Document:

<PAGE>

                                  EXHIBIT 4.25
<PAGE>

NEITHER THIS WARRANT NOR THE SECURITIES ISSUABLE UPON EXERCISE HEREOF NOR ANY
INTEREST OR PARTICIPATION HEREIN OR THEREIN MAY BE SOLD, ASSIGNED, PLEDGED,
HYPOTHECATED, ENCUMBERED OR IN ANY OTHER MANNER TRANSFERRED OR DISPOSED OF
EXCEPT IN COMPLIANCE WITH THE SECURITIES ACT OF 1933, AS AMENDED, AND THE TERMS
AND CONDITIONS HEREOF.  THE HOLDER OF THIS WARRANT AND THE SECURITIES ISSUABLE
UPON EXERCISE HEREOF ARE SUBJECT TO THE RESTRICTIONS HEREIN SET FORTH.

VOID AFTER 5:00 P.M. NEW YORK CITY TIME, MARCH 22, 2011

                    ****************************************

                                    No. W079

                                    WARRANT

                                       to

                             PURCHASE COMMON STOCK

                                       of

                              F.Y.I. INCORPORATED

                    ****************************************

          This certifies that, for good and valuable consideration, F.Y.I.
Incorporated, a Delaware corporation (the "Company"), grants to KERRY D.
WALBRIDGE or permitted registered assigns (the "Warrantholder" or
"Warrantholders"), the right to subscribe for and purchase from the Company, at
$33.00 per share (the "Exercise Price"), twenty-five thousand (25,000) shares of
the Company's Common Stock, par value $0.01 per share (the "Common Stock"),
subject to the provisions and upon the terms and conditions herein set forth.
The Exercise Price and the number of Warrant Shares are subject to adjustment
from time to time as provided in Section 5.
<PAGE>

     1.   Duration and Exercise of Warrant; Limitation Exercise Payment of
          ----------------------------------------------------------------
          Taxes.
          -----

          1.1. Duration and Exercise of Warrant.
               --------------------------------

     (a)  This Warrant may be exercised as to 100% of the underlying shares at
any time following the date of receipt by the Compensation Committee of the
Board of Directors of the Company's audited financial statements showing the
Company's actual earnings per share for the year ended December 31, 2001
("fiscal 2001"), provided that such earnings are not less than $2.28 per share
(subject to Section 1.1(d)).  Subject to Section 1.1(d), in the event the
Company's actual fiscal 2001 earnings are less than $2.28 per share, but at
least $2.23 per share, then this Warrant shall be exercisable as to the
percentage indicated across from the designated earnings per share target set
forth below:

Fiscal 2001 EPS Threshold                             % of Warrant Exercisable
-------------------------                             ------------------------

                    $2.23                                        50%
                    $2.24                                        60%
                    $2.25                                        70%
                    $2.26                                        80%
                    $2.27                                        90%

The Company shall use its best efforts to deliver to the Compensation Committee
the audited financial statements showing the Company's actual fiscal 2001
earnings per share by March 5, 2002. However, in any case (and subject to
Section 1.2), this Warrant shall vest as to 100% of the underlying shares on
March 5, 2010.  The date this Warrant is first exercisable as to a portion of
the Warrant is hereinafter referred to as the "Exercise Date" for such portion
of the Warrant.  The Company shall give prompt notice to the Warrantholder of
the Exercise Date in accordance with Section 7.6.  This Warrant expires at 5:00
P.M., New York City time on March 22, 2011 (the "Expiration Date").  In
addition, in the event of a Change in Control of the Company, the right to
exercise 100% of the underlying shares shall immediately vest.  A "Change in
Control" shall be deemed to have occurred if:

          (i)  any person, other than the Company or an employee benefit plan of
     the Company, acquires directly or indirectly the Beneficial Ownership (as
     defined in Section 13(d) of the Securities and Exchange Act of 1934, as
     amended (the "Exchange Act")) of any voting security of the Company and
     immediately after such acquisition such Person is, directly or indirectly,
     the Beneficial Owner of voting securities representing 30% or more of the
     total voting power of all of the then-outstanding voting securities of the
     Company;

          (ii) the individuals (A) who, as of the closing date of the Initial
     Public Offering, constitute the Board (the "Original Directors") or (B) who
     thereafter are elected to the Board and whose election, or nomination for
     election, to the Board was approved by a

                                       2
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     vote of at least two-thirds (2/3) of the Original Directors then still in
     office (such directors becoming "Additional Original Directors" immediately
     following their election) or (C) who are elected to the Board and whose
     election, or nomination for election, to the Board was approved by a vote
     of at least two-thirds (2/3) of the Original Directors and Additional
     Original Directors then still in office (such directors also becoming
     "Additional Original Directors" immediately following their election),
     cease for any reason to constitute a majority of the members of the Board;

          (iii)  the stockholders of the Company shall approve a merger,
     consolidation, recapitalization, or reorganization of the Company, a
     reverse stock split of the outstanding voting securities of the Company, or
     consummation of any such transaction if stockholder approval is not sought
     or obtained, other than any such transaction which would result in at least
     75% of the total voting power represented by the voting securities of the
     surviving entity outstanding immediately after such transaction being
     Beneficially Owned by the holders of at least 75% of the outstanding voting
     securities of the Company immediately prior to the transaction, with the
     voting power of each such continuing holder relative to other such
     continuing holders not substantially altered in the transaction; or

          (iv)  the stockholders of the Company shall approve a plan of complete
     liquidation of the Company or an agreement for the sale or disposition by
     the Company of all or a substantial portion of the Company's assets (i.e.,
     50% or more of the total assets of the Company).

     (b)  The rights represented by this Warrant may be exercised by the
Warrantholder of record, in whole, or from time to time in part, by (a)
surrender of this Warrant, accompanied by either the Exercise Form annexed
hereto, or if the Warrantholder decides to exercise the Warrant pursuant to the
broker-assisted cashless exercise program instituted by the Company, an
applicable exercise form provided by the Company (the "Exercise Form") duly
executed by the Warrantholder of record and specifying the number of Warrant
Shares to be purchased, to the Company at the office of the Company located at
3232 McKinney Avenue, Suite 1000, Dallas, Texas 75204 (or such other office or
agency of the Company as it may designate by notice to the Warrantholder at the
address of such Warrantholder appearing on the books of the Company) during
normal business hours on any day (a "Business Day") other than a Saturday,
Sunday or a day on which the New York Stock Exchange is authorized to close or
on which the Company is otherwise closed for business (a "Nonbusiness Day") on
or after 9:00 A.M. New York City time on the applicable Exercise Date but not
later than 5:00 P.M., New York City time, on the Expiration Date (or 5:00 P.M.,
New York City time, on the next succeeding Business Day, if the Expiration Date
is a Nonbusiness Day), (b) delivery of payment to the Company in cash or by
certified or official bank check in New York Clearing House Funds, of the
Exercise Price for the number of Warrant Shares specified in the Exercise Form
(such payment may be made by the Warrantholder directly or by a designated
broker pursuant to the broker-assisted cashless exercise program instituted by
the Company) and (c) such documentation as to the identity and authority of the
Warrantholder as the Company may reasonably request.  Such Warrant Shares

