SANTA FE SNYDER CORP
8-K, 1999-06-15
CRUDE PETROLEUM & NATURAL GAS
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===============================================================================
                                 UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549


                                    FORM 8-K


                                 CURRENT REPORT

                       PURSUANT TO SECTION 13 OR 15(d) OF
                      THE SECURITIES EXCHANGE ACT OF 1934


                         DATE OF REPORT: JUNE 14, 1999
                (DATE OF EARLIEST EVENT REPORTED: JUNE 10, 1999)


                          SANTA FE SNYDER CORPORATION
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)


<TABLE>
<S>                                          <C>                                   <C>
           DELAWARE                          1-7667                                36-2722169
(STATE OR OTHER JURISDICTION           (COMMISSION FILE NO.)           (I.R.S. EMPLOYER  IDENTIFICATION NO.)
         OF INCORPORATION)
</TABLE>



                               1616 S. VOSS ROAD
                                   SUITE 1000
                             HOUSTON, TEXAS 770057
              (ADDRESS OF PRINCIPAL EXECUTIVE OFFICES) (ZIP CODE)


                                 (713) 507-5000
              (REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE)



<PAGE>   2


ITEM 5.  OTHER EVENTS.

         On June 10, 1999, Santa Fe Snyder Corporation (the "Company") entered
into an Underwriting Agreement with Salomon Smith Barney Inc., Donaldson,
Lufkin & Jenrette Securities Corporation, Bear, Stearns & Co. Inc., Credit
Suisse First Boston Corporation, Goldman Sachs & Co., ABN AMRO Incorporated,
Banc One Capital Markets, Inc. and Credit Lyonnais Securities (USA) Inc.,
pursuant to which the Company issued $125 million aggregate principal amount of
8.05% Senior Notes Due 2004 (the "Notes"). The net proceeds from the sale of
the Notes were approximately $121 million, and will be used by the Company to
repay outstanding indebtedness.

ITEM 7.  FINANCIAL STATEMENTS AND EXHIBITS.

         (c)    EXHIBITS.

         Exhibit
         Number                     Description

           1.1      Underwriting Agreement dated June 10, 1999

           4.1      Indenture dated as of June 1, 1999, between the Company and
                    The Bank of New York, as Trustee

           4.2      First Supplemental Indenture dated as of June 14, 1999,
                    between the Company and The Bank of New York, as Trustee,
                    including the form of 8.05% Senior Note Due 2004

           5.1      Opinion of Andrews & Kurth L.L.P. as to the legality of the
                    Notes

           12.1     Computation of Pro Forma Ratio of Earnings to Fixed Charges
                    After Adjustment for Issuance of Debentures and Computation
                    of Supplemental Pro Forma Ratio of Earnings to Fixed Charges
                    After Adjustment for Issuance of Debentures

           23.1     Consent of Andrews & Kurth L.L.P. (included in Exhibit 5.1)

           25.1     Form T-1 Statement of Eligibility of The Bank of New York



<PAGE>   3


                                   SIGNATURE

         Pursuant to the requirements of the Securities Exchange Act of 1934,
the registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.


                                       SANTA FE SNYDER CORPORATION



                                       By: /s/ Mark A. Older
                                           -------------------------------------
                                           Mark A. Older
                                           Corporate Secretary


Date: June 14, 1999



<PAGE>   4


                               INDEX TO EXHIBITS


<TABLE>
<CAPTION>
Exhibit
Number                     Description
- ------                     -----------

<S>           <C>
 1.1          Underwriting Agreement dated June 10, 1999

 4.1          Indenture dated as of June 1, 1999, between the Company and The
              Bank of New York, as Trustee

 4.2          First Supplemental Indenture dated as of June 14, 1999, between
              the Company and The Bank of New York, as Trustee, including the
              form of 8.05% Senior Note Due 2004

 5.1          Opinion of Andrews & Kurth L.L.P. as to the legality of the Notes

 12.1         Computation of Pro Forma Ratio of Earnings to Fixed Charges
              After Adjustment for Issuance of Debentures and Computation
              of Supplemental Pro Forma Ratio of Earnings to Fixed Charges
              After Adjustment for Issuance of Debentures

 23.1         Consent of Andrews & Kurth L.L.P. (included in Exhibit 5.1)

 25.1         Form T-1 Statement of Eligibility of The Bank of New York
</TABLE>

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                                                                     EXHIBIT 1.1




                           SANTA FE SNYDER CORPORATION

                      8.05% SENIOR NOTES DUE JUNE 15, 2004

                             UNDERWRITING AGREEMENT


                                                              New York, New York
                                                                   June 10, 1999

To the Representatives named in Schedule I
  hereto of the Underwriters named in
  Schedule II hereto


Ladies and Gentlemen:

         Santa Fe Snyder Corporation, a corporation organized under the laws of
Delaware (the "Company"), proposes to sell to the several underwriters named in
Schedule II hereto (the "Underwriters"), for whom you (the "Representatives")
are acting as representatives, the principal amount of its securities identified
in Schedule I hereto (the "Securities"), to be issued under an indenture (the
"Indenture") dated as of June 1, 1999, between the Company and The Bank of New
York, as trustee (the "Trustee"). To the extent there are no additional
Underwriters listed on Schedule I other than you, the term Representatives as
used herein shall mean you, as Underwriters, and the terms Representatives and
Underwriters shall mean either the singular or plural as the context requires.
Any reference herein to the Registration Statement, the Basic Prospectus, any
Preliminary Final Prospectus or the Final Prospectus shall be deemed to refer to
and include the documents incorporated by reference therein pursuant to Item 12
of Form S-3 which were filed under the Exchange Act on or before the Effective
Date of the Registration Statement or the issue date of the Basic Prospectus,
any Preliminary Final Prospectus or the Final Prospectus, as the case may be;
and any reference herein to the terms "amend", "amendment" or "supplement" with
respect to the Registration Statement, the Basic Prospectus, any Preliminary
Final Prospectus or the Final Prospectus shall be deemed to refer to and include
the filing of any document under the Exchange Act after the Effective Date of
the Registration Statement or the issue date of the Basic Prospectus, any
Preliminary Final Prospectus or the Final Prospectus, as the case may be, deemed
to be incorporated therein by reference. Certain terms used herein are defined
in Section 17 hereof.

         1. Representations and Warranties. The Company represents and warrants
to, and agrees with, each Underwriter as set forth below in this Section 1.

                  (a) The Company meets the requirements for use of Form S-3
         under the Act and has prepared and filed with the Commission a
         registration statement (the file number of


<PAGE>   2

         which is set forth in Schedule I hereto) on Form S-3, including a
         related basic prospectus, for registration under the Act of the
         offering and sale of the Securities. The Company may have filed one or
         more amendments thereto, including a Preliminary Final Prospectus, each
         of which has previously been furnished to you. The Company will next
         file with the Commission one of the following: (1) after the Effective
         Date of such registration statement, a final prospectus supplement
         relating to the Securities in accordance with Rules 430A and 424(b),
         (2) prior to the Effective Date of such registration statement, an
         amendment to such registration statement (including the form of final
         prospectus supplement) or (3) a final prospectus in accordance with
         Rules 415 and 424(b). In the case of clause (1), the Company has
         included in such registration statement, as amended at the Effective
         Date, all information (other than Rule 430A Information) required by
         the Act and the rules thereunder to be included in such registration
         statement and the Final Prospectus. As filed, such final prospectus
         supplement or such amendment and form of final prospectus supplement
         shall contain all Rule 430A Information, together with all other such
         required information, and, except to the extent the Representatives
         shall agree in writing to a modification, shall be in all substantive
         respects in the form furnished to you prior to the Execution Time or,
         to the extent not completed at the Execution Time, shall contain only
         such specific additional information and other changes (beyond that
         contained in the Basic Prospectus and any Preliminary Final Prospectus)
         as the Company has advised you, prior to the Execution Time, will be
         included or made therein. The Registration Statement, at the Execution
         Time, meets the requirements set forth in Rule 415(a)(1)(x).

                  (b) On the Effective Date, the Registration Statement did or
         will, and when the Final Prospectus is first filed (if required) in
         accordance with Rule 424(b) and on the Closing Date (as defined
         herein), the Final Prospectus (and any supplement thereto) will, comply
         in all material respects with the applicable requirements of the Act,
         the Exchange Act and the Trust Indenture Act and the respective rules
         thereunder; on the Effective Date and at the Execution Time, the
         Registration Statement did not or will not contain any untrue statement
         of a material fact or omit to state any material fact required to be
         stated therein or necessary in order to make the statements therein not
         misleading; on the Effective Date and on the Closing Date the Indenture
         did or will comply in all material respects with the applicable
         requirements of the Trust Indenture Act and the rules thereunder; and,
         on the Effective Date, the Final Prospectus, if not filed pursuant to
         Rule 424(b), will not, and on the date of any filing pursuant to Rule
         424(b) and on the Closing Date, the Final Prospectus (together with any
         supplement thereto) will not, include any untrue statement of a
         material fact or omit to state a material fact necessary in order to
         make the statements therein, in the light of the circumstances under
         which they were made, not misleading; provided, however, that the
         Company makes no representations or warranties as to (i) that part of
         the Registration Statement which shall constitute the Statement of
         Eligibility and Qualification (Form T-1) under the Trust Indenture Act
         of the Trustee or (ii) the information contained in or omitted from the
         Registration Statement or the Final Prospectus (or any supplement
         thereto) in reliance upon and in conformity with information furnished
         in writing to the Company by or on behalf of any Underwriter through
         the Representatives specifically for inclusion in the Registration
         Statement or the Final Prospectus (or any supplement thereto).




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<PAGE>   3

                  (c) Each of the Company and its subsidiaries has been duly
         incorporated and is validly existing as a corporation in good standing
         under the laws of the jurisdiction in which it is chartered or
         organized with full corporate power and authority to own or lease, as
         the case may be, and to operate its properties and conduct its business
         as described in the Final Prospectus, and is duly qualified to do
         business as a foreign corporation and is in good standing under the
         laws of each jurisdiction which requires such qualification.

                  (d) All the outstanding shares of capital stock of each
         subsidiary have been duly and validly authorized and issued and are
         fully paid and nonassessable, and, except as otherwise set forth in the
         Final Prospectus, all outstanding shares of capital stock of the
         subsidiaries are owned by the Company either directly or through wholly
         owned subsidiaries free and clear of any perfected security interest or
         any other security interests, claims, liens or encumbrances.

                  (e) the Company's authorized equity capitalization is as set
         forth in the Final Prospectus, and the capital stock of the Company
         conforms in all material respects to the description thereof contained
         in the Final Prospectus.

                  (f) The Company is not, and after giving effect to the
         offering and sale of the Securities and the application of the proceeds
         thereof as described in the Final Prospectus will not be, an
         "investment company" within the meaning of the Investment Company Act,
         without taking account of any exemption arising out of the number of
         holders of the Company's securities.

                  (g) The Company is subject to and in full compliance with the
         reporting requirements of Section 13 or Section 15(d) of the Exchange
         Act.

                  (h) The Company has not paid or agreed to pay to any person
         any compensation for soliciting another to purchase any of the
         Securities of the Company (except as contemplated by this Agreement).

                  (i) The Company has not taken, directly or indirectly, any
         action designed to cause or which has constituted or which might
         reasonably be expected to cause or result, under the Exchange Act or
         otherwise, in the stabilization or manipulation of the price of any
         security of the Company to facilitate the sale or resale of the
         Securities.

                  (j) The statements in the Final Prospectus under the heading
         "Description of Notes" fairly summarize the matters therein described.

                  (k) This Agreement has been duly authorized, executed and
         delivered by the Company; the Indenture has been duly authorized and,
         assuming due authorization, execution and delivery thereof by the
         Trustee, when executed and delivered by the Company, will constitute a
         legal, valid, binding instrument enforceable against the Company in
         accordance with its terms (subject, as to the enforcement of remedies,
         to applicable bankruptcy, reorganization, insolvency, moratorium or
         other laws affecting



                                       3
<PAGE>   4

         creditors' rights generally from time to time in effect and to general
         principles of equity); the Securities have been duly authorized, and,
         when executed and authenticated in accordance with the provisions of
         the Indenture and delivered to and paid for by the Underwriters, will
         have been duly executed and delivered by the Company and will
         constitute the legal, valid and binding obligations of the Company
         entitled to the benefits of the Indenture (subject, as to the
         enforcement of remedies, to applicable bankruptcy, insolvency,
         moratorium or other laws affecting creditors' rights generally from
         time to time in effect and to general principles of equity).

                  (l) No consent, approval, authorization, filing with or order
         of any court or governmental agency or body is required in connection
         with the transactions contemplated herein or in the Indenture, except
         such as will be obtained under the Act and the Trust Indenture Act and
         such as may be required under the blue sky laws of any jurisdiction in
         connection with the purchase and distribution of the Securities by the
         Underwriters in the manner contemplated herein and in the Final
         Prospectus.

                  (m) Neither the execution and delivery of the Indenture or
         this Agreement, the issue and sale of the Securities, nor the
         consummation of any other of the transactions herein or therein
         contemplated, nor the fulfillment of the terms hereof or thereof will
         conflict with, result in a breach or violation or imposition of any
         lien, charge or encumbrance upon any property or assets of the Company
         or any of its subsidiaries pursuant to, (i) the charter or by-laws of
         the Company or any of its subsidiaries; (ii) the terms of any
         indenture, contract, lease, mortgage, deed of trust, note agreement,
         loan agreement or other agreement, obligation, condition, covenant or
         instrument to which the Company or any of its subsidiaries is a party
         or bound or to which its or their property is subject; or (iii) any
         statute, law, rule, regulation, judgment, order or decree applicable to
         the Company or any of its subsidiaries of any court, regulatory body,
         administrative agency, governmental body, arbitrator or other authority
         having jurisdiction over the Company or any of its subsidiaries or any
         of its or their properties.

                  (n) The consolidated historical financial statements and
         schedules of the Company and its consolidated subsidiaries included in
         the Final Prospectus present fairly in all material respects the
         consolidated financial condition, results of operations and cash flows
         of the Company and its subsidiaries as of the dates and for the periods
         indicated, comply in all material respects as to form with the
         applicable accounting requirements of the Act and have been prepared in
         conformity with generally accepted accounting principles applied on a
         consistent basis throughout the periods involved (except as otherwise
         noted therein); the selected financial data set forth under the caption
         "Summary Historical Consolidated Financial and Operating Data" in the
         Final Prospectus fairly present, on the basis stated in the Final
         Prospectus, the information included therein; the pro forma combined
         financial data included in the Final Prospectus includes assumptions
         that provide a reasonable basis for presenting the significant effects
         directly attributable to the transactions and events described therein,
         the related pro forma adjustments give appropriate effect to those
         assumptions, and the pro forma adjustments reflect the proper
         application of those adjustments to the historical financial statement
         amounts in the pro forma combined financial data included in the Final
         Prospectus; the



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         pro forma combined financial data included in the Final Prospectus
         complies as to form in all material respects with the applicable
         accounting requirements of Regulation S-X under the Act; and the pro
         forma adjustments have been properly applied to the historical amounts
         in the compilation of such data.

                  (o) No action, suit or proceeding by or before any court or
         governmental agency, authority or body or any arbitrator involving the
         Company or any of its subsidiaries or its or their property is pending
         or, to the best knowledge of the Company, threatened that (i) could
         reasonably be expected to have a material adverse effect on the
         performance of this Agreement or the Indenture, or the consummation of
         any of the transactions contemplated hereby or thereby; or (ii) could
         reasonably be expected to have a material adverse effect on the
         condition (financial or otherwise), prospects, earnings, business or
         properties of the Company and its subsidiaries, taken as a whole,
         whether or not arising from transactions in the ordinary course of
         business, except as set forth in or contemplated in the Final
         Prospectus (exclusive of any amendment or supplement thereto).

                  (p) Each of the Company and each of its subsidiaries owns or
         leases all such properties as are necessary to the conduct of its
         operations as presently conducted.

                  (q) Neither the Company nor any subsidiary is in violation or
         default of (i) any provision of its charter or bylaws; (ii) the terms
         of any indenture, contract, lease, mortgage, deed of trust, note
         agreement, loan agreement or other agreement, obligation, condition,
         covenant or instrument to which it is a party or bound or to which its
         property is subject; or (iii) any statute, law, rule, regulation,
         judgment, order or decree applicable to the Company or any of its
         subsidiaries of any court, regulatory body, administrative agency,
         governmental body, arbitrator or other authority having jurisdiction
         over the Company or such subsidiary or any of its properties, as
         applicable, which violation or default in the case of clauses (ii) and
         (iii), individually or in the aggregate could, if continued, have a
         material adverse effect on the condition (financial or otherwise),
         prospects, earnings, business or properties of the Company and its
         subsidiaries taken as a whole.

                  (r) PricewaterhouseCoopers LLP and Arthur Andersen LLP, who
         have certified certain financial statements of the Company and Snyder
         Oil Corporation and their respective consolidated subsidiaries and
         delivered their reports with respect to the audited consolidated
         financial statements and schedules included in the Final Prospectus,
         are independent public accountants with respect to the Company and
         Snyder Oil Corporation, within the meaning of the Act and the
         applicable published rules and regulations thereunder.

                  (s) There are no stamp or other issuance or transfer taxes or
         duties or other similar fees or charges required to be paid in
         connection with the execution and delivery of this Agreement or the
         issuance or sale by the Company of the Securities.

                  (t) The Company has filed all foreign, federal, state and
         local tax returns that are required to be filed or has requested
         extensions thereof (except in any case in which the failure so to file
         would not have a material adverse effect on the condition (financial or



                                       5
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         otherwise), prospects, earnings, business or properties of the Company
         and its subsidiaries, taken as a whole, whether or not arising from
         transactions in the ordinary course of business, except as set forth in
         or contemplated in the Final Prospectus (exclusive of any amendment or
         supplement thereto) and has paid all taxes required to be paid by it
         and any other assessment, fine or penalty levied against it, to the
         extent that any of the foregoing is due and payable, except for any
         such assessment, fine or penalty that is currently being contested in
         good faith or as would not have a material adverse effect on the
         condition (financial or otherwise), prospects, earnings, business or
         properties of the Company and its subsidiaries, taken as a whole,
         whether or not arising from transactions in the ordinary course of
         business, except as set forth in or contemplated in the Final
         Prospectus (exclusive of any amendment or supplement thereto).

                  (u) No labor problem or dispute with the employees of the
         Company or any of its subsidiaries exists or is threatened or imminent.

                  (v) No subsidiary of the Company is currently prohibited,
         directly or indirectly, from paying any dividends to the Company, from
         making any other distribution on such subsidiary's capital stock, from
         repaying to the Company any loans or advances to such subsidiary from
         the Company or from transferring any of such subsidiary's property or
         assets to the Company or any other subsidiary of the Company, except as
         described in or contemplated by the Final Prospectus or as arise under
         applicable law.

                  (w) The Company and its subsidiaries possess all licenses,
         certificates, permits and other authorizations issued by the
         appropriate federal, state or foreign regulatory authorities necessary
         to conduct their respective businesses, and neither the Company nor any
         such subsidiary has received any notice of proceedings relating to the
         revocation or modification of any such certificate, authorization or
         permit which, singly or in the aggregate, if the subject of an
         unfavorable decision, ruling or finding, would have a material adverse
         effect on the condition (financial or otherwise), prospects, earnings,
         business or properties of the Company and its subsidiaries, taken as a
         whole, whether or not arising from transactions in the ordinary course
         of business, except as set forth in or contemplated in the Final
         Prospectus (exclusive of any amendment or supplement thereto).

                  (x) Except as set forth in the Final Prospectus, the Company
         and its subsidiaries are (i) in compliance with any and all applicable
         foreign, federal, state and local laws and regulations relating to the
         protection of human health and safety, the environment or hazardous or
         toxic substances or wastes, pollutants or contaminants ("Environmental
         Laws"); (ii) have received and are in compliance with all permits,
         licenses or other approvals required of them under applicable
         Environmental Laws to conduct their respective businesses; and (iii)
         have not received notice of any actual or potential liability for the
         investigation or remediation of any disposal or release of hazardous or
         toxic substances or wastes, pollutants or contaminants, except where
         such non-compliance with Environmental Laws, failure to receive
         required permits, licenses or other approvals, or liability would not,
         individually or in the aggregate, have a material adverse change in the
         condition (financial or otherwise), prospects, earnings, business or
         properties of the Company and its subsidiaries, taken as a whole,
         whether or not arising from transactions



                                       6
<PAGE>   7

         in the ordinary course of business, except as set forth in or
         contemplated in the Final Prospectus (exclusive of any amendment or
         supplement thereto); except as set forth in the Final Prospectus,
         neither the Company nor any of the subsidiaries has been named as a
         "potentially responsible party" under the Comprehensive Environmental
         Response, Compensation, and Liability Act of 1980, as amended.


         Any certificate signed by any officer of the Company and delivered to
the Representatives or counsel for the Underwriters in connection with the
offering of the Securities shall be deemed a representation and warranty by the
Company, as to matters covered thereby, to each Underwriter.

                  2. Purchase and Sale. Subject to the terms and conditions and
in reliance upon the representations and warranties herein set forth, the
Company agrees to sell to each Underwriter, and each Underwriter agrees,
severally and not jointly, to purchase from the Company, at the purchase price
set forth in Schedule I hereto the principal amount of the Securities set forth
opposite such Underwriter's name in Schedule II hereto.

                  3. Delivery and Payment. Delivery of and payment for the
Securities shall be made on the date and at the time specified in Schedule I
hereto or at such time on such later date not more than three Business Days
after the foregoing date as the Representatives shall designate, which date and
time may be postponed by agreement between the Representatives and the Company
or as provided in Section 9 hereof (such date and time of delivery and payment
for the Securities being herein called the "Closing Date"). Delivery of the
Securities shall be made to the Representatives for the respective accounts of
the several Underwriters against payment by the several Underwriters through the
Representatives of the purchase price thereof to or upon the order of the
Company by wire transfer payable in same-day funds to an account specified by
the Company. Delivery of the Securities shall be made through the facilities of
The Depository Trust Company unless the Representatives shall otherwise
instruct.

                  4. Offering by Underwriters. It is understood that the several
Underwriters propose to offer the Securities for sale to the public as set forth
in the Final Prospectus.

                  5. Agreements. The Company agrees with the several
Underwriters that:

                  (a) The Company will use its best efforts to cause the
         Registration Statement, if not effective at the Execution Time, and any
         amendment thereof, to become effective. Prior to the termination of the
         offering of the Securities, the Company will not file any amendment of
         the Registration Statement or supplement (including the Final
         Prospectus or any Preliminary Final Prospectus) to the Basic Prospectus
         or any Rule 462(b) Registration Statement unless the Company has
         furnished you a copy for your review prior to filing and will not file
         any such proposed amendment or supplement to which you reasonably
         object. Subject to the foregoing sentence, if the Registration
         Statement has become or becomes effective pursuant to Rule 430A, or
         filing of the Final Prospectus is otherwise required under Rule 424(b),
         the Company will cause the Final Prospectus, properly completed, and
         any supplement thereto to be filed with the Commission pursuant to the
         applicable paragraph of Rule 424(b) within the time period prescribed
         and



                                       7
<PAGE>   8

         will provide evidence satisfactory to the Representatives of such
         timely filing. The Company will promptly advise the Representatives (1)
         when the Registration Statement, if not effective at the Execution
         Time, shall have become effective, (2) when the Final Prospectus, and
         any supplement thereto, shall have been filed (if required) with the
         Commission pursuant to Rule 424(b) or when any Rule 462(b) Registration
         Statement shall have been filed with the Commission, (3) when, prior to
         termination of the offering of the Securities, any amendment to the
         Registration Statement shall have been filed or become effective, (4)
         of any request by the Commission or its staff for any amendment of the
         Registration Statement, or any Rule 462(b) Registration Statement, or
         for any supplement to the Final Prospectus or for any additional
         information, (5) of the issuance by the Commission of any stop order
         suspending the effectiveness of the Registration Statement or the
         institution or threatening of any proceeding for that purpose and (6)
         of the receipt by the Company of any notification with respect to the
         suspension of the qualification of the Securities for sale in any
         jurisdiction or the institution or threatening of any proceeding for
         such purpose. The Company will use its best efforts to prevent the
         issuance of any such stop order or the suspension of any such
         qualification and, if issued, to obtain as soon as possible the
         withdrawal thereof.

                  (b) If, at any time when a prospectus relating to the
         Securities is required to be delivered under the Act, any event occurs
         as a result of which the Final Prospectus as then supplemented would
         include any untrue statement of a material fact or omit to state any
         material fact necessary to make the statements therein in the light of
         the circumstances under which they were made not misleading, or if it
         shall be necessary to amend the Registration Statement or supplement
         the Final Prospectus to comply with the Act or the Exchange Act or the
         respective rules thereunder, the Company promptly will (1) notify the
         Representatives of such event, (2) prepare and file with the
         Commission, subject to the second sentence of paragraph (a) of this
         Section 5, an amendment or supplement which will correct such statement
         or omission or effect such compliance and (3) supply any supplemented
         Final Prospectus to you in such quantities as you may reasonably
         request.

                  (c) As soon as practicable, the Company will make generally
         available to its security holders and to the Representatives an
         earnings statement or statements of the Company and its subsidiaries
         which will satisfy the provisions of Section 11(a) of the Act and Rule
         158 under the Act.

                  (d) The Company will furnish to the Representatives and
         counsel for the Underwriters, without charge, signed copies of the
         Registration Statement (including exhibits thereto) and to each other
         Underwriter a copy of the Registration Statement (without exhibits
         thereto) and, so long as delivery of a prospectus by an Underwriter or
         dealer may be required by the Act, as many copies of each Preliminary
         Final Prospectus and the Final Prospectus and any supplement thereto as
         the Representatives may reasonably request. The Company will pay the
         expenses of printing or other production of all documents relating to
         the offering.

                  (e) The Company will arrange, if necessary, for the
         qualification of the Securities for sale under the laws of such
         jurisdictions as the Representatives may designate, will



                                       8
<PAGE>   9

         maintain such qualifications in effect so long as required for the
         distribution of the Securities and will pay any fee of the National
         Association of Securities Dealers, Inc., in connection with its review
         of the offering; provided that in no event shall the Company be
         obligated to qualify to do business in any jurisdiction where it is not
         now so qualified or to take any action that would subject it to service
         of process in suits, other than those arising out of the offering or
         sale of the Securities, in any jurisdiction where it is not now so
         subject.

                  (f) The Company will not, without the prior written consent of
         Salomon Smith Barney Inc., offer, sell, contract to sell, pledge, or
         otherwise dispose of, (or enter into any transaction which is designed
         to, or might reasonably be expected to, result in the disposition
         (whether by actual disposition or effective economic disposition due to
         cash settlement or otherwise) by the Company or any affiliate of the
         Company or any person in privity with the Company or any affiliate of
         the Company) directly or indirectly, including the filing (or
         participation in the filing) of a registration statement with the
         Commission in respect of, or establish or increase a put equivalent
         position or liquidate or decrease a call equivalent position within the
         meaning of Section 16 of the Exchange Act, any debt securities issued
         or guaranteed by the Company (other than the Securities) or publicly
         announce an intention to effect any such transaction, until the
         Business Day set forth on Schedule I hereto. For purposes of the
         foregoing, "affiliate" shall have the meaning assigned to such term
         under the Exchange Act.

                  (g) The Company will not take, directly or indirectly, any
         action designed to or which has constituted or which might reasonably
         be expected to cause or result, under the Exchange Act or otherwise, in
         stabilization or manipulation of the price of any security of the
         Company to facilitate the sale or resale of the Securities.

                  6. Conditions to the Obligations of the Underwriters. The
obligations of the Underwriters to purchase the Securities shall be subject to
the accuracy of the representations and warranties on the part of the Company
contained herein as of the Execution Time and the Closing Date, to the accuracy
of the statements of the Company made in any certificates pursuant to the
provisions hereof, to the performance by the Company of its obligations
hereunder and to the following additional conditions:

                  (a) If the Registration Statement has not become effective
         prior to the Execution Time, unless the Representatives agree in
         writing to a later time, the Registration Statement will become
         effective not later than (i) 6:00 PM New York City time, on the date of
         determination of the public offering price, if such determination
         occurred at or prior to 3:00 PM New York City time on such date or (ii)
         9:30 AM on the Business Day following the day on which the public
         offering price was determined, if such determination occurred after
         3:00 PM New York City time on such date; if filing of the Final
         Prospectus, or any supplement thereto, is required pursuant to Rule
         424(b), the Final Prospectus, and any such supplement, will be filed in
         the manner and within the time period required by Rule 424(b); and no
         stop order suspending the effectiveness of the Registration Statement
         shall have been issued and no proceedings for that purpose shall have
         been instituted or threatened.




