HADSON CORP
SC 13D/A, 1994-01-18
NATURAL GAS TRANSMISSION
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                    SECURITIES AND EXCHANGE COMMISSION
                          WASHINGTON, D.C.  20549
                                               
                            -------------------


                               SCHEDULE 13D

                 Under the Securities Exchange Act of 1934


                           (Amendment No. ____)


                            Hadson Corporation                            
- - --------------------------------------------------------------------------
                             (Name of Issuer)

            Common Stock                          40501V101
- - -----------------------------------   -----------------------------------
   (Title of class of securities)                (CUSIP number)

         Thomas P. Donahue          
       4900 Renaissance Tower
          1201 Elm Street
          Dallas, TX 75270
           (214) 745-4606                           12/14/93              
- - -----------------------------------   -----------------------------------
(Name, address and telephone number       (Date of event which requires
  of person authorized to receive           filing of this statement)
    notices and communications)

If the filing person has previously filed a statement on Schedule 13G to
report the acquisition which is the subject of this Schedule 13D, and is
filing this schedule because of Rule 13d-1(b)(3) or (4), check the
following box   [x].


Check the following box if a fee is being paid with the statement   [_].

(A fee is not required only if the reporting person: (1) has a previous
statement on file reporting beneficial ownership of more than five percent
of the class of securities described in Item 1; and (2) has filed no
amendment subsequent thereto reporting beneficial ownership of five
percent or less of such class.)  (See Rule 13d-7.)





























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 CUSIP No.      40501V101                                13D - Page 2


  1   NAME OF REPORTING PERSON:              The Prudential Insurance
                                             Company of America

      S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE 
      PERSON:  22-1211670

  2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:        (a)   [_]
                                                               (b)   [x]

  3   SEC USE ONLY

  4   SOURCE OF FUNDS:*      00


  5   CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED       [_]
      PURSUANT TO ITEM 2(d) OR 2(e):

  6   CITIZENSHIP OR PLACE OF                A mutual life insurance
      ORGANIZATION:                          company organized under the
                                             laws of New Jersey

   NUMBER OF    7   SOLE VOTING POWER:                  6,317,944
    SHARES
 BENEFICIALLY   8   SHARED VOTING POWER:                --
   OWNED BY

     EACH       9   SOLE DISPOSITIVE POWER:             1,329,763
   REPORTING
  PERSON WITH   10  SHARED DISPOSITIVE POWER:           --


  11  AGGREGATE AMOUNT BENEFICIALLY OWNED BY REPORTING
      PERSON:                                          6,317,944

  12  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES         [_]
      CERTAIN SHARES:*


  13  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11):          24.6%

  14  TYPE OF REPORTING PERSON:*             BD, IC, IA































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     ITEM 1.   SECURITY AND ISSUER.
     ------    -------------------

               This Schedule 13D relates to the shares of common stock, par
     value $.01 per share (the "Common Stock") of Hadson Corporation (the
     "Issuer"), which has its principal executive office at 101 Park
     Avenue, Suite 1400, Oklahoma City, Oklahoma 73102.  The Prudential
     Insurance Company of America, a New Jersey mutual insurance
     corporation, for itself and its affiliates Pruco Life Insurance
     Company and PruSupply, Inc. (collectively "Prudential"), previously
     filed a statement on Schedule 13G dated February 9, 1990, as amended
     on February 11, 1991, February 11, 1992, and February 5, 1993,
     reflecting its beneficial ownership of securities of the Issuer.


     ITEM 2.   IDENTITY AND BACKGROUND.
     ------    -----------------------

               This statement is filed by Prudential which has its
     principal business and principal office at 751 Broad Street, Newark,
     New Jersey 07102.  The following lists the current directors (the
     "Directors") of The Prudential Insurance Company of America and their
     principal occupations; unless otherwise noted, their business address
     is 751 Broad Street, Newark, New Jersey 07102:

               James G. Affleck has been retired since 1984.

               Robert E. Beck has been retired since 1992.

               William W. Boeschenstein is the Chairman of the Board and
          Chief Executive Officer of Owens-Corning Fiberglass Corporation,
          Fiberglass














































          
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          Tower, Toledo, Ohio 43659, which engages in the business of
          manufacturing fiberglass products.

               Robert J. Boutillier has been retired since 1982.

               James E. Burke has been retired since 1990.

               Brendan T. Byrne is a partner in the law firm of Carella,
          Byrne, Bain, Gillfillan, Cecchi & Stewart, 6 Becker Farm Road,
          Roseland, New Jersey 07066.

               Lisle C. Carter, Jr. is a partner in the law firm of Verner
          Liipfert, Bernhard, McPherson & Hand, Chartered, 1307 Fourth
          Street, S.W., Washington, D.C. 20024.