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shall be deemed by the Company to be issued to the Warrantholder as the record
holder of such Warrant Shares as of the close of business on the date on which
this Warrant shall have been surrendered and payment made for the Warrant Shares
as aforesaid. Certificates for the Warrant Shares specified in the Exercise Form
shall be delivered to the Warrantholder (or designated broker, as the case may
be) as promptly as practicable, and in any event within 10 business days,
thereafter. The stock certificates so delivered shall be in denominations of at
least 1,000 shares each or such other denomination as may be specified by the
Warrantholder and agreed upon by the Company, and shall be issued in the name of
the Warrantholder or such other name as shall be designated in the Exercise
Form. If this Warrant shall have been exercised only in part, the Company shall,
at the time of delivery of the certificates for the Warrant Shares, deliver to
the Warrantholder (or designated broker, as the case may be) a new Warrant
evidencing the rights to purchase the remaining Warrant Shares, which new
Warrant shall in all other respects be identical with this Warrant. No
adjustments or payments shall be made on or in respect of Warrant Shares
issuable on the exercise of this Warrant for any cash dividends paid or payable
to holders of record of Common Stock prior to the date as of which the
Warrantholder shall be deemed to be the record holder of such Warrant Shares.

     (c)  With the consent of the Compensation Committee, and subject at all
times to, and only to the extent, if any, permitted under and in accordance
with, laws and regulations and other binding obligations or provisions
applicable to the Company, the Company may make a loan to the Warrantholder with
respect to the exercise of the Warrant, including the payment by the
Warrantholder of any or all federal, state and local income or other taxes due
in connection with any exercise.  The interest on such loan shall be the
Company's cost of money plus an additional 0.5% at the time the loan is made and
such loan shall be made with recourse against the Warrantholder. The
Compensation Committee shall have the full authority to determine any other
terms and provisions of such a loan.

     (d)  In the event the Company sells one or more of its subsidiaries or
businesses during fiscal 2001, the earnings targets set forth in Section 1.1(a)
would be reduced by the earnings budgeted for such divested businesses or
subsidiaries for the remainder of fiscal 2001 (including a reduction relating to
any associated write down of goodwill, if any) and increased by the actual
earnings attributable to any funds received as a result of such sale, all as
determined by the Compensation Committee.

                                       4
<PAGE>

     1.2  Vesting and Exercise.  Once vested, this Warrant may be exercised as
          --------------------
to such vested portion whether or not at the time of such exercise the
Warrantholder is an employee of (or consultant to) the Company (or one or more
of its subsidiaries); however, this Warrant shall automatically terminate as to
any unvested portion at any such time as the Warrantholder is no longer employed
by (or a consultant to) the Company (or any of its subsidiaries).  If this
Warrant is not exercised prior to 5:00 P.M. on the Expiration Date (or the next
succeeding Business Day, if the Expiration Date is a Nonbusiness Day), this
Warrant, or any new Warrant issued pursuant to Section 1.1, shall cease to be
exercisable and shall become void and all rights of the Warrantholder hereunder
shall cease.  This Warrant shall not be exercisable, and no Warrant Shares shall
be issued hereunder, prior to 9:00 A.M., New York City time, on the applicable
Exercise Date.

     1.3  Payment of Taxes.  The issuance of certificates for Warrant Shares
          ----------------
shall be made without charge to the Warrantholder for any stock transfer or
other issuance tax in respect thereto; provided, however, that the Warrantholder
                                       --------  -------
shall be required to pay any and all taxes which may be payable in respect to
any transfer involved in the issuance and delivery of any certificates for
Warrant Shares in a name other than that of the then Warrantholder as reflected
upon the books of the Company.

     1.4  Divisibility of Warrant.  This Warrant may be divided into warrants
          -----------------------
representing one Warrant Share or multiples thereof, upon surrender at the
principal office of the Company on any Business Day, without charge to any
Warrantholder, except as provided below.  The Warrantholder will be charged for
reasonable out-of-pocket costs incurred by the Company in connection with the
division of this Warrant into Warrants representing fewer than one thousand
(1,000) Warrant Shares. Upon any such division, the Warrants may be transferred
of record to a name other than that of the Warrantholder of record; provided,
                                                                    --------
however, that the Warrantholder shall be required to pay any and all transfer
-------
taxes with respect thereto.

     2.   Reservation and Listing of Shares, Etc.
          --------------------------------------

     All Warrant Shares which are issued upon the exercise of the rights
represented by this Warrant shall, upon issuance and payment of the Exercise
Price, be validly issued, fully paid and nonassessable and free from all taxes,
liens, security interests, charges and other encumbrances with respect to the
issue thereof other than taxes in respect of any transfer occurring
contemporaneously with such issue.  During the period within which this Warrant
may be exercised, the Company shall at all times have authorized and reserved,
and keep available free from preemptive rights, a sufficient number of shares of
Common Stock to provide for the exercise of this Warrant, and shall at its
expense use its best efforts to procure such listing thereof (subject to
official notice of issuance) as then may be required on all stock exchanges on
which the Common Stock is then listed or on the Nasdaq National Market.  The
Company shall, from time to time, take all such action as may be required to
assure that the par value per share of the Warrant Shares is at all times equal
to or less than the then effective Exercise Price.

                                       5
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     3.   Exchange, Loss or Destruction of Warrant.
          ----------------------------------------

     If permitted by Section 1.4 and in accordance with the provisions thereof,
upon surrender of this Warrant to the Company with a duly executed instrument of
assignment and funds sufficient to pay any transfer tax, the Company shall,
without charge, execute and deliver a new Warrant of like tenor in the name of
the assignee named in such instrument of assignment and this Warrant shall
promptly be canceled.  Upon receipt by the Company of evidence satisfactory to
it of the loss, theft, destruction or mutilation of this Warrant, and, in the
case of loss, theft or destruction, of such bond or indemnification as the
Company may reasonably require, and, in the case of such mutilation, upon
surrender and cancellation of this Warrant, the Company will execute and deliver
a new Warrant of like tenor.  The term "Warrant" as used herein includes any
Warrants issued in substitution or exchange of this Warrant.

     4.   Ownership of Warrant.
          --------------------

     The Company may deem and treat the person in whose name this Warrant is
registered as the holder and owner hereof (notwithstanding any notations of
ownership or writing hereon made by anyone other than the Company) for all
purposes and shall not be affected by any notice to the contrary, until
presentation of this Warrant for registration of transfer as provided in Section
1.1 or in Section 3.

