currency or currencies in which Securities of such
series are payable (except as otherwise specified pursuant to Section 3.01 for
Securities of such series) sufficient to pay the principal (or, if so provided
by the terms of 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 Securities or portions thereof, as the case may be, to be
repaid on such date.

SECTION 13.03 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. In order for any Security
to be repaid at the option of the Holder, the Trustee must receive at the Place
of Payment therefor specified in the terms of such Security (or at such other
place or places of which PCS shall from time to time notify the Holders of such
Securities) not earlier than 60 days nor later than 30 days prior to the
Repayment Date (a) the Security so providing for such repayment together with
the Option to Elect Repayment form on the reverse thereof duly completed by
the Holder (or by the Holders attorney duly authorized in writing), or (b) a
telegram, telex, facsimile transmission or a letter from a member of a national
securities exchange, or the National Association of Securities Dealers, Inc.,
or a commercial bank or trust company in the United States setting forth the
name of the Holder of the Security, the principal amount of the Security, the
principal amount of the Security to be repaid, the CUSIP number, if any, or a
description of the tenor and terms of the Security, a statement that the option
to elect repayment is being exercised thereby and a guarantee that the Security
to be repaid, together with the duly completed form entitled Option

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to Elect Repayment on the reverse of the Security, will be received by
the Trustee not later than the fifth Business Day after the date of such
telegram, telex, facsimile transmission or letter; provided, however, that such
telegram, telex, facsimile transmission or letter shall only be effective if
such Security and form duly completed are received by the Trustee by such fifth
Business Day. 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 PCS.

SECTION 13.04 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
Thirteen 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 PCS on the Repayment Date therein
specified, and on and after such Repayment Date (unless PCS shall default in
the payment of such Securities on such Repayment Date) such Securities shall,
if the same are interest-bearing, cease to bear interest, except to the extent
provided below, shall be void. Upon surrender of any such Security for
repayment in accordance with such provisions, together with all coupons, if
any, appertaining thereto maturing after the Repayment Date, the principal
amount of such Security so to be repaid shall be paid by PCS, 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 (but without interest thereon, unless PCS shall
default in the payment thereof) 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
3.08.

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 13.05 Securities Repaid in Part. Upon surrender of any Security
which is to be repaid in part only, PCS shall execute and the Trustee shall
authenticate and deliver to the Holder of such Security, without service charge
and at the expense of PCS, 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.

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ARTICLE FOURTEEN
DEFEASANCE AND COVENANT DEFEASANCE

SECTION 14.01 Applicability of Article: PCSs Option to Effect Defeasance
or Covenant Defeasance. If, pursuant to Section 3.01, provision is made for
either or both of (a) defeasance of Securities of or within a series under
Section 14.02, or (b) covenant defeasance of Securities of or within a series
under Section 14.03, then the provisions of such Section or Sections, as the
case may be, together with the other provisions of this Article Fourteen (with
such modifications thereto as may be specified pursuant to Section 3.01 with
respect to any Securities), shall be applicable to such Securities, and PCS may
at its option by Board Resolution, at any time, with respect to such Securities
elect to have Section 14.02 (if applicable) or Section 14.03 (if applicable) be
applied to such Outstanding Securities upon compliance with the conditions set
forth below in this Article Fourteen.

SECTION 14.02 Defeasance and Discharge. Upon PCSs exercise of the above
option applicable to this Section 14.02 with respect to any Securities of or
within a series, PCS shall be deemed to have been discharged from its
obligations with respect to such Outstanding Securities on the date the
conditions set forth in Section 14.04 are satisfied (defeasance). For this
purpose, such defeasance means that PCS shall be deemed to have paid and
discharged the entire indebtedness represented by such Outstanding Securities,
which shall thereafter be deemed to be Outstanding only for the purposes of
Section 14.05 and the other Sections of this Indenture referred to in
Paragraphs (a) and (b) below, and to have satisfied all of its other
obligations under such Securities and this Indenture insofar as such Securities
are concerned (and the Trustee, at the expense of PCS, shall execute proper
instruments acknowledging the same), except for the following which shall
survive until otherwise terminated or discharged hereunder:

(a) the rights of Holders of such Outstanding Securities to receive,
solely from the trust fund described in Section 14.04 and as more fully set
forth in such Section, payments in respect of the principal of (and premium, if
any) and interest on such Securities when such payments are due,

(b) PCSs obligations with respect to such Securities under Sections 3.05,
3.06,3.07, 10.02 and 10.03 and with respect to the payment of Additional
Amounts, if any, on such Securities as contemplated by Section 10.06,

(c) the rights, powers, trusts, duties and immunities of the Trustee
hereunder and the obligations of PCS under Section 6.07, and

(d) this Article Fourteen.