               Carolyne K. Davis is a Health Care Advisor at the accounting
          firm of Ernst & Young, 1200 Nineteenth Street, N.W. Washington,
          D.C. 20036.

               William H. Gray, III is President and Chief Executive
          Officer of the United Negro College Fund, Inc., 500 East 62nd
          Street, New York, New York 10021.

               Jon F. Hanson is Chairman of Hampshire Management Co., 235
          Moore Street, Suite 200, Hackensack, New Jersey 07601.

               Allen F. Jacobson has been retired since 1991.

               Garnett L. Keith, Jr. is Vice Chairman of Prudential.

               James C. Kellogg is a partner in the law firm of Townley &
          Updike, 405 Lexington Avenue, New York, New York  10174.















































          
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               Burton G. Malkiel is a Professor of Economics at Princeton
          University, 110 Fisher Hall, Prospect Avenue, Princeton
          University, Princeton, New Jersey 08544.

               John R. Opel has been retired since 1993.

               Donald E. Procknow has been retired since 1986.

               Robert H. Schaeberle is Chairman Emeritus of Nabisco Brands,
          Inc., 200 DeForest Avenue, East Hanover, New Jersey 077936.

               Richard M. Thomson is Chairman of the Board and Chief
          Executive Officer of the Toronto-Dominion Bank, Toronto-Dominion
          Centre, Toronto, Ontario M5K 1A2, Canada.

               P. Roy Vagelos, M.D. is Chairman and Chief Executive Officer
          of Merck & Co., Inc., a manufacturer of pharmaceuticals, 126 East
          Lincoln Avenue, Rahway, New Jersey 07065.

               Stanley C. Van Ness is an attorney at the law firm of Picco
          Mack Herbert Kennedy Jaffe Perrella and Yoskin, One State Street
          Square, Suite 1000, Trenton, New Jersey 08607.

               Paul A. Volcker is Chairman of James D. Wolfenshohn, Inc.,
          599 Lexington Avenue, New York, New York 10022.

               Robert C. Winters is Chairman of the Board, President and
          Chief Executive Officer of Prudential.


















































          
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               The following persons are the current executive officers
     (the "Officers") and controlling persons of Prudential, and each of
     their business addresses is 751 Broad Street, Newark, New Jersey:

               Robert C. Winters - Chairman of the Board, President and
               Chief               Executive Officer

               Garnett L. Keith, Jr. - Vice Chairman

               William P. Link - Executive Vice President ("EVP")

               Edward D. Zinbarg - EVP

               Robert P. Hill - EVP

               Robert E. Riley - EVP, Prudential Reinsurance Company

               James W. Stevens - Chairman and Chief Executive Officer,
                                  Prudential Asset Management Group

               William M. Bethke - President, Capital Markets Group

               Stephen R. Braswell - Vice President, Investment Services
                                     Group

               John D. Brookmeyer - Senior Managing Director, Prudential
                                    Global Asset Management

               E. Michael Caulfield - President, Prudential Preferred
                                      Financial Services

               Robert M. Chmely - Chief Financial Officer, Prudential Asset
                                  Management Group

               Martha J. Clark - President, Prudential Asset Management
                                 Company

               James E. Dwane - President, Prudential Reinsurance

               William S. Field - Chairman, Prudential Equity Investors,
                                  Inc.

               James R. Gillen - Senior Vice President and General Counsel




























          
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               Bruce J. Goodman - President, Prudential Business Systems

               Nicholas M. Graves - President, Private Placement Group

               Allen M. Haight - President, AARP Operations

               Samuel H. Havens - President, Group Operations

               Eugene B. Heimberg - President and Chief Investment Officer,
                                    Prudential Investment Company

               William G. Hunt, Jr. - Senior Vice President and Chief
                                      Marketing Officer, Prudential Preferred
                                      Financial Services

               Milan E. Johnson -  Chairman and Chief Executive Officer,
                                   Prudential Residential Services Company

               S. Ross Johnson - President, Canadian Operations

               Ira J. Kleinman - President, Prudential Select Marketing
                                 Company

               Donald C. Mann - Senior Vice President

               John P. Murray - EVP and Diector of Corporate Risk
                                Management

               Eugene M. O'Hara - Senior Vice President, Comptroller and
                                  Chief Financial Officer

               I. Edward Price - President, International Insurance

               Donald G. Southwell - President, Prudential Insurance and
                                     Financial Services

               Dorothy K. Light - Vice President and Secretary

               Martin Pfinsgraff - Vice President and Treasurer

               Prudential, the Directors and the Officers are collectively
     referred to herein, as the "Enumerated Persons."  Each of the
     Directors and Officers is an American citizen, with the exception of
     Messrs. S. Ross Johnson and Richard M. 







































          
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     Thomson, who are Canadian citizens.  Based upon the knowledge of
     Prudential and without independent verification, none of the Enumerated
     Persons has, during the last five years, been convicted in a criminal
     proceeding (excluding traffic violations or similar misdemeanors), nor
     have any of the Enumerated Persons, during the last five years, been a
     party to a civil proceeding of a judicial or administrative body of
     competent jurisdiction and as a result of such proceeding was or is
     subject to a judgment, decree or final order enjoining future violations
     of, or prohibiting or mandating activities subject to, federal or state
     securities laws or finding any violation with respect to such laws.
         