                                       9
<PAGE>   10

                  (b) The Company shall have requested and caused David L.
         Hicks, Vice President - Law and General Counsel for the Company, and
         Andrews & Kurth L.L.P., outside counsel for the Company, to have
         furnished to the Representatives their opinions, dated the Closing Date
         and addressed to the Representatives, to the effect that:

                           (i) each of the Company and Santa Fe Energy Resources
                  (Delaware) Ltd., a Delaware limited partnership, Mexican Flats
                  Services Company, a Delaware corporation, Snyder Fluid
                  Technologies, Inc., a Delaware corporation, Snyder Gas
                  Marketing, Inc., a Delaware corporation, SOCO Gas Systems,
                  Inc., a Delaware corporation, SOCO Louisiana Leasing, Inc., a
                  Delaware corporation, and Wyoming Gathering and Production
                  Company, a Delaware corporation (individually a "Subsidiary"
                  and collectively the "Subsidiaries") has been duly
                  incorporated and is validly existing as a corporation in good
                  standing under the laws of the jurisdiction in which it is
                  chartered or organized, with full corporate power and
                  authority to own or lease, as the case may be, and to operate
                  its properties and conduct its business as described in the
                  Final Prospectus, and is duly qualified to do business as a
                  foreign corporation and is in good standing under the laws of
                  each jurisdiction which requires such qualification;

                           (ii) all the outstanding shares of capital stock of
                  each Subsidiary have been duly and validly authorized and
                  issued and are fully paid and nonassessable, and, except as
                  otherwise set forth in the Final Prospectus, all outstanding
                  shares of capital stock of the Subsidiaries are owned by the
                  Company either directly or through wholly owned subsidiaries
                  free and clear of any perfected security interest and, to the
                  knowledge of such counsel, after due inquiry, any other
                  security interest, claim, lien or encumbrance;

                           (iii) the Company has an authorized capitalization as
                  described in the Final Prospectus, as amended or supplemented.
                  Upon issuance, the Securities will conform in all material
                  respects to the description thereof set forth under the
                  captions "Description of Notes" and "Description of Debt
                  Securities" in the Final Prospectus, as amended or
                  supplemented;

                           (iv) the Indenture has been duly authorized, executed
                  and delivered, has been duly qualified under the Trust
                  Indenture Act, and constitutes a legal, valid and binding
                  instrument enforceable against the Company in accordance with
                  its terms (subject, as to enforcement of remedies, to
                  applicable bankruptcy, reorganization, insolvency, moratorium
                  or other laws affecting creditors' rights generally from time
                  to time in effect and to general principles of equity,
                  including, without limitation, concepts of materiality,
                  reasonableness, good faith and fair dealing, regardless of
                  whether considered in a proceeding in equity or at law); and
                  the Securities have been duly authorized and, when executed
                  and authenticated in accordance with the provisions of the
                  Indenture and delivered to and paid for by the Underwriters
                  pursuant to this Agreement, will constitute legal, valid and
                  binding obligations of the Company entitled to the benefits of
                  the Indenture;

                           (v) to the knowledge of such counsel, there is no
                  pending or threatened



                                       10
<PAGE>   11

                  action, suit or proceeding by or before any court or
                  governmental agency, authority or body or any arbitrator
                  involving the Company or any of its subsidiaries or its or
                  their property, of a character required to be disclosed in the
                  Registration Statement which is not adequately disclosed in
                  the Final Prospectus, and there is no franchise, contract or
                  other document of a character required to be described in the
                  Registration Statement or Final Prospectus, or to be filed as
                  an exhibit thereto, which is not described or filed as
                  required; and the statements included or incorporated by
                  reference in the Final Prospectus under the captions "Certain
                  United States Federal Tax Consequences for Non-United States
                  Holders" and "Description of Notes" fairly summarize the
                  matters therein described.

                           (vi) the Registration Statement has become effective
                  under the Act; any required filing of the Basic Prospectus,
                  any Preliminary Final Prospectus and the Final Prospectus, and
                  any supplements thereto, pursuant to Rule 424(b) has been made
                  in the manner and within the time period required by Rule
                  424(b); to the knowledge of such counsel, no stop order
                  suspending the effectiveness of the Registration Statement has
                  been issued, no proceedings for that purpose have been
                  instituted or threatened, and the Registration Statement and
                  the Final Prospectus (other than the financial statements and
                  other financial information contained therein, as to which
                  such counsel need express no opinion) comply as to form in all
                  material respects with the applicable requirements of the Act,
                  the Exchange Act and the Trust Indenture Act and the
                  respective rules thereunder; and on the Effective Date or at
                  the Execution Time of the Registration Statement (A) each
                  document, if any, filed pursuant to the Exchange Act and
                  incorporated by reference in the Final Prospectus appeared on
                  its face to be appropriately responsive in all material
                  respects to the requirements of the Exchange Act and (B) the
                  Registration Statement and Final Prospectus appeared on their
                  face to be appropriately responsive in all material respects
                  to the requirements of the Exchange Act (in each case other
                  than financial statements and schedules and other financial or
                  statistical data and estimates of reserves or other
                  information included or incorporated by reference therein or
                  omitted therefrom as to which such counsel need not express
                  any opinion);

                           (vii) this Agreement has been duly authorized,
                  executed and delivered by the Company;

                           (viii) the Company is not and, after giving effect to
                  the offering and sale of the Securities and the application of
                  the proceeds thereof as described in the Final Prospectus,
                  will not be an "investment company" as defined in the
                  Investment Company Act of 1940, as amended;



                                       11
<PAGE>   12

                           (ix) no consent, approval, authorization, filing with
                  or order of any court or governmental agency or body is
                  required in connection with the transactions contemplated
                  herein, except such as have been obtained under the Act and
                  such as may be required under the blue sky laws of any
                  jurisdiction in connection with the purchase and distribution
                  of the Securities by the Underwriters in the manner
                  contemplated in this Agreement and in the Final Prospectus and
                  such other approvals (specified in such opinion) as have been
                  obtained;

                           (x) neither the execution and delivery of the
                  Indenture, the issue and sale of the Securities, nor the
                  consummation of any other of the transactions herein
                  contemplated nor the fulfillment of the terms hereof will
                  conflict with, result in a breach or violation of or
                  imposition of any lien, charge or encumbrance upon any
                  property or assets of the Company or its subsidiaries pursuant
                  to, (i) the charter or by-laws of the Company or any of its
                  subsidiaries listed in Exhibit A hereto, (ii) the terms of
                  any indenture, or any material contract, lease, mortgage, deed
                  of trust, note agreement, loan agreement or other agreement,
                  obligation, condition, covenant or instrument to which the
                  Company or its subsidiaries is a party or bound or to which
                  its or their property is subject, or (iii) any statute, law,
                  rule, regulation, judgment, order or decree applicable to the
                  Company or its subsidiaries of any court, regulatory body,
                  administrative agency, governmental body, arbitrator or other
                  authority having jurisdiction over the Company or its
                  subsidiaries or any of its or their properties; and

                           (xi) no holders of securities of the Company have
                  rights to the registration of such securities under the
                  Registration Statement.

                  In addition, such counsel's opinion shall state that in the
         course of the preparation by the Company of the Registration Statement
         and the Preliminary Final Prospectus and the Final Prospectus
         (including the documents incorporated by reference therein), such
         counsel has participated in conferences with certain of the officers
         and representatives of the Company, the Company's independent
         accountants, the Underwriters and counsel for the Underwriters at which
         the Registration Statement, the Preliminary Final Prospectus and Final
         Prospectus were discussed. Such counsel' opinion shall further state
         that between the date of effectiveness of the Registration Statement
         and the date hereof, such counsel participated in additional
         conferences with certain officers and representatives of the Company,
         the Company's independent accountants, the Underwriters and counsel for
         the Underwriters at which portions of the Registration Statement, the
         Preliminary Final Prospectus and the Final Prospectus were discussed.
         Further, such counsel is not passing upon and does not assume any
         responsibility for the accuracy, completeness or fairness of the
         statements contained in the Registration Statement, the Preliminary
         Final Prospectus or the Final Prospectus and has not made any
         independent check or verification thereof, except as specifically
         described in the opinion in paragraphs (v) and (vi) above. Subject to
         the foregoing, no facts have come to such counsel's attention that have
         caused such counsel to believe that the Registration Statement, at the
         time it became effective, contained any untrue statement of a material
         fact or omitted to state a material fact required to be stated therein
         or necessary in order to make the statements therein not



                                       12
<PAGE>   13

         misleading, or that the Final Prospectus, as of its date, contained any
         untrue statement of a material fact or omitted to state a material fact
         necessary in order to make the statements therein, in light of the
         circumstances under which they were made, not misleading. Also, subject
         to the foregoing, no facts have come to such counsel's attention in the
         course of the proceedings described in the first and second sentences
         of this paragraph that caused such counsel to believe that the Final
         Prospectus as of the date hereof contains any untrue statement of a
         material fact or omits to state a material fact necessary in order to
         make the statements therein, in light of the circumstances under which
         they were made, not misleading. Such counsel will not express any
         belief, however, with respect to financial statements, schedules or
         notes thereto or other financial or statistical data or reserve reports
         included or incorporated by reference in or omitted from the
         Registration Statement or Final Prospectus, or the Form T-1 of the
         Trustee.



                  In rendering such opinion, such counsel may rely (A) as to
         matters involving the application of laws of any jurisdiction other
         than the State of Delaware or the Federal laws of the United States, to
         the extent they deem proper and specified in such opinion, upon the
         opinion of other counsel of good standing whom they believe to be
         reliable and who are satisfactory to counsel for the Underwriters and
         (B) as to matters of fact, to the extent they deem proper, on
         certificates of responsible officers of the Company and public
         officials. References to the Final Prospectus in this paragraph (b)
         include any supplements thereto at the Closing Date.

                  (c) The Representatives shall have received from Vinson &
         Elkins L.L.P., counsel for the Underwriters, such opinion or opinions,
         dated the Closing Date and addressed to the Representatives, with
         respect to the issuance and sale of the Securities, the Indenture, the
         Registration Statement, the Final Prospectus (together with any
         supplement thereto) and other related matters as the Representatives
         may reasonably require, and the Company shall have furnished to such
         counsel such documents as they request for the purpose of enabling them
         to pass upon such matters.

                  (d) The Company shall have furnished to the Representatives a
         certificate of the Company, signed by the Chairman of the Board or the
         Chief Executive Officer and the principal financial or accounting
         officer of the Company, dated the Closing Date, to the effect that the
         signers of such certificate have carefully examined the Registration
         Statement, the Final Prospectus, any supplements to the Final
         Prospectus and this Agreement and that:

                           (i) the representations and warranties of the Company
                  in this Agreement are true and correct in all material
                  respects on and as of the Closing Date with the same effect as
                  if made on the Closing Date and the Company has complied with
                  all the agreements and satisfied all the conditions on its
                  part to be performed or satisfied at or prior to the Closing
                  Date;

                           (ii) no stop order suspending the effectiveness of
                  the Registration Statement has been issued and no proceedings
                  for that purpose have been



                                       13
<PAGE>   14

                  instituted or, to the Company's knowledge, threatened; and

                           (iii) since the date of the most recent financial
                  statements included or incorporated by reference in the Final
                  Prospectus (exclusive of any supplement thereto), there has
                  been no material adverse effect on the condition (financial or
                  otherwise), prospects, earnings, business or properties of the
                  Company and its subsidiaries, taken as a whole, whether or not
                  arising from transactions in the ordinary course of business,
                  except as set forth in or contemplated in the Final Prospectus
                  (exclusive of any supplement thereto).

                  (e) At the Execution Time and the Closing Date, each firm of
         accountants who have certified the financial statements of the Company
         and its Subsidiaries and other relevant entities, including, without
         limitation, Snyder Oil Corporation and Santa Fe Energy Resources, Inc.,
         included or incorporated by reference in the Registration Statement or
         Final Prospectus, shall have furnished to the Representatives a letter
         or letters, to the effect set forth in Annex I hereto, and including
         such other matters as the Representatives may reasonably request, in
         form and substance satisfactory to the Representatives.

                  (f) Subsequent to the Execution Time or, if earlier, the dates
         as of which information is given in the Registration Statement
         (exclusive of any amendment thereof) and the Final Prospectus
         (exclusive of any supplement thereto), there shall not have been (i)
         any change or decrease specified in the letter or letters referred to
         in paragraph (e) of this Section 6 or (ii) any change, or any
         development involving a prospective change, in or affecting the
         condition (financial or otherwise), earnings, business or properties of
         the Company and its subsidiaries, taken as a whole, whether or not
         arising from transactions in the ordinary course of business, except as
         set forth in or contemplated in the Final Prospectus (exclusive of any
         supplement thereto) the effect of which, in any case referred to in
         clause (i) or (ii) above, is, in the sole judgment of the
         Representatives, so material and adverse as to make it impractical or
         inadvisable to proceed with the offering or delivery of the Securities
         as contemplated by the Registration Statement (exclusive of any
         amendment thereof) and the Final Prospectus (exclusive of any
         supplement thereto).

                  (g) Subsequent to the Execution Time, there shall not have
         been any decrease in the rating of any of the Company's debt securities
         by any "nationally recognized statistical rating organization" (as
         defined for purposes of Rule 436(g) under the Act) or any notice given
         of any intended or potential decrease in any such rating or of a
         possible change in any such rating that does not indicate the direction
         of the possible change.

                  (h) Prior to the Closing Date, the Company shall have
         furnished to the Representatives such documents as the Representatives
         may reasonably request for the purpose of enabling them to pass upon
         the issuance and sale of the Securities as herein contemplated, or in
         order to evidence the accuracy of any of the representations or
         warranties, or the fulfillment of any of the conditions, herein
         contemplated.

                  If any of the conditions specified in this Section 6 shall not
have been fulfilled in all material respects when and as provided in this
Agreement, or if any of the opinions and



                                       14
<PAGE>   15

certificates mentioned above or elsewhere in this Agreement shall not be in all
material respects reasonably satisfactory in form and substance to the
Representatives and counsel for the Underwriters, this Agreement and all
obligations of the Underwriters hereunder may be canceled at, or at any time
prior to, the Closing Date by the Representatives. Notice of such cancelation
shall be given to the Company in writing or by telephone or facsimile confirmed
in writing.

                  The documents required to be delivered by this Section 6 shall
be delivered on the Closing Date at a place and time agreed upon by the Company
and the Underwriters.

                  7. Reimbursement of Underwriters' Expenses. If the sale of the
Securities provided for herein is not consummated because any condition to the
obligations of the Underwriters set forth in Section 6 hereof is not satisfied,
because of any termination pursuant to Section 10(i) hereof or because of any
refusal, inability or failure on the part of the Company to perform any
agreement herein or comply with any provision hereof other than by reason of a
default by any of the Underwriters, the Company will reimburse the Underwriters
severally through Salomon Smith Barney on demand for all out-of-pocket expenses
(including reasonable fees and disbursements of counsel) that shall have been
incurred by them in connection with the proposed purchase and sale of the
Securities.

                  8. Indemnification and Contribution. (a) The Company agrees to
indemnify and hold harmless each Underwriter, the directors, officers, employees
and agents of each Underwriter and each person who controls any Underwriter
within the meaning of either the Act or the Exchange Act against any and all
losses, claims, damages or liabilities, joint or several, to which they or any
of them may become subject under the Act, the Exchange Act or other Federal or
state statutory law or regulation, at common law or otherwise, insofar as such
losses, claims, damages or liabilities (or actions in respect thereof) arise out
of or are based upon any untrue statement or alleged untrue statement of a
material fact contained in the registration statement for the registration of
the Securities as originally filed or in any amendment thereof, or in the Basic
Prospectus, any Preliminary Final Prospectus or the Final Prospectus, or in any
amendment thereof or supplement thereto, or arise out of or are based upon the
omission or alleged omission to state therein a material fact required to be
stated therein or necessary to make the statements therein not misleading, and
agrees to reimburse each such indemnified party, as incurred, for any legal or
other expenses reasonably incurred by them in connection with investigating or
defending any such loss, claim, damage, liability or action; provided, however,
that the Company will not be liable in any such case to the extent that any such
loss, claim, damage or liability arises out of or is based upon any such untrue
statement or alleged untrue statement or omission or alleged omission made
therein in reliance upon and in conformity with written information furnished to
the Company by or on behalf of any Underwriter through the Representatives
specifically for inclusion therein, provided further, however, that the
foregoing indemnity agreement with respect to any Preliminary Final Prospectus
shall not inure to the benefit of any Underwriter who failed to deliver a Final
Prospectus (as then amended or supplemented, provided by the Company to the
Underwriters in the requisite quantity and on a timely basis to permit proper
delivery on or prior to the Closing Date) to the person asserting any losses,
claims, damages and liabilities and judgments caused by any untrue statement or
alleged untrue statement of a material fact contained in any Preliminary Final
Prospectus or caused by any omission or alleged omission to state therein a
material fact required to be stated therein or



                                       15
<PAGE>   16

necessary to make the statements therein not misleading, if such material
misstatement or omission or alleged material misstatement or omission was cured
in such Final Prospectus and such Final Prospectus was required by law to be
delivered at or prior to the written confirmation of sale to such person. This
indemnity agreement will be in addition to any liability which the Company may
otherwise have.

                  (b) Each Underwriter severally and not jointly agrees to
indemnify and hold harmless the Company, each of its directors, each of its
officers who signs the Registration Statement, and each person who controls the
Company within the meaning of either the Act or the Exchange Act, to the same
extent as the foregoing indemnity from the Company to each Underwriter, but only
with reference to written information relating to such Underwriter furnished to
the Company by or on behalf of such Underwriter through the Representatives
specifically for inclusion in the documents referred to in the foregoing
indemnity. This indemnity agreement will be in addition to any liability which
any Underwriter may otherwise have. The Company acknowledges that the statements
set forth in the last paragraph of the cover page, the paragraphs addressing
stabilization, syndicate transactions penalty bids and the performance of
financial advisory services by the underwriters under the caption
"Underwriting", the sentences related to concessions and reallowances, and the
list of Underwriters and their respective participation in the sale of the
Securities in any Final Prospectus or Preliminary Final Prospectus constitute
the only information furnished in writing by or on behalf of the several
Underwriters for inclusion in any Preliminary Final Prospectus or the Final
Prospectus.

                  (c) Promptly after receipt by an indemnified party under this
Section 8 of notice of the commencement of any action, such indemnified party
will, if a claim in respect thereof is to be made against the indemnifying party
under this Section 8, notify the indemnifying party in writing of the
commencement thereof; but the failure so to notify the indemnifying party (i)
will not relieve it from liability under paragraph (a) or (b) above unless and
to the extent it did not otherwise learn of such action and such failure results
in the forfeiture by the indemnifying party of substantial rights and defenses
and (ii) will not, in any event, relieve the indemnifying party from any
obligations to any indemnified party other than the indemnification obligation
provided in paragraph (a) or (b) above. The indemnifying party shall be entitled
to appoint counsel of the indemnifying party's choice at the indemnifying
party's expense to represent the indemnified party in any action for which
indemnification is sought (in which case the indemnifying party shall not
thereafter be responsible for the fees and expenses of any separate counsel
retained by the indemnified party or parties except as set forth below);
provided, however, that such counsel shall be satisfactory to the indemnified
party. Notwithstanding the indemnifying party's election to appoint counsel to
represent the indemnified party in an action, the indemnified party shall have
the right to employ separate counsel (including local counsel), and the
indemnifying party shall bear the reasonable fees, costs and expenses of such
separate counsel if (i) the use of counsel chosen by the indemnifying party to
represent the indemnified party would present such counsel with a conflict of
interest, (ii) the actual or potential defendants in, or targets of, any such
action include both the indemnified party and the indemnifying party and the
indemnified party shall have reasonably concluded that there may be legal
defenses available to it and/or other indemnified parties which are different
from or additional to those available to the indemnifying party, (iii) the
indemnifying party shall not have employed counsel satisfactory to the
indemnified party to represent the indemnified party within a reasonable time
after notice of the



                                       16
<PAGE>   17

institution of such action or (iv) the indemnifying party shall authorize the
indemnified party to employ separate counsel at the expense of the indemnifying
party. An indemnifying party will not, without the prior written consent of the
indemnified parties, settle or compromise or consent to the entry of any
judgment with respect to any pending or threatened claim, action, suit or
proceeding in respect of which indemnification or contribution may be sought
hereunder (whether or not the indemnified parties are actual or potential
parties to such claim or action) unless such settlement, compromise or consent
includes an unconditional release of each indemnified party from all liability
arising out of such claim, action, suit or proceeding.

                  (d) In the event that the indemnity provided in paragraph (a)
or (b) of this Section 8 is unavailable to or insufficient to hold harmless an
indemnified party for any reason, the Company and the Underwriters severally
agree to contribute to the aggregate losses, claims, damages and liabilities
(including legal or other expenses reasonably incurred in connection with
investigating or defending same) (collectively "Losses") to which the Company
and one or more of the Underwriters may be subject in such proportion as is
appropriate to reflect the relative benefits received by the Company on the one
hand and by the Underwriters on the other from the offering of the Securities;
provided, however, that in no case shall any Underwriter (except as may be
provided in any agreement among underwriters relating to the offering of the
Securities) be responsible for any amount in excess of the underwriting discount
or commission applicable to the Securities purchased by such Underwriter
hereunder. If the allocation provided by the immediately preceding sentence is
unavailable for any reason, the Company and the Underwriters severally shall
contribute in such proportion as is appropriate to reflect not only such
relative benefits but also the relative fault of the Company on the one hand and
of the Underwriters on the other in connection with the statements or omissions
which resulted in such Losses as well as any other relevant equitable
considerations. Benefits received by the Company shall be deemed to be equal to
the total net proceeds from the offering (before deducting expenses) received by
it, and benefits received by the Underwriters shall be deemed to be equal to the
total underwriting discounts and commissions, in each case as set forth on the
cover page of the Final Prospectus. Relative fault shall be determined by
reference to, among other things, whether any untrue or any alleged untrue
statement of a material fact or the omission or alleged omission to state a
material fact relates to information provided by the Company on the one hand or
the Underwriters on the other, the intent of the parties and their relative
knowledge, access to information and opportunity to correct or prevent such
untrue statement or omission. The Company and the Underwriters agree that it
would not be just and equitable if contribution were determined by pro rata
allocation or any other method of allocation which does not take account of the
equitable considerations referred to above. Notwithstanding the provisions of
this paragraph (d), no person guilty of fraudulent misrepresentation (within the
meaning of Section 11(f) of the Act) shall be entitled to contribution from any
person who was not guilty of such fraudulent misrepresentation. For purposes of
this Section 8, each person who controls an Underwriter within the meaning of
either the Act or the Exchange Act and each director, officer, employee and
agent of an Underwriter shall have the same rights to contribution as such
Underwriter, and each person who controls the Company within the meaning of
either the Act or the Exchange Act, each officer of the Company who shall have
signed the Registration Statement and each director of the Company shall have
the same rights to contribution as the Company, subject in each case to the
applicable terms and conditions of this paragraph (d).



                                       17
<PAGE>   18

                  9. Default by an Underwriter. If any one or more Underwriters
shall fail to purchase and pay for any of the Securities agreed to be purchased
by such Underwriter or Underwriters hereunder and such failure to purchase shall
constitute a default in the performance of its or their obligations under this
Agreement, the remaining Underwriters shall be obligated severally to take up
and pay for (in the respective proportions which the principal amount of
Securities set forth opposite their names in Schedule II hereto bears to the
aggregate principal amount of Securities set forth opposite the names of all the
remaining Underwriters) the Securities which the defaulting Underwriter or
Underwriters agreed but failed to purchase; provided, however, that in the event
that the aggregate principal amount of Securities which the defaulting
Underwriter or Underwriters agreed but failed to purchase shall exceed 10% of
the aggregate principal amount of Securities set forth in Schedule II hereto,
the remaining Underwriters shall have the right to purchase all, but shall not
be under any obligation to purchase any, of the Securities, and if such
nondefaulting Underwriters do not purchase all the Securities, this Agreement
will terminate without liability to any nondefaulting Underwriter or the
Company. In the event of a default by any Underwriter as set forth in this
Section 9, the Closing Date shall be postponed for such period, not exceeding
five Business Days, as the Representatives shall determine in order that the
required changes in the Registration Statement and the Final Prospectus or in
any other documents or arrangements may be effected. Nothing contained in this
Agreement shall relieve any defaulting Underwriter of its liability, if any, to
the Company and any nondefaulting Underwriter for damages occasioned by its
default hereunder.

                  10. Termination. This Agreement shall be subject to
termination in the absolute discretion of the Representatives, by notice given
to the Company prior to delivery of and payment for the Securities, if at any
time prior to such time (i) trading in the Company's Common Stock shall have
been suspended by the Commission or the New York Stock Exchange, (ii) trading in
securities generally on the New York Stock Exchange shall have been suspended or
limited or minimum prices shall have been established on such Exchange, (iii) a
banking moratorium shall have been declared either by Federal or New York State
authorities or (iv) there shall have occurred any outbreak or escalation of
hostilities, declaration by the United States of a national emergency or war, or
other calamity or crisis the effect of which on financial markets is such as to
make it, in the sole judgment of the Representatives, impractical or inadvisable
to proceed with the offering or delivery of the Securities as contemplated by
the Final Prospectus (exclusive of any supplement thereto).

                  11. Representations and Indemnities to Survive. The respective
agreements, representations, warranties, indemnities and other statements of the
Company or its officers and of the Underwriters set forth in or made pursuant to
this Agreement will remain in full force and effect, regardless of any
investigation made by or on behalf of any Underwriter or the Company or any of
the officers, directors, employees, agents or controlling persons referred to in
Section 8 hereof, and will survive delivery of and payment for the Securities.
The provisions of Sections 7 and 8 hereof shall survive the termination or
cancelation of this Agreement.

                  12. Notices. All communications hereunder will be in writing
and effective only on receipt, and, if sent to the Representatives, will be
mailed, delivered or telefaxed to the Salomon Smith Barney Inc. General Counsel
(fax no.: (212) 816-7912) and confirmed to the General Counsel, Salomon Smith
Barney Inc., at 388 Greenwich Street, New York, New York,




                                       18
<PAGE>   19

10013, Attention: General Counsel; or, if sent to the Company, will be mailed,
delivered or telefaxed to the attention of the Company's General Counsel at
(713) 507-5341 and confirmed to the General Counsel, 1616 South Voss Road,
Houston, Texas 77057, Attention: Vice President - Law and General Counsel.

                  13. Successors. This Agreement will inure to the benefit of
and be binding upon the parties hereto and their respective successors and the
officers, directors, employees, agents and controlling persons referred to in
Section 8 hereof, and no other person will have any right or obligation
hereunder.

                  14. Applicable Law. This Agreement will be governed by and
construed in accordance with the laws of the State of New York applicable to
contracts made and to be performed within the State of New York.

                  15. Counterparts. This Agreement may be signed in one or more
counterparts, each of which shall constitute an original and all of which
together shall constitute one and the same agreement.

                  16. Headings. The section headings used herein are for
convenience only and shall not affect the construction hereof.

                  17. Definitions. The terms which follow, when used in this
Agreement, shall have the meanings indicated.

                  "Act" shall mean the Securities Act of 1933, as amended and
         the rules and regulations of the Commission promulgated thereunder.

                  "Basic Prospectus" shall mean the prospectus referred to in
         paragraph 1(a) above contained in the Registration Statement at the
         Effective Date including any Preliminary Final Prospectus.

                  "Business Day" shall mean any day other than a Saturday, a
         Sunday or a legal holiday or a day on which banking institutions or
         trust companies are authorized or obligated by law to close in New York
         City.

                  "Commission" shall mean the Securities and Exchange
         Commission.

                  "Effective Date" shall mean each date and time that the
         Registration Statement, any post-effective amendment or amendments
         thereto and any Rule 462(b) Registration Statement became or become
         effective.