     5.   Certain Adjustments.
          -------------------

     The Exercise Price at which Warrant Shares may be purchased hereunder, and
the number of Warrant Shares to be purchased upon exercise hereof, are subject
to change or adjustment as follows:

     5.1  The number of Warrant Shares purchasable upon the exercise of this
Warrant and the Exercise Price shall be subject to adjustment as follows:

     (a) In case the Company shall (i) pay a dividend in shares of Common Stock
or make a distribution in shares of Common Stock, (ii) subdivide its outstanding
shares of Common Stock into a greater number of shares of Common Stock, (iii)
combine its outstanding shares of Common Stock into a smaller number of shares
of Common Stock or (iv) issue by reclassification of its shares of Common Stock
other securities of the Company (including any such reclassification in
connection with a consolidation or merger in which the Company is the surviving
corporation), the number of Warrant Shares purchasable upon exercise of this
Warrant (and the Exercise Price) shall be adjusted so that the Warrantholder
shall be entitled to receive (for the aggregate Exercise Price) the kind and
number of Warrant Shares or other securities of the Company that he would have
owned or have been entitled to receive after the happening of any of the events
described above, had this Warrant been exercised immediately prior to the
happening of such event or any record date with respect thereto.  An adjustment
made pursuant to this paragraph (a) shall become effective immediately after the
effective date of such event retroactive to the record date, if any, for such
event.

                                       6
<PAGE>

     (b)  In case the Company shall:

          (i) issue rights, options or warrants to all holders of its
          outstanding Common Stock, without any charge to such holders,
          entitling them to subscribe for or purchase shares of Common Stock at
          a price per share which is lower at the record date for the
          determination of stockholders entitled to receive such rights, options
          or warrants than the then current market price per share of Common
          Stock, or

          (ii) distribute to all holders of its shares of Common Stock evidences
          of its indebtedness or assets (excluding cash dividends or
          distributions payable out of consolidated earnings or earned surplus
          and dividends or distributions referred to in paragraph (a) of this
          Section 5.1) or rights, options or warrants, or convertible or
          exchangeable securities, containing the right to subscribe for or
          purchase shares of Common Stock,

appropriate adjustments shall be made to the number of Warrant Shares
purchasable upon the exercise of the Warrant and/or the Exercise Price in order
to preserve the relative rights and interests of the Warrantholders, such
adjustments to be made by the good faith determination of the Board of Directors
of the Company.

     5.2  Voluntary Adjustment by the Company.  The Company may, at its option,
          -----------------------------------
at any time during the term of the Warrants, reduce the then current Exercise
Price to any amount, consistent with applicable law, deemed appropriate by the
Board of Directors of the Company.

     5.3  Notice of Adjustment.  Whenever the number of Warrant Shares or the
          --------------------
Exercise Price of such Warrant Shares is adjusted, as herein provided, the
Company shall promptly mail first class, postage prepaid, to all Warrantholders,
notice of such adjustment.

     5.4  No Adjustment for Cash Dividends.  No adjustment in respect of any
          --------------------------------
cash dividends shall be made during the term of this Warrant or upon the
exercise of this Warrant.

     5.5  Preservation of Purchase Rights Upon Merger, Consolidation, etc.  In
          ---------------------------------------------------------------
case of any consolidation of the Company with or merger of the Company into
another corporation or in case of any sale, transfer or lease to another
corporation of all or substantially all of the property of the Company, the
Company or such successor or purchasing corporation, as the case may be, shall
execute with the Warrantholders an agreement that the Warrantholders shall have
the right thereafter upon payment of the Exercise Price in effect immediately
prior to such action to purchase upon exercise of this Warrant the kind and
amount of shares and other securities and property that such holder would have
owned or have been entitled to receive after the happening of such
consolidation, merger, sale, transfer or lease had this Warrant been exercised
immediately prior to such action; provided, however, that no adjustment in
                                  --------  -------
respect of cash dividends, interest or other income on or from such shares or
other securities and property shall

                                       7
<PAGE>

be made during the term of this Warrant or upon the exercise of this Warrant.
Such agreement shall provide for adjustments, which shall be as nearly
equivalent as practicable to the adjustments provided for in this Section 5. The
provisions of this Section 5.5 shall apply similarly to successive
consolidations, mergers, sales, transfers or leases.

     6.   Registration Rights of Warrant Shares on Form S-8
          -------------------------------------------------

     On or prior to January 31, 2002, the Company shall file a registration
statement covering the Warrant Shares on a Form S-8, which registration
statement shall be effective upon the filing thereof. The Company shall use its
best efforts to keep such Form S-8 current and effective until the earlier of
the Expiration Date or the date this Warrant has been exercised in full.  The
Company shall use its best efforts to list the Warrant Shares on any securities
exchange (or on the Nasdaq National Market) on which other shares of Common
Stock are listed.

     7.   Miscellaneous.
          -------------

     7.1  Entire Agreement.  This Warrant constitutes the entire agreement
          ----------------
between the Company and the Warrantholder with respect to this Warrant and the
Warrant Shares.

     7.2  Binding Effects; Benefits.  This Warrant shall inure to the benefit of
          -------------------------
and shall be binding upon the Company, the Warrantholder and holders of Warrant
Shares and their respective heirs, legal representatives, successors and
assigns.  Nothing in this Warrant, expressed or implied, is intended to or shall
confer on any person other than the Company, the Warrantholders and holders of
Warrant Shares, or their respective heirs, legal representatives, successors or
assigns, any rights, remedies, obligations or liabilities under or by reason of
this Warrant or the Warrant Shares.

     7.3  Amendments and Waivers.  This Warrant may not be modified or amended
          ----------------------
except by an instrument in writing signed by the Company and Warrantholders that
hold Warrants entitling them to purchase at least 50% of the Warrant Shares.
The Company, any Warrantholder or holder of Warrant Shares may, by an instrument
in writing, waive compliance by the other party with any term or provision of
this Warrant on the part of such other party hereto to be performed or complied
with.  The waiver by any such party of a breach of any term or provision of this
Warrant shall not be construed as a waiver of any subsequent breach.

     7.4  Section and Other Headings.  The section and other headings contained
          --------------------------
in this Warrant are for reference purposes only and shall not be deemed to be a
part of this Warrant or to affect the meaning or interpretation of this Warrant.

     7.5  Further Assurances.  Each of the Company, the Warrantholders and
          ------------------
holders of Warrant Shares shall do and perform all such further acts and things
and execute and deliver all such other certificates, instruments and/or
documents (including without limitation, such proxies and/or powers of attorney
as may be necessary or appropriate) as any party hereto may, at any

                                       8
<PAGE>

time and from time to time, reasonably request in connection with the
performance of any of the provisions of this Warrant.