Subject to compliance with this Article Fourteen, PCS may exercise its option
under this Section 14.02 notwithstanding the prior exercise of its option under
Section 14.03 with respect to such Securities.

SECTION 14.03 Covenant Defeasance. Upon PCSs exercise of the above
option applicable to this Section 14.03 with respect to any Securities of or
within a series, PCS shall be released from its obligations under Sections
10.04, 10.07 and 10.08 and, if specified pursuant to Section 3.01, its
obligations under any other covenant, with respect to such

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Outstanding Securities on and after the date the conditions set forth in
Section 14.04 are satisfied (covenant defeasance), and such Securities shall
thereafter be deemed to be not Outstanding for the purposes of any direction,
waiver, consent or declaration or Act of Holders (and the consequences of any
thereof) in connection with Sections 10.04, 10.07 and 10.08 or such other
covenant, but shall continue to be deemed Outstanding for all other purposes
hereunder. For this purpose, such covenant defeasance means that, with respect
to such Outstanding Securities, PCS may omit to comply with and shall have no
liability in respect of any term, condition or limitation set forth in any such
Section or such other covenant, whether directly or indirectly, by reason of
any reference elsewhere herein to any such Section or such other covenant or by
reason of reference in any such Section or such other covenant to any other
provision herein or in any other document and such omission to comply shall not
constitute a default or an Event of Default under Section 5.01(d) or 5.01(h) or
otherwise, as the case may be, but, except as specified above, the remainder of
this Indenture and such Securities shall be unaffected thereby.

SECTION 14.04 Conditions to Defeasance or Covenant Defeasance. The
following shall be the conditions to application of Section 14.02 or Section
14.03 to any Outstanding Securities of or within a series:



| |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
| | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (a) PCS shall irrevocably have deposited or caused to be deposited
with the Trustee (or another trustee satisfying the requirements of
Section 6.07 who shall agree to comply with the provisions of this
Article Fourteen 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 such
Securities, (i) an amount in such currency, currencies or currency unit
in which such Securities are then specified as payable at Stated
Maturity, (ii) Government Obligations applicable to such Securities
(determined on the basis of the currency, currencies or currency unit in
which such Securities are then specified as payable at Stated Maturity)
which 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 of principal of (and premium, if
any) and interest, if any, on such Securities, money in an amount, or
(iii) a combination thereof, in any case, in an amount, sufficient,
without consideration of any reinvestment of such principal and interest,
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 other qualifying trustee) to pay and discharge (i) the principal of
(and premium, if any) and interest on such Outstanding Securities on the
Stated Maturity of such principal (and premium, if any) or installment of
principal or interest, and (ii) any mandatory sinking fund payments or
analogous payments applicable to such Outstanding Securities on the day
on which such payments are due and payable in accordance with the terms
of this Indenture and of such Securities; provided that the Trustee shall
have been irrevocably instructed to apply such money or the proceeds of
such Government Obligations to said payments with respect to such
Securities. Before such a deposit, PCS may give to the Trustee, in
accordance with Section 11.02 hereof, a notice of its election to redeem
all or any portion of such Outstanding Securities at a future date in
accordance with the terms of Securities of such series and Article Eleven
hereof, which notice shall be irrevocable. Such irrevocable redemption
notice, if given, shall be given effect in applying the foregoing.