                  "Exchange Act" shall mean the Securities Exchange Act of 1934,
         as amended, and the rules and regulations of the Commission promulgated
         thereunder.

                  "Execution Time" shall mean the date and time that this
         Agreement is executed and delivered by the parties hereto.

                  "Final Prospectus" shall mean the prospectus supplement
         relating to the Securities



                                       19
<PAGE>   20

         that was first filed pursuant to Rule 424(b) after the Execution Time,
         together with the Basic Prospectus.

                  "Preliminary Final Prospectus" shall mean any preliminary
         prospectus supplement to the Basic Prospectus which describes the
         Securities and the offering thereof and is used prior to filing of the
         Final Prospectus, together with the Basic Prospectus.

                  "Registration Statement" shall mean the registration statement
         referred to in paragraph 1(a) above, including exhibits and financial
         statements, as amended at the Execution Time (or, if not effective at
         the Execution Time, in the form in which it shall become effective)
         and, in the event any post-effective amendment thereto or any Rule
         462(b) Registration Statement becomes effective prior to the Closing
         Date, shall also mean such registration statement as so amended or such
         Rule 462(b) Registration Statement, as the case may be. Such term shall
         include any Rule 430A Information deemed to be included therein at the
         Effective Date as provided by Rule 430A.

                  "Rule 415", "Rule 424", "Rule 430A" and "Rule 462" refer to
         such rules under the Act.

                  "Rule 430A Information" shall mean information with respect to
         the Securities and the offering thereof permitted to be omitted from
         the Registration Statement when it becomes effective pursuant to Rule
         430A.

                  "Rule 462(b) Registration Statement" shall mean a registration
         statement and any amendments thereto filed pursuant to Rule 462(b)
         relating to the offering covered by the registration statement referred
         to in Section 1(a) hereof.

                  "Trust Indenture Act" shall mean the Trust Indenture Act of
         1939, as amended and the rules and regulations of the Commission
         promulgated thereunder.




                                       20
<PAGE>   21






                  If the foregoing is in accordance with your understanding of
our agreement, please sign and return to us the enclosed duplicate hereof,
whereupon this letter and your acceptance shall represent a binding agreement
among the Company and the several Underwriters.


                                       Very truly yours,

                                       Santa Fe Snyder Corporation

                                       By:    /s/ Mark A. Jackson
                                       Name:  Mark A. Jackson
                                       Title: Executive Vice President and
                                              Chief Financial Officer



The foregoing Agreement is
hereby confirmed and accepted
as of the date specified in
Schedule I hereto.

Salomon Smith Barney Inc.

By:    /s/ Mario E. Rodriguez
Name:  Mario E. Rodriguez
Title: Vice President


For themselves and the other
several Underwriters, if any,
named in Schedule II to the
foregoing Agreement



                                       21
<PAGE>   22




                                     ANNEX I


                  Pursuant to Section 5(e) of the Underwriting Agreement, the
         Appropriate Accountants (as defined herein) shall have furnished to the
         Representatives a letter or letters, dated respectively as of the
         Execution Time and as of the Closing Date, in form and substance
         satisfactory to the Representatives, confirming that they are
         independent accountants within the meaning of the Act and the Exchange
         Act and the respective applicable rules and regulations adopted by the
         Commission thereunder and that they have audited the year-end financial
         information included or incorporated in the Registration Statement and
         the Final Prospectus and performed a review of the unaudited interim
         financial information included or incorporated in the Registration
         Statement and the Final Prospectus in accordance with Statement on
         Auditing Standards No. 71, and stating in effect that:

                           (i) in their opinion the audited financial statements
                  and financial statement schedules and pro forma financial
                  statements included or incorporated by reference in the
                  Registration Statement and the Final Prospectus (including
                  those incorporated therein by reference) and reported on by
                  them comply as to form in all material respects with the
                  applicable accounting requirements of the Act and the Exchange
                  Act and the related rules and regulations adopted by the
                  Commission;

                           (ii) on the basis of a reading of the latest
                  unaudited financial statements made available by the Relevant
                  Entity (as defined herein); their limited review in accordance
                  with standards established under Statement on Auditing
                  Standards No. 71 of the unaudited interim financial
                  information as included in the Registration Statement and
                  Final Prospectus (including those incorporated therein by
                  reference), carrying out certain specified procedures (but not
                  an examination in accordance with generally accepted auditing
                  standards) which would not necessarily reveal matters of
                  significance with respect to the comments set forth in such
                  letter, a reading of the minutes of the meetings of the
                  stockholders, directors and any committees of the Relevant
                  Entity the Representatives may reasonably request; and
                  inquiries of certain officials of the Relevant Entity who have
                  responsibility for financial and accounting matters of the
                  Relevant Entity as to transactions and events subsequent to
                  the date of the most recent financial statements included in
                  the Final Prospectus, nothing came to their attention which
                  caused them to believe that:

                                    (1) any unaudited financial statements
                           included or incorporated by reference in the
                           Registration Statement and the Final Prospectus do
                           not comply as to form in all material respects with
                           applicable accounting requirements of the Act and
                           with the related rules and regulations adopted by the
                           Commission with respect to financial statements
                           included or incorporated by reference in quarterly
                           reports on Form 10-Q under the Exchange Act; and said
                           unaudited financial statements are not in conformity
                           with generally accepted accounting principles applied
                           on a



                                       22
<PAGE>   23

                           basis substantially consistent with that of the
                           audited financial statements included or incorporated
                           by reference in the Registration Statement and the
                           Final Prospectus;

                                    (2) with respect to the period subsequent to
                           the date of the most recent financial statements
                           (other than capsule information), audited or
                           unaudited, included or incorporated by reference in
                           the Registration Statement and the Final Prospectus,
                           there were any changes, at a specified date not more
                           than five days prior to the date of the letter, in
                           the long-term debt or capital stock of the Relevant
                           Entity or decreases in the stockholders' equity of
                           the Relevant Entity or other balance sheet items the
                           Representatives may reasonably request as compared
                           with the amounts shown on the most recent financial
                           statements included or incorporated by reference in
                           the Registration Statement and the Final Prospectus
                           to such specified date, or there were any decreases,
                           as compared with the corresponding period in the
                           preceding year or the preceding quarter in net
                           revenues or income before income taxes or in total or
                           per share amounts of net income of the Relevant
                           Entity or any other income statement items as the
                           Representatives may reasonable request, except in all
                           instances for changes or decreases set forth in such
                           letter, in which case the letter shall be accompanied
                           by an explanation by the Company as to the
                           significance thereof unless said explanation is not
                           deemed necessary by the Representatives, or

                                     (3) the information included or
                           incorporated by reference in the Registration
                           Statement and Final Prospectus in response to
                           Regulation S-K, Item 301 (Selected Financial Data),
                           Item 302 (Supplementary Financial Information), Item
                           402 (Executive Compensation) and Item 503(d) (Ratio
                           of Earnings to Fixed Charges) is not in conformity
                           with the applicable disclosure requirements of
                           Regulation S-K; and

                           (iii) they have performed certain other specified
                  procedures as a result of which they determined that certain
                  information of an accounting, financial or statistical nature
                  (which is limited to accounting, financial or statistical
                  information derived from the general accounting records of the
                  Relevant Entity) set forth in the Registration Statement and
                  the Final Prospectus, including the information in Items 1, 2,
                  6, 7 and 11 of any Annual Report on Form 10-K, included or
                  incorporated by reference in the Registration Statement and
                  the Final Prospectus, and the information included in the
                  "Management's Discussion and Analysis of Financial Condition
                  and Results of Operations" included or incorporated by
                  reference in any Relevant Entity's Quarterly Reports on Form
                  10-Q, incorporated by reference in the Registration Statement
                  and the Final Prospectus, agrees with the accounting records
                  of the Relevant Entity, excluding any questions of legal
                  interpretation; and

                           (iv) on the basis of a reading of the unaudited pro
                  forma financial statements included or incorporated by
                  reference in the Registration Statement


                                       23
<PAGE>   24

                  and the Final Prospectus (the "pro forma financial
                  statements"); carrying out certain specified procedures;
                  inquiries of certain officials of the Relevant Entity who have
                  responsibility for financial and accounting matters; and
                  proving the arithmetic accuracy of the application of the pro
                  forma adjustments to the historical amounts in the pro forma
                  financial statements, nothing came to their attention which
                  caused them to believe that the pro forma financial statements
                  do not comply as to form in all material respects with the
                  applicable accounting requirements of Rule 11-02 of Regulation
                  S-X or that the pro forma adjustments have not been properly
                  applied to the historical amounts in the compilation of such
                  statements.


         References to the Final Prospectus in this Annex 1 include any
supplement thereto at the date of the letter.

         As used in Annex 1, "Appropriate Accountant" means the firm of
accountants who certified that the Relevant Entity's financial statements were
prepared in accordance with generally accepted accounting principles and
complied with the Act and the Exchange Act and the applicable published rules
and regulations thereunder.

         As used in Annex 1, "Relevant Entity" means any entity whose financial
statements are included or incorporated by reference in the Registration
Statement or the Final Prospectus which may include, without limitation, the
Company, Snyder Oil Corporation and Santa Fe Energy Resources, Inc., as the case
may be.




                                       24
<PAGE>   25







                                   SCHEDULE I


Underwriting Agreement dated June 10, 1999

Registration Statement No.:  333-78265

Representative(s):         Salomon Smith Barney Inc.

                           Donaldson, Lufkin & Jenrette Securities Corporation




Title, Purchase Price and Description of Securities:

         Title:  8.05% Senior Notes due June 15, 2004

         Principal amount:  $125,000,000

         Purchase price (include accrued
           interest or amortization, if
           any):  $121,572,5000

         Sinking fund provisions:  None

         Redemption provisions:             100% of principal amount, accrued
                                            and unpaid interest to the
                                            redemption date and a make-whole
                                            premium, if any.

         Other provisions:  None.

Closing Date, Time and Location:            June 15, 1999, 8:00 a.m., C.S.T., at
                                            the officers of Andrews & Kurth
                                            L.L.P., 600 Travis, Suite 4200,
                                            Houston, Texas 77002

Type of Offering:  Non-delayed

Date referred to in Section 5(f) after which the Company may offer or sell debt
securities issued or guaranteed by the Company without the consent of the
Representative(s): June 16, 1999

Modification of items to be covered by the letter from
  Appropriate Accountants delivered pursuant to
  Section 6(e) at the Execution Time:  None





                                       25
<PAGE>   26










                                   SCHEDULE II

<TABLE>
<CAPTION>

                                                                Principal Amount
                                                                of Securities to
Underwriters                                                      be Purchased
- ------------                                                    ----------------

<S>                                                             <C>
Salomon Smith Barney Inc. ....................                       $50,000,000

Donaldson, Lufkin & Jenrette Securities Corporation                   25,312,500

Bear, Stearns & Co. Inc.                                              10,937,500

Credit Suisse First Boston Corporation                                10,937,500

Goldman, Sachs & Co.                                                  10,937,500

ABN AMRO Incorporated                                                  5,625,000

Banc One Capital Markets, Inc.                                         5,625,000

Credit Lyonnais Securities (USA) Inc.                                 5,625,000

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

         Total .........................                            $125,000,000
                                                                    ============
</TABLE>
<PAGE>   27
                                                                       EXHIBIT A


                                  SUBSIDIARIES

Santa Fe Energy Resources (Delaware) Ltd., a Delaware limited partnership,
Mexican Flats Services Company, a Delaware corporation, Snyder Fluid
Technologies, Inc., a Delaware corporation, Snyder Gas Marketing, Inc., a
Delaware corporation, SOCO Gas Systems, Inc., a Delaware corporation,
SOCO Louisiana Leasing, Inc., a Delaware corporation, and Wyoming Gathering
and Production Company, a Delaware corporation.

<PAGE>   1
                                                                     EXHIBIT 4.1


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



                           SANTA FE SNYDER CORPORATION

                                       TO

                              THE BANK OF NEW YORK,

                                     TRUSTEE



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

                                    INDENTURE

                            DATED AS OF JUNE 1, 1999



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

                             SENIOR DEBT SECURITIES

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

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


<PAGE>   2


                           SANTA FE SNYDER CORPORATION

                         RECONCILIATION AND TIE BETWEEN
                 CERTAIN SECTIONS OF THIS INDENTURE RELATING TO
                   SECTIONS 310 THROUGH 318, INCLUSIVE, OF THE
                          TRUST INDENTURE ACT OF 1939:


<TABLE>
<CAPTION>
     Trust Indenture
       Act Section                                             Indenture Section
<S>                                                             <C>
Section 310(a)(1)............................................              6.9
         (a)(2)..............................................              6.9
         (a)(3)..............................................   Not Applicable
         (a)(4)..............................................   Not Applicable
         (b).................................................        6.8; 6.10
Section 311(a)...............................................             6.13
         (b).................................................             6.13
Section 312(a)...............................................         7.1; 7.2
         (b).................................................              7.2
         (c).................................................              7.2
Section 313(a)...............................................              7.3
         (b).................................................              7.3
         (c).................................................              7.3
         (d).................................................              7.3
Section 314(a)...............................................              7.4
         (a)(4)..............................................        1.4; 10.4
         (b).................................................   Not Applicable
         (c)(1)..............................................              1.1
         (c)(2)..............................................         1.1; 1.2
         (c)(3)..............................................   Not Applicable
         (d).................................................   Not Applicable
         (e).................................................              1.2
Section 315(a)...............................................              6.1
         (b).................................................              6.2
         (c).................................................              6.1
         (d).................................................              6.1
         (e).................................................             5.14
Section 316(a)...............................................              1.1
         (a)(1)(A)...........................................        5.2; 5.12
         (a)(1)(B)...........................................             5.13
         (a)(2)..............................................   Not Applicable
         (b).................................................              5.8
</TABLE>


                                       -i-

<PAGE>   3



<TABLE>
<CAPTION>
 Trust Indenture
   Act Section                                                 Indenture Section
<C>                                                            <S>
         (c).................................................              1.4
(Section) 317(a)(1)..........................................              5.3
         (a)(2)..............................................              5.4
         (b).................................................             10.3
Section 318(a)...............................................              1.7
</TABLE>



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


                                      -ii-

<PAGE>   4

                                TABLE OF CONTENTS


<TABLE>
<S>                                                                                                               <C>
RECITALS OF THE COMPANY...........................................................................................1

ARTICLE ONE
         DEFINITIONS AND OTHER PROVISIONS OF GENERAL APPLICATION..................................................1
         SECTION 101.  Definitions................................................................................1
         SECTION 102.  Compliance Certificates and Opinions......................................................13
         SECTION 103.  Form of Documents Delivered to Trustee....................................................14
         SECTION 104.  Acts of Holders; Record Dates.............................................................15
         SECTION 105.  Notices, Etc., to Trustee and Company.....................................................16
         SECTION 106.  Notice to Holders; Waiver.................................................................16
         SECTION 107.  Conflict with Trust Indenture Act.........................................................17
         SECTION 108.  Effect of Headings and Table of Contents..................................................17
         SECTION 109.  Successors and Assigns....................................................................17
         SECTION 110.  Separability Clause.......................................................................17
         SECTION 111.  Benefits of Indenture.....................................................................17
         SECTION 112.  Governing Law.............................................................................17
         SECTION 113.  Legal Holidays............................................................................17
         SECTION 114.  Language of Notices, Etc..................................................................18
         SECTION 115.  Stockholders, Officers and Directors of the Company Exempt from
                       Individual Liability......................................................................18

ARTICLE TWO
         SECURITIES FORMS........................................................................................18
         SECTION 201.  Forms Generally...........................................................................18
         SECTION 202.  Form of Face of Security..................................................................19
         SECTION 203.  Form of Reverse of Security...............................................................21
         SECTION 204.  Global Securities.........................................................................26
         SECTION 205.  Form of Trustee's Certificate of Authentication...........................................27

ARTICLE THREE
         THE SECURITIES..........................................................................................28
         SECTION 301.  Amount Unlimited; Issuable in Series......................................................28
         SECTION 302.  Currency; Denominations...................................................................31
         SECTION 303.  Execution, Authentication, Delivery and Dating............................................31
         SECTION 304.  Temporary Securities......................................................................33
         SECTION 305.  Registration, Registration of Transfer and Exchange.......................................33
         SECTION 306.  Mutilated, Destroyed, Lost and Stolen Securities..........................................35
         SECTION 307.  Payment of Interest; Interest Rights Preserved............................................36
         SECTION 308.  Persons Deemed Owners.....................................................................37
         SECTION 309.  Cancellation..............................................................................37
         SECTION 310.  Computation of Interest...................................................................38
         SECTION 311.  CUSIP Numbers.............................................................................38
</TABLE>


                                     -iii-

<PAGE>   5

<TABLE>
<S>                                                                                                              <C>
ARTICLE FOUR
         SATISFACTION AND DISCHARGE..............................................................................38
         SECTION 401.  Satisfaction and Discharge of Indenture...................................................38
         SECTION 402.  Application of Trust Money................................................................39

ARTICLE FIVE
         REMEDIES................................................................................................40
         SECTION 501.  Events of Default.........................................................................40
         SECTION 502.  Acceleration of Maturity; Rescission and Annulment........................................41
         SECTION 503.  Collection of Indebtedness and Suits for Enforcement by Trustee...........................42
         SECTION 504.  Trustee May File Proofs of Claim..........................................................42
         SECTION 505.  Trustee May Enforce Claims Without Possession of Securities...............................43
         SECTION 506.  Application of Money Collected............................................................43
         SECTION 507.  Limitation on Suits.......................................................................43
         SECTION 508.  Unconditional Right of Holders to Receive Principal, Premium
                           and Interest..........................................................................44
         SECTION 509.  Restoration of Rights and Remedies........................................................44
         SECTION 510.  Rights and Remedies Cumulative............................................................45
         SECTION 511.  Delay or Omission Not Waiver..............................................................45
         SECTION 512.  Control by Holders........................................................................45
         SECTION 513.  Waiver of Past Defaults...................................................................45
         SECTION 514.  Undertaking for Costs.....................................................................46
         SECTION 515.  Waiver of Usury, Stay or Extension Laws...................................................46

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

ARTICLE SEVEN
         HOLDERS' LISTS AND REPORTS BY TRUSTEE AND COMPANY.......................................................55
         SECTION 701.  Company to Furnish Trustee Names and Addresses of Holders.................................55
         SECTION 702.  Preservation of Information; Communications to Holders....................................55
         SECTION 703.  Reports by Trustee........................................................................56
         SECTION 704.  Reports by Company........................................................................56
</TABLE>


                                      -iv-

<PAGE>   6


<TABLE>
<S>                                                                                                              <C>
ARTICLE EIGHT
         CONSOLIDATION, MERGER, CONVEYANCE, TRANSFER OR LEASE....................................................57
         SECTION 801.  Company May Consolidate, Etc., Only on Certain Terms......................................57
         SECTION 802.  Conveyance to Eligible Partnership........................................................58
         SECTION 803.  Successor Substituted.....................................................................58

ARTICLE NINE
         SUPPLEMENTAL INDENTURES.................................................................................59
         SECTION 901.  Supplemental Indentures Without Consent of Holders........................................59
         SECTION 902.  Supplemental Indentures with Consent of Holders...........................................60
         SECTION 903.  Execution of Supplemental Indentures......................................................61
         SECTION 904.  Effect of Supplemental Indentures.........................................................61
         SECTION 905.  Conformity with Trust Indenture Act.......................................................62
         SECTION 906.  Reference in Securities to Supplemental Indentures........................................62

ARTICLE TEN
         COVENANTS...............................................................................................62
         SECTION 1001.  Payment of Principal, Premium and Interest...............................................62
         SECTION 1002.  Maintenance of Office or Agency..........................................................62
         SECTION 1003.  Money for Securities Payments to Be Held in Trust........................................63
         SECTION 1004.  Statement by Officers as to Default......................................................64
         SECTION 1005.  Existence................................................................................64
         SECTION 1006.  Limitations on Liens.....................................................................64
         SECTION 1007.  Restriction of Sale-Leaseback Transaction................................................65
         SECTION 1008. Waiver of Certain Covenants...............................................................65
         SECTION 1009. Calculation of Original Issue Discount....................................................66

ARTICLE ELEVEN
         REDEMPTION OF SECURITIES................................................................................66
         SECTION 1101.  Applicability of Article.................................................................66
         SECTION 1102.  Election to Redeem; Notice to Trustee....................................................66
         SECTION 1103.  Selection by Trustee of Securities to be Redeemed........................................67
         SECTION 1104.  Notice of Redemption.....................................................................67
         SECTION 1105.  Deposit of Redemption Price..............................................................68
         SECTION 1106.  Securities Payable on Redemption Date....................................................68
         SECTION 1107.  Securities Redeemed in Part..............................................................68

ARTICLE TWELVE
         SINKING FUNDS...........................................................................................69
         SECTION 1201.  Applicability of Article.................................................................69
         SECTION 1202.  Satisfaction of Sinking Fund Payments with Securities....................................69
         SECTION 1203.  Redemption of Securities for Sinking Fund................................................69

ARTICLE THIRTEEN
         DEFEASANCE..............................................................................................70
         SECTION 1301.  Applicability of Article.................................................................70
         SECTION 1302.  Legal Defeasance.........................................................................70
         SECTION 1303.  Covenant Defeasance......................................................................71
</TABLE>


                                                        -v-
<PAGE>   7

<TABLE>
<S>                                                                                                              <C>
         SECTION 1304.  Application by Trustee of Funds Deposited for Payment of
                           Securities............................................................................73
         SECTION 1305.  Repayment to Company.....................................................................73
         SECTION 1306.  Miscellaneous............................................................................73

ARTICLE FOURTEEN
         REPAYMENT AT THE OPTION OF HOLDERS......................................................................73

ARTICLE FIFTEEN
         MEETINGS OF HOLDERS OF SECURITIES.......................................................................74
         SECTION 1501.  Purposes for Which Meetings May Be Called................................................74
         SECTION 1502.  Call, Notice and Place of Meetings.......................................................74
         SECTION 1503.  Persons Entitled to Vote at Meetings.....................................................74
         SECTION 1504.  Quorum; Action...........................................................................75
         SECTION 1505.  Determination of Voting Rights; Conduct and Adjournment
                             of Meetings.........................................................................75
         SECTION 1506.  Counting Votes and Recording Action of Meetings..........................................76

</TABLE>

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


                                      -vi-

<PAGE>   8


         INDENTURE dated as of June 1, 1999, between SANTA FE SNYDER
CORPORATION, a corporation duly organized and existing under the laws of
Delaware (the "Company"), having its principal office at 1616 South Voss Road,
10th Floor, Houston, Texas 77057, and THE BANK OF NEW YORK, a New York banking
corporation, as Trustee (the "Trustee").

                             RECITALS OF THE COMPANY

         The Company has duly authorized the execution and delivery of this
Indenture to provide for the issuance from time to time of its senior unsecured
debentures, notes or other evidences of indebtedness (the "Securities"), to be
unlimited as to principal amount, to bear such rate of interest, to mature at
such time or times, to be issued in one or more series and to have such other
provisions as shall be fixed as provided.

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

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

         NOW, THEREFORE, THIS INDENTURE WITNESSETH:

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

                                   ARTICLE ONE

             DEFINITIONS AND OTHER PROVISIONS OF GENERAL APPLICATION

SECTION 101.  Definitions.

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

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

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

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


                                       -1-
<PAGE>   9

computation required or permitted hereunder shall mean such accounting
principles as are generally accepted in the United States at the date of such
computation;

                  (4) 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; and

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

         Certain terms used principally in certain Articles hereof are defined
in those Articles.

         "Act", when used with respect to any Holder, has the meaning specified
in Section 104.

         "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 specified 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.

         "Attributable Indebtedness" means with respect to a Sale-Leaseback
Transaction involving a Principal Property, as of the time of determination, the
lesser of (i) the fair market value of such Principal Property (as determined in
good faith by the Company's Board of Directors); (ii) the present value of the
total Net Amount of Rent required to be paid under the lease involved in such
Sale-Leaseback Transaction during the remaining term thereof (including any
renewal term exercisable at the lessee's option or period for which the lease
has been extended), discounted at the rate of interest set forth or implicit in
the terms of such lease or, if not practicable to determine such rate, the
weighted average interest rate per annum borne by the Securities of the series
in respect of which such determination is being made, compounded semiannually;
(iii) if the obligation with respect to the Sale-Leaseback Transaction
constitutes an obligation that is required to be classified and accounted for as
a Capitalized Lease Obligation for financial reporting purposes in accordance
with GAAP, the amount equal to the capitalized amount of such obligation
determined in accordance with GAAP and included in the financial statements of
lessee required to be paid by the lessee.

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

         "Authorized Newspaper" means a newspaper, in the English language or in
an official language of the country of publication, customarily published on
each Business Day, whether or not published on Saturdays, Sundays or holidays,
and of general circulation in the place in connection with which the term is
used or in the financial community of such place. Where successive publications
are required to be made in Authorized Newspapers, the successive publications
may be


                                       -2-

<PAGE>   10

made in the same or different newspapers in the same city meeting the foregoing
requirements and in each case on any day that is a Business Day in the place of
publication.

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

         "Board of Directors" means either the board of directors of the Company
or any duly authorized executive or other committee of that board.

         "Board Resolution" means a copy of one or more resolutions certified by
the Secretary or an Assistant Secretary of the Company, the principal financial
officer of the Company or any other authorized officer of the Company or a
person duly authorized by any of them, 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 other
location, means, except as otherwise provided as contemplated by Section 301
with respect to any series of Securities, each Monday, Tuesday, Wednesday,
Thursday and Friday which is not a day on which banking institutions in that
Place of Payment or other location are authorized or obligated by law, executive
order or regulation to close.

         "Capital Stock" of any Person means any and all shares, interests,
rights to purchase, warrants, options, participations or other equivalents of or
interests in equity of such Person, including any Preferred Stock, but excluding
any debt securities convertible into such equity.

         "Capitalized Lease Obligation" means, at the time any determination
thereof is to be made, the amount of the liability of a Person in respect of a
capital lease that would at such time be required to be capitalized on a balance
sheet of such Person in accordance with GAAP.

         "Commodity Price Protection Agreement" means, in respect of any Person,
any forward contract, commodity swap agreement, commodity option agreement or
other similar agreement or arrangement designed to protect such Person against
fluctuations in commodity prices.

         "Company" means the Person named as the "Company" in the first
paragraph of this instrument until a successor Person or an Eligible Partnership
shall have become a successor or co-obligor of the Securities pursuant to the
applicable provisions of this Indenture, and thereafter "Company" shall mean
such successor Person or, in the case of an Eligible Partnership, the Company
and such Eligible Partnership.

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


                                       -3-

<PAGE>   11

         "Consolidated Net Tangible Assets" means, at any date of determination,
the aggregate amount of total assets included in the Company's most recent
quarterly or annual consolidated balance sheet prepared in accordance with GAAP
less applicable reserves reflected in such balance sheet, after deducting the
following amounts: (i) all current liabilities reflected in such balance sheet;
and (ii) all goodwill, trade names, trademarks, patents, unamortized debt
discount and expenses and other like intangibles reflected in such balance
sheet.

         "Corporate Trust Office" means the office of the Trustee at which at
any particular time its corporate trust business shall be principally
administered, which at the date hereof is 101 Barclay Street, Floor 21 West, New
York, NY 10286.

         "corporation" includes corporations, associations, partnerships,
limited liability companies, joint-stock companies and business trusts.

         "covenant defeasance" has the meaning specified in Section 1303.

         "Currency Exchange Protection Agreement" means, in respect of any
Person, any foreign exchange contract, currency swap agreement, currency option
or other similar agreement or arrangement designed to protect such Person
against fluctuations in currency exchange rates.

         "CUSIP number" means the alphanumeric designation assigned to a
security by Standard & Poor's Ratings Group, CUSIP Service Bureau, or any
successor thereto.

         "Custodian" means any receiver, trustee, assignee, liquidator or
similar official under any Bankruptcy Law.

         "Default" means, with respect to a series of Securities, any event
which is, or after notice or lapse of time or both would become, an Event of
Default with respect to Securities of such series.

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

         "defeasance" has the meaning specified in Section 1302.

         "Definitive Security" means a Security other than a Global Security or
a temporary Security.