     7.6  Notices.  All demands, requests, notices and other communications
          -------
required or permitted to be given under this Warrant shall be in writing and
shall be deemed to have been duly given if delivered personally or sent by
United States certified or registered first class mail, postage prepaid, to the
parties hereto at the following addresses or at such other address as any party
hereto shall hereafter specify by notice to the other party hereto:

     (a)  if to the Company, addressed to:

               F.Y.I. Incorporated
               3232 McKinney Avenue
               Suite 1000
               Dallas, Texas 75204
               Attention:  President

     (b)  if to any Warrantholder or holder of Warrant Shares, addressed to the
address of such person appearing on the books of the Company.

Except as otherwise provided herein, all such demands, requests, notices and
other communications shall be deemed to have been received on the date of
personal delivery thereof or on the third Business Day after the mailing
thereof.

     7.7  Separability.  Any term or provision of this Warrant that is invalid
          ------------
or unenforceable in any jurisdiction shall, as to such jurisdiction, be
ineffective to the extent of such invalidity or unenforceability without
rendering invalid or unenforceable any other term or provision of this Warrant
or affecting the validity or enforceability of any of the terms or provisions of
this Warrant in any other jurisdiction.

     7.8  Fractional Shares.  No fractional shares or scrip representing
          -----------------
fractional shares shall be issued upon the exercise of this Warrant.  With
respect to any fraction of a share called for upon any exercise hereof, the
Company shall pay to the Warrantholder an amount in cash equal to such fraction
multiplied by the current market price (as determined as of the date of
exercise, and with reference to the applicable trading market, in accordance
with paragraph (d) of Section 5.1) of a share of such stock as of the date of
such exercise.

     7.9  Rights of the Holder.  The Warrantholder shall not, solely by virtue
          --------------------
of this Warrant, be entitled to any rights of a stockholder of the Company,
either at law or in equity.

     7.10 Governing Law.  This Warrant shall be deemed to be a contract made
          -------------
under the laws of the State of Delaware and for all purposes shall be governed
by and construed in accordance with the laws of such State applicable to
contracts made and performed in Delaware.

                                       9
<PAGE>

     7.11 Effect of Stock Splits, etc.  Whenever any rights under this Agreement
          ---------------------------
are available only when at least a specified minimum number of Warrant Shares is
involved, such number shall be appropriately adjusted to reflect any stock
split, stock dividend, combination of securities into a smaller number of
securities or reclassification of stock.

                                       10
<PAGE>

     IN WITNESS WHEREOF, the Company has caused this Warrant to be signed by its
duly authorized officer.

                                       F.Y.I. INCORPORATED

                                       By:  /s/ Ed H. Bowman, Jr.
                                           ----------------------------
                                           Ed H. Bowman, Jr.
                                           President and Chief Executive Officer

Dated:  March 22, 2001

                                       11
<PAGE>

                                 EXERCISE FORM
                                 -------------

                 (To be executed upon exercise of this Warrant)

     The undersigned, the record holder of this Warrant, hereby irrevocably
elects to exercise the right, represented by this Warrant, to purchase
__________ of the Warrant Shares and herewith tenders payment for such Warrant
Shares to the order of F.Y.I. INCORPORATED, in the amount of $_______ in
accordance with the terms of this Warrant.  The undersigned requests that a
certificate for such Warrant Shares be registered in the name of
_________________________________ and that such certificate be delivered to
_________________________ whose address is ___________________________________.

Date________________________________         Signature__________________________

                                       12<PAGE>

                                                                    EXHIBIT 10.1

                              THIRD AMENDMENT TO
                          REVOLVING CREDIT AGREEMENT
                          --------------------------

     THIS THIRD AMENDMENT TO REVOLVING CREDIT AGREEMENT (the "Amendment") is
made and entered into as of the 1/st/ day of May, 2001 (the "Effective Date"),
by and among CROSS TIMBERS OIL COMPANY, a Delaware corporation ("Company"), the
Banks that are signatories hereto (collectively, the "Banks"), MORGAN GUARANTY
TRUST COMPANY OF NEW YORK, as Administrative Agent for Banks, BANK OF AMERICA,
N.A., as Syndication Agent for Banks, THE CHASE MANHATTAN BANK (as successor by
merger to Chase Bank of Texas, N.A.), as Documentation Agent for Banks, and
FLEET NATIONAL BANK, as Co-Documentation Agent for Banks.

                             W I T N E S S E T H:
                             -------------------

     WHEREAS, Company, Morgan Guaranty Trust Company of New York, as
Administrative Agent for Banks, Bank of America N.A., as Syndication Agent for
Banks, The Chase Manhattan Bank (as successor by merger to Chase Bank of Texas,
N.A.), as Documentation Agent for Banks, Fleet National Bank, as Co-
Documentation Agent for Banks, and Banks have entered into that certain
Revolving Credit Agreement dated as of May 12, 2000 (as amended by that certain
First Amendment to Revolving Credit Agreement dated as of June 20, 2000 among
Company and Banks, as amended by that certain Second Amendment to Revolving
Credit Agreement dated as of February 16, 2001 among Company and Banks, as
amended hereby and as amended from time to time hereafter, the "Loan
Agreement").

     WHEREAS, the parties hereto desire to amend the Loan Agreement as set forth
herein.

     NOW, THEREFORE, in consideration of the premises herein contained and other
good and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the parties, intending to be legally bound, agree as follows:

                                   ARTICLE I
                          Definitions and References
                          --------------------------

     1.01  Unless otherwise specifically defined herein, each term used herein
which is defined in the Loan Agreement as in effect immediately prior to the
Effective Date shall have the meaning assigned to such term in the Loan
Agreement as so in effect. Each reference to "hereof," "hereunder," "herein" and
"hereby" and each other similar reference and each reference to "this Loan
Agreement" and each other similar reference contained in the Loan Agreement
shall from and after the Effective Date refer to the Loan Agreement as amended
hereby.
<PAGE>

                                  ARTICLE II
                                  Amendments
                                  ----------

     2.01. Amendment to Article I; Additional Defined Terms.  Effective as of
           ------------------------------------------------
the Effective Date, Article I of the Loan Agreement is amended by including the
following defined terms:

           "Consolidated Senior Debt Outstanding" shall mean, at any date, the
            ------------------------------------
     aggregate of (i) the Total Outstandings as of such date and (ii) the
     aggregate principal amount of and accrued interest that is unpaid as of
     such date in respect of the Senior Debt."

           "Senior Debt" shall mean any Indebtedness of Company or its
            -----------
     Subsidiaries for borrowed money as evidenced by bonds, indentures, notes,
     debentures or other instruments and agreements and which Indebtedness shall
     not be subordinated in right of payment to the Indebtedness arising under
     this Loan Agreement.  Senior Debt shall not include the Indebtedness
     arising under this Loan Agreement or the Indebtedness permitted in sub-
     clauses (ii) through (xiii) of Section 9.01 of this Loan Agreement, but
     shall be subject to sub-clause (xiv) of Section 9.01 and Section 9.24 of
     this Loan Agreement."