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| |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
| | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (b) Such defeasance or covenant defeasance shall not result in a
breach or violation of or constitute a default under, this Indenture or
any other material agreement or instrument to which PCS is a party or by
which it is bound.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
|
| | (c) No Event of Default or event which with notice or lapse of time
or both would become an Event of Default with respect to such Securities
shall have occurred and be continuing on the date of such deposit or,
insofar as Sections 5.01(f) and 5.01(g) are concerned, at any time during
the period ending on the 91st day after the date of such deposit (it
being understood that this condition shall not be deemed satisfied until
the expiration of such period).                                                                                                                                                                                                                                                                                                
|
| | (d) In the case of an election under Section 14.02, PCS shall have
delivered to the Trustee an Opinion of Counsel stating that (i) PCS has
received from, or there has been published by, the Internal Revenue
Service a ruling, or (ii) since the date of execution of this Indenture,
there has been a change in the applicable Federal income tax law, in
either case to the effect that, and based thereon such opinion shall
confirm that, the Holders of such Outstanding Securities will not
recognize income, gain or loss for Federal income tax purposes as a
result of such defeasance and will be subject to Federal income tax on
the same amounts, in the same manner and at the same times as would have
been the case if such defeasance had not occurred.
|
| | (e) In the case of an election under Section 14.03, PCS shall have
delivered to the Trustee an Opinion of Counsel to the effect that the
Holders of such Outstanding Securities will not recognize income, gain or
loss for Federal income tax purposes as a result of such covenant
defeasance and will be subject to Federal income tax on the same amounts,
in the same manner and at the same times as would have been the case if
such covenant defeasance had not occurred.                                                                                                                                                                                                                                                                                         
|
| | (f) PCS shall have delivered to the Trustee an Opinion of Counsel in
Canada or a ruling from the Canada Customs and Revenue Agency to the
effect that the Holders of such Outstanding Securities will not recognize
income, gain or loss for Canadian federal or provincial income tax or
other tax purposes as a result of such defeasance or covenant defeasance
and will be subject to Canadian federal or provincial income tax and
other tax on the same amounts, in the same manner and at the same times
as would have been the case had such defeasance or covenant defeasance
not occurred (and for the purposes of such opinion, such Canadian counsel
shall assume that Holders of such outstanding Securities include Holders
who are not resident in Canada).
|
| | (g) PCS shall not be an insolvent person within the meaning of the
Bankruptcy and Insolvency Act (Canada) on the date of such deposit or at
any time during the period ending on the 91st day after the date of such
deposit (it being understood that this condition shall not be deemed
satisfied until the expiration of such period).                                                                                                                                                                                                                                                                                                                                                                                                                               
|
| | (h) PCS shall have delivered to the Trustee an Officers Certificate
and an Opinion of Counsel, each stating that all conditions precedent to
the defeasance under Section 14.02 or the covenant defeasance under
Section 14.03 (as the case may be) have                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 

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| |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
| | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | been complied with and an Opinion of Counsel to the effect that
either (i) as a result of a deposit pursuant to Paragraph (a) above and
the related exercise of PCSs option under Section 14.02 or Section 14.03
(as the case may be), registration is not required under the Investment
Company Act of 1940, as amended, by PCS, with respect to the trust funds
representing such deposit or by the Trustee for such trust funds, or (ii)
all necessary registrations under said Act have been effected.
|
| | (i) Notwithstanding any other provisions of this Section 14.04, such
defeasance or covenant defeasance shall be effected in compliance with
any additional or substitute terms, conditions or limitations which may
be imposed on PCS in connection therewith pursuant to Section 3.01.                                                                                                                                                                                                                    

SECTION 14.05 Deposited Money and Government Obligations to Be Held in
Trust; Other Miscellaneous Provisions. Subject to the provisions of the last
paragraph of Section 10.03, all money and Government Obligations (or other
property as may be provided pursuant to Section 3.01) (including the proceeds
thereof) deposited with the Trustee pursuant to Section 14.04 in respect of any
Outstanding Securities of any series shall be held in trust and applied by the
Trustee, in accordance with the provisions of such Securities and this
Indenture, to the payment, either directly or through any Paying Agent
(including PCS acting as its own Paying Agent) as the Trustee may determine, to
the Holders of such Securities of all sums due and to become due thereon in
respect of principal (and premium, if any), interest and Additional Amounts, if
any, but such money need not be segregated from other funds except to the
extent required by law.