         "Depositary" means, with respect to Securities of any series issuable
in whole or in part in the form of one or more Global Securities, a clearing
agency registered under the Exchange Act that is designated to act as Depositary
for such Securities as contemplated by Section 301, until a successor Depositary
shall have become such pursuant to the applicable provisions of this Indenture,
and thereafter shall mean or include each Person which is then a Depositary
hereunder, and if at any time there is more than one such Person, shall be a
collective reference to such Persons.


                                       -4-

<PAGE>   12

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

         "Eligible Partnership" means a limited partnership or limited liability
company organized under the laws of the United States, a state thereof or the
District of Columbia, or Canada or a province thereof, and all the outstanding
partnership or limited liability company interests of which are owned directly
or indirectly by the Company or one or more of its Subsidiaries and to which all
or substantially all of the Company's property or assets have been transferred
in accordance with Section 801.

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

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

         "Exempted Indebtedness" means Indebtedness of which the Company or any
of its Subsidiaries is an obligor or guarantor, or that has been assumed by the
Company or any of its Subsidiaries, which Indebtedness is secured by a Lien
(other than a Permitted Lien), or any Attributable Indebtedness of the Company
or any of its Subsidiaries, provided that the sum of the aggregate principal
amount of all such Indebtedness then outstanding (other than the Securities) so
secured by a Lien (other than a Permitted Lien) and the amount of all the
Outstanding Attributable Indebtedness, in each case not otherwise permitted by
Section 1006 or 1007, does not at the time such Indebtedness or Attributable
Indebtedness is incurred exceed 10% of the Consolidated Net Tangible Assets of
the Company and its Subsidiaries.

         "Funded Debt" means all Indebtedness for borrowed money maturing one
year or more from the date of the creation thereof, all Indebtedness for
borrowed money directly or indirectly renewable or extendible, at the option of
the debtor, by its terms or by the terms of any instrument or agreement relating
thereto, to a date one year or more from the date of the creation thereof, and
all Indebtedness for borrowed money under a revolving credit or similar
agreement obligating the lender or lenders to extend credit over a period of one
year or more.

         "GAAP" means such accounting principles as are generally accepted in
the United States of America as of the date or time of any computation or
determination required hereunder, including those principles set forth in (i)
the opinions and pronouncements of the Accounting Principles Board of the
American Institute of Certified Public Accountants, (ii) statements and
pronouncements of the Financial Accounting Standards Board and (iii) the rules
and regulations of the SEC governing the inclusion of financial statements
(including pro forma financial statements) in periodic reports required to be
filed pursuant to Section 13 of the Exchange Act, including opinions and
pronouncements in staff accounting bulletins and similar written statements from
the accounting staff of the SEC.


                                       -5-

<PAGE>   13

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

         "Government Contract Lien" means any Lien in favor of the United States
or any State thereof, territory or possession thereof (or the District of
Columbia), or any department, agency, instrumentality or political subdivision
thereof to secure partial, progress, advance or other payments pursuant to the
provisions of any contract, statute, regulation or order or to secure any
Indebtedness incurred for the purpose of financing all or part of the purchase
price or the cost of constructing, developing or improving the property subject
to such Liens.

         "Hedging Obligations" means the net obligations (not the notional
amount) of such Person pursuant to any Interest Rate Protection Agreement,
Currency Exchange Protection Agreement, Commodity Price Protection Agreement or
other similar agreement.

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

         "Indebtedness" means, with respect to any Person, at any date, any of
the following, without duplication: (i) any liability of such Person (A) for
borrowed money (whether or not the recourse of the lender is to the whole of the
assets of such Person or only to a portion thereof), (B) evidenced by a note,
bond, debenture or similar instrument, or (C) for the payment of money relating
to a Capitalized Lease Obligation or other obligation (whether issued or
assumed) relating to the deferred purchase price of property; (ii) all
conditional sale obligations and all obligations under any title retention
agreement (even if the rights and remedies of the seller under such agreement in
the event of default are limited to repossession or sale of such property);
(iii) all obligations for the reimbursement of any obligor on any letter of
credit, banker's acceptance or similar credit translation, other than as entered
into in the ordinary course of business; (iv) all indebtedness of others secured
by (or for which the holder of such indebtedness has an existing right,
contingent or otherwise, to be secured by) any Lien on any asset or property
(including, without limitation, leasehold interests and any other tangible or
intangible property) of such Person, whether or not such indebtedness is assumed
by such Person or is not otherwise such Person's legal liability in full, the
amount of such indebtedness for the purposes of this definition shall be limited
to the lesser of the amount of such indebtedness secured by such Lien or the
fair market value of the assets or the property securing such lien, (v) all
indebtedness of others (including all interest and dividends on any Indebtedness
or Preferred Stock of any other Person the payment of which is) guaranteed,
directly or indirectly, by such Person or that is otherwise its legal liability
or which such Person has agreed to purchase or repurchase or in respect of which
such Person has agreed contingently to supply or advance funds; and (vi) to the
extent not otherwise included in this definition, obligations in respect of
Hedging Obligations. Indebtedness shall not include (a) accounts payable arising
in the ordinary course of business and (b) any obligations in respect of
prepayments for natural gas or oil production or natural gas or oil imbalances.


                                       -6-

<PAGE>   14

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

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

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

         "Interest Rate Protection Agreement" means, in respect of any Person,
any interest rate swap agreement, interest rate option agreement, interest rate
cap agreement, interest rate collar agreement, interest rate floor agreement or
other similar agreement or arrangement designed to protect such Person against
fluctuations in interest rates.

         "Lien" means any mortgage, pledge, security interest, charge, lien,
encumbrance or adverse claim affecting title or resulting in an encumbrance
against real or personal property or a security interest of any kind, whether or
not filed, recorded or perfected under applicable law.

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

         "Net Amount of Rent" as to any lease for any period means the aggregate
amount of rent payable by the lessee with respect to such period after excluding
amounts, whether or not designated as rent or additional rent, required to be
paid on account of or contingent upon maintenance and repairs, insurance, taxes,
assessments, water rates and similar charges. In the case of any lease that is
terminable by the lessee upon the payment of a penalty, such net amount shall be
the lesser of (i) the net amount determined assuming termination of the lease on
the first date such lease may be terminated (in which case such net amount shall
also include the amount of such penalty, but no rent shall be considered as
payable under such lease subsequent to the first date upon which it may be so
terminated) or (ii) such net amount assuming no such termination.

         "Notice of Default" means a written notice of the kind specified in
Section 501(3).

         "Officer's Certificate" means a certificate signed by the Chairman of
the Board, the Chief Executive Officer, the President, any Vice President or any
other authorized officer of the Company or a person duly authorized by any of
them, and delivered to the Trustee, which certificate shall comply with the
requirements of Section 314(e) of the Trust Indenture Act. The officer signing
an


                                       -7-

<PAGE>   15


Officer's Certificate given pursuant to Section 1004 shall be the principal
executive, financial or accounting officer of the Company.

         "Opinion of Counsel" means a written opinion of legal counsel, who may
be an employee of or counsel for the Company and who shall be reasonably
acceptable to the Trustee, which opinion, if required by the Trust Indenture
Act, complies with the requirements of Section 314(e) of the Trust Indenture
Act.

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

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

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

                  (2) Securities for whose payment at the Stated Maturity
thereof or upon redemption money in the necessary amount has been theretofore
deposited with the Trustee or any Paying Agent (other than the Company) in trust
or set aside and segregated in trust by the Company (if the Company shall act as
its own Paying Agent) for the Holders of such Securities; provided, however,
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;

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

                  (4) Securities, except to the extent provided in Sections 1302
and 1303, with respect to which the Company has effected defeasance or covenant
defeasance as provided in Article Thirteen;

provided, however, that in determining whether the Holders of the requisite
principal amount of the Outstanding Securities have given any request, demand,
authorization, direction, notice, consent or waiver hereunder, (A) the principal
amount of an Original Issue Discount Security that shall be deemed to be
Outstanding shall be the amount of the principal thereof that would be due and
payable as of the date of such determination upon acceleration of the Maturity
thereof on such date pursuant to Section 502, (B) the principal amount of a
Security denominated in one or more currencies or currency units other than U.S.
dollars shall be the U.S. dollar equivalent of such currencies or currency
units, determined in the manner provided as contemplated by Section 301 on the
date of


                                       -8-

<PAGE>   16

original issuance of such Security, of the principal amount (or, in the case of
an Original Issue Discount Security, the U.S. dollar equivalent (as so
determined) on the date of original issuance of such Security of the amount
determined as provided in Clause (A) above) of such Security, and (C) Securities
owned by the Company or any other obligor upon the Securities or any Affiliate
of the Company 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 relying upon any such request, demand, authorization, direction,
notice, consent or waiver, only Securities which a responsible officer of the
Trustee actually knows to be so owned shall be so disregarded. Securities so
owned as described in Clause (C) above which have been pledged in good faith may
be regarded as Outstanding if the pledgee establishes to the satisfaction of the
Trustee the pledgee's right so to act with respect to such Securities and that
the pledgee is not the Company or any other obligor upon the Securities or any
Affiliate of the Company or of such other obligor.

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

         "Periodic Offering" means an offering of Securities of a series from
time to time, the specific terms of which Securities, including, without
limitation, the rate or rates of interest or formula for determining the rate or
rates of interest thereon, if any, the Stated Maturity or Stated Maturities
thereof, the original issue date or dates thereof, the redemption provisions, if
any, with respect thereto, and any other terms specified as contemplated by
Section 301 with respect thereto, are to be determined by the Company upon the
issuance of such Securities.

         "Permitted Liens" means, with respect to any Person:

         (i)      with respect to any series of Securities issued under this
                  Indenture, Liens existing on or provided for under the terms
                  of agreements existing on the date the Securities of such
                  series are issued;

         (ii)     Liens on property, shares of stock, Indebtedness or other
                  assets of any Person (which is not a Subsidiary) existing at
                  the time such Person is merged into or amalgamated or
                  consolidated with or into the Company or any of its
                  Subsidiaries or becomes a direct or indirect Subsidiary of the
                  Company or at the time of a sale, lease or other disposition
                  of properties of a Person as an entirety or substantially as
                  an entirety to the Company or any of its Subsidiaries;
                  provided that such Liens are not incurred in anticipation of
                  such Person becoming a Subsidiary;

         (iii)    Liens on property, shares of stock, Indebtedness or other
                  assets existing at the time of acquisition thereof by the
                  Company or any of its Subsidiaries, or Liens to secure all or
                  part of the purchase price thereof;

         (iv)     Liens on property, shares of stock, Indebtedness, or other
                  assets to secure any Indebtedness incurred prior to, at the
                  time of or within 24 months after, the latest of the


                                      -9-

<PAGE>   17

                  acquisition thereof or, in the case of property, the
                  completion of development or improvements or the commencement
                  of commercial operation of such property, for the purpose of
                  financing all or part of the purchase price thereof, such
                  construction or the making of such developments or
                  improvements;

         (v)      Liens securing Indebtedness owed to the Company or any of its
                  Subsidiaries;

         (vi)     Liens on property to secure all or part of the cost of
                  exploration, drilling, or development of the property or all
                  or any portion of the cost of acquiring, constructing,
                  altering, improving, developing or repairing any property or
                  asset, or improvements used in connection with that property
                  or Liens incurred by the Company or any of its Subsidiaries to
                  provide funds for any such activities;

         (vii)    Government Contract Liens;

         (viii)   Liens on any property to secure bonds for the construction,
                  installation or financing of pollution control or abatement
                  facilities or other forms of industrial revenue bond
                  financing, or indebtedness issued or guaranteed by the United
                  States, any state or any department, agency or instrumentality
                  thereof;

         (ix)     Liens in respect of Production Payments and Reserve Sales and
                  Liens deemed to exist by reason of negative pledges in respect
                  of Indebtedness; and

         (x)      Liens to secure any refinancing, refunding, extension, renewal
                  or replacement (or successive refinancings, refundings,
                  extensions, renewals or replacements), as a whole or in part,
                  of any Indebtedness secured by any Lien referred to in clauses
                  (i) through (ix) above; provided, however, that such Lien(s)
                  shall not extend to any property of the Company or any of its
                  Subsidiaries other than the property specified in clauses (i)
                  through (ix) above to which the Lien securing such refinanced,
                  refunded, extended, renewed or replaced Indebtedness applied
                  and improvements thereto or proceeds therefrom.

         "Person" means any individual, corporation, partnership, joint venture,
limited liability company, association, joint-stock company, trust, other
entity, unincorporated organization or government or any agency or political
subdivision thereof. Notwithstanding the foregoing, however, the term "Person"
shall not mean or include an arrangement that is not a separate legal entity,
such as the legal arrangement between two or more parties owning interests in
the same property or unit.

         "Place of Payment", when used with respect to the Securities of any
series, means, unless otherwise specifically provided for with respect to such
series as contemplated by Section 301, the office or agency of the Company in
The City of New York and such other place or places where, subject to the
provisions of Section 1002, the principal of and any premium and interest on the
Securities of that series are payable as specified as contemplated by Section
301.


                                      -10-

<PAGE>   18


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

         "Preferred Stock" as applied to the Capital Stock of any Person, means
Capital Stock of any class or classes (however designated) which is preferred as
to the payment of dividends or distributions, or as to the distribution of
assets upon any voluntary or involuntary liquidation or dissolution of such
Person, over shares of Capital Stock of any other class of such Person.

         "Principal Property" means any property interest in oil and gas
reserves owned by the Company or any of its Subsidiaries and which, as of the
time of such determination, is capable of producing crude oil, condensate,
natural gas, natural gas liquids or other similar hydrocarbon substances in
commercial quantities. Without limitation, the term "Principal Property" does
not include: (i) accounts receivable and other obligations of any obligor under
the contract for the sale, exploration, production, drilling, development,
processing or transportation of crude oil, condensate, natural gas, natural gas
liquids or similar hydrocarbon substances by the Company or any of its
Subsidiaries, and all guarantees, insurance, letters of credit and other
agreements or arrangements of whatever character supporting or securing payment
of such receivables or obligations; or (ii) the production or any proceeds from
production of crude oil, condensate, natural gas, natural gas liquids or similar
hydrocarbon substances.

         "Production Payments and Reserve Sales" means the grant or transfer by
the Company or any of its Subsidiaries to any Person of a royalty, overriding
royalty, net profits interest, production payment (whether volumetric or dollar
denominated), partnership or other interest in oil and natural gas properties,
reserves or the right to receive all or a portion of the production or the
proceeds from the sale of production attributable to such properties.

         "Redeemable Stock" of any Person means any equity security of such
Person that by its terms (or by the terms of any security into which it is
convertible or for which it is exchangeable), or otherwise (including on the
happening of an event), is or could become required to be redeemed for cash or
other property or is or could become redeemable for cash or other property at
the option of the holder thereof, in whole or in part, on or prior to the first
anniversary of the Stated Maturity of the applicable series of Notes; or is or
could become exchangeable at the option of the holder thereof for Indebtedness
at any time in whole or in part, on or prior to the first anniversary of the
Stated Maturity of the applicable series of Notes; provided, however, that
Redeemable Stock shall not include any security that may be exchanged or
converted at the option of the holder for Capital Stock of the Company having no
preference as to dividends or liquidation over any other Capital Stock of the
Company.

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


                                      -11-

<PAGE>   19


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

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

         "Sale-Leaseback Transaction" means any arrangement with any Person
pursuant to which the Company or any of its Subsidiaries leases any Principal
Property that has been or is to be sold or transferred by the Company or its
Subsidiaries to such Person, other than (i) leases for a term of not more than
three years, (ii) leases between the Company and any of its Subsidiaries or
between any Subsidiaries of the Company, and (iii) leases of property executed
by the time of, or within 12 months after the latest of, the acquisition, the
completion of construction, development or improvement, or the commencement of
commercial operation of such property.

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

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

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

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

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

         "Subsidiary" of any Person means (i) any Person of which at the time of
such determination more than 50% of the outstanding voting stock of which is
owned or controlled, directly or indirectly, by such Person or one or more of
the Subsidiaries of that Person or a combination thereof, and (ii) any other
Person in which such Person or one or more of the Subsidiaries of that Person
(or a combination thereof) has the power to control by contract or otherwise the
board of directors or equivalent governing body or otherwise controls such
entity. For the purposes of this definition, "voting stock" means stock of the
class or classes which under ordinary circumstances has voting power to elect at
least a majority of the members of the board of directors, managers or trustees
of such corporation, provided that stock that carries only the right to vote
conditionally upon the


                                      -12-

<PAGE>   20

occurrence of an event shall not constitute voting stock whether or not such
event shall have occurred.

         "Trust Indenture Act" means the Trust Indenture Act of 1939 as in force
at the date as of which this instrument was executed, except as otherwise
provided in Section 905; provided, however, that if the Trust Indenture Act of
1939 is amended after such date, "Trust Indenture Act" means, to the extent
required by any such amendment, the Trust Indenture Act of 1939 as so amended.

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

         "U.S. Government Obligations" means securities which are direct
obligations (or certificates representing an ownership interest in such
obligations) of the United States of America (including any agency or
instrumentality thereof) for the payment of which the full faith and credit of
the United States of America is pledged and which are not callable at the option
of the issuer thereof.

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

SECTION 102.  Compliance Certificates and Opinions.

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

         Every certificate or opinion with respect to compliance with a
condition or covenant provided for in this Indenture (except for certificates
provided for in Section 1004) shall include:

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

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



                                      -13-

<PAGE>   21

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

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

SECTION 103.  Form of Documents Delivered to Trustee.

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

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

         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 104.  Acts of Holders; Record Dates.

         Any request, demand, authorization, direction, notice, consent, waiver
or other action provided or permitted by this Indenture to be given or taken by
Holders may be embodied in and evidenced by (a) one or more instruments of
substantially similar tenor signed (either physically or by means of a facsimile
or an electronic transmission, provided that such electronic transmission is
transmitted through the facilities of a Depositary) by such Holders in person or
by agent duly appointed in writing; (b) the record of the Holders voting in
favor thereof at any meeting of Holders duly called and held in accordance with
the provisions of Article Fifteen, or (c) a combination of such instruments and
record. Except as herein otherwise expressly provided, such action shall become
effective when such instrument or instruments or record are delivered (either
physically or by means of a facsimile or an electronic transmission, provided
that such electronic transmission is transmitted through the facilities of a
Depositary) to the Trustee and, where it is hereby expressly


                                      -14-

<PAGE>   22

required, to the Company. Such instrument or instruments or record (and the
action embodied therein and evidenced thereby) are herein sometimes referred to
as the "Act" of the Holders signing such instrument or instruments or of the
Holders reflected by such record. Proof of execution of any such instrument or
of a writing appointing any such agent shall be sufficient for any purpose of
this Indenture and (subject to Section 315 of the Trust Indenture Act)
conclusive in favor of the Trustee and the Company, if made in the manner
provided in this Section.

         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 manner which the Trustee deems sufficient.

         The ownership, principal amount and serial numbers of Securities held
by any Person, and the date of commencement of such Person's holding the same,
shall be proved by the Security Register.

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

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

         The Company may set any day as the record date for the purpose of
determining the Holders of Outstanding Securities of any series entitled to give
or take any request, demand, authorization, direction, notice, consent, waiver
or other action provided or permitted by this Indenture to be given or taken by
Holders of Securities of such series, but the Company shall have no obligation
to do so. With regard to any record date set pursuant to this paragraph, the
Holders of Outstanding Securities of the relevant series on such record date (or
their duly appointed agents), and only such Persons, shall be entitled to give
or take the relevant action, whether or not such Holders remain Holders after
such record date.

         The record of any meeting of Holders shall be proved as provided in
Section 1506.



                                      -15-

<PAGE>   23

SECTION 105.  Notices, Etc., to Trustee and Company.

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

                  (1) the Trustee by any Holder or by the Company shall be
sufficient for every purpose hereunder if made, given, furnished or filed in
writing to or with the Trustee at its Corporate Trust Office, Attention:
Corporate Trust Trustee Administration, or

                  (2) the Company by the Trustee or by any Holder shall be
sufficient for every purpose hereunder (unless otherwise herein expressly
provided) if in writing and mailed, first-class postage prepaid, to the Company
addressed to it at 1616 South Voss Road, 10th Floor, Houston, Texas 77057, to
the attention of the Secretary, or at any other address previously furnished in
writing to the Trustee by the Company.

SECTION 106.  Notice to Holders; Waiver.

         Except as otherwise expressly provided in or pursuant to this
Indenture, where this Indenture provides for notice to Holders of any event,
such notice shall be sufficiently given (unless otherwise herein expressly
provided) if in writing and mailed, first-class postage prepaid (if
international mail, by air mail), to each 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.

         Where this Indenture provides for notice in any manner, such notice may
be waived in writing by the Person entitled to receive such notice, either
before or after the event, and such waiver shall be the equivalent of such
notice. Waivers of notice by Holders shall be filed with the Trustee, but such
filing shall not be a condition precedent to the validity of any action taken in
reliance upon such waiver.

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

SECTION 107.  Conflict with Trust Indenture Act.

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


                                      -16-

<PAGE>   24

Act 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 108.  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 109.  Successors and Assigns.

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

SECTION 110.  Separability Clause.

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

SECTION 111.  Benefits of Indenture.

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

SECTION 112.  Governing Law.

         This Indenture and the Securities shall be governed by and construed in
accordance with the law of the State of New York, without regard to the
conflicts of laws or principles thereof.

SECTION 113.  Legal Holidays.

         In any case where any Interest Payment Date, Redemption Date or Stated
Maturity of any Security shall not be a Business Day at any Place of Payment,
then (notwithstanding any other provision of this Indenture or of the Securities
(other than a provision of the Securities of any series which specifically
states that such provision shall apply in lieu of this Section)) payment of
interest 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 or Redemption Date, or at the Stated Maturity, provided that no
interest shall accrue for the period from and after such Interest Payment Date,
Redemption Date or Stated Maturity, as the case may be.


                                      -17-

<PAGE>   25

SECTION 114.  Language of Notices, Etc.

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

SECTION 115.  Stockholders, Officers and Directors of the Company Exempt from
              Individual Liability.

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

                                   ARTICLE TWO

                                SECURITIES FORMS

SECTION 201.  Forms Generally.

         The Securities of each series shall be in substantially the form set
forth in this Article, or in such other form as shall be established by or
pursuant to a Board Resolution, an Officer's Certificate or in one or more
indentures supplemental hereto, in each case with such appropriate insertions,
omissions, substitutions and other variations as are required or permitted by
this Indenture or any indenture supplemental hereto, and may have such letters,
numbers or other marks of identification and such legends or endorsements placed
thereon as may be required to comply with the rules of any securities exchange
or as may, consistently herewith, be determined by the officers executing such
Securities, as evidenced by their execution of the Securities.

         The definitive Securities shall be printed, lithographed or engraved on
steel engraved borders or may be produced in any other manner, all as determined
by the officers executing such Securities, as evidenced by their execution of
such Securities. If the form of Securities of any series is established by
action taken pursuant to a Board Resolution, a copy of an appropriate record of
such action shall be certified by an authorized officer or other authorized
person on behalf of the Company and delivered to the Trustee at or prior to the
delivery of the Company Order contemplated by Section 303 for the authentication
and delivery of such Securities.


                                      -18-

<PAGE>   26

SECTION 202.  Form of Face of Security.

         [Insert any legend required by the United States Internal Revenue Code
and the regulations thereunder.]

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

                           SANTA FE SNYDER CORPORATION

                               [TITLE OF SECURITY]

NO.                                                                        U.S.$

[CUSIP NO.                   ]

         SANTA FE SNYDER CORPORATION, a corporation duly incorporated and
existing under the laws of Delaware (herein called the "Company", which term
includes any successor Person under the Indenture hereinafter referred to), for
value received, hereby promises to pay to      , or registered assigns, the
principal sum of      United States Dollars on      [if the Security is to bear
interest prior to Maturity, insert--, and to pay interest thereon from      , or
from the most recent Interest Payment Date to which interest has been paid or
duly provided for, [semi-annually      on and      in each year,] commencing
,  at the rate of      % per annum, until the principal hereof is paid or made
available for payment [if applicable, insert--, and at the rate of     % per
annum on any overdue principal and premium and on any overdue installment of
interest]. The interest so payable, and punctually paid or duly provided for, on
any Interest Payment Date will, as provided in such Indenture, be paid to the
Person in whose name this Security (or one or more Predecessor Securities) is
registered at the close of business on the Regular Record Date for such
interest, which shall be the      or      (whether or not a Business Day), as
the case may be, next preceding such Interest Payment Date. Any such interest
not so punctually paid or duly provided for will forthwith cease to be payable
to the Holder on such Regular Record Date and may either be paid to the Person
in whose name this Security (or one or more Predecessor Securities) is
registered at the close of business on a Special Record Date for the payment of
such Defaulted Interest to be fixed by the Trustee, notice of which shall be
given to Holders of Securities of this series not less than 10 days


                                      -19-

<PAGE>   27

prior to such Special Record Date, or be paid at any time in any other lawful
manner not inconsistent with the requirements of any securities exchange on
which the Securities of this series may be listed, and upon such notice as may
be required by such exchange, all as more fully provided in such Indenture].

         [If the Security is not to bear interest prior to Maturity, insert--The
principal of this Security shall not bear interest except in the case of a
default in payment of principal upon acceleration, upon redemption or at Stated
Maturity and in such case the overdue principal of this Security shall bear
interest at the rate of      % per annum, which shall accrue from the date of
such default in payment to the date payment of such principal has been made or
duly provided for. Interest on any overdue principal shall be payable on demand.
Any such interest on any overdue principal that is not so paid on demand shall
bear interest at the rate of      % per annum, which shall accrue from the date
of such demand for payment to the date payment of such interest has been made or
duly provided for, and such interest shall also be payable on demand. Interest
will be computed on the basis of a 360- day year of twelve 30-day months.]

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

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

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


                                      -20-

<PAGE>   28


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

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

Dated:                                     SANTA FE SNYDER CORPORATION



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

SECTION 203.  Form of Reverse of Security.

         This Security is one of a duly authorized issue of securities of the
Company (the "Securities"), issued and to be issued in one or more series under
an Indenture dated as of June 1, 1999 (the "Indenture"), between the Company and
The Bank of New York, as Trustee (the "Trustee", which term includes any
successor trustee under the Indenture), to which Indenture and all indentures
supplemental thereto reference is hereby made for a statement of the respective
rights, limitations of rights, obligations, duties and immunities thereunder of
the Company, the Trustee and the Holders of the Securities and of the terms upon
which the Securities are, and are to be, authenticated and delivered. As
provided in the Indenture, the Securities may be issued in one or more series,
which different series may be issued in various aggregate principal amounts, may
mature at different times, may bear interest, if any, at different rates, may be
subject to different redemption provisions, if any, may be subject to different
sinking, purchase or analogous funds, if any, may be subject to different
covenants and Events of Default and may otherwise vary as in the Indenture
provided or permitted. This Security is one of the series designated on the face
hereof [if applicable, insert--, limited in aggregate principal amount to U.S.
$   ].

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

<TABLE>
<CAPTION>
   YEAR        REDEMPTION PRICE        YEAR        REDEMPTION PRICE
   ----        ----------------        ----        ----------------
<S>            <C>                     <C>         <C>
</TABLE>


                                      -21-

<PAGE>   29

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

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

<TABLE>
<CAPTION>
                    REDEMPTION PRICE              REDEMPTION PRICE FOR
                     FOR REDEMPTION               REDEMPTION OTHERWISE
                    THROUGH OPERATION            THAN THROUGH OPERATION
    YEAR           OF THE SINKING FUND             OF THE SINKING FUND
    ----           -------------------           ----------------------
<S>                <C>                           <C>
</TABLE>



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

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

         [Insert other redemption provision(s), if applicable.]


                                      -22-

<PAGE>   30

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

         [If applicable, insert--The Securities of this series are not
redeemable prior to Stated Maturity.]