           "Senior Debt Instruments" shall mean the bonds, indentures, notes,
            -----------------------
     debentures or other instruments and agreements, and modifications and
     amendments thereto,  that evidence any of the Senior Debt or pursuant to
     which any of the Senior Debt is issued."

     2.02. Amendment to Article I; Amendment to Certain Defined Terms.
           ----------------------------------------------------------

     A.    Effective as of the Effective Date, the definition of the term
           "Consolidated Current Assets" is amended by including the following
           phrase at the conclusion of such definition:

           "and Consolidated Current Assets shall not include the amount of any
           non-cash items as a result of the application of Financial Accounting
           Standards Board Statement No. 133 and any subsequent amendments
           thereto or the fair value of any Hedge Agreement or any non-hedge
           derivative contract (whether deemed effective or non-effective)."

     B.    Effective as of the Effective Date, the definition of the term
           "Consolidated Current Liabilities" is amended by (i) deleting the
           word "and" immediately preceding sub-clause (iv) of such definition
           and (ii) including the following as sub-clause (v) of such
           definition:

                                       2
<PAGE>

           "and (v) any liabilities as a result of the application of Financial
           Accounting Standards Board Statement No. 133 and any subsequent
           amendments thereto or the fair value of any Hedge Agreement or any
           non-hedge derivative contract (whether deemed effective or non-
           effective)."

     2.03. Amendment to Section 5.06.  Effective as of the Effective Date,
           -------------------------
Section 5.06 of the Loan Agreement is amended by deleting the phrase "Total
Outstandings" wherever such phrase appears in Sections 5.06(a) and (c) and
substituting the phrase "Consolidated Senior Debt Outstanding" therefor.

     2.04. Amendment to Section 7.02.  Effective as of the Effective Date,
           -------------------------
Section 7.02(d) of the Loan Agreement is amended by deleting the phrase "Total
Outstandings" in the second line of such Section and substituting the phrase
"Consolidated Senior Debt Outstanding" therefor.

     2.05. Amendment to Section 8.01.
           -------------------------

     A.    Effective as of the Effective Date, Section 8.01(j) of the Loan
           Agreement is amended by (a) inserting the phrase "or Senior Debt"
           after the phrase "Subordinated Indebtedness" wherever the phrase
           "Subordinated Indebtedness" appears in such sub-clause and (b)
           inserting the phrase "or any Senior Debt Instrument" after the phrase
           "Additional Sub-Debt" wherever the phrase "Additional Sub-Debt"
           appears in such sub-clause.

     B.    Effective as of the Effective Date, Section 8.01 of the Loan
           Agreement is amended by (a) designating Section 8.01(o) of the Loan
           Agreement as Section 8.01(p), (b) inserting the phrase ", Senior
           Debt" after the phrase "Subordinated Indebtedness" in the third line
           of former Section 8.01(o) of the Loan Agreement, and (c) inserting
           the following as Section 8.01(o) of the Loan Agreement:

               "(o)  Senior Debt.  Promptly upon receipt thereof, Company shall
                     ------------
           provide Banks with a true and correct copy of the Senior Debt
           Instruments evidencing any of the Senior Debt and any prospectus and
           registration statements filed with any securities exchange for any
           Senior Debt that becomes publicly traded."

     2.06. Amendment to Section 8.05.  Effective as of the Effective Date,
           -------------------------
Section 8.05 of the Loan Agreement is amended by (a) inserting the phrase "or
any Senior Debt Instrument" after the phrase "Additional Sub-Debt" in the sixth
line of such Section and (b) inserting the phrase "or Senior Debt" after the
phrase "Subordinated Indebtedness" in the eighth line of such Section.

                                       3
<PAGE>

     2.07.  Amendment to Section 8.07.  Effective as of the Effective Date,
            -------------------------
Section 8.07 of the Loan Agreement is amended by inserting the phrase "and any
Senior Debt Instrument" after the phrase "Additional Sub-Debt" in the last line
of such Section.

     2.08.  Amendment to Section 8.24.  Effective as of the Effective Date,
            --------------------------
Section 8.24 of the Loan Agreement is amended by (a) inserting the phrase "and
Senior Debt" after the phrase "Additional Sub-Debt" wherever the phrase
"Additional Sub-Debt" appears in such Section 8.24, including the heading of
such Section, (b) deleting the phrase "Total Outstandings" in the third line of
Section 8.24(b) and substituting the phrase "Consolidated Senior Debt
Outstanding" therefor and (c) inserting "(i)" between the words "discretion" and
"to" in the second line of Section 8.24(c) and inserting the following phrase at
the conclusion of Section 8.24(c) immediately preceding the word "and":

     "and/or (ii) in the case of any public offering of Company's Capital Stock,
     to prepay or redeem any Senior Debt to the extent that such prepayment or
     redemption is permitted under Section 9.23 hereof;"

     2.09.  Amendment to Section 9.01. Effective as of the Effective Date,
            -------------------------
Section 9.01 of the Loan Agreement is amended by (a) deleting the word "and"
immediately preceding sub-clause (xiii) of Section 9.01 and (b) inserting the
following as sub-clause (xiv) of Section 9.01:

            "and (xiv) Senior Debt, provided, however, that (a) none of the
                                    --------  -------
     Senior Debt shall provide for a final maturity date or require a payment of
     principal to be made thereon on or prior to the Maturity Date, except for
     such prepayments and redemptions permitted under Section 9.23 hereof, (b)
     none of the Senior Debt shall be secured by any Lien against any of the
     Mineral Properties or any other assets or properties of Company or any of
     its Subsidiaries that are or may be secured by a Lien in favor of Banks
     pursuant to the terms of this Loan Agreement and (c) the principal amount
     of the Senior Debt shall not cause the Consolidated Senior Debt Outstanding
     to exceed the Borrowing Base then in effect."

     2.10.  Amendment to Section 9.05. Effective as of the Effective Date,
            -------------------------
Section 9.05 of the Loan Agreement is amended by inserting the following
sentence at the conclusion of such Section:

     "Company shall not, and will not permit any of the Subsidiaries to, consent
     to or permit any alterations, amendments or modifications to any Senior
     Debt Instrument without the prior written consent of Majority Banks, except
     for such alterations, amendments or modifications to any Senior Debt
     Instrument that (i) are required to correct typographical errors or for
     clarification purposes or (ii) are, as determined by Agents, neutral, more
     favorable to or not adverse to Banks."