Unless otherwise specified with respect to any Security pursuant to
Section 3.01, if, after a deposit referred to in Section 14.04(a) has been made
(a) the Holder of a Security in respect of which such deposit was made is
entitled to, and does, elect pursuant to Section 3.01 or the terms of such
Security to receive payment in a currency or currency unit other than that in
which the deposit pursuant to Section 14.04(a) has been made in respect of such
Security, or (b) a Conversion Event occurs in respect of the currency or
currency unit in which the deposit pursuant to Section 14.04(a) has been made,
the indebtedness represented by such Security shall be deemed to have been, and
will be, fully discharged and satisfied through the payment of the principal of
(and premium, if any), and interest on such Security as the same becomes due
out of the proceeds yielded by converting (from time to time as specified below
in the case of any such election) the amount or other property deposited in
respect of such Security into the currency or currency unit in which such
Security becomes payable as a result of such election or Conversion Event based
on a commercially reasonable market exchange rate for such currency or currency
unit in effect on the second Business Day prior to each payment date, except,
with respect to a Conversion Event, for such currency or currency unit in
effect (as nearly as feasible) at the time of the Conversion Event.

PCS shall pay and indemnify the Trustee against any tax, fee or other
charge imposed on or assessed against the Government Obligations deposited
pursuant to Section 14.04 or the principal and interest received in respect
thereof other than any such tax, fee or other charge which by law is for the
account of the Holders of such Outstanding Securities.

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Anything in this Article Fourteen to the contrary notwithstanding, subject
to Section 6.06, the Trustee shall deliver or pay to PCS from time to time upon
a PCS Request any money or Government Obligations (or other property and any
proceeds therefrom) held by it as provided in Section 14.04 which, 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 which would then be required to be deposited to
effect a defeasance or covenant defeasance, as applicable, in accordance with
this Article Fourteen.

ARTICLE FIFTEEN
MEETINGS OF HOLDERS OF SECURITIES

SECTION 15.01 Purposes for Which Meetings May Be Called. A meeting of
Holders of Securities of any series may be called at any time and from time to
time pursuant to this Article Fifteen to make, give or take any request,
demand, authorization, direction, notice, consent, waiver or other action
provided by this Indenture to be made, given or taken by Holders of Securities
of such series.

SECTION 15.02 Call, Notice and Place of Meetings. (a) The Trustee may at
any time call a meeting of Holders of Securities of any series for any purpose
specified in Section 15.01, to be held at such time and at such place as the
Trustee shall determine. Notice of every meeting of Holders of Securities of
any series, setting forth the time and the place of such meeting and in general
terms the action proposed to be taken at such meeting, shall be given, in the
manner provided in Section 1.06, not less than 21 nor more than 180 days prior
to the date fixed for the meeting.



| |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
| | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (b) In case at any time PCS, pursuant to a Board Resolution, or the
Holders of at least 10% in principal amount of Outstanding Securities of
any series shall have requested the Trustee to call a meeting of the
Holders of Securities of such series for any purpose specified in Section
15.01, by written request setting forth in reasonable detail the action
proposed to be taken at the meeting, and the Trustee shall not have made
the first publication of the notice of such meeting within 21 days after
receipt of such request or shall not thereafter proceed to cause the
meeting to be held as provided herein, then PCS or the Holders of
Securities of such series in the amount above specified, as the case may
be, may call such meeting for such purposes by giving notice thereof as
provided in Paragraph (a) of this Section 15.02.

SECTION 15.03 Persons Entitled to Vote at Meetings. To be entitled to
vote at any meeting of Holders of Securities of any series, a Person shall be
(a) a Holder of one or more Outstanding Securities of such series, or (b) a
Person appointed by an instrument in writing as proxy for a Holder or Holders
of one or more Outstanding Securities of such series by such Holder or Holders.
The only Persons who shall be entitled to be present or to speak at any
meeting of Holders of Securities of any series shall be the Persons entitled to
vote at such meeting and their counsel, any representatives of the Trustee and
its counsel and any representatives of PCS and its counsel.