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

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

         The Indenture permits, with certain exceptions as therein provided, the
amendment thereof and the modification of the rights and obligations of the
Company and the rights of the Holders of the Securities of each series to be
affected under the Indenture at any time by the Company and the Trustee with the
consent of the Holders of a majority in aggregate principal amount of the
Outstanding Securities of all series to be affected (voting as one class). The
Indenture also contains provisions permitting the Holders of a majority in
aggregate principal amount of the Outstanding Securities of all affected series
(voting as one class), on behalf of the Holders of all Securities of such
series, to waive compliance by the Company with certain provisions of the
Indenture. The Indenture permits, with certain exceptions as therein provided,
the Holders of a majority in principal amount of Securities of any series then
Outstanding to waive past defaults under the Indenture with respect to such
series and their consequences. Any such consent or waiver by the Holder of this
Security shall be conclusive and binding upon such Holder and upon all future
Holders of this Security and of any Security issued upon the registration of
transfer hereof or in exchange herefor or in lieu hereof, whether or not
notation of such consent or waiver is made upon this Security.

         As provided in and subject to the provisions of the Indenture, the
Holder of this Security shall not have the right to institute any proceeding
with respect to the Indenture or for the appointment of a receiver or trustee or
for any other remedy thereunder, unless such Holder shall have previously given
the Trustee written notice of a continuing Event of Default with respect to the
Securities of this series, the Holders of not less than 25% in principal amount
of the Securities of this series at the time Outstanding shall have made written
request to the Trustee to institute proceedings in respect of such Event of
Default as Trustee and offered the Trustee reasonable indemnity and the Trustee
shall not have received from the Holders of a majority in principal amount of
Securities of


                                      -23-

<PAGE>   31

this series at the time Outstanding a direction inconsistent with such request,
and shall have failed to institute any such proceeding, for 60 days after
receipt of such notice, request and offer of indemnity. The foregoing shall not
apply to any suit instituted by the Holder of this Security for the enforcement
of any payment of principal hereof or [any premium or] interest hereon on or
after the respective due dates expressed herein.

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

         [If a Global Security, insert--This Global Security or portion hereof
may not be exchanged for Definitive Securities of this series except in the
limited circumstances provided in the Indenture.

         The holders of beneficial interests in this Global Security will not be
entitled to receive physical delivery of Definitive Securities except as
described in the Indenture and will not be considered the Holders thereof for
any purpose under the Indenture.]

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

         The Securities of this series are issuable only in registered form
without coupons in denominations of U.S.$____________ and any integral multiple
thereof. As provided in the Indenture and subject to certain limitations therein
set forth, Securities of this series are exchangeable for a like aggregate
principal amount of Securities of this series and of like tenor of a different
authorized denomination, as requested by the Holder surrendering the same.

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


                                      -24-

<PAGE>   32

         Prior to due presentment of this Security for registration of transfer,
the Company, the Trustee and any agent of the Company or the Trustee may treat
the Person in whose name this Security is registered as the owner hereof for all
purposes, whether or not this Security be overdue, and neither the Company, the
Trustee nor any such agent shall be affected by notice to the contrary.

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

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

         This Security shall be governed by and construed in accordance with the
laws of the State of New York, without regard to conflicts of laws principles
thereof.

         All terms used in this Security which are defined in the Indenture
shall have the meanings assigned to them in the Indenture.

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

         FOR VALUE RECEIVED, the undersigned hereby sell(s), assign(s) and
transfer(s) unto

- --------------------------------------------------------------------------------
            (Please Print or Typewrite Name and Address of Assignee)

the within instrument of SANTA FE SNYDER CORPORATION and does hereby irrevocably
constitute and appoint ________________________ Attorney to transfer said
instrument on the books of the within-named Company, with full power of
substitution in the premises.


                                      -25-



<PAGE>   33
Please Insert Social Security or
Other Identifying Number of Assignee:


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

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

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

SECTION 204.  Global Securities.

         Every Global Security authenticated and delivered hereunder shall bear
a legend in substantially the following form:

                  THIS SECURITY IS A GLOBAL SECURITY WITHIN THE MEANING OF THE
         INDENTURE HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF A
         DEPOSITARY OR A NOMINEE THEREOF. THIS SECURITY MAY NOT BE TRANSFERRED
         TO, OR REGISTERED OR EXCHANGED FOR SECURITIES REGISTERED IN THE NAME
         OF, ANY PERSON OTHER THAN THE DEPOSITARY OR A NOMINEE THEREOF AND NO
         SUCH TRANSFER MAY BE REGISTERED, EXCEPT IN THE LIMITED CIRCUMSTANCES
         DESCRIBED IN THE INDENTURE. EVERY SECURITY AUTHENTICATED AND DELIVERED
         UPON REGISTRATION OF TRANSFER OF, OR IN EXCHANGE FOR OR IN LIEU OF,
         THIS SECURITY SHALL BE A GLOBAL SECURITY SUBJECT TO THE FOREGOING,
         EXCEPT IN SUCH LIMITED CIRCUMSTANCES.

         If Securities of a series are issuable in whole or in part in the form
of one or more Global Securities, as specified as contemplated by Section 301,
then, notwithstanding Clause (9) of Section 301 and the provisions of Section
302, any Global Security shall represent such of the Outstanding Securities of
such series as shall be specified therein and may provide that it shall
represent the aggregate amount of Outstanding Securities from time to time
endorsed thereon and that the aggregate amount of Outstanding Securities
represented thereby may from time to time be reduced or increased, as the case
may be, to reflect exchanges. Any endorsement of a Global Security to reflect
the amount, or any reduction or increase in the amount, of Outstanding
Securities represented thereby shall be made in such manner and upon
instructions given by such Person or Persons as shall be specified therein or in
a Company Order. Subject to the provisions of Sections 303, 304 and 305, the
Trustee shall deliver and redeliver any Global Security in the manner and upon
instructions given by the Person or Persons specified therein or in the
applicable Company Order. Any instructions by the Company with respect to
endorsement or delivery or redelivery of a Global Security shall be


                                      -26-

<PAGE>   34

in a Company Order (which need not comply with Section 102 and need not be
accompanied by an Opinion of Counsel).

         The provisions of the last sentence of Section 303 shall apply to any
Security represented by a Global Security if such Security was never issued and
sold by the Company and the Company delivers to the Trustee the Global Security
together with a Company Order (which need not comply with Section 102 and need
not be accompanied by an Opinion of Counsel) with regard to the reduction or
increase, as the case may be, in the principal amount of Securities represented
thereby, together with the written statement contemplated by the last sentence
of Section 303.

         None of the Company, the Trustee or any of their respective agents will
have any responsibility or liability for any aspect of the records relating to,
or payments made on account of, Securities of any series by the Depositary, or
for maintaining, supervising or reviewing any records of the Depositary relating
to such Debentures. None of the Company, the Trustee or any of their respective
agents shall be liable for any delay by the Depositary or its nominee or its
participants in identifying the beneficial owners, and each such Person may
conclusively rely on, and shall be protected in relying on, instructions from
the Depositary or such nominee or participants for all purposes (including with
respect to the registration and delivery, and the respective principal amounts,
of the Securities to be issued).

SECTION 205.  Form of Trustee's Certificate of Authentication.

         The Trustee's certificates 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.

                                             THE BANK OF NEW YORK,
                                             As Trustee


                                             By:
                                                --------------------------------
                                                      Authorized Signatory


                                  ARTICLE THREE

                                 THE SECURITIES

SECTION 301.  Amount Unlimited; Issuable in Series.

         The aggregate principal amount of Securities which may be authenticated
and delivered under this Indenture is unlimited.


                                      -27-

<PAGE>   35



         The Securities may be issued in one or more series. There shall be
established in or pursuant to (a) a Board Resolution and, subject to Section
303, set forth, or determined in the manner provided, in an Officer's
Certificate, or (b) an Officer's Certificate, or (c) established in one or more
indentures supplemental hereto, prior to the issuance of Securities of any
series,

                  (1) the title of the Securities of the series (which shall
distinguish the Securities of the series from Securities of any other series)
and the form of the Securities of such series if other than the form set forth
in Section 202 or 203;

                  (2) any limit upon the aggregate principal amount of the
Securities of the series which may be authenticated and delivered under this
Indenture (except for Securities authenticated and delivered upon registration
of transfer of, or in exchange for, or in lieu of, other Securities of the
series pursuant to Section 304, 305, 306, 906 or 1107 and except for any
Securities which, pursuant to Section 303, are deemed never to have been
authenticated and delivered hereunder);

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

                  (4) the date or dates on which the principal of the Securities
of the series is payable or the method or methods of determination thereof;

                  (5) the rate or rates at which the Securities of the series
shall bear interest, if any, or the method or methods of determination thereof,
the date or dates from which such interest shall accrue, or the method or
methods of determination thereof, the Interest Payment Dates on which any such
interest shall be payable and the Regular Record Date for any interest payable
on any Interest Payment Date, the notice, if any, to Holders regarding the
determination of interest on a floating rate series of Securities and the manner
of giving such notice, and the basis upon which interest shall be calculated if
other than that of a 360-day year of twelve 30-day months;

                  (6) the place or places where, subject to the provisions of
Section 1002, the principal of and any premium and interest on Securities of the
series shall be payable, Securities of the series may be surrendered for
registration of transfer, Securities of the series may be surrendered for
exchange and notices, and demands to or upon the Company in respect of the
Securities of the series and this Indenture may be served;

                  (7) the period or periods within which, the price or prices at
which and the terms and conditions upon which Securities of the series may be
redeemed, in whole or in part, at the option of the Company;

                  (8) the obligation, if any, of the Company to redeem or
purchase Securities of the series pursuant to any sinking fund or analogous
provisions or upon the happening of a specified event or at the option of a
Holder thereof and the period or periods within which, the price or prices


                                      -28-

<PAGE>   36

at which and the terms and conditions upon which Securities of the series shall
be redeemed or purchased, in whole or in part, pursuant to such obligation;

                  (9) if other than denominations of $1,000 and any integral
multiple thereof, the denominations in which Securities of the series shall be
issuable;

                  (10) whether payment of principal of and premium, if any, and
interest, if any, on the Securities of the series shall be without deduction for
taxes, assessments or governmental charges paid by Holders of the series;

                  (11) the currency, currencies or currency units in which
payment of the principal of and any premium and interest on any Securities of
the series shall be payable if other than the currency of the United States of
America and the manner of determining the equivalent thereof in the currency of
the United States of America for purposes of the definition of "Outstanding" in
Section 101;

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

                  (13) if the principal of or any premium or interest on any
Securities of the series is to be payable, at the election of the Company or a
Holder thereof, in one or more currencies or currency units other than that or
those in which the Securities are stated to be payable, the currency, currencies
or currency units in which payment of the principal of and any premium and
interest on Securities of such series as to which such election is made shall be
payable, and the periods within which and the terms and conditions upon which
such election is to be made;

                  (14) if other than the principal amount thereof, the portion
of the principal amount of Securities of the series which shall be payable upon
declaration of acceleration of the Maturity thereof pursuant to Section 502 or
the method of determination thereof;

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

                  (16) any deletions from, modifications of or additions to the
Events of Default set forth in Section 501 or the covenants of the Company set
forth in Article Ten pertaining to the Securities of the series;


                                      -29-

<PAGE>   37


                  (17) if other than as provided in Sections 1302 and 1303, the
means of defeasance or covenant defeasance as may be specified for the
Securities of the series;

                  (18) if other than the Trustee, the identity of the Security
Registrar and any Paying Agent; and

                  (19) any other terms of the series (which terms shall not be
inconsistent with the provisions of this Indenture, except as permitted by
Section 901(4)).

         All Securities of any one series shall be substantially identical
except as to denomination and except as may otherwise be provided in or pursuant
to the Board Resolution referred to above and (subject to Section 303) set
forth, or determined in the manner provided, in the Officer's Certificate
referred to above or in any such indenture supplemental hereto. All Securities
of any one series need not be issued at the same time and, unless otherwise so
provided by the Company, a series may be reopened for issuances of additional
Securities of such series or to establish additional terms of such series of
Securities.

         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 increases in the aggregate principal amount of such series of
Securities and issuances of additional Securities of such series or for the
establishment of additional terms with respect to the Securities of such series.

         If any of the terms of any series of the Securities are established by
action taken by or pursuant to a Board Resolution, a copy of an appropriate
record of such action shall be certified by an authorized officer or other
authorized person on behalf of the Company and delivered to the Trustee at or
prior to the delivery of the Officer's Certificate setting forth, or providing
the manner for determining, the terms of the series.

         With respect to Securities of a series subject to a Periodic Offering,
such Board Resolution or Officer's Certificate may provide general terms for
Securities of such series and provide either that the specific terms of
particular Securities of such series shall be specified in a Company Order or
that such terms shall be determined by the Company, or one or more of the
Company's agents designated in an Officer's Certificate, in accordance with a
Company Order.

SECTION 302.  Currency; Denominations.

         Unless otherwise provided in or pursuant to this Indenture, the
principal of, any premium and interest on the Securities shall be payable in
Dollars. The Securities of each series shall be issuable only in registered form
without coupons in such denominations as shall be specified as contemplated by
Section 301. In the absence of any such specified denomination with respect to
the Securities of any series, the Securities of such series shall be issuable in
denominations of $1,000 and any integral multiple thereof.


                                      -30-

<PAGE>   38

SECTION 303.  Execution, Authentication, Delivery and Dating.

         The Securities shall be executed on behalf of the Company by its
Chairman of the Board, its Chief Executive Officer, its Chief Financial Officer,
its President or any Vice President and need not be attested. The signature of
any of these officers on the Securities may be manual or facsimile.

         Securities bearing the manual or facsimile signatures of individuals
who were at any time the proper officers of the Company shall bind the Company,
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, the Company may deliver Securities of any series executed by the
Company to the Trustee for authentication, together with a Company Order for the
authentication and delivery of such Securities, and the Trustee in accordance
with the Company Order shall authenticate and deliver such Securities; provided,
however, that in the case of Securities offered in a Periodic Offering, the
Trustee shall authenticate and deliver such Securities from time to time in
accordance with such other procedures (including, without limitation, the
receipt by the Trustee of oral or electronic instructions from the Company or
its duly authorized agents, thereafter promptly confirmed in writing) acceptable
to the Trustee as may be specified by or pursuant to a Company Order delivered
to the Trustee prior to the time of the first authentication of Securities of
such series. If the form or terms of the Securities of the series have been
established in or pursuant to one or more Board Resolutions or Officer's
Certificates as permitted by Sections 201 and 301, in authenticating such
Securities, and accepting the additional responsibilities under this Indenture
in relation to such Securities, the Trustee shall be entitled to receive, and
(subject to Section 601) shall be fully protected in relying upon, an Opinion of
Counsel stating,

                  (1) if the form or forms of such Securities have been
established by or pursuant to Board Resolution or Officer's Certificate as
permitted by Section 201, that such form or forms have been established in
conformity with the provisions of this Indenture;

                  (2) if the terms of such Securities have been, or in the case
of Securities of a series offered in a Periodic Offering, will be, established
by or pursuant to a Board Resolution or Officer's Certificate as permitted by
Section 301, that such terms have been, or in the case of Securities of a series
offered in a Periodic Offering, will be, established in conformity with the
provisions of this Indenture, subject, in the case of Securities of a series
offered in a Periodic Offering, to any conditions specified in such Opinion of
Counsel; and

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


                                      -31-

<PAGE>   39


general equity principles and provided that such counsel need express no opinion
as to the enforceability of any provision of this Indenture or such Securities
to the extent relating to (a) any failure to comply with requirements concerning
notices, relating to delay or omission to enforce rights or remedies of
purporting to waive or affect rights, claims, defenses or other benefits to the
extent that any of the same cannot be waived or so affected under applicable
law; (b) indemnities or exculpation from liability to the extent prohibited by
public policy or which might require indemnification for, or exculpation from
liability on account of, gross negligence, willful misconduct, fraud or
illegality of an indemnified or exculpated party; (c) agreements to agree with
respect to compensation of the Trustee; (d) requirements that all amendments,
waivers and terminations be in writing or to require disregard of any course of
dealing between the parties; or (e) an attempt to confer subject matter
jurisdiction in respect of bringing suit, enforcement of judgments or otherwise
on any federal court.

If such form or forms 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 or
immunities under the Securities and this Indenture or otherwise in a manner
which is not reasonably acceptable to the Trustee.

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

         The Trustee shall not be required to authenticate or to cause an
Authenticating Agent to authenticate any Securities if the issue of such
Securities pursuant to this Indenture will affect the Trustee's own rights,
duties or immunities under the Securities and this Indenture or otherwise in a
manner that is not reasonably acceptable to the Trustee or if the Trustee, being
advised by counsel, determines that such action may not lawfully be taken.

         With respect to Securities of a series offered in a Periodic Offering,
the Trustee may rely, as to the authorization by the Company of any of such
Securities, the form or forms and terms thereof and the legality, validity,
binding effect and enforceability thereof, upon the Opinion of Counsel and the
other documents delivered pursuant to Sections 201 and 301 and this Section, as
applicable, in connection with the first authentication of Securities 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
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


                                      -32-

<PAGE>   40


Security has been duly authenticated and delivered hereunder. Notwithstanding
the foregoing, if any Security shall have been authenticated and delivered
hereunder but never issued and sold by the Company, and the Company shall
deliver such Security to the Trustee for cancellation as provided in Section 309
for all purposes of this Indenture such Security shall be deemed never to have
been authenticated and delivered hereunder and shall never be entitled to the
benefits of this Indenture.

SECTION 304.  Temporary Securities.

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

         If temporary Securities of any series are issued, the Company will
cause Definitive Securities of that series to be prepared without unreasonable
delay. After the preparation of Definitive Securities of such series, the
temporary Securities of such series shall be exchangeable for Definitive
Securities of such series upon surrender of the temporary Securities of such
series at the office or agency of the Company maintained pursuant to Section
1002 for the purpose of exchanges of Securities of such series, without charge
to the Holder. Upon surrender for cancellation of any one or more temporary
Securities of any series the Company shall execute and the Trustee shall
authenticate and deliver in exchange therefor one or more Definitive Securities
of the same series, of any authorized denominations and of a like aggregate
principal amount and tenor. Until so exchanged the temporary Securities of any
series shall in all respects be entitled to the same benefits under this
Indenture as Definitive Securities of such series and tenor.

SECTION 305.  Registration, Registration of Transfer and Exchange.

         The Company shall cause to be kept at an office or agency of the
Company in The City of New York a register (the register maintained in such
office or in any other office or agency of the Company in a Place of Payment
being herein sometimes referred to as the "Security Register") in which, subject
to such reasonable regulations as it may prescribe, the Company shall provide
for the registration of Securities and of transfers of Securities. The Company
will prior to the issuance of any Securities hereunder, appoint the Trustee as
the initial "Security Registrar" for the purpose of registering Securities and
transfers of Securities as herein provided and its corporate trust office which,
at the date hereof, is located at 101 Barclay Street, New York, New York 10286
as the initial office or agency in The City of New York where the Security
Register will be maintained. The Company may at any time replace such Security
Registrar, change such office or agency or act as its own Security Registrar.
The Company will give prompt written notice to the Trustee of any change of the
Security Registrar or of the location of such office or agency.


                                      -33-

<PAGE>   41


         Upon surrender for registration of transfer of any Security of any
series at the office or agency of the Company maintained pursuant to Section
1002 for such purpose, the Company shall execute, and the Trustee shall
authenticate and deliver, in the name of the designated transferee or
transferees, one or more new Securities of the same series, of any authorized
denominations and of a like aggregate principal amount and tenor.

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

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

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

         No service charge shall be made for any registration of transfer or
exchange of Securities, but the Company may require payment of a sum sufficient
to cover any tax or other governmental charge that may be imposed in connection
with any registration of transfer or exchange of Securities, other than
exchanges pursuant to Section 304, 906 or 1107 not involving any transfer.

         The Company shall not be required (1) to issue, register the transfer
of or exchange Securities of any series during a period beginning at the opening
of business 15 days before the day of the mailing of a notice of redemption of
Securities of that series selected for redemption under Section 1103 and ending
at the close of business on the day of such mailing, or (2) to register the
transfer of or exchange any Security so selected for redemption in whole or in
part, except the unredeemed portion of any Security being redeemed in part.

         Notwithstanding any other provision in this Indenture and except as
otherwise specified as contemplated by Section 301, no Global Security may be
transferred to, or registered or exchanged for Securities registered in the name
of, any Person other than the Depositary for such Global Security or any nominee
thereof, and no such transfer may be registered, except as provided in this
paragraph. Every Security authenticated and delivered upon registration or
transfer of, or in exchange for or in lieu of, a Global Security shall be a
Global Security, except as provided in this paragraph. If (1) (A) the Depositary
for a Global Security notifies the Company that it is unwilling or unable to
continue as Depositary for such Global Security or ceases to be a clearing
agency registered under the Exchange Act, and (B) a successor Depositary is not
appointed by the Company within 90 days, (2) the Company determines in its sole
discretion that Securities of a series issued


                                      -34-

<PAGE>   42

in global form shall no longer be represented by a Global Security or (3) there
shall have occurred and be continuing a Default or Event of Default under the
Securities of such series, then such Global Security may be exchanged by such
Depositary for Definitive Securities of the same series, of any authorized
denomination and of a like aggregate principal amount and tenor, registered in
the names of, and the transfer of such Global Security or portion thereof may be
registered to, such Persons as such Depositary shall direct.

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

SECTION 306.  Mutilated, Destroyed, Lost and Stolen Securities.

         If any mutilated Security is surrendered to the Trustee, together with,
in proper cases, such security or indemnity as may be required by the Company or
the Trustee to save each of them and any agent of either of them harmless, the
Company shall execute and the Trustee shall authenticate and deliver in exchange
therefor a new Security of the same series and of like tenor and principal
amount and bearing a number not contemporaneously outstanding.

         If there shall be delivered to the Company and the Trustee (i) evidence
to their satisfaction of the destruction, loss or theft of any Security and (ii)
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 the
Company or the Trustee that such Security has been acquired by a bona fide
purchaser, the Company shall execute and the Trustee shall authenticate and
deliver, in lieu of any such destroyed, lost or stolen Security, a new Security
of the same series and of like tenor and principal amount and bearing a number
not contemporaneously outstanding.

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

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

         Every new Security of any series issued pursuant to this Section in
exchange for any mutilated Security or in lieu of any destroyed, lost or stolen
Security shall constitute an original additional contractual obligation of the
Company, 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.


                                      -35-

<PAGE>   43

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

SECTION 307.  Payment of Interest; Interest Rights Preserved.

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

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

                  (1) The Company may elect to make payment of any Defaulted
Interest to the Persons in whose names the Securities of such series (or their
respective Predecessor Securities) are registered at the close of business on a
Special Record Date for the payment of such Defaulted Interest, which shall be
fixed in the following manner. The Company shall notify the Trustee in writing
of the amount of Defaulted Interest proposed to be paid on each Security of such
series and the date of the proposed payment, and at the same time the Company
shall deposit with the Trustee an amount of money equal to the aggregate amount
proposed to be paid in respect of such Defaulted Interest or shall make
arrangements satisfactory to the Trustee for such deposit prior to the date of
the proposed payment, such money when deposited to be held in trust for the
benefit of the Persons entitled to such Defaulted Interest as in this Clause
provided. Thereupon the Trustee shall fix a Special Record Date for the payment
of such Defaulted Interest which shall be not more than 15 days and not less
than 10 days prior to the date of the proposed payment and not less than 10 days
after the receipt by the Trustee of the notice of the proposed payment. The
Trustee shall promptly notify the Company of such Special Record Date and, in
the name and at the expense of the Company, shall cause notice of the proposed
payment of such Defaulted Interest and the Special Record Date therefor to be
mailed, first-class postage prepaid, to each Holder of Securities of such series
at his address as it appears in the Security Register, not less than 10 days
prior to such Special Record Date. Notice of the proposed payment of such
Defaulted Interest and the Special Record Date therefor having been so mailed,
such Defaulted Interest shall be paid to the Persons in whose names the
Securities of such series (or their respective Predecessor Securities) are
registered at the close of business on such Special Record Date and shall no
longer be payable pursuant to the following Clause (2).

                  (2) The Company may make payment of any Defaulted Interest on
the Securities of any series in any other lawful manner not inconsistent with
the requirements of any securities


                                      -36-

<PAGE>   44

exchange on which such Securities may be listed, and upon such notice as may be
required by such exchange, if, after notice given by the Company to the Trustee
of the proposed payment pursuant to this Clause, such manner of payment shall be
deemed practicable by the Trustee.

         Subject to the foregoing provisions of this Section and Section 305,
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 308.  Persons Deemed Owners.

         Except as otherwise provided as contemplated by Section 301 with
respect to any series of Securities, prior to due presentment of a Security for
registration of transfer, the Company, the Trustee and any agent of the Company
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 any premium and (subject to Sections 305 and 307) any interest on such
Security and for all other purposes whatsoever, whether or not such Security be
overdue, and neither the Company, the Trustee nor any agent of the Company or
the Trustee shall be affected by notice to the contrary.

         No holder of any beneficial interest in any Global Security held on its
behalf by a Depositary shall have any rights under this Indenture with respect
to such Global Security, and such Depositary may be treated by the Company, the
Trustee, and any agent of the Company or the Trustee as the owner of such Global
Security for all purposes whatsoever. None of the Company, the Trustee nor any
agent of the Company or the Trustee 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 Global Security or for maintaining,
supervising or reviewing any records relating to such beneficial ownership
interests.

SECTION 309.  Cancellation.

         All Securities surrendered for payment, redemption, 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 shall be promptly canceled by it. The Company may at any time deliver to the
Trustee for cancellation any Securities previously authenticated and delivered
hereunder which the Company may have acquired in any manner whatsoever, and may
deliver to the Trustee (or to any other Person for delivery to the Trustee) for
cancellation any Securities previously authenticated hereunder which the Company
has not issued and sold, and all Securities so delivered shall be promptly
canceled by the Trustee. No Securities shall be authenticated in lieu of or in
exchange for any Securities canceled as provided in this Section, except as
expressly permitted by this Indenture. All canceled Securities held by the
Trustee shall be disposed of in accordance with its customary procedures.


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<PAGE>   45

SECTION 310.  Computation of Interest.

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

SECTION 311.  CUSIP Numbers.

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

                                  ARTICLE FOUR

                           SATISFACTION AND DISCHARGE

SECTION 401.  Satisfaction and Discharge of Indenture.

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

                  (1)      either

                           (A) all such Securities theretofore authenticated and
         delivered (other than (i) such Securities which have been destroyed,
         lost or stolen and which have been replaced or paid as provided in
         Section 306, and (ii) such Securities for whose payment money has
         theretofore been deposited in trust or segregated and held in trust by
         the Company and thereafter repaid to the Company or discharged from
         such trust, as provided in Section 1003) have been delivered to the
         Trustee for cancellation; or

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

                                    (i)     have become due and payable, or


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<PAGE>   46

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

                                    (iii) are to be called for redemption within
                  one year under arrangements satisfactory to the Trustee for
                  the giving of notice of redemption by the Trustee in the name,
                  and at the expense, of the Company,

and the Company in the case of (i), (ii) or (iii) above, has deposited or caused
to be deposited with the Trustee as trust funds in trust for the purpose an
amount of money in the currency or currency units in which such Securities are
payable sufficient to pay and discharge the entire indebtedness on such
Securities not theretofore delivered to the Trustee for cancellation, for
principal and any premium and interest 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;

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

                  (3) the Company 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 with respect to such Securities have been complied with.

         Notwithstanding the satisfaction and discharge of this Indenture with
respect to Securities of any series, (x) the obligations of the Company to the
Trustee under Section 607, the obligations of the Company to any Authenticating
Agent under Section 614 and the right of the Trustee to resign under Section 610
shall survive, and (y) if money shall have been deposited with the Trustee
pursuant to subclause (B) of Clause (1) of this Section, the obligations of the
Company and/or the Trustee under Sections 402, 606, 701 and 1002 and the last
paragraph of Section 1003 shall survive.

SECTION 402.  Application of Trust Money.

         Subject to the provisions of the last paragraph of Section 1003, all
money deposited with the Trustee pursuant to Section 401 shall be held in trust
and applied by it, in accordance with the provisions of the Securities and this
Indenture, to the payment, either directly or through any Paying Agent
(including the Company acting as its own Paying Agent) as the Trustee may
determine, to the Persons entitled thereto, of the principal and any premium and
interest for whose payment such money has been deposited with the Trustee.


                                      -39-

<PAGE>   47

                                  ARTICLE FIVE

                                    REMEDIES

SECTION 501. Events of Default.