                                       4
<PAGE>

     2.11.  Amendment to Section 9.21. Effective as of the Effective Date,
            -------------------------
Section 9.21 of the Loan Agreement is amended by deleting the phrase "unless
Agents and Majority Banks approve the form of trust indenture therefor (and
Banks shall use reasonable efforts to provide such approval within fifteen (15)
Business Days after receipt of such trust indenture if Agents determine and
advise Banks that the indenture is substantially similar to the trust indenture
for the Hugoton Royalty Trust)" in sub-clause (iii) of Section 9.21 and
substituting the following phrase therefor:

     "unless Agents approve the form of trust indenture therefor (and Agents
     shall provide such approval within two (2) Business Days after receipt of
     such trust indenture if Agents determine that the indenture is
     substantially similar to the trust indenture for the Hugoton Royalty
     Trust)"

     2.12.  Amendment to Section 9.22.  Effective as of the Effective Date,
            --------------------------
Section 9.22 of the Loan Agreement is amended by deleting the phrase "is
approved by Agents and Majority Banks (and Banks shall use reasonable efforts to
provide such approval within fifteen (15) Business Days after receipt of such
trust indenture if Agents determine and advise Banks that the indenture
agreement is substantially similar to the April 1997 Indenture or the October
1997 Indenture)" in sub-clause (v) of Section 9.22 and substituting the
following phrase therefor:

     "is approved by Agents (and Agents shall provide such approval within two
     (2) Business Days after receipt of such trust indenture if Agents determine
     that the indenture agreement is substantially similar to the April 1997
     Indenture or the October 1997 Indenture)"

     2.13.  Inclusion of New Sections 9.23 and 9.24.  Effective as of the
            ---------------------------------------
Effective Date, Section 9.23 of the Loan Agreement is designated as Section 9.25
of the Loan Agreement and the following are inserted immediately prior to such
Section 9.25 as Sections 9.23 and 9.24 of the Loan Agreement:

            "9.23.  Prepayment or Redemption of Senior Debt.  Without the prior
                    ---------------------------------------
     written consent of Majority Banks, Company shall not, and will not permit
     any Subsidiary to, prepay (in whole or in part) any principal due on the
     Senior Debt or redeem (in whole or in part) the Senior Debt or exercise
     Company's rights of defeasance, if any, as may be set forth in any Senior
     Debt Instrument. Notwithstanding the foregoing, provided that no Event of
     Default exists or will occur on the account of such prepayment or
     redemption, and no Borrowing Base Deficiency exists, without the prior
     consent of Majority Banks, Company may use proceeds derived from the public
     offering of any of its Capital Stock, other equity securities of Company or
     trust equity securities of Company to prepay or redeem up to that portion
     of the Senior Debt issued under any Senior Debt Instrument that is
     permitted to be prepaid or redeemed under such Senior Debt Instrument,
     provided that Agents shall determine that the portion of the Senior Debt
     that is permitted to be prepaid or redeemed under such Senior

                                       5
<PAGE>

     Debt Instrument is substantially equal to that portion of outstanding
     Senior Debt that is permitted to be prepaid or redeemed under Senior Debt
     Instruments evidencing publicly traded Senior Debt recently incurred by
     other Persons with bond ratings (as established by a nationally recognized
     rating agency) that are then comparable to Company's bond ratings).

          9.24.  Senior Debt.  Company may not incur any Indebtedness in
                 -----------
     connection with any Senior Debt unless (i) the terms of the Indebtedness
     incurred in connection with Senior Debt are permitted under Section
     9.01(xiv) hereof, (ii) the Senior Debt Instrument evidencing the Senior
     Debt is approved by Agents (and Agents shall provide such approval or
     disapproval (as applicable) within two (2) Business Days after receipt of
     such Senior Debt Instrument, and (iii) Agents shall determine that the
     Senior Debt Instrument contains terms, conditions and provisions
     substantially similar to the terms, conditions and provisions of Senior
     Debt Instruments evidencing publicly traded Senior Debt recently incurred
     by other Persons with bond ratings (as established by a nationally
     recognized rating agency) that are then comparable to Company's bond
     ratings). Further, Company shall not incur any Indebtedness in connection
     with any Senior Debt if (a) an Event of Default exists hereunder or, with
     the lapse of time and the giving of notice or both, an Event of Default
     would exist hereunder, (b) incurring such Indebtedness would cause an Event
     of Default hereunder, or (c) a Borrowing Base Deficiency exists hereunder."

     2.14.  Amendment to Section 10.01. Effective as of the Effective Date,
            --------------------------
Section 10.01 is amended by (a) deleting the word "or' at the conclusion of
sub-clause (p) of Section 10.01, (b) replacing the period (.) at the conclusion
of sub-clause (q) of Section 10.01 with a semicolon (;) and (c) inserting the
following as sub-clauses (r), (s) and (t) of Section 10.01:

     "(r)  an event of default shall exist under the terms of any
     Senior Debt Instrument;

     (s)   any holder of any of the Senior Debt shall do any of the following:
     (i) accelerate the maturity of any of the Senior Debt, (ii) pursue or
     exercise any remedies provided for in any Senior Debt Instrument, (iii) sue
     for or collect any amount due on any of the Senior Debt or (iv) file a
     petition or complaint against Company seeking bankruptcy or reorganization
     of Company or the appointment of a receiver, custodian, trustee, intervenor
     or liquidator of Company; or

     (t)   without the prior written consent of Majority Banks, Company or any
     Subsidiary shall prepay (in whole or in part) any of the Senior Debt or
     redeem (in whole or in part) any of the Senior Debt or Company or any
     Subsidiary shall exercise its rights of defeasance, if any, as set forth in
     any

                                       6
<PAGE>

     Senior Debt Instrument, unless such prepayment, redemption or exercise of
     rights of defeasance is permitted according to Section 9.23 hereof."

                                  ARTICLE III
                        Borrowing Base Redetermination.
                        -------------------------------

     3.01  Borrowing Base Redetermination. Pursuant to Section 5.03 of the Loan
           ------------------------------
Agreement, effective as of June 30, 2001, and until redetermined pursuant to
Section 5.03, 5.04 or 5.05 of the Loan Agreement, the Borrowing Base is
$1,230,000,000; provided, however, that if any Borrowing Base adjustments are
made pursuant to Sections 5.04 or 5.05 of the Loan Agreement between the
Effective Date and June 30, 2001, then the Borrowing Base as redetermined as of
June 30, 2001 shall be adjusted accordingly (and Company's Borrowing Base
Certificate submitted for each such adjustment shall set forth the proposed
Borrowing Base prior to and effective as of June 30, 2001).

                                  ARTICLE IV
                              Condition Precedent
                              -------------------

     4.01. Counterparts; Conditions to Effectiveness. This instrument shall
           -----------------------------------------
become effective (and the Loan Agreement shall be amended with the amendments
referred to herein) as of the Effective Date when Administrative Agent shall
have received a duly executed counterpart hereof signed by Company and Majority
Banks (or, in the case of any Bank included within Majority Banks as to which an
executed counterpart shall not have been received, Administrative Agent shall
have received telegraphic, telex or other written confirmation from such party
of execution of a counterpart hereof by such Bank).