SECTION 15.04 Quorum; Action. The Persons entitled to vote a majority in
principal amount of Outstanding Securities of a series shall constitute a
quorum for a meeting of

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Holders of Securities of such series; provided, however, that if any
action is to be taken at such meeting with respect to a consent or waiver which
this Indenture expressly provides may be given by the Holders of not less than
a specified percentage, which is less than a majority, in principal amount of
Outstanding Securities of a series, there shall be no quorum requirement. In
the absence of a required quorum within 30 minutes after the time appointed for
any such meeting, the meeting shall, if convened at the request of Holders of
Securities of such series, be dissolved. In any other case the meeting may be
adjourned for a period of not less than 10 days as determined by the chairman
of the meeting prior to the adjournment of such meeting. In the absence of a
quorum at the reconvening of any such adjourned meeting, such adjourned meeting
may be further adjourned for a period of not less than 10 days; at the
reconvening of any meeting adjourned or further adjourned for lack of a quorum,
the persons entitled to vote 25% in the aggregate principal amount of
Securities at the time outstanding shall constitute a quorum for the taking of
any action set forth in the notice of the original meeting. Notice of the
reconvening of any adjourned meeting shall be given as provided in Section
15.02(a), except that such notice need be given not less than five days prior
to the date on which the meeting is scheduled to be reconvened. Notice of the
reconvening of any adjourned meeting shall state expressly the percentage of
the principal amount of Outstanding Securities of such series which shall
constitute such required quorum.

Except as limited by the proviso to Section 9.02, any resolution presented
to a meeting or adjourned meeting duly reconvened at which a quorum is present
as aforesaid may be adopted by the affirmative vote of the persons entitled to
vote a majority in aggregate principal amount of Outstanding Securities
represented at such meeting; provided, however, that, except as limited by the
proviso to Section 9.02, any resolution with respect to any request, demand,
authorization, direction, notice, consent, waiver or other action which this
Indenture expressly provides may be made, given or taken by the Holders of a
specified percentage, which is less than a majority, in principal amount of
Outstanding Securities of a series may be adopted at a meeting or an adjourned
meeting duly reconvened by the affirmative vote of the Holders of such
specified percentage in principal amount of Outstanding Securities of that
series.

Any resolution passed or decision taken at any meeting of Holders of
Securities of any series duly held in accordance with this Section 15.04 shall
be binding on all the Holders of Securities of such series, whether or not
present or represented at the meeting.

Notwithstanding the foregoing provisions of this Section 15.04, if any
action is to be taken at a meeting of Holders of Securities of any series with
respect to any request, demand, authorization, direction, notice, consent,
waiver or other action that this Indenture expressly provides may be made,
given or taken by the Holders of a specified percentage, which is less than a
majority, in principal amount of all Outstanding Securities affected thereby,
or of the Holders of such series and one or more additional series:



| |                                                                                                                                                                                                                                      
| | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (i) there shall be no quorum requirement for such meeting; and                                                                                                                                                                       
|
| | (ii) the principal amount of Outstanding Securities affected
thereby that vote in favor of such request, demand, authorization,
direction, notice, consent, waiver or other action shall be taken
into account in determining whether

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| |                                                                                                                                            
| | -------------------------------------------------------------------------------------------------------------------------------------------
| | such request, demand, authorization, direction, notice,
consent, waiver or other action has been made, given or taken under
this Indenture.

SECTION 15.05 Determination of Voting Rights; Conduct of Meetings. (a)
The Trustee may make such reasonable regulations as it may deem advisable for
any meeting of Holders of Securities of a series in regard to proof of the
holding of Securities of such series and of the appointment of proxies and in
regard to the appointment and duties of inspectors of votes, the submission and
examination of proxies, certificates and other evidence of the right to vote,
and such other matters concerning the conduct of the meeting as it shall deem
appropriate. Except as otherwise permitted or required by any such
regulations, the holding of Securities shall be proved in the manner specified
in Section 1.04 and the appointment of any proxy shall be proved in the manner
specified in Section 1.04. Such regulations may provide that written
instruments appointing proxies, regular on their face, may be presumed valid
and genuine without the proof specified in Section 1.04 or other proof

(b) The Trustee shall, by an instrument in writing appoint a temporary
chairman of the meeting, unless the meeting shall have been called by PCS or by
Holders of Securities as provided in Section 15.02(b), in which case PCS or the
Holders of Securities of the series calling the meeting, as the case may be,
shall in like manner appoint a temporary chairman. A permanent chairman and a
permanent secretary of the meeting shall be elected by vote of the Persons
entitled to vote a majority in principal amount of Outstanding Securities of
such series represented at the meeting.