         "Event of Default", wherever used herein with respect to Securities of
any series, means any one of the following events (whatever the reason for such
Event of Default and whether it shall be voluntary or involuntary 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):

                  (1) default in the payment of any interest upon any Security
of that series when it becomes due and payable, and continuance of such default
for a period of 60 days; or

                  (2) default in the payment of the principal of (or premium, if
any, on) any Security of that series at its Maturity; or

                  (3) default in the performance, or breach, of any term,
covenant or warranty of the Company in this Indenture (other than a term,
covenant or warranty a default in whose performance or whose breach is elsewhere
in this Section specifically dealt with or which has expressly been included in
this Indenture solely for the benefit of series of Securities other than that
series), and continuance of such default or breach for a period of 90 days after
there has been given, by registered or certified mail, to the Company by the
Trustee or to the Company and the Trustee by the Holders of at least 25% in
principal amount of the 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; or

                  (4) the Company pursuant to or within the meaning of any
Bankruptcy Law (A) commences a voluntary case, (B) consents to the entry of any
order for relief against it in an involuntary case, (C) consents to the
appointment of a Custodian of it or for all or substantially all of its
property, or (D) makes a general assignment for the benefit of its creditors; or

                  (5) a court of competent jurisdiction enters an order or
decree under any Bankruptcy Law that (A) is for relief against the Company in an
involuntary case, (B) appoints a Custodian of the Company or for all or
substantially all of its property, or (C) orders the liquidation of the Company;
and the order or decree remains unstayed and in effect for 90 days; or

                  (6) any other Event of Default provided as contemplated by
Section 301 with respect to Securities of that series.

SECTION 502.  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 (other than an Event of Default
described in clause (4) or (5) of Section 501), then in every such case the
Trustee or the Holders of not less than 25% in principal amount of the
Outstanding Securities of that series may declare the principal amount (or, if
any of the Securities of that series are Original Issue Discount Securities,
such portion of the principal amount of such Securities as may be specified in
the terms thereof) of all of the Securities of that series to be due and payable
immediately, by a notice in writing to the Company (and to the Trustee if given
by Holders),


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<PAGE>   48

and upon any such declaration such principal amount (or specified amount) shall
become immediately due and payable. Notwithstanding the foregoing, if an Event
of Default specified in clause (4) or (5) of Section 501 occurs, all Securities
of any series at the time Outstanding shall be due and payable immediately
without further action or notice.

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

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

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

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

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

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

         and

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

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

SECTION 503.  Collection of Indebtedness and Suits for Enforcement by Trustee.

         The Company covenants that if

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


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<PAGE>   49

                  (2) default is made in the payment of the principal of (or
premium, if any, on) any Security at the Maturity thereof,

the Company will, upon demand of the Trustee, pay to it, for the benefit of the
Holders of such Securities, the whole amount then due and payable on such
Securities for principal and any premium and interest and, to the extent that
payment of such interest shall be legally enforceable, interest on any overdue
principal and premium and on any overdue interest, at the rate or rates
prescribed therefor in such Securities, and, in addition thereto, such further
amount as shall be sufficient to cover the costs and expenses of collection,
including the reasonable compensation, expenses, disbursements and advances of
the Trustee, its agents and counsel.

         If the Company 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, may
prosecute such proceeding to judgment or final decree and may enforce the same
against the Company or any other obligor upon such Securities and collect the
moneys adjudged or decreed to be payable in the manner provided by law out of
the property of the Company or any other obligor upon such Securities, 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 504.  Trustee May File Proofs of Claim.

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

         No provision of this Indenture shall be deemed to authorize the Trustee
to authorize or consent to or accept or adopt on behalf of any Holder any plan
of reorganization, arrangement, adjustment or composition affecting the
Securities or the rights of any Holder thereof or to authorize the Trustee to
vote in respect of the claim of any Holder in any such proceeding; provided,
however,

                                      -42-

<PAGE>   50

that the Trustee may, on behalf of the Holders, vote for the election of a
trustee in bankruptcy or similar official and be a member of a creditors' or
other similar committee.

SECTION 505.  Trustee May Enforce Claims Without Possession of Securities.

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

SECTION 506.  Application of Money Collected.

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

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

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

         THIRD:  The balance, if any, to the Company.

SECTION 507.  Limitation on Suits.

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

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

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


                                      -43-

<PAGE>   51

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

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

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

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

SECTION 508.  Unconditional Right of Holders to Receive Principal, Premium and
Interest.

         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 any premium and (subject to Sections 305
and 307) interest on such Security on the respective Stated Maturities 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 509.  Restoration of Rights and Remedies.

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

SECTION 510.  Rights and Remedies Cumulative.

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


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<PAGE>   52

SECTION 511.  Delay or Omission Not Waiver.

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

SECTION 512.  Control by Holders.

         The Holders of a majority in aggregate principal amount of the
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 the Securities of such series; provided, however, that

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

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

                  (3) subject to the provisions of Section 601, the Trustee
shall have the right to decline to follow any such direction if the Trustee in
good faith shall determine that the proceeding so directed would involve the
Trustee in personal liability.

SECTION 513.  Waiver of Past Defaults.

         The Holders of a majority in aggregate principal amount of the
Outstanding Securities of any series may on behalf of the Holders of all the
Securities of such series waive any past default hereunder with respect to such
series and its consequences, except

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

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

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


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<PAGE>   53

SECTION 514.  Undertaking for Costs.

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

SECTION 515.  Waiver of Usury, Stay or Extension Laws.

         The Company 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 the Company (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.

                                   ARTICLE SIX

                                   THE TRUSTEE

SECTION 601.  Certain Duties and Responsibilities.

         The duties and responsibilities of the Trustee shall be as provided by
the Trust Indenture Act. No provision of this Indenture shall require the
Trustee to expend or risk its own funds or otherwise incur any financial
liability in the performance of any of its duties hereunder, or in the exercise
of any of its rights or powers, if it shall have reasonable grounds for
believing that repayment of such funds or adequate indemnity against such risk
or liability is not reasonably assured to it. Whether or not therein expressly
so provided, every provision of this Indenture relating to the conduct or
affecting the liability of or affording protection to the Trustee shall be
subject to the provisions of this Section.

SECTION 602.  Notice of Defaults.

         If a Default occurs and is continuing with respect to the Securities of
any series, the Trustee shall, within 90 days after it occurs, transmit, in the
manner and to the extent provided in Section 313(c) of the Trust Indenture Act,
notice of all uncured or unwaived Defaults actually known to it; provided,
however, that, except in the case of a Default in payment on the Securities of
any series, the Trustee may withhold the notice if and so long as the board of
directors, the executive committee or a trust committee of its directors and/or
its duly authorized officers in good faith determines that withholding such
notice is in the interests of Holders of Securities of such series; provided
further,


                                      -46-

<PAGE>   54


however, that, in the case of any default or breach of the character specified
in Section 501(3) with respect to the Securities of such series, no such notice
to Holders shall be given until at least 60 days after the occurrence thereof.

SECTION 603.  Certain Rights of Trustee.

         Subject to the provisions of Section 601:

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

                  (2) any request, direction, order or demand of the Company
mentioned herein shall be sufficiently evidenced by a Company Request or Company
Order (other than delivery of any Security to the Trustee for authentication and
delivery pursuant to Section 303, which shall be sufficiently evidenced as
provided therein) and any resolution of the Board of Directors shall be
sufficiently evidenced by a Board Resolution;

                  (3) 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;

                  (4) the Trustee may consult with counsel of its selection 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;

                  (5) the Trustee shall be under no obligation to exercise any
of the rights or powers vested in it by this Indenture at the request or
direction of any of the Holders pursuant to this Indenture, unless such Holders
shall have offered to the Trustee security or indemnity satisfactory to it
against the costs, expenses and liabilities which might be incurred by it in
compliance with such request or direction;

                  (6) the Trustee shall not be bound to make any investigation
into the facts or matters stated in any resolution, certificate, statement,
instrument, opinion, report, notice, request, direction, consent, order, bond,
debenture, note, other evidence of indebtedness or other paper or document but
the Trustee, in its discretion, may make such further inquiry or investigation
into such facts or matters as it may see fit;

                  (7) 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


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<PAGE>   55

responsible for any misconduct or negligence on the part of any agent or
attorney appointed with due care by it hereunder;

                  (8) the Trustee may request that the Company deliver an
Officer's Certificate setting forth the names of individuals and/or titles of
officers authorized at such time to take specified actions pursuant to this
Indenture, which Officer's Certificate may be signed by any person authorized to
sign an Officer's Certificate, including any person specified as so authorized
in any such certificate previously delivered and not superseded;

                  (9) the Trustee shall not be liable for any action taken,
suffered, or omitted to be taken 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;

                  (10) the Trustee shall not be deemed to have notice of any
Default or Event of Default unless a responsible officer of the Trustee has
actual knowledge thereof or unless written notice of any event which is in fact
such a default is received by the Trustee at the Corporate Trust Office of the
Trustee, and such notice references the Securities and this Indenture; and

                  (11) the rights, privileges, protections, immunities and
benefits given to the Trustee, including, without limitation, its right to be
indemnified, are extended to, and shall be enforceable by, the Trustee in each
of its capacities hereunder, and to each agent, custodian and other Person
employed to act hereunder.

SECTION 604.  Not Responsible for Recitals or Issuance of Securities.

         The recitals contained herein and in the Securities, except the
Trustee's certificates of authentication, shall be taken as the statements of
the Company, and the Trustee or any Authenticating Agent assumes no
responsibility for their correctness. Neither the Trustee nor any Authenticating
Agent makes any representations as to the validity or sufficiency of this
Indenture or of the Securities. The Trustee or any Authenticating Agent shall
not be accountable for the use or application by the Company of Securities or
the proceeds thereof.

SECTION 605.  May Hold Securities.

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


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<PAGE>   56


SECTION 606.  Money Held in Trust.

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

SECTION 607.  Compensation and Reimbursement.

         The Company agrees

                  (1) to pay to the Trustee from time to time such compensation
as shall be agreed in writing from time to time between the Company and 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);

                  (2) except as otherwise expressly provided herein, to
reimburse the 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 willful
misconduct; and

                  (3) to indemnify each of the Trustee and any predecessor
Trustee for, and to hold it harmless against, any and all loss, liability,
damages, claim or expense incurred without negligence or bad faith on its part,
arising out of or in connection with the acceptance or administration of the
trust or trusts hereunder, including the costs and expenses of defending itself
against any claim (whether asserted by the Company, a Holder or another Person)
or liability in connection with the exercise or performance of any of its powers
or duties hereunder, except those attributable to its negligence or willful
misconduct.

         The obligations of the Company under this Section to compensate the
Trustee and to pay or reimburse the Trustee for expenses, disbursements and
advances shall constitute additional indebtedness hereunder. Such additional
indebtedness shall be secured by a lien prior to that of the Securities upon all
property and funds held or collected by the Trustee as such, except funds held
in trust for the benefit of the Holders of particular Securities.

         Without limiting any rights available to the Trustee under applicable
law, when the Trustee incurs expenses or renders services in connection with an
Event of Default specified in Section 501(4) or Section 501(5), the expenses
(including the reasonable charges and expenses of its counsel) and the
compensation for such services are intended to constitute expenses of
administration under any applicable Bankruptcy Law.

         The provisions of this Section shall survive the satisfaction and
discharge of this Indenture and the defeasance of the Securities.


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<PAGE>   57

SECTION 608.  Disqualification; Conflicting Interests.

         If the Trustee has or shall acquire a conflicting interest within the
meaning of the Trust Indenture Act, the Trustee shall either eliminate such
interest or resign, to the extent and in the manner provided by, and subject to
the provisions of, the Trust Indenture Act and this Indenture.

SECTION 609.  Corporate Trustee Required; Eligibility.

         There shall at all times be one or more Trustees hereunder with respect
to the Securities of each series, at least one of which shall be a Person that
is eligible pursuant to the Trust Indenture Act to act as such and has a
combined capital and surplus required by the Trust Indenture Act. If such Person
publishes reports of condition at least annually, pursuant to law or to the
requirements of a supervising or examining authority, then for the purposes of
this Section, the combined capital and surplus of such Person shall be deemed to
be its combined capital and surplus as set forth in its most recent report of
condition so published. If at any time the Trustee shall cease to be eligible in
accordance with the provisions of this Section, it shall resign immediately in
the manner and with the effect hereinafter specified in this Article.

SECTION 610.  Resignation and Removal; Appointment of Successor.

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

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

         The Trustee may be removed at any time with respect to the Securities
of any series by Act of the Holders of a majority in principal amount of the
Outstanding Securities of such series, delivered to the Trustee and to the
Company. If the instrument of acceptance by a successor Trustee required by
Section 611 shall not have been delivered to the Trustee within 30 days after
the giving of such notice of removal, the Trustee being removed may petition, at
the expense of the Company, any court of competent jurisdiction for the
appointment of a successor Trustee with respect to the Securities of such
series.

         If at any time:

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


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<PAGE>   58

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

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

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

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

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

SECTION 611.  Acceptance of Appointment by Successor.

                  (a) In case of the appointment hereunder of a successor
Trustee with respect to all Securities, every such successor Trustee so
appointed shall execute, acknowledge and deliver to


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<PAGE>   59


the Company and to the retiring Trustee an instrument accepting such
appointment, and thereupon the resignation or removal of the retiring Trustee
shall become effective and such successor Trustee, without any further act, deed
or conveyance, shall become vested with all the rights, powers, trusts and
duties of the retiring Trustee; but, on the request of the Company or 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.

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

                  (c) Upon request of any such successor Trustee, the Company
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, 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.


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<PAGE>   60


SECTION 612.  Merger, Conversion, Consolidation or Succession to Business.

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

SECTION 613.  Preferential Collection of Claims Against Company.

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

SECTION 614.  Appointment of Authenticating Agent.

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

         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


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<PAGE>   61



consolidation to which such Authenticating Agent shall be a party, or any
corporation succeeding to all or substantially all of the corporate agency or
corporate trust business of such Authenticating Agent, shall continue to be an
Authenticating Agent, provided such corporation shall be otherwise eligible
under this Section, without the execution or filing of any paper or any further
act on the part of the Trustee or such Authenticating Agent.

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

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

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

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

                                          THE BANK OF NEW YORK,
                                          As Trustee


                                          By:
                                             -----------------------------------
                                                   As Authenticating Agent


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


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<PAGE>   62

                                  ARTICLE SEVEN

                HOLDERS' LISTS AND REPORTS BY TRUSTEE AND COMPANY

SECTION 701.  Company to Furnish Trustee Names and Addresses of Holders.

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

                  (1) semi-annually, not later than May 15 and November 15 in
each year, a list for each series of Securities, or upon such other dates as are
set forth in or pursuant to a Board Resolution, Officer's Certificate or
indenture supplemental hereto authorizing such Series, in such form as the
Trustee may reasonably require, of the names and addresses of the Holders of
Securities of such series as of the preceding April 30 or October 31, as the
case may be, and

                  (2) at such other times as the Trustee may request in writing,
within 30 days after the receipt by the Company of any such request, a list of
similar form and content as of a date not more than 15 days prior to the time
such list is furnished;

provided, however, that if and so long as the Trustee shall be the Security
Registrar for Securities of a series, no such list need be furnished with
respect to such series of Securities.

SECTION 702.  Preservation of Information; Communications to Holders.

         The Trustee shall comply with the obligations imposed upon it pursuant
to Section 312 of the Trust Indenture Act.

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

         Every Holder of Securities, by receiving and holding the same, agrees
with the Company and the Trustee that neither the Company nor the Trustee nor
any agent of either of them shall be held accountable by reason of any
disclosure of information as to the names and addresses of Holders made pursuant
to the Trust Indenture Act.

SECTION 703.  Reports by Trustee.

         The Trustee shall transmit to Holders such reports concerning the
Trustee and its actions under this Indenture as may be required pursuant to the
Trust Indenture Act at the times and in the manner provided pursuant thereto.

         Reports so required to be transmitted at stated intervals of not more
than 12 months shall be transmitted no later than July 15 in each calendar year
with respect to the 12-month period ending on the previous May 15, commencing
May 15, 2000.


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<PAGE>   63

         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 SEC and with the Company and other Persons
required to be furnished a copy of same pursuant to Sections 313(c) and 313(d)
of the Trust Indenture Act. The Company will notify the Trustee when any
Securities are listed on any stock exchange and of any delisting thereof.

SECTION 704.  Reports by Company.

         The Company shall:

                  (1) file with the Trustee, within 15 days after the Company is
required to file the same with the SEC, 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 SEC may from time to time by rules and regulations
prescribe) which the Company may be required to file with the SEC pursuant to
Section 13 or Section 15(d) of the Exchange Act; or, if the Company is not
required to file information, documents or reports pursuant to either of said
Sections, then it shall file with the Trustee and the SEC, in accordance with
rules and regulations prescribed from time to time by the SEC, 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;

                  (2) file with the Trustee and the SEC, in accordance with
rules and regulations prescribed from time to time by the SEC, such additional
information, documents and reports with respect to compliance by the Company
with the conditions and covenants of this Indenture as may be required from time
to time by such rules and regulations; and

                  (3) upon written request of a Holder, transmit by mail to such
Holder, as his name and address appear in the Security Register, such summaries
of any information, documents and reports required to be filed by the Company
pursuant to paragraphs (1) and (2) of this Section.

                  Delivery of such reports, information and documents to the
Trustee is for informational purposes only and the Trustee's receipt of such
shall not constitute constructive notice of any information contained therein or
determinable from information contained therein, including the Company's
compliance with any of its covenants hereunder (as to which the Trustee is
entitled to rely exclusively on Officer's Certificates).


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<PAGE>   64

                                  ARTICLE EIGHT

              CONSOLIDATION, MERGER, CONVEYANCE, TRANSFER OR LEASE

SECTION 801.  Company May Consolidate, Etc., Only on Certain Terms.

         Except as provided in Section 802, the Company shall not merge,
amalgamate or consolidate with or into any other Person (other than a merger or
amalgamation with any Subsidiary of the Company in which the Company is the
surviving entity) or sell, convey, lease, transfer or otherwise dispose of its
properties and assets as, or substantially as, an entirety to, any Person,
whether in a single transaction or series of related transactions, unless:

                  (1) (A) in the case of a merger, the Company is the surviving
entity, or (B) the Person formed by such consolidation or amalgamation or into
which the Company is merged or amalgamated or the Person which acquires by sale,
conveyance, transfer or disposition, or which leases, all or substantially all
of the properties and assets of the Company (i) is a corporation organized under
the laws of the United States, a state thereof or the District of Columbia, or
Canada or a province thereof and (ii) shall expressly assume, by an indenture
supplemental hereto, executed and delivered to the Trustee, in form reasonably
satisfactory to the Trustee, the due and punctual payment of the principal of
and any premium and interest on all the Securities and the performance or
observance of every other covenant and condition of this Indenture on the part
of the Company to be performed or observed;

                  (2) immediately before and immediately after giving effect to
such transaction, no Default or Event of Default has occurred and is continuing;
and

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

SECTION 802.  Conveyance to Eligible Partnership.

         The Company may sell, convey, transfer or lease all or substantially
all of its property to an Eligible Partnership if:

                  (a) the Eligible Partnership expressly assumes, jointly and
severally with the Company, by supplemental indenture satisfactory to the
Trustee, the due and punctual payment of principal of, premium, if any, and
interest of all the Securities, according to their tenor;

                  (b) the Eligible Partnership expressly assumes, jointly and
severally with the Company by supplemental indenture satisfactory to the
Trustee, the due and punctual performance and observance of all the covenants
and conditions of the Indenture to be performed by the Company;

                  (c) the Board of Directors determines that the transaction is
not adverse in any material respect to the interests of the holders of the
Securities, as evidenced by a Board Resolution delivered to the Trustee;


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<PAGE>   65

                  (d) immediately before and immediately after giving effect to
such transaction, no Default or Event of Default has occurred and is continuing;
and

                  (e) the Company has delivered to the Trustee an Officer's
Certificate and an Opinion of Counsel, each stating that such sale, conveyance,
transfer, assignment, lease or other disposition and the supplemental indenture
or indentures required in connection with such transaction comply with this
Section 802 and that all conditions precedent herein provided for relating to
such transaction have been complied with.

SECTION 803.  Successor Substituted.

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

         Upon any sale, conveyance, transfer, assignment, lease or other
disposition of all or substantially all of the property and assets of the
Company to an Eligible Partnership in accordance with Section 802, the Company
and the Eligible Partnership will, for all purposes of the Securities and this
Indenture, be considered one and the same Person and each reference therein or
herein to the term "Company" shall mean the Company and such Eligible
Partnership.

                                  ARTICLE NINE

                             SUPPLEMENTAL INDENTURES

SECTION 901.  Supplemental Indentures Without Consent of Holders.

         Without the consent of any Holders, the Company 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:

                  (1) to secure the Securities pursuant to the requirements of
Section 1006 or otherwise; or


                                      -58-
<PAGE>   66

                  (2) to evidence the succession of another Person to the
Company and the assumption by any such successor of the covenants of the Company
herein and in the Securities or to evidence the addition of an Eligible
Partnership pursuant to Section 802; or

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

                  (4) to add to, change or eliminate any of the provisions of
this Indenture in respect of one or more series of Securities; provided,
however, that any such addition, 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 which is entitled to the benefit of
such provision; or

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

                  (6) to cure any ambiguity, to correct or supplement any
provision herein which may be inconsistent with any other provision herein, to
comply with any applicable mandatory provisions of law or to make any other
provisions with respect to matters or questions arising under this Indenture,
provided that such action pursuant to this Clause (6) shall not adversely affect
the interests of the Holders of Securities of any series in any material
respect; or

                  (7) to add to, delete from or revise the conditions,
limitations and restrictions on the authorized amount, terms or purposes of
issue, authentication and delivery of Securities, as herein set forth; or

                  (8) to add any additional Events of Default with respect to
all or any series of Securities (as shall be specified in such supplemental
indenture); or

                  (9) 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 Article Thirteen, provided
that any such action shall not adversely affect the interests of any Holder of a
Security of such series or any other Security in any material respect; or

                  (10) to make provisions with respect to conversion or exchange
rights of Holders of Securities of any series; or

                  (11) to evidence and provide for the acceptance of appointment
hereunder by a successor Trustee or Authenticating Agent with respect to the
Securities of one or more series and to add to or change any of the provisions
of this Indenture as shall be necessary to provide for or


                                      -59-
<PAGE>   67

facilitate the administration of the trusts hereunder by more than one Trustee,
pursuant to the requirements of Section 611; or

                  (12) to modify, eliminate or add to the provisions of this
Indenture to such extent as shall be necessary to effect the qualification of
this Indenture under the Trust Indenture Act or under any similar federal
statute subsequently enacted, and to add to this Indenture such other provisions
as may be expressly required under the Trust Indenture Act.

SECTION 902.  Supplemental Indentures with Consent of Holders.

         With the consent of the Holders of a majority in aggregate principal
amount of the Outstanding Securities of all series affected by such supplemental
indenture (voting as one class), by Act of said Holders delivered to the Company
and the Trustee, the Company and the Trustee may enter into an indenture or
indentures supplemental hereto for the purpose of adding any provisions to or
changing in any manner or eliminating any of the provisions of this Indenture or
of modifying in any manner the rights of the Holders of Securities of such
series under this Indenture; provided, however, that no such supplemental
indenture shall, without the consent of the Holder of each Outstanding Security
affected thereby,

                  (1) change the Stated Maturity of the principal of, or any
installment of principal of or interest, if any, on, any Security, or reduce the
principal amount thereof or premium, if any, on or the rate of interest thereon,
or

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

                  (3) change any obligation of the Company, with respect to
Outstanding Securities of a series, to maintain an office or agency in the
places and for the purposes specified in Section 1002 for such series, or

                  (4) modify any of the provisions of this Section, Section 513
or Section 1008, except to increase any such percentage or to provide that
certain other provisions of this Indenture cannot be modified or waived without
the consent of the Holder of each Outstanding Security affected thereby;
provided, however, that this clause shall not be deemed to require the consent
of any Holder with respect to changes in the references to "the Trustee" and
concomitant changes in this Section, or the deletion of this proviso, in
accordance with the requirements of Sections 611, 901(7) and 901(11).

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


                                      -60-
<PAGE>   68

to such covenant or other provision, shall be deemed not to affect the rights
under this Indenture of the Holders of Securities of any other series.

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

SECTION 903.  Execution of Supplemental Indentures.

         In executing, or accepting the additional trusts created by, any
supplemental indenture permitted by this Article or the modifications thereby of
the trusts created by this Indenture, the Trustee shall be entitled to receive,
and (subject to Section 601) shall be fully protected in relying upon, an
Opinion of Counsel and an Officer's Certificate stating 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 904.  Effect of Supplemental Indentures.

         Upon the execution of any supplemental indenture under this Article,
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 905.  Conformity with Trust Indenture Act.

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

SECTION 906.  Reference in Securities to Supplemental Indentures.

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


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<PAGE>   69

                                   ARTICLE TEN

                                    COVENANTS

SECTION 1001.  Payment of Principal, Premium and Interest.

         The Company covenants and agrees for the benefit of each series of
Securities that it will duly and punctually pay the principal of and any premium
and interest on the Securities of that series in accordance with the terms of
the Securities and this Indenture.

SECTION 1002.  Maintenance of Office or Agency.

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

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

         Except as otherwise specified with respect to a series of Securities as
contemplated by Section 301, the Company hereby initially designates as the
Place of Payment for each series of Securities The City and State of New York,
and initially appoints the Trustee at its Corporate Trust Office as the
Company's office or agency for each such purpose in such city.

SECTION 1003.  Money for Securities Payments to Be Held in Trust.

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

         Whenever the Company shall have one or more Paying Agents for any
series of Securities, it will, on or prior to each due date of the principal of
or any premium or interest on any Securities


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<PAGE>   70

of that series, deposit with a Paying Agent a sum sufficient to pay such amount,
such sum to be held as provided by the Trust Indenture Act, and (unless such
Paying Agent is the Trustee) the Company will promptly notify the Trustee of its
action or failure so to act.

         The Company will cause each Paying Agent for any series of Securities
other than the Trustee to execute and deliver to the Trustee an instrument in
which such Paying Agent shall agree with the Trustee, subject to the provisions
of this Section, that such Paying Agent will (1) hold all sums held by it for
the payment of the principal of (and premium, if any) or interest, if any, on
Securities of that series 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; (2) give the Trustee notice of any default by the Company
(or any other obligor upon the Securities of that series) in the making of any
payment of principal (and premium, if any) or interest if any, on the Securities
of that series; and (3) during the continuance of any such default, upon the
written request of the Trustee, forthwith pay to the Trustee all sums held in
trust by such Paying Agent for payment in respect of the Securities of that
series.

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

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

SECTION 1004.  Statement by Officers as to Default.

         The Company will deliver to the Trustee, within 150 days after the end
of each fiscal year of the Company ending after the date hereof, an Officer's
Certificate, stating whether or not to the best knowledge of the signers thereof
the Company is in default in the performance and observance of any of the terms,
provisions and conditions of this Indenture (without regard to any period of


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<PAGE>   71
grace or requirement of notice provided hereunder) and, if the Company shall be
in default, specifying all such defaults and the nature and status thereof of
which they may have knowledge.

SECTION 1005.  Existence.

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

SECTION 1006.  Limitations on Liens.

         The Company will not, nor will it permit any Subsidiary to, issue,
create, assume or guarantee any Indebtedness of the character specified in
clause (i)(A) of the definition of the term "Indebtedness" secured by a Lien
upon any Principal Property of the Company or the Principal Property of any
Subsidiary of the Company or upon any shares of stock or indebtedness of any
Subsidiary that owns or leases any Principal Property (whether such Principal
Property, shares of stock or indebtedness is existing or owned on the date of
this Indenture or is hereafter created or acquired), without in any such case
making effective provision whereby all of the Securities Outstanding hereunder
shall be secured equally and ratably with, or prior to, such Indebtedness so
long as such Indebtedness shall be so secured. This restriction shall not apply
to (1) any Permitted Lien and (2) any Lien securing Exempted Indebtedness.

SECTION 1007.  Restriction of Sale-Leaseback Transaction.