     4.02. Amendment Fee. Upon Administrative Agent's receipt of duly executed
           -------------
counterparts hereof signed by Company and Majority Banks, Company shall pay to
Administrative Agent a fee in the amount $5,000 for each Bank that has executed
a counterpart of this Amendment and delivered such counterpart of this Amendment
to Administrative Bank on or before May 1, 2001. Administrative Agent shall
distribute such fee to such Banks who have executed, and delivered to
Administrative Bank on or before the prescribed date, its counterpart of this
Amendment. The fee payable under this Section 4.02 shall be paid by Company to
Administrative Agent within three (3) Business Days after Company's receipt of
Administrative Agent's written request or invoice for same.

                                   ARTICLE V
                 Ratifications, Representations and Warranties
                 ---------------------------------------------

     5.01. Ratifications. The terms and provisions set forth herein shall modify
           -------------
and supersede all inconsistent terms and provisions set forth in the Loan
Agreement

                                       7
<PAGE>

immediately before giving effect hereto and the other Loan Papers, and, except
as expressly modified, amended, and superseded herein, the terms and provisions
of the Loan Agreement and the other Loan Papers are ratified and confirmed and
shall continue in full force and effect. Company and Banks agree that the Loan
Agreement, as amended hereby, and the other Loan Papers shall continue to be
legal, valid, binding and enforceable in accordance with their respective terms.

     5.02.  Representations, Warranties and Agreements. Company hereby
            ------------------------------------------
represents and warrants to Banks that (a) the execution, delivery and
performance of the Loan Agreement as amended hereby has been authorized by all
requisite corporate action on the part of Company and will not violate the
Articles/Certificate of Incorporation or Bylaws of Company; (b) the
representations and warranties contained in the Loan Agreement, as amended
hereby, and any other Loan Papers are true and correct on and as of the date
hereof and on and as of the date of execution hereof as though made on and as of
each such date; (c) no Default or Event of Default under the Loan Agreement, as
amended hereby, has occurred and is continuing; and (d) Company is in full
compliance with all covenants and agreements contained in the Loan Agreement and
the other Loan Papers, as amended hereby.

                                  ARTICLE VI
                          Ratifications by Guarantors
                          ---------------------------

     6.01.  Ratification by Guarantors. CT Operating, CT Trading and the Gas
            --------------------------
Marketing Subsidiaries (collectively, the "Guarantors") hereby acknowledge and
agree to the terms hereof and hereby ratify and reaffirm all of their respective
obligations under their unconditional guaranties of the Loan and Obligation (the
"Guaranties"). Guarantors also hereby agree that nothing in this Amendment shall
adversely affect any right or remedy of Banks under the Guaranties and that the
execution and delivery of this Amendment shall in no way change or modify their
respective obligations as guarantor under the Guaranties. Although the
Guarantors have been informed by Company of the matters set forth in this
Amendment and the Guarantors have acknowledged and agreed to the same, the
Guarantors understand that Banks have no duty to notify Guarantors or to seek
Guarantors' acknowledgment or agreement, and nothing contained herein shall
create such a duty as to any transaction hereafter.

                                  ARTICLE VII
                            Miscellaneous Provisions
                            ------------------------

     7.01.  Reference to Loan Agreement. The other Loan Papers, and any and all
            ---------------------------
other agreements, documents or instruments now or hereafter executed and
delivered pursuant to the terms hereof or pursuant to the terms of the Loan
Agreement, as amended hereby, are hereby amended so that any reference in the
Loan Agreement and such other Loan Papers to the Loan Agreement shall mean a
reference to the Loan Agreement as amended hereby.

                                       8
<PAGE>

     7.02.  Expenses of Agents.  As provided in the Loan Agreement, Company
            ------------------
agrees to pay on demand all reasonable costs and expenses incurred by Agents in
connection with the preparation, negotiation and execution of this Amendment,
including, without limitation, the costs and fees of Agent's legal counsel, and
all reasonable costs and expenses incurred by Banks in connection with the
enforcement or preservation of any rights under the Loan Agreement, as amended
hereby, or any other Loan Papers, including, without, limitation, the reasonable
costs and fees of Agents' legal counsel. Company shall not be responsible for
the cost or expense of legal counsel of any other Bank in connection with the
preparation, execution and delivery of this Amendment.

     7.03.  Counterparts.  This instrument may be executed in one or more
            ------------
counterparts, each of which when so executed shall be deemed to be an original,
but all of which when taken together shall constitute one and the same
instrument.

     7.04.  Headings.  The headings, captions, and arrangements used herein are
            --------
for convenience only and shall not affect the interpretation of this instrument.

     7.05.  Applicable Law.  THE LOAN AGREEMENT AS AMENDED HEREBY AND ALL OTHER
            --------------
LOAN PAPERS EXECUTED PURSUANT HERETO SHALL BE DEEMED TO HAVE BEEN MADE AND TO BE
PERFORMABLE IN AND SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE
LAWS OF THE STATE OF TEXAS UNLESS THE LAWS GOVERNING NATIONAL BANKS SHALL HAVE
APPLICATION.

     7.06.  Final Agreement.  THE LOAN AGREEMENT AS AMENDED HEREBY AND THE OTHER
            ---------------
LOAN PAPERS, EACH AS AMENDED HEREBY, REPRESENT THE ENTIRE EXPRESSION OF THE
PARTIES WITH RESPECT TO THE SUBJECT MATTER HEREOF ON THE EFFECTIVE DATE THIS
AMENDMENT IS EXECUTED. THE LOAN AGREEMENT AS AMENDED HEREBY AND THE OTHER LOAN
PAPERS, AS AMENDED HEREBY, MAY NOT BE CONTRADICTED BY EVIDENCE OF PRIOR,
CONTEMPORANEOUS OR SUBSEQUENT ORAL AGREEMENTS OF THE PARTIES. THERE ARE NO
UNWRITTEN ORAL AGREEMENTS BETWEEN THE PARTIES. NO MODIFICATION, RESCISSION,
WAIVER, RELEASE OR AMENDMENT OF ANY PROVISION OF THE LOAN AGREEMENT OR THE OTHER
LOANS PAPERS SHALL BE MADE, EXCEPT BY A WRITTEN AGREEMENT SIGNED BY COMPANY AND
EITHER BANKS OR MAJORITY BANKS, AS PROVIDED IN THE LOAN AGREEMENT.

     IN WITNESS WHEREOF, this Amendment has been executed in multiple originals
and is effective as of the date first above-written.