(c) At any meeting each Holder of a Security of such series or proxy shall
be entitled to one vote for each $1,000 principal amount of Outstanding
Securities of such series held or represented by him; provided, however, that
no vote shall be cast or counted at any meeting in respect of any Security
challenged as not Outstanding and ruled by the chairman of the meeting to be
not Outstanding. The chairman of the meeting shall have no right to vote,
except as a Holder of a Security of such series or proxy.

SECTION 15.06 Counting Votes and Recording Action of Meetings. The vote
upon any resolution submitted to any meeting of Holders of Securities of any
series shall be by written ballots on which shall be subscribed the signatures
of the Holders of Securities of such series or of their representatives by
proxy and the principal amounts and serial numbers of Outstanding Securities of
such series held or represented by them. The permanent chairman of the meeting
shall appoint two inspectors of votes who shall count all votes cast at the
meeting for or against any resolution and who shall make and file with the
secretary of the meeting their verified written reports in duplicate of all
votes cast at the meeting. A record, at least in duplicate, of the proceedings
of each meeting of Holders of Securities of any Series shall be prepared by the
secretary of the meeting and there shall be attached to said record the
original reports of the inspectors of votes on any vote by ballot taken thereat
and affidavits by one or more persons having knowledge of the fact, setting
forth a copy of the notice of the meeting and showing that said notice was
given as provided in Section 15.02 and, if applicable, Section 15.04. Each
copy shall be signed and verified by the affidavits of the permanent chairman
and secretary of the meeting and one such copy shall be delivered to PCS and
another to the Trustee to be preserved by the Trustee, the latter to have
attached thereto the ballots voted at the meeting. Any record so signed and
verified shall be conclusive evidence of the matters therein stated.

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*****

This Indenture 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 Indenture.

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IN WITNESS WHEREOF, the parties hereto have caused this Indenture to be
duly executed all as of the day and year first above written.

|        |  |                                                               |  | 
|------- |  | ------------------------------------------------------------- |  | 
|        |  | POTASH CORPORATION OF SASKATCHEWAN
INC.                      
|        |  |                                                               |  | 
|        |  | By:     /s/ Wayne Brownlee                                    |  | 
|        |  | Title:                                                        |  | 
|        |  |                                                               |  | 
|Attest: |  |                                                               |  | 
|        |  |                                                               |  | 
|Title:  |  |                                                               |  | 
|        |  |                                                               |  | 
|        |  | THE BANK OF NOVA SCOTIA TRUST
COMPANY OF NEW YORK, as Trustee |  | 
|        |  |                                                               |  | 
|        |  | By:     /s/ Warren A. Goshine                                 |  | 
|        |  | Title:                                                        |  | 
|        |  |                                                               |  | 
|Attest: |  |                                                               |  | 
|        |  |                                                               |  | 
|Title:  |  |                                                               |  | 

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|                         |  |        
|------------------------ |  | -------
|PROVINCE OF SASKATCHEWAN |  | )
) ss:
|                         |  | )      

On the                     
day of                     , 2002,
before me personally came                               , to me known, who, being by me duly sworn, did depose and
say that he/she resides at      that he/she is
                                   of POTASH CORPORATION OF SASKATCHEWAN INC., one of
the parties described in and which executed the foregoing instrument, and that
he/she signed his/her name thereto by authority of the Board of Directors.

[Notarial Seal]

| |  |                                 
| |  | --------------------------------
| |  |                                 
| |  | Notary Public
Commission Expires
| |  |                                 

|                   |  |        
|------------------ |  | -------
|STATE OF New York  |  | )
) ss:
|COUNTY OF New York |  | )      

On the      day of      , 2002, before me personally came
                              , to me known, who, being by me duly sworn, did depose and
say that he/she resides at      that he/she is
                              of POTASH CORPORATION OF SASKATCHEWAN INC., one of
the parties described in and which executed the foregoing instrument, and that
he/she signed his/her name thereto by authority of the Board of Directors.

[Notarial Seal]

| |  |                                 
| |  | --------------------------------
| |  |                                 
| |  | Notary Public
Commission Expires

73