         The Company will not, nor will it permit any Subsidiary to, engage in a
Sale-Leaseback Transaction with respect to any Principal Property unless:

                           (i) the Company or such Subsidiary would be entitled
         to incur Indebtedness of the character specified in clause (i)(A) of
         the definition of the term "Indebtedness" secured by a Lien on the
         Principal Property to be leased pursuant to such Sale-Leaseback
         Transaction in a principal amount at least equal to the Attributable
         Indebtedness from such Sale-Leaseback Transaction without securing the
         Securities pursuant to Section 1006; or

                           (ii) within a one-year period after the effective
         date of such Sale-Leaseback Transaction, the Company or such Subsidiary
         applies or causes to be applied an amount equal to not less than the
         Attributable Indebtedness of such Sale-Leaseback Transaction to (a) the
         voluntary defeasance or the repayment, redemption or retirement of the
         Securities of any series or other Funded Debt of the Company or any
         Subsidiary, (b) the acquisition, construction, development or
         improvement of any property used or useful in the business of the
         Company or any of its Subsidiaries, or (c) any combination of
         applications referred to sub-clauses (a) and (b) of this clause (ii).


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<PAGE>   72

         Notwithstanding the foregoing provisions of this Section 1007, the
Company may, and may permit any Subsidiary to, effect any Sale-Leaseback
Transaction that is not excepted by clauses (i) or (ii) of the immediately
preceding paragraph, provided that the Attributable Indebtedness from such
Sale-Leaseback Transaction, together with the aggregate principal amount of then
outstanding Indebtedness (other than the Securities) secured by Liens (other
than Permitted Liens) upon any property of the Company and its Subsidiaries and
all other Attributable Indebtedness of the Company and its Subsidiaries then
Outstanding (in each case not otherwise permitted by Section 1006 or this
Section 1007) does not exceed, at the time such Indebtedness is incurred or at
the time such Sale-Leaseback Transaction is created, Exempted Indebtedness of
the Company and its Subsidiaries.

SECTION 1008. Waiver of Certain Covenants.

         The Company may omit in any particular instance to comply with any
term, provision or condition set forth in Section 1005, 1006 or 1007 with
respect to the Securities of any series or any negative covenant with respect to
a series of Securities contained in the Board Resolution, Officer's Certificate
or supplemental indenture authorizing such series if before the time for such
compliance the Holders of at least a majority in aggregate principal amount of
the Outstanding Securities of all affected series (voting as one class) shall,
by Act of such Holders, either waive such compliance in such instance or
generally waive compliance with such term, provision or condition, but no such
waiver shall extend to or affect such term, provision or condition except to the
extent so expressly waived, and, until such waiver shall become effective, the
obligations of the Company and the duties of the Trustee in respect of any such
term, provision or condition shall remain in full force and effect.

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

SECTION 1009. Calculation of Original Issue Discount.

         The Company shall file with the Trustee promptly at the end of each
calendar year (i) a written notice specifying the amount of original issue
discount (including daily rates and accrual periods), if any, accrued on
Outstanding Securities as of the end of such year and (ii) such other specific
information relating to such original issue discount, if any, as may then be
relevant under the Internal Revenue Code of 1986, as amended from time to time.


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<PAGE>   73

                                 ARTICLE ELEVEN

                            REDEMPTION OF SECURITIES

SECTION 1101.  Applicability of Article.

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

SECTION 1102.  Election to Redeem; Notice to Trustee.

         The election of the Company to redeem any Securities shall be evidenced
by a Board Resolution or an Officer's Certificate. In case of any redemption at
the election of the Company of the Securities of any series, the Company shall,
at least 45 days prior to the Redemption Date fixed by the Company (unless a
shorter notice shall be satisfactory to the Trustee), notify the Trustee of such
Redemption Date, of the principal amount of Securities of such series to be
redeemed and, if applicable, of the tenor of the Securities to be redeemed. In
the case of any redemption of Securities (1) prior to the expiration of any
restriction on such redemption provided in the terms of such Securities or
elsewhere in this Indenture, or (2) pursuant to an election of the Company which
is subject to a condition specified in the terms of such Securities, the Company
shall furnish the Trustee with an Officer's Certificate evidencing compliance
with such restriction or condition.

SECTION 1103.  Selection by Trustee of Securities to be Redeemed.

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

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

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


                                      -66-
<PAGE>   74

SECTION 1104.  Notice of Redemption.

         Notice of redemption shall be given by first-class mail (if
international mail, by air mail), postage prepaid, mailed not less than 30 nor
more than 60 days prior to the Redemption Date, to each Holder of Securities to
be redeemed, at his address appearing in the Security Register.

         All notices of redemption shall state, unless otherwise provided with
respect to a series of Securities pursuant to Section 301:

                  (1) the Redemption Date,

                  (2) the Redemption Price,

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

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

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

                  (6) that the redemption is for a sinking fund, if such is the
case; and

                  (7) the CUSIP number or the Euroclear or CEDEL reference
number(s), if any, of such Securities to be redeemed (or any other numbers used
by a Depository to identify such Securities).

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

SECTION 1105.  Deposit of Redemption Price.

         On or prior to 11:00 a.m., New York City time, on any Redemption Date,
the Company shall deposit with the Trustee or with a Paying Agent (or, if the
Company is acting as its own Paying Agent, segregate and hold in trust as
provided in Section 1003) an amount of money sufficient to pay the Redemption
Price of, and (except if the Redemption Date shall be an Interest Payment Date)
accrued interest on, all the Securities which are to be redeemed on that date.

SECTION 1106.  Securities Payable on Redemption Date.

         Notice of redemption having been given as aforesaid, the Securities so
to be redeemed shall, on the Redemption Date, become due and payable at the
Redemption Price therein specified, and


                                      -67-
<PAGE>   75

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

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

SECTION 1107.  Securities Redeemed in Part.

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

                                 ARTICLE TWELVE

                                  SINKING FUNDS

SECTION 1201.  Applicability of Article.

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

         The minimum amount of any sinking fund payment provided for by the
terms of Securities of any series is herein referred to as a "mandatory sinking
fund payment", and any payment in excess of such minimum amount provided for by
the terms of Securities of any series is herein referred to as an "optional
sinking fund payment". If provided for by the terms of Securities of any series,
the cash amount of any sinking fund payment may be subject to reduction as
provided in Section 1202. 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.


                                      -68-
<PAGE>   76

SECTION 1202.  Satisfaction of Sinking Fund Payments with Securities.

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

SECTION 1203.  Redemption of Securities for Sinking Fund.

         Not less than 45 days prior to each sinking fund payment date for any
series of Securities (unless a shorter period shall be satisfactory to the
Trustee), the Company will deliver to the Trustee an Officer's Certificate
specifying the amount of the next ensuing sinking fund payment for that series
pursuant to the terms of that series, the portion thereof, if any, which is to
be satisfied by payment of cash and the portion thereof, if any, which is to be
satisfied by delivering and crediting Securities of that series pursuant to
Section 1202 and stating the basis for such credit and that such Securities have
not been previously so credited, and will also deliver to the Trustee any
Securities to be so delivered. Not less than 30 days before each such sinking
fund payment date the Trustee shall select the Securities to be redeemed upon
such sinking fund payment date in the manner specified in Section 1103 and cause
notice of the redemption thereof to be given in the name of and at the expense
of the Company in the manner provided in Section 1104. Such notice having been
duly given, the redemption of such Securities shall be made upon the terms and
in the manner stated in Sections 1106 and 1107.

                                ARTICLE THIRTEEN

                                   DEFEASANCE

SECTION 1301.  Applicability of Article.

         The provisions of this Article shall be applicable to each series of
Securities except as otherwise specified as contemplated by Section 301 for
Securities of such series.

SECTION 1302.  Legal Defeasance.

         In addition to discharge of the Indenture pursuant to Section 401, the
Company shall be deemed to have paid and discharged the entire indebtedness on
all the Securities of such a series on the 91st day after the date of the
deposit referred to in Clause (1) below, and the provisions of this Indenture
with respect to the Securities of such series shall no longer be in effect
(except as to


                                      -69-
<PAGE>   77

(i) rights of registration of transfer and exchange of Securities of such series
and the Company's right of optional redemption, if any, (ii) substitution of
mutilated, destroyed, lost or stolen Securities, (iii) rights of holders of
Securities to receive payments of principal thereof, premium, if any, and
interest thereon, upon the original stated due dates therefor or on the
specified redemption dates therefor (but not upon acceleration), and remaining
rights of the holders to receive mandatory sinking fund payments, if any, (iv)
the rights, obligations, duties and immunities of the Trustee hereunder, (v) the
rights of the holders of Securities of such series as beneficiaries hereof with
respect to the property so deposited with the Trustee payable to all or any of
them, and (vi) the obligations of the Company under Section 1002), and the
Trustee, at the expense of the Company, shall, upon a Company Request, execute
proper instruments acknowledging the same, if the conditions set forth below are
satisfied (hereinafter, "defeasance"):

                  (1) The Company has irrevocably deposited or caused to be
deposited with the Trustee as trust funds in trust, for the purposes of making
the following payments, specifically pledged as security for, and dedicated
solely to, the benefit of the Holders of the Securities of such series (i) cash
in an amount, or (ii) in the case of any series of Securities the payments on
which may only be made in legal coin or currency of the United States, U.S.
Government Obligations, maturing as to principal and interest at such times and
in such amounts as will insure the availability of cash, or (iii) a combination
thereof, sufficient, in the opinion of a nationally recognized firm of
independent public accountants expressed in a written certification thereof
delivered to the Trustee, to pay (A) the principal and interest and premium, if
any, on all Securities of such series on each date that such principal, interest
or premium, if any, is due and payable or on any Redemption Date established
pursuant to Clause (3) below, and (B) any mandatory sinking fund payments on the
dates on which such payments are due and payable in accordance with the terms of
the Indenture and the Securities of such series;

                  (2) The Company has delivered to the Trustee an Opinion of
Counsel based on the fact that (x) the Company has received from, or there has
been published by, the Internal Revenue Service a ruling, or (y) since the date
hereof, there has been a change in the applicable federal income tax law, in
either case to the effect that, and such opinion shall confirm that, the holders
of the Securities of such series will not recognize income, gain or loss for
federal income tax purposes as a result of such deposit and defeasance and will
be subject to federal income tax on the same amount and in the same manner and
at the same times, as would have been the case if such deposit and defeasance
had not occurred;

                  (3) If the Securities are to be redeemed prior to Stated
Maturity (other than from mandatory sinking fund payments or analogous
payments), notice of such redemption shall have been duly given pursuant to this
Indenture or provision therefor satisfactory to the Trustee shall have been
made;

                  (4) No Event of Default or event which with notice or lapse of
time or both would become an Event of Default shall have occurred and be
continuing on the date of such deposit; and


                                      -70-
<PAGE>   78

                  (5) The Company has delivered to the Trustee an Officer's
Certificate and an Opinion of Counsel, each stating that all conditions
precedent provided for relating to the defeasance contemplated by this provision
have been complied with.

         For this purpose, such defeasance means that the Company and any other
obligor upon the Securities of such series shall be deemed to have paid and
discharged the entire debt represented by the Securities of such series, which
shall thereafter be deemed to be "Outstanding" only for the purposes of Section
1304 and the rights and obligations referred to in Clauses (i) through (vi),
inclusive, of the first paragraph of this Section, and to have satisfied all its
other obligations under the Securities of such series and this Indenture insofar
as the Securities of such series are concerned.

SECTION 1303.  Covenant Defeasance.

         The Company and any other obligor, if any, shall be released on the
91st day after the date of the deposit referred to in Clause (1) below from its
obligations under Sections 704, 801, 1005, 1006 and 1007 with respect to the
Securities of any series and under the covenants specified in the Board
Resolution, Officer's Certificate or supplemental indenture authorizing a series
of Securities on and after the date the conditions set forth below are satisfied
(hereinafter, "covenant defeasance"), and the Securities of such series shall
thereafter be deemed to be not "Outstanding" for the purposes of any request,
demand, authorization, direction, notice, waiver, consent or declaration or
other action or Act of Holders (and the consequences of any thereof) in
connection with such covenants, but shall continue to be deemed Outstanding for
all other purposes hereunder. For this purpose, such covenant defeasance means
that, with respect to the Securities of such series, the Company may omit to
comply with and shall have no liability in respect of any term, condition or
limitation set forth in any such Section, whether directly or indirectly by
reason of any reference elsewhere herein to such Section or by reason of any
reference in such Section 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 501, but, except as specified above, the remainder of this
Indenture and the Securities of such series shall be unaffected thereby. The
following shall be the conditions to application of this Section 1303:

                  (1) The Company has irrevocably deposited or caused to be
deposited with the Trustee 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 the Securities of such series, (i) cash in an
amount, or (ii) in the case of any series of Securities the payments on which
may only be made in legal coin or currency of the United States, U.S. Government
Obligations, maturing as to principal and interest at such times and in such
amounts as will insure the availability of cash, or (iii) a combination thereof,
sufficient, in the opinion of a nationally recognized firm of independent public
accountants expressed in a written certification thereof delivered to the
Trustee, to pay (A) the principal and interest and premium, if any, on all
Securities of such series on each date that such principal, interest or premium,
if any, is due and payable or on any Redemption Date established pursuant to
Clause (2) below, and (B) any mandatory sinking fund payments on the day on
which


                                      -71-
<PAGE>   79

such payments are due and payable in accordance with the terms of the Indenture
and the Securities of such series;

                  (2) If the Securities are to be redeemed prior to Stated
Maturity (other than from mandatory sinking fund payments or analogous
payments), notice of such redemption shall have been duly given pursuant to this
Indenture or provision therefor satisfactory to the Trustee shall have been
made;

                  (3) No Event of Default or event which with notice or lapse of
time or both would become an Event of Default shall have occurred and be
continuing on the date of such deposit;

                  (4) The Company shall have delivered to the Trustee an Opinion
of Counsel which shall confirm that the holders of the Securities of such series
will not recognize income, gain or loss for federal income tax purposes as a
result of such deposit and covenant defeasance and will be subject to federal
income tax on the same amount and in the same manner and at the same times, as
would have been the case if such deposit and covenant defeasance had not
occurred; and

                  (5) The Company shall have delivered to the Trustee an
Officer's Certificate stating that all conditions precedent provided for
relating to the covenant defeasance contemplated by this provision have been
complied with.

SECTION 1304.  Application by Trustee of Funds Deposited for Payment of
Securities.

         Subject to the provisions of the last paragraph of Section 1003, all
moneys or U.S. Government Obligations deposited with the Trustee pursuant to
Section 1302 or 1303 (and all funds earned on such moneys or U.S. Government
Obligations) shall be held in trust and applied by it to the payment, either
directly or through any Paying Agent (including the Company acting as its own
Paying Agent), to the Holders of the particular Securities of such series for
the payment or redemption of which such moneys have been deposited with the
Trustee, of all sums due and to become due thereon for principal and interest;
but such money need not be segregated from other funds except to the extent
required by law. Subject to Sections 1302 and 1303, the Trustee promptly shall
pay to the Company upon written request any excess moneys held by them at any
time.

SECTION 1305.  Repayment to Company.

         The Trustee and any Paying Agent promptly shall pay or return to the
Company upon Company Request any money and U.S. Government Obligations held by
them at any time that are not required for the payment of the principal of and
any interest on the Securities of any series for which money or U.S. Government
Obligations have been deposited pursuant to Section 1302 or 1303.

         The provisions of the last paragraph of Section 1003 shall apply to any
money held by the Trustee or any Paying Agent under this Article that remains
unclaimed for two years after the


                                      -72-
<PAGE>   80

Maturity of any series of Securities for which money or U.S. Government
Obligations have been deposited pursuant to Section 1302 or 1303.

SECTION 1306.  Miscellaneous.

         Prior to depositing any U.S. Government Obligations pursuant to Section
1302 or 1303, the Company shall enter into such agreement with the Trustee as
the Company and the Trustee mutually determine to be appropriate to provide that
the Trustee shall be indemnified from and against any tax, fee or other charge
imposed on or assessed against the U.S. Government Obligations so deposited
pursuant to Section 1302 or 1303 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 Outstanding Securities.

                                ARTICLE FOURTEEN

                       REPAYMENT AT THE OPTION OF HOLDERS

         Securities of any series that are repayable at the option of the
Holders thereof before their Stated Maturity shall be repaid in accordance with
the terms of the Securities of such series. The repayment of any principal
amount of Securities pursuant to such option of the Holder to require repayment
of Securities before their Stated Maturity, for purposes of Section 309, shall
not operate as a payment, redemption or satisfaction of the Indebtedness
represented by such Securities unless and until the Company, at its option,
shall deliver or surrender the same to the Trustee with a directive that such
Securities be canceled. Notwithstanding anything to the contrary contained in
this Article Fourteen, in connection with any repayment of Securities, the
Company may arrange for the purchase of any Securities by an agreement with one
or more investment bankers or other purchasers to purchase such Securities by
paying to the Holders of such Securities on or before the close of business on
the repayment date an amount not less than the repayment price payable by the
Company on repayment of such Securities, and the obligation of the Company to
pay the repayment price of such Securities shall be satisfied and discharged to
the extent such payment is so paid by such purchasers.

                                 ARTICLE FIFTEEN

                        MEETINGS OF HOLDERS OF SECURITIES

SECTION 1501.  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 to make, give or take any
request, demand, authorization, direction, notice, consent, waiver or other Act
provided by this Indenture to be made, given or taken by Holders of Securities
of such series.


                                      -73-
<PAGE>   81

SECTION 1502.  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 1501, to be held at such time
and at such place in the Borough of Manhattan, The City of New York 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 106, not less than 21 nor more than 180 days prior to
the date fixed for the meeting.

         (b) In case at any time the Company (by or pursuant to a Board
Resolution or Officer's Certificate) or the Holders of at least 10% in principal
amount of the 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 1501, by written request setting forth in
reasonable detail the action proposed to be taken at the meeting, and the
Trustee shall not have mailed notice of such meeting within 21 days after
receipt of such request (whichever shall be required pursuant to Section 106) or
shall not thereafter proceed to cause the meeting to be held as provided herein,
then the Company or the Holders of Securities of such series in the amount above
specified, as the case may be, may determine the time and the place in the
Borough of Manhattan, The City of New York for such meeting and may call such
meeting for such purposes by giving notice thereof as provided in clause (a) of
this Section 1502.

SECTION 1503.  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 (1) a Holder of one or more Outstanding Securities of
such series, or (2) 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 the Company and its counsel.

SECTION 1504.  Quorum; Action.

         The presence of Persons holding Outstanding Securities of a series in
an aggregate principal amount sufficient to take action upon the matter for
which such meeting was called shall constitute a quorum for a meeting of Holders
of Securities of such series. In the absence of a 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
adjourned meeting. Notice of the reconvening of any adjourned meeting shall be
given as provided in Section 1502(a), except that such notice need be given only
once not less than five days prior to the date on which the meeting is scheduled
to be reconvened. Notice of


                                      -74-
<PAGE>   82

the reconvening of an adjourned meeting shall state expressly the percentage, as
provided above, of the principal amount of the Outstanding Securities of such
series that shall constitute a quorum.

         A resolution presented to a meeting or adjourned meeting duly
reconvened at which a quorum is present as aforesaid may be adopted only by the
affirmative vote of the Holders of a majority in principal amount of the
Outstanding Securities of that series; provided, however, that except as limited
by the proviso to Section 902, any resolution with respect to any request,
demand, authorization, direction, notice, consent, waiver or other Act which
this Indentures expressly provides may be made, given or taken by the Holders of
a specified percentage, which is less or more than a majority in principal
amount of the Outstanding Securities of a series may be adopted at a meeting or
an adjourned meeting duly reconvened and at which a quorum is present as
aforesaid by the affirmative vote of the Holders of such specified percentage in
principal amount of the Outstanding Securities of such series.

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

SECTION 1505.  Determination of Voting Rights; Conduct and Adjournment of
Meetings.

         (a) Notwithstanding any other provisions of this Indenture, the Trustee
may make such reasonable regulations as it may deem advisable for any meeting of
Holders of Securities of such 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 104 and the
appointment of any proxy shall be proved in executing the proxy witnessed or
guaranteed by any trust company, bank or banker authorized by Section 104 to
certify to the holding of Bearer Securities. 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 104 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 the
Company, or by Holders of Securities as provided in Section 1502(b), in which
case the Company 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 the
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 Securities of
such series held or represented by him;


                                      -75-
<PAGE>   83

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.

         (d) Any meeting of Holders of Securities of any series duly called
pursuant to Section 1502 at which a quorum is present may be adjourned from time
to time by Persons entitled to vote a majority in principal amount of the
Outstanding Securities of such series represented at the meeting; and the
meeting may be held as so adjourned without further notice.

SECTION 1506.  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
the 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 triplicate of all votes cast at the meeting. A record 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
facts setting forth a copy of the notice of the meeting and showing that said
notice was given as provided in Section 1502 and, if applicable, Section 1504.
Such record shall be signed and verified by the affidavits of the permanent
chairman and secretary of the meeting and a copy of same shall be delivered to
the Company 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.


                                      -76-

<PAGE>   84


                                   ----------


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

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

                                 SANTA FE SNYDER CORPORATION


                                 By:  /s/ David L. Hicks
                                    -------------------------------------------
                                      David L. Hicks
                                      Vice President -- Law and General Counsel


                                 THE BANK OF NEW YORK, as Trustee


                                 By: /s/ Van K. Brown
                                    -------------------------------------------
                                 Name: Van K. Brown
                                 Title: Assistant Vice President

<PAGE>   1



                                                                    EXHIBIT 4.2

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



                          SANTA FE SNYDER CORPORATION

                                     ISSUER

                                      AND


                             THE BANK OF NEW YORK,

                                    TRUSTEE

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

                          FIRST SUPPLEMENTAL INDENTURE

                           DATED AS OF JUNE 14, 1999

                                       TO

                                   INDENTURE

                            DATED AS OF JUNE 1, 1999

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

                          8.05% SENIOR NOTES DUE 2004

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



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



<PAGE>   2


         FIRST SUPPLEMENTAL INDENTURE, dated as of June 14, 1999 (herein called
the "First Supplemental Indenture"), between SANTA FE SNYDER CORPORATION, a
Delaware corporation (herein called the "Company"), having its principal office
at 1616 South Voss Road, 10th Floor, Houston, Texas 77057 and THE BANK OF NEW
YORK, a New York banking corporation, as trustee under the Indenture referred
to below (herein called the "Trustee").

                            RECITALS OF THE COMPANY:

         WHEREAS, the Company has heretofore executed and delivered to the
Trustee the Indenture, dated as of June 1, 1999 (herein called the "Original
Indenture"), providing for the issuance from time to time of one or more series
of the Company's unsecured debentures, notes or other evidences of indebtedness
(herein called the "Securities"), the terms of which are to be determined as
set forth in Section 301 of the Original Indenture; and

         WHEREAS, Section 901 of the Original Indenture provides, among other
things, that the Company and the Trustee may enter into indentures supplemental
to the Original Indenture for, among other things, the purpose of establishing
the form or terms of Securities of any series as permitted by Sections 201 and
301 of the Original Indenture; and

         WHEREAS, the Company desires to create a series of the Securities in
an aggregate principal amount of $125,000,000, which series shall be designated
the 8.05% Senior Notes Due 2004 (the "Notes"), and all action on the part of
the Company necessary to authorize the issuance of the Notes under the Original
Indenture and this First Supplemental Indenture has been duly taken; and

         WHEREAS, all acts and things necessary to make the Notes, when
executed by the Company and completed, authenticated and delivered by the
Trustee as provided in the Original Indenture and this First Supplemental
Indenture, the valid and binding obligations of the Company and to constitute
these presents a valid and binding supplemental indenture and agreement
according to its terms, have been done and performed;

         NOW, THEREFORE, THIS FIRST SUPPLEMENTAL INDENTURE WITNESSETH:

         That in consideration of the premises and the issuance of the Notes,
the Company covenants and agrees with the Trustee, for the equal and
proportionate benefit of all Holders of the Notes, as follows:

                                   ARTICLE I

               TERMS AND ISSUANCE OF 8.05% SENIOR NOTES DUE 2004

         SECTION I.1 Issue of Notes. A series of Securities which shall be
designated the "8.05% Senior Notes Due 2004" shall be executed, authenticated
and delivered in accordance with the provisions of, and shall in all respects
be subject to, the terms, conditions and covenants of the Original Indenture,
including without limitation the terms set forth in this First Supplemental
Indenture (including the form of Notes referred to in Section 1.02 hereof). The
aggregate principal amount of Notes which may be authenticated and delivered
under the Original Indenture shall not, except as permitted by the provisions
of the Original Indenture (which shall include, without

                                      -1-

<PAGE>   3


limitation, the terms of Section 301 permitting the Company to reopen this
series of Securities for additional Securities of this series), exceed
$125,000,000. The entire amount of Notes may forthwith be executed by the
Company and delivered to the Trustee and shall be authenticated by the Trustee
and delivered to or upon the order of the Company pursuant to Section 303 of
the Indenture.

         SECTION I.2 Forms of Notes and Authentication Certificate. The Notes
initially shall be issuable in the form of one or more Global Securities,
registered in the name of the Depositary or its nominee. The Depository Trust
Company shall be the Depositary for such Global Securities. The forms and terms
of the Notes and the Trustee's certificate of authentication shall be
substantially as set forth on Exhibit A hereto.

                                   ARTICLE II

                                 MISCELLANEOUS

         SECTION II.1 Execution as Supplemental Indenture. This First
Supplemental Indenture is executed and shall be construed as an indenture
supplemental to the Original Indenture and, as provided in the Original
Indenture, this First Supplemental Indenture forms a part thereof. Except as
herein expressly otherwise defined, the use of the terms and expressions herein
is in accordance with the definitions, uses and constructions contained in the
Original Indenture.

         SECTION II.2 Responsibility for Recitals, Etc. The recitals herein and
in the Notes (except in the Trustee's certificate of authentication) shall be
taken as the statements of the Company, and the Trustee assumes no
responsibility for the correctness thereof. The Trustee makes no
representations as to the validity or sufficiency of this First Supplemental
Indenture or of the Notes. The Trustee shall not be accountable for the use or
application by the Company of the Notes or of the proceeds thereof.

         SECTION II.3 Provisions Binding on Company's Successors. All the
covenants, stipulations, promises and agreements in this First Supplemental
Indenture contained by the Company shall bind its successors and assigns
whether so expressed or not.

         SECTION II.4 New York Contract. THIS FIRST SUPPLEMENTAL INDENTURE AND
EACH NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE
STATE OF NEW YORK WITHOUT REGARD TO CONFLICTS OF LAWS AND PRINCIPLES THEREOF.

         SECTION II.5 Execution and Counterparts. This First Supplemental
Indenture may be executed with counterpart signature pages or in any number of
counterparts, each of which shall be an original but such counterparts shall
together constitute but one and the same instrument.

         SECTION II.6 Capitalized Terms. Capitalized terms not otherwise
defined in this First Supplemental Indenture shall have the respective meanings
assigned to them in the Original Indenture.

                                      -2-

<PAGE>   4


         IN WITNESS WHEREOF, said SANTA FE SNYDER CORPORATION has caused this
First Supplemental Indenture to be executed in its corporate name by its
Chairman of the Board or its President or one of its Vice Presidents, and said
THE BANK OF NEW YORK has caused this First Supplemental Indenture to be
executed in its corporate name by one of its Authorized Officers as of June 14,
1999.


                                       SANTA FE SNYDER CORPORATION


                                       By:   /s/ David L. Hicks
                                           -------------------------------------
                                           Name: David L. Hicks
                                           Title: Vice President -- Law and
                                                  General Counsel


                                       THE BANK OF NEW YORK, AS TRUSTEE


                                       By:  /s/ Van K. Brown
                                           -------------------------------------
                                           Name: Van K. Brown
                                           Title: Assistant Vice President

                                      -3-

<PAGE>   5


                                                                      EXHIBIT A

         [THIS SECURITY IS A GLOBAL SECURITY WITHIN THE MEANING OF THE
INDENTURE HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF A DEPOSITARY
OR A NOMINEE THEREOF. THIS SECURITY MAY NOT BE TRANSFERRED TO, OR REGISTERED OR
EXCHANGED FOR SECURITIES REGISTERED IN THE NAME OF, ANY PERSON OTHER THAN THE
DEPOSITARY OR A NOMINEE THEREOF AND NO SUCH TRANSFER MAY BE REGISTERED, EXCEPT
IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE. EVERY SECURITY
AUTHENTICATED AND DELIVERED UPON REGISTRATION OF, TRANSFER OF, OR IN EXCHANGE
FOR OR IN LIEU OF, THIS SECURITY SHALL BE A GLOBAL SECURITY SUBJECT TO THE
FOREGOING, EXCEPT IN SUCH LIMITED CIRCUMSTANCES.