                          [SIGNATURE PAGES TO FOLLOW]

                                       9
<PAGE>

                             COMPANY:
                             -------

                             CROSS TIMBERS OIL COMPANY,
                             a Delaware corporation

                             By:   JOHN O'REAR
                                   --------------------------------------------
                                   John O'Rear, Vice President and Treasurer

                             GUARANTORS:
                             ----------

                             CROSS TIMBERS OPERATING COMPANY,
                             a Texas corporation

                             By:   JOHN O'REAR
                                   --------------------------------------------
                                   John O'Rear, Vice President and Treasurer

                             CROSS TIMBERS TRADING COMPANY,
                             a Texas corporation

                             By:   JOHN O'REAR
                                   --------------------------------------------
                                   John O'Rear, Vice President and Treasurer

                             RINGWOOD GATHERING COMPANY,
                             a Delaware corporation

                             By:   LOUIS G. BALDWIN
                                   --------------------------------------------
                                   Louis G. Baldwin, Vice President
                                   and Treasurer

                             CROSS TIMBERS ENERGY SERVICES, INC.,
                             a Texas corporation

                             By:   LOUIS G. BALDWIN
                                   --------------------------------------------
                                   Louis G. Baldwin, Vice President
                                   and Treasurer

                                       10
<PAGE>

                                TIMBERLAND GATHERING & PROCESSING
                                COMPANY, a Texas corporation

                                By:    LOUIS G. BALDWIN
                                       --------------------------------------
                                       Louis G. Baldwin, Vice President
                                       and Treasurer

                                BANKS:
                                -----

                                MORGAN GUARANTY TRUST COMPANY
                                 OF NEW YORK

                                By:    JOHN G. KOWALCZUK
                                       --------------------------------------
                                       John G. Kowalczuk, Vice President

                                BANK OF AMERICA, N.A.

                                By:    J. SCOTT FOWLER
                                       --------------------------------------
                                       J. Scott Fowler, Managing Director

                                THE CHASE MANHATTAN BANK

                                By:    ROBERT C. MERTENSOTTO
                                       --------------------------------------
                                Name:  Robert C. Mertensotto
                                       --------------------------------------
                                Title: Managing Director
                                       --------------------------------------

                                FLEET NATIONAL BANK

                                By:    JEFFREY H. RATHKAMP
                                       --------------------------------------
                                Name:  Jeffery H. Rathkamp
                                       --------------------------------------
                                Title: Vice President
                                       --------------------------------------

                                ABN-AMRO BANK N.V., HOUSTON AGENCY
                                By:    ABN-AMRO NORTH AMERICA, INC.

                                By:    WILLIAM M. GUILFORD
                                       --------------------------------------
                                Name:  William M. Guilford
                                       --------------------------------------
                                Title: Senior Vice President
                                       --------------------------------------

                                By:    JOHN D. REED
                                       --------------------------------------
                                Name:  John D. Reed
                                       --------------------------------------
                                Title: Assistant Vice President
                                       --------------------------------------

                                       11
<PAGE>

                                  BANK ONE, TEXAS, N.A.

                                  By:    MARK CRANMER
                                         --------------------------------------
                                         W.M. (Mark) Cranmer, Vice President

                                  BNP PARIBAS

                                  By:    A. DAVID DODD
                                         --------------------------------------
                                  Name:  A. David Dodd
                                         --------------------------------------
                                  Title: Vice President
                                         --------------------------------------

                                  By:    LARRY ROBINSON
                                         --------------------------------------
                                  Name:  Larry Robinson
                                         --------------------------------------
                                  Title: Vice President
                                         --------------------------------------

                                  FIRST UNION NATIONAL BANK

                                  By:    ROBERT R. WETTEROFF
                                         --------------------------------------
                                  Name:  Robert R. Wetteroff
                                         --------------------------------------
                                  Title: Senior Vice President
                                         --------------------------------------

                                  BANK OF MONTREAL

                                  By:    J.B. WHITMORE
                                         --------------------------------------
                                  Name:  J.B. Whitmore
                                         --------------------------------------
                                  Title: Director
                                         --------------------------------------

                                  THE BANK OF NEW YORK

                                  By:    RAYMOND J. PALMER
                                         --------------------------------------
                                  Name:  Raymond J. Palmer
                                         --------------------------------------
                                  Title: Vice President
                                         --------------------------------------

                                  THE BANK OF NOVA SCOTIA

                                  By:    F.C.H. ASHBY
                                         --------------------------------------
                                  Name:  F.C.H. Ashby
                                         --------------------------------------
                                  Title: Senior Manager Loan Operations
                                         --------------------------------------

                                       12
<PAGE>

                              BANK OF SCOTLAND

                              By:    JOSEPH FRATUS
                                     -------------------------------------------
                              Name:  Joseph Fratus
                                     -------------------------------------------
                              Title: Vice President
                                     -------------------------------------------

                              COMERICA BANK-TEXAS

                              By:    MICHELE L. JONES
                                     -------------------------------------------
                              Name:  Michele L. Jones
                                     -------------------------------------------
                              Title: Vice President
                                     -------------------------------------------

                              CREDIT LYONNAIS NEW YORK BRANCH

                              By:    PHILIPPE SOUSTRA
                                     -------------------------------------------
                              Name:  Philippe Soustra
                                     -------------------------------------------
                              Title: Executive Vice President
                                     -------------------------------------------

                              FORTIS CAPITAL CORP.
                              (f/k/a MeesPierson Capital Corp.)

                              By:    DEIDRE M. SANBORN
                                     -------------------------------------------
                                     Deidre M. Sanborn, Vice President

                              By:    DARRELL HOLLEY
                                     -------------------------------------------
                                     Darrell Holley, Managing Director

                              Natexis Banques Populaires
                              (f/k/a NATEXIS Banque)

                              By:    DONOVAN C. BROUSSARD
                                     -------------------------------------------
                              Name:  Donovan C. Broussard
                                     -------------------------------------------
                              Title: Vice President
                                     -------------------------------------------

                              By:    RENAUD J. D'HERBES
                                     -------------------------------------------
                              Name:  Renaud J. d'Herbes
                                     -------------------------------------------
                              Title: Senior Vice President and Regional Manager
                                     -------------------------------------------

                              U.S. BANK NATIONAL ASSOCIATION

                              By:    MARK E. THOMPSON
                                     -------------------------------------------
                                     Mark E. Thompson, Vice President

                                       13
<PAGE>

                                  WELLS FARGO BANK (TEXAS), N.A.

                                  By:   CHARLES D. KIRKHAM
                                        ---------------------------------------
                                        Charles D. Kirkham, Vice President

                                  CREDIT AGRICOLE INDOSUEZ

                                  By:    BRIAN D. KNEZEAK
                                         --------------------------------------
                                  Name:  Brian D. Knezeak
                                         --------------------------------------
                                  Title: First Vice President
                                         --------------------------------------

                                  By:    PATRICK COCQUEREL
                                         --------------------------------------
                                  Name:  Patrick Cocquerel
                                         --------------------------------------
                                  Title: FVP, Managing Director
                                         --------------------------------------

                                  INDUSTRIAL BANK OF JAPAN, LIMITED
                                  New York Branch

                                  By:    MICHAEL N. OAKES
                                         --------------------------------------
                                  Name:  Michael N. Oakes
                                         --------------------------------------
                                  Title: Senior Vice President, Houston Office
                                         --------------------------------------

                                  FROST NATIONAL BANK

                                  By:    JOHN S. WARREN
                                         --------------------------------------
                                         John S. Warren, Senior Vice President

                                       14

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