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

                          SANTA FE SNYDER CORPORATION

                           8.05% SENIOR NOTE DUE 2004

NO.                                                                U.S.$
CUSIP No. 80218K AA 3


- ------------------
* Insert in Global Securities only.

                                      A-1

<PAGE>   6


         SANTA FE SNYDER CORPORATION, a corporation duly incorporated and
existing under the laws of Delaware (herein called the "Company," which term
includes any successor Person under the Indenture hereinafter referred to), for
value received, hereby promises to pay to ____________________________________,
or registered assigns, the principal sum of _____________________ United States
Dollars on June 15, 2004, and to pay interest thereon from June 15, 1999, or
from the most recent Interest Payment Date to which interest has been paid or
duly provided for, semi-annually on June 15 and December 15 in each year,
commencing December 15, 1999, at the rate of 8.05% per annum, until the
principal hereof is paid or made available for payment. The interest so
payable, and punctually paid or duly provided for, on any Interest Payment Date
will, as provided in such Indenture, be paid to the Person in whose name this
Security (or one or more Predecessor Securities) is registered at the close of
business on the Regular Record Date for such interest, which shall be June 1 or
December 1 (whether or not a Business Day), as the case may be, next preceding
such Interest Payment Date. Any such interest not so punctually paid or duly
provided for shall forthwith cease to be payable to the Holder on such Regular
Record Date and shall either be paid to the Person in whose name this Security
(or one or more Predecessor Securities) is registered at the close of business
on a Special Record Date for the payment of such Defaulted Interest to be fixed
by the Trustee, notice of which shall be given to Holders of Securities of this
series not less than 10 days prior to such Special Record Date, or be paid at
such time in any other lawful manner not inconsistent with the requirements of
any securities exchange on which the Securities of this series may be listed,
and upon such notice as may be required by such exchange, all as more fully
provided in such Indenture.

         [Payment of the principal of and premium, if any, and interest on this
Security will be made by transfer of immediately available funds to a bank
account in New York, New York designated by the Holder in such coin or currency
of the United States of America as at the time of payment is legal tender for
payment of public and private debts.]*

         [Payment of the principal of (and premium, if any) and interest on
this Security will be made at the office or agency of the Company maintained
for that purpose in the Borough of Manhattan, The City of New York, in such
coin or currency of the United States of America as at the time of payment is
legal tender for payment of public and private debts, or at such other offices
or agencies as the Company may designate; provided, however, that payment of
interest may be made at the option of the Company by check mailed to the
addresses of the Persons entitled thereto as such addresses shall appear in the
Security Register.]**

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


- --------
*    Insert in Global Securities only.
**   Insert in Definitive Securities only.

                                      A-2

<PAGE>   7


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

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


Dated:

                                       SANTA FE SNYDER CORPORATION


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

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

                                       THE BANK OF NEW YORK,
                                       AS TRUSTEE


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

                                      A-3

<PAGE>   8


                          SANTA FE SNYDER CORPORATION
                           8.05% SENIOR NOTE DUE 2004

         This Security is one of a duly authorized issue of Securities of the
Company (the "Securities"), issued and to be issued in one or more series under
an Indenture dated as of June 1, 1999 (the "Indenture"), between the Company
and The Bank of New York, as Trustee (the "Trustee," which term includes any
successor trustee under the Indenture), to which Indenture and all indentures
supplemental thereto reference is hereby made for a statement of the respective
rights, limitations of rights, obligations, duties and immunities thereunder of
the Company, the Trustee and the Holders of the Securities and of the terms
upon which the Securities are, and are to be, authenticated and delivered. As
provided in the Indenture, the Securities may be issued in one or more series,
which different series may be issued in various aggregate principal amounts,
may mature at different times, may bear interest, if any, at different rates,
may be subject to different redemption provisions, if any, may be subject to
different sinking, purchase or analogous funds, if any, may be subject to
different covenants and Events of Default and may otherwise vary as in the
Indenture provided or permitted. This Security is one of a series of Securities
designated on the face hereof limited (subject to the terms of the Indenture)
in aggregate principal amount to U.S.
$125,000,000.

         The Securities of this series are redeemable, upon not less than 30
nor more than 60 days' notice by mail, as a whole or in part, at the option of
the Company at any time at a Redemption Price equal to the sum of (i) 100% of
the principal amount thereof, (ii) the applicable Make-Whole Premium as
determined by an Independent Investment Banker, and (iii) accrued and unpaid
interest thereon to the date of redemption, but interest installments whose
Stated Maturity is on or prior to such date of redemption will be payable to
the Holders of such Securities, or one or more Predecessor Securities, of
record at the close of business on the relevant Record Dates referred to on the
face hereof, all as provided in the Indenture.

         "Adjusted Treasury Rate" means, with respect to any Redemption Date,
the Comparable Treasury Yield, plus 0.25%.

         "Comparable Treasury Issue" means the United States Treasury security
selected by an Independent Investment Banker that has a constant maturity that
corresponds to the period from the Redemption Date to the Stated Maturity of
the Securities of this series to be redeemed (the "Remaining Term"), calculated
to the nearest 1/12th of a year.

         "Comparable Treasury Yield" means the rate per annum equal to the
weekly average yield to maturity of the Comparable Treasury Issue. The weekly
average yields to maturity of United States Treasury securities will be
determined as of the third Business Day preceding such Redemption Date and by
reference to the most recent statistical release (or any successor release)
published by the Federal Reserve Bank of New York and designated "H.15 (519)
Selected Interest Rates" or any successor release. If the H.15 statistical
release sets forth a weekly average yield for United States Treasury securities
having a constant maturity that is the same as the Remaining Term, then the
Comparable Treasury Yield will be equal to such weekly average yield. In all
other cases, the Comparable Treasury Yield will be calculated by interpolation,
on a straight-line basis, between the weekly average yields on the United
States Treasury securities that have a constant maturity

                                      A-4

<PAGE>   9


closest to and greater than the Remaining Term and the United States Treasury
securities that have a constant maturity closest to and less than the Remaining
Term (in each case as set forth in the H.15 statistical release or any
successor release). Any weekly average yields calculated by interpolation will
be rounded to the nearest 1/100th of 1%, with any figure of 1/200th of 1% or
above being rounded upward. If weekly average yields for United States Treasury
securities are not available in the H.15 statistical release or otherwise, then
the Comparable Treasury Yield will be calculated by interpolation of comparable
rates selected by the Independent Investment Banker.

         "Independent Investment Banker" means an independent investment
banking institution of national reputation appointed by the Company for the
purpose of calculating the Make-Whole Premium payable in respect of the
redemption of any Securities of this series, or any portion thereof. If the
Company fails to appoint such an independent investment banking institution at
least 45 days prior to an applicable Redemption Date, or if the independent
investment banking institution so appointed is unwilling or unable to calculate
the applicable Make-Whole Premium, the calculation will be made by Salomon
Smith Barney Inc.; provided, however, that in such case if Salomon Smith Barney
Inc. is unwilling or unable to make the calculation, the Company will appoint
an independent investment banking institution to make such calculation.

         "Make-Whole Premium" means an amount with respect to any Securities of
this series to be redeemed, equal to the excess, if any, of (i) the sum of the
present values, calculated as of the applicable Redemption Date, of the
remaining scheduled payments of principal and interest thereon (excluding any
accrued interest for any period prior to the Redemption Date) discounted to the
date of redemption on a semi-annual basis (assuming a 360-day year consisting
of twelve 30-day months) at the Adjusted Treasury Rate, over (ii) the principal
amount of the Securities being redeemed. The present values shall be calculated
in accordance with generally accepted principles of financial analysis.

         Notwithstanding Section 1104 of the Indenture, the notice of
redemption with respect to the foregoing redemption need not set forth the
Redemption Price but only the manner of calculation thereof.

         Promptly after the calculation thereof, the Company shall give the
Trustee written notice of the Redemption Price for the foregoing redemption.

         In the event of redemption of this Security in part only, a new
Security or Securities of this series and of like tenor for the unredeemed
portion hereof will be issued in the name of the Holder hereof upon the
cancellation hereof.

         If an Event of Default with respect to the Securities of this series
shall occur and be continuing, the principal of the Securities of this series
may be declared due and payable in the manner and with the effect provided in
the Indenture.

         The Indenture permits, with certain exceptions as therein provided,
the amendment thereof and the modification of the rights and obligations of the
Company and the rights of the Holders of the Securities of each series to be
affected under the Indenture at any time by the Company and the Trustee with
the consent of the Holders of a majority in aggregate principal amount of the
Outstanding Securities of all series to be affected (voting as one class). The
Indenture also contains

                                      A-5

<PAGE>   10


provisions permitting the Holders of a majority in aggregate principal amount
of the Outstanding Securities of all affected series (voting as one class), on
behalf of the Holders of all Securities of such series, to waive compliance by
the Company with certain provisions of the Indenture. The Indenture permits,
with certain exceptions as therein provided, the Holders of a majority in
aggregate principal amount of Securities of any series then Outstanding to
waive past defaults under the Indenture with respect to such series and their
consequences. Any such consent or waiver by the Holder of this Security shall
be conclusive and binding upon such Holder and upon all future Holders of this
Security and of any Security issued upon the registration of transfer hereof or
in exchange herefor or in lieu hereof, whether or not notation of such consent
or waiver is made upon this Security.

         As provided in and subject to the provisions of the Indenture, the
Holder of this Security shall not have the right to institute any proceeding
with respect to the Indenture or for the appointment of a receiver or trustee
or for any other remedy thereunder, unless such Holder shall have previously
given the Trustee written notice of a continuing Event of Default with respect
to the Securities of this series, the Holders of not less than 25% in principal
amount of the Securities of this series at the time Outstanding shall have made
written request to the Trustee to institute proceedings in respect of such
Event of Default as Trustee and offered the Trustee reasonable indemnity and
the Trustee shall not have received from the Holders of a majority in principal
amount of the Securities of this series at the time Outstanding a direction
inconsistent with such request, and shall have failed to institute any such
proceeding, for 60 days after receipt of such notice, request and offer of
indemnity. The foregoing shall not apply to any suit instituted by the Holder
of this Security for the enforcement of any payment of principal hereof or
interest hereon on or after the respective due dates expressed herein.

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

         [This Global Security or portion hereof may not be exchanged for
Definitive Securities except in the limited circumstances provided in the
Indenture.

         The holders of beneficial interests in this Global Security will not
be entitled to receive physical delivery of Definitive Securities except as
described in the Indenture and will not be considered the Holders hereof for
any purpose under the Indenture.]*

- -----------------------
*        Insert in Global Securities only.

                                      A-6

<PAGE>   11


         [As provided in the Indenture and subject to certain limitations set
forth, the transfer of this Security is registerable in the Security Register,
upon surrender of this Security for registration of transfer at the office or
agency of the Company in the Borough of Manhattan, The City of New York or at
such other offices or agencies as the Company may designate, duly endorsed by,
or accompanied by a written instrument of transfer in form satisfactory to the
Company and the Security Registrar duly executed by, the Holder hereof or his
attorney duly authorized in writing, and thereupon one or more new Securities
of this series and of like tenor, of authorized denominations and for a like
aggregate principal amount, will be issued to the designated transferee or
transferees.]**

         The Securities of this series are issuable only in registered form,
without coupons, in denominations of U.S. $1,000 and any integral multiple
thereof. As provided in the Indenture and subject to certain limitations
therein set forth, the Securities of this series are exchangeable for a like
aggregate principal amount of Securities of this series and of like tenor of a
different authorized denomination, as requested by the Holder surrendering the
same.

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

         Prior to due presentment of this Security for registration of
transfer, the Company, the Trustee and any agent of the Company or the Trustee
may treat the Person in whose name this Security is registered as the owner
hereof for all purposes, whether or not this Security be overdue, and neither
the Company, the Trustee nor any such agent shall be affected by notice to the
contrary.

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

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

         THIS SECURITY SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH
THE LAWS OF THE STATE OF NEW YORK.


- --------
**       Insert in Definitive Securities only.

                                      A-7

<PAGE>   12


         All terms used in this Security which are defined in the Indenture
shall have the meanings assigned to them in the Indenture.

                                      A-8

<PAGE>   13


         [FOR VALUE RECEIVED, the undersigned hereby sell(s), assign(s) and
transfer(s) unto

- --------------------------------------------------------------------------------
            (Please Print or Typewrite Name and Address of Assignee)

the within instrument of SANTA FE SNYDER CORPORATION and does hereby
irrevocably constitute and appoint ________________________ Attorney to
transfer said instrument on the books of the within-named Company, with full
power of substitution in the premises.

Please Insert Social Security or
Other Identifying Number of Assignee:

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

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

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


- --------
**       Insert in Definitive Securities only.

                                      A-9

<PAGE>   1
                                                                    EXHIBIT 5.1

                     [LETTERHEAD OF ANDREWS & KURTH L.L.P.]





                                                             June 15, 1999

Board of Directors
Santa Fe Snyder Corporation
1616 S. Voss, 10th Floor
Houston, Texas 77056

Ladies and Gentlemen:

     We have acted as counsel to Santa Fe Snyder Corporation, a Delaware
corporation (the "Company"), in connection with (i) the preparation and filing
with the Securities and Exchange Commission (the "Commission") under the
Securities Act of 1933, as amended (the "Act"), of the Registration Statement
on Form S-3 filed by the Company with the Commission on May 11, 1999 (the
"Registration Statement"), for the purpose of registering under the Act, among
other securities, senior debt securities of the Company; and (ii) the
preparation of a prospectus supplement dated June 11, 1999 (the "Prospectus
Supplement") in connection with the issuance of $125,000,000 aggregate
principal amount of 8.05% Senior Notes Due 2004 of the Company (the "Senior
Notes").

     In connection with this opinion, we have examined originals or copies,
certified or otherwise identified to our satisfaction, of (i) the Registration
Statement, including the form of prospectus included therein and the documents
incorporated by reference therein, and the Prospectus Supplement, (ii) the
Company's Restated Certificate of Incorporation and By-laws, each as amended to
date, and (iii) the Indenture relating to the Company's senior debt securities,
dated as of June 1, 1999, and the form of First Supplemental Indenture thereto,
to be dated as of June 14, 1999 (collectively, the "Indenture"), between the
Company and The Bank of New York, as trustee. We have also examined originals
or copies, certified or otherwise identified to our satisfaction, of such other
documents, certificates and records as we have deemed necessary or appropriate,
and we have made such investigations of law as we have deemed appropriate, as a
basis for the opinions expressed below.

     In rendering the opinions expressed below, we have assumed and have not
verified (i) the genuineness of the signatures on all documents that we have
examined, (ii) the conformity to the originals of all documents supplied to us
as certified or photostatic or faxed copies, (iii) the authenticity of the
originals of such documents and (iv) as to the forms of all documents in
respect of which forms were filed with the Commission or incorporated by
reference as exhibits to the Registration Statement, the conformity in all
material respects of such documents to the forms



<PAGE>   2




Santa Fe Snyder Corporation
June 15, 1999
Page 2


thereof that we have examined. In conducting our examination of documents
executed by parties other than the Company, we have assumed that such parties
had the power, corporate or other, to enter into and perform all obligations
thereunder and have also assumed the due authorization by all requisite action,
corporate or other, and execution and delivery by such parties of such
documents and that such documents constitute valid and binding obligations of
such parties. We have assumed that the Senior Notes and the Indenture, when
executed, will be executed in substantially the forms reviewed by us. In
addition, we have assumed the receipt by each person to whom a Senior Note is
to be issued (collectively, the "Senior Note Holders") of a certificate for
such Senior Note or of a global certificate by the Depository Trust Company,
acting as agent, and the payment for the Senior Note so acquired, in accordance
with the Registration Statement, and that the Senior Notes are issued and sold
to the Senior Note Holders in accordance with the Registration Statement. As to
any facts material to the opinions expressed herein which were not
independently established or verified, we have relied upon oral or written
statements and representations of officers, trustees and other representatives
of the Company and others. We have further assumed that the Registration
Statement and any amendments thereto (including post-effective amendments) have
become effective.

     Based upon and subject to the foregoing and to other qualifications and
limitations set forth herein, we are of the opinion that when (i) the Indenture
has been duly qualified under the Trust Indenture Act of 1939, as amended, and
has been duly executed and delivered, and (ii) the Senior Notes have been duly
executed, authenticated, issued and delivered in accordance with the Indenture
and delivered and paid for as contemplated by the Registration Statement:

           (A)   the Indenture will be a valid and legally binding instrument
                 of the Company, and

           (B)   the Senior Notes will be legally issued and will constitute
                 valid and legally binding obligations of the Company.

     The opinion expressed above with respect to the legally binding effect of
the Indenture and the Senior Notes is subject, as to enforceability, to
applicable bankruptcy, reorganization, insolvency, fraudulent transfer,
moratorium and other laws affecting creditors' rights generally from time to
time and to general principles of equity, (regardless of whether considered in
a proceeding in equity or at law); commercial reasonableness and
unconscionability and an implied covenant of good faith and fair dealing; the
power of the courts to award damages in lieu of equitable remedies; and the
limitations imposed by rights to indemnification and contribution thereunder
may be limited by Federal or state securities laws or public policy underlying
such laws on any right to indemnification or contribution contained in the
Indenture and the Senior Notes.



<PAGE>   3




Santa Fe Snyder Corporation
June 15, 1999
Page 3

     We express no opinion other than as to the federal laws of the United
States of America to the extent specifically referred to herein, the laws of
the State of New York and the Delaware General Corporation Law (without regard
to the decisional case law of Delaware). We hereby consent to the reference to
us under the caption "Legal Opinions" in the Prospectus dated June 4, 1999 and
under the caption "Legal Matters" in the Prospectus Supplement dated June 11,
1999 which form a part of the Registration Statement. In giving this consent,
we do not thereby admit that we are within the category of persons whose
consent is required under Section 7 of the Securities Act of 1933, as amended,
or under the rules and regulations of the Commission relating thereto.


                                               Very truly yours,

                                               /s/ Andrews & Kurth L.L.P.




1198/1173/2677/2716



<PAGE>   1
                                                                    Exhibit 12.1


                   Computation of Pro Forma Ratio of Earnings
                             to Fixed Charges After
                      Adjustment for Issuance of Debentures

<TABLE>
<CAPTION>

                                                                      Three
                                                         Year         Months
                                                        Ended         Ended
                                                       12/31/98      3/31/99
                                                      ----------    ----------
<S>                                                   <C>           <C>

Earnings (loss)                                        $  (145.3)   $    (11.2)
                                                      ----------    ----------
Fixed Charges                                               22.0           6.8
    Adjustment:
      Estimated net decrease in
        interest expense from refinancing                   (2.0)         (0.5)
                                                      ----------    -----------
        Total pro forma fixed charges                 $     20.0    $      6.3
                                                      ----------    -----------

Pro forma ratio of loss to fixed charges                     N/A           N/A

Amount by which fixed
    charges exceed earnings (loss)                    $   (165.3)   $    (17.5)


</TABLE>




            Computation of Supplemental Pro Forma Ratio of Earnings
                             to Fixed Charges After
                      Adjustment for Issuance of Debentures
<TABLE>
<CAPTION>

                                                                      Three
                                                          Year        Months
                                                         Ended        Ended
                                                        12/31/98      3/31/99
                                                      ----------    -----------
<S>                                                  <C>           <C>

Earnings (loss)                                           (193.4)   $   (25.4)
                                                      ----------    -----------
Fixed Charges                                               37.7         11.2
    Adjustment:
      Estimated net decrease in
        interest expense from refinancing                   (2.0)        (0.5)
                                                      ----------    -----------
        Total supplemental pro forma fixed charges    $     35.7    $    10.7
                                                      ----------    -----------

Supplemental pro forma ratio of loss to fixed charges        N/A          N/A

Amount by which fixed
    charges exceed earnings (loss)                    $   (229.1)   $   (36.1)


</TABLE>




<PAGE>   1
                                                                    EXHIBIT 25.1
================================================================================

                                    FORM T-1

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                            STATEMENT OF ELIGIBILITY
                   UNDER THE TRUST INDENTURE ACT OF 1939 OF A
                    CORPORATION DESIGNATED TO ACT AS TRUSTEE

                      CHECK IF AN APPLICATION TO DETERMINE
                      ELIGIBILITY OF A TRUSTEE PURSUANT TO
                              SECTION 305(b)(2) [ ]

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

                              THE BANK OF NEW YORK
               (Exact name of trustee as specified in its charter)

New York                                                  13-5160382
(State of incorporation                                   (I.R.S. employer
if not a U.S. national bank)                              identification no.)

One Wall Street, New York, N.Y.                           10286
(Address of principal executive offices)                  (Zip code)

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


                           Santa Fe Synder Corporation
               (Exact name of obligor as specified in its charter)

Delaware                                                  36-2722169
(State or other jurisdiction of                           (I.R.S. employer
incorporation or organization)                            identification no.)


1616 South Voss Road                                      77057
Houston, Texas                                            (Zip code)
(Address of principal executive offices)

                             Senior Debt Securities
                       (Title of the indenture securities)

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


<PAGE>   2



1.       General information. Furnish the following information as to the
Trustee:

         (a) NAME AND ADDRESS OF EACH EXAMINING OR SUPERVISING AUTHORITY TO
             WHICH IT IS SUBJECT.

<TABLE>
<CAPTION>
- ---------------------------------------------------------------- --------------------------------------------

                       Name                                                        Address
- ---------------------------------------------------------------- --------------------------------------------
<S>                                                              <C>
        Superintendent of Banks of the State of New York         2 Rector Street, New York, N.Y.  10006,
                                                                 and Albany, N.Y. 12203

        Federal Reserve Bank of New York                         33 Liberty Plaza, New York, N.Y.  10045

        Federal Deposit Insurance Corporation                    Washington, D.C.  20429

        New York Clearing House Association                      New York, New York   10005
</TABLE>

         (b) WHETHER IT IS AUTHORIZED TO EXERCISE CORPORATE TRUST POWERS.

         Yes.

2.       AFFILIATIONS WITH OBLIGOR.

         IF THE OBLIGOR IS AN AFFILIATE OF THE TRUSTEE, DESCRIBE EACH SUCH
AFFILIATION.

         None.

16.      LIST OF EXHIBITS.

         EXHIBITS IDENTIFIED IN PARENTHESES BELOW, ON FILE WITH THE COMMISSION,
         ARE INCORPORATED HEREIN BY REFERENCE AS AN EXHIBIT HERETO, PURSUANT TO
         RULE 7A-29 UNDER THE TRUST INDENTURE ACT OF 1939 (THE "ACT") AND 17
         C.F.R. 229.10(d).

         1.       A copy of the Organization Certificate of The Bank of New York
                  (formerly Irving Trust Company) as now in effect, which
                  contains the authority to commence business and a grant of
                  powers to exercise corporate trust powers. (Exhibit 1 to
                  Amendment No. 1 to Form T-1 filed with Registration Statement
                  No. 33-6215, Exhibits 1a and 1b to Form T-1 filed with
                  Registration Statement No. 33-21672 and Exhibit 1 to Form T-1
                  filed with Registration Statement No.
                  33-29637.)

         4.       A copy of the existing By-laws of the Trustee. (Exhibit 4 to
                  Form T-1 filed with Registration Statement No. 33-31019.)

         6.       The consent of the Trustee required by Section 321(b) of the
                  Act. (Exhibit 6 to Form T-1 filed with Registration Statement
                  No. 33-44051.)

         7.       A copy of the latest report of condition of the Trustee
                  published pursuant to law or to the requirements of its
                  supervising or examining authority.


                                      -2-
<PAGE>   3


                                    SIGNATURE


         Pursuant to the requirements of the Act, the Trustee, The Bank of New
York, a corporation organized and existing under the laws of the State of New
York, has duly caused this statement of eligibility to be signed on its behalf
by the undersigned, thereunto duly authorized, all in The City of New York, and
State of New York, on the 7th day of June, 1999.


                                        THE BANK OF NEW YORK


                                        By:      \S\ MARY LAGUMINA
                                           -----------------------------------
                                              Name: MARY LAGUMINA
                                              Title:  ASSISTANT VICE PRESIDENT


                                      -3-
<PAGE>   4
- --------------------------------------------------------------------------------

                       Consolidated Report of Condition of

                              THE BANK OF NEW YORK

                    of One Wall Street, New York, N.Y. 10286
                     And Foreign and Domestic Subsidiaries,
a member of the Federal Reserve System, at the close of business March 31, 1999,
published in accordance with a call made by the Federal Reserve Bank of this
District pursuant to the provisions of the Federal Reserve Act.

<TABLE>
<CAPTION>
                                                                  Dollar Amounts
                                                                   In Thousands
<S>                                                                <C>
ASSETS
Cash and balances due from depository institutions:
   Noninterest-bearing balances and currency and coin ........     $  4,508,742
   Interest-bearing balances .................................        4,425,071
Securities:
   Held-to-maturity securities ...............................          836,304
   Available-for-sale securities .............................        4,047,851
Federal funds sold and Securities purchased under
   agreements to resell ......................................        1,743,269
Loans and lease financing receivables:
   Loans and leases, net of unearned
     income...............39,349,679
   LESS: Allowance for loan and
     lease losses............603,025
   LESS: Allocated transfer risk
     reserve..................15,906
   Loans and leases, net of unearned income,
     allowance, and reserve ..................................       38,730,748
Trading Assets ...............................................        1,571,372
Premises and fixed assets (including capitalized
   leases) ...................................................          685,674
Other real estate owned ......................................           10,331
Investments in unconsolidated subsidiaries and
   associated companies ......................................          182,449
Customers' liability to this bank on acceptances
   outstanding ...............................................        1,184,822
Intangible assets ............................................        1,129,636
Other assets .................................................        2,632,309
                                                                   ------------
Total assets .................................................     $ 61,688,578
                                                                   ============
</TABLE>


<PAGE>   5

<TABLE>
<S>                                                                <C>
LIABILITIES
Deposits:
   In domestic offices .......................................     $ 25,731,036
   Noninterest-bearing.......................10,252,589
   Interest-bearing..........................15,478,447
   In foreign offices, Edge and Agreement
     subsidiaries, and IBFs ..................................       18,756,302
   Noninterest-bearing..........................111,386
   Interest-bearing..........................18,644,916
Federal funds purchased and Securities sold under
   agreements to repurchase ..................................        3,276,362
Demand notes issued to the U.S.Treasury ......................          230,671
Trading liabilities ..........................................        1,554,493
Other borrowed money:
   With remaining maturity of one year or less ...............        1,154,502
   With remaining maturity of more than one year
     through three years .....................................              465
   With remaining maturity of more than three years ..........           31,080
Bank's liability on acceptances executed and
   outstanding ...............................................        1,185,364
Subordinated notes and debentures ............................        1,308,000
Other liabilities ............................................        2,743,590
                                                                   ------------
Total liabilities ............................................       55,971,865
                                                                   ============
EQUITY CAPITAL
Common stock .................................................        1,135,284
Surplus ......................................................          764,443
Undivided profits and capital reserves .......................        3,807,697
Net unrealized holding gains (losses) on
   available-for-sale securities .............................           44,106
Cumulative foreign currency translation adjustments
                                                                        (34,817)
Total equity capital .........................................        5,716,713
                                                                   ------------
Total liabilities and equity capital .........................     $ 61,688,578
                                                                   ============
</TABLE>


<PAGE>   6


         I, Thomas J. Mastro, Senior Vice President and Comptroller of the
above-named bank do hereby declare that this Report of Condition has been
prepared in conformance with the instructions issued by the Board of Governors
of the Federal Reserve System and is true to the best of my knowledge and
belief.


                                                          Thomas J. Mastro

         We, the undersigned directors, attest to the correctness of this Report
of Condition and declare that it has been examined by us and to the best of our
knowledge and belief has been prepared in conformance with the instructions
issued by the Board of Governors of the Federal Reserve System and is true and
correct.

Thomas A. Reyni          }
Alan R. Griffith         }                Directors
Gerald L. Hassell        }

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


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