     ITEM 3.   SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION.
     ------    -------------------------------------------------

               Prudential acquired beneficial ownership of the shares of
     Common Stock reported in Item 5 upon the conversion of certain
     securities of the Issuer previously owned by Prudential, pursuant to
     the merger consummated on December 14, 1993 (the "Merger") of Adobe
     Pipeline Gas Company, an indirect wholly-owned subsidiary of Santa Fe
     Energy Resources, Inc. ("SFER"), and a direct wholly-owned subsidiary
     of SFER Pipeline, Inc. ("Pipeline", and collectively with SFER, "Santa
     Fe") with and into the Issuer.  The Merger was consummated pursuant to
     the Agreement of Merger, dated as of July 28, 1993, as amended, by and
     among the Issuer and Santa Fe.

               Prior to the Merger and certain related transactions,
     Prudential held the securities of the Issuer as set forth in the left-
     hand column of the following table.





































          
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     The right-hand column reflects the securities of the Issuer that
     Prudential received as a result of the Merger and the related
     transactions.

     Pre-Merger Securities              Converted into or Exchanged For
     ---------------------              -------------------------------
     49,500 shares of 7% Senior        (i)  an aggregate of 553,658 shares
     Cumulative Preferred Stock        of Common Stock, (ii) a beneficial
                                       interest in the H/P Trust (defined
                                       in Item 5) and (iii) $33 million
                                       aggregate principal amount of the
                                       Senior Secured Notes (defined below)

     300,000 shares of Common Stock    (i) 20,001 shares of Common
                                       Stock and (ii) 5,001 shares of
                                       Junior Preferred Stock
                                       (defined below), each share of
                                       which is presently exercisable
                                       for one share of Common Stock

     72,704,000 shares of Class B      A beneficial interest in the
     Common                            H/P Trust

     11,341,000 shares of Class C      756,104 shares of Common Stock
     Common Stock

     $23.4 million of 6.20% Senior     $23.4 million of the Senior 
     Secured Notes due 2000            Secured Notes

     In summary, upon the consummation of the Merger and the related
     transactions, Prudential directly held an aggregate of 1,329,763
     shares of Common Stock, a beneficial interest in the H/P Trust (which,
     as described in Item 5 below, owns 4,983,180 shares of Common Stock),
     5,001 shares of Junior Exchangeable Automatically Convertible
     Preferred Stock, Series B, of the Issuer (the "Junior Preferred
     Stock") presently exercisable for 5,001 shares of Common Stock, and
     $56.4 million of the Issuer's 8% Senior Secured Notes due 2003 (the
     "Senior Secured Notes").










































          
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               Each share of Junior Preferred Stock is exercisable for one
     share of Common Stock upon the payment of the exercise price in effect
     at the time of exercise and the delivery of certificate representing
     the Junior Preferred Stock to the Company.  The Junior Preferred Stock
     automatically converts into .001 of a share of Common Stock, subject
     to certain adjustments, on the earlier of (i) the thirty-first day
     after the Common Stock has reached a certain reported sales price for
     40 consecutive trading days or (ii) December 14, 1995.

     ITEM 4.   PURPOSE OF TRANSACTION.
     ------    ----------------------

               Prudential acquired the Common Stock reported in Item 5 in
     the ordinary course of business, as a result of the Merger. 
     Prudential's investment in the Common Stock beneficially owned by it
     is solely for investment purposes.  

               Other than as contemplated by the Trust Agreement (as
     defined in Item 5), the Voting Agreement or the Registration Rights
     Agreement (each as defined in Item 6), neither Prudential nor, to the
     best of Prudential's knowledge without investigation, any other
     Enumerated Person has any plans or proposals which relate to, or would
     result in any actions listed in (a) through (j) inclusive, of Item 4
     of Schedule 13D.



































































          
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     ITEM 5.   INTEREST IN SECURITIES OF THE ISSUER.
     ------    ------------------------------------

     DESCRIPTION OF THE H/P TRUST
     ----------------------------

               Pursuant to a Trust Agreement, dated as of December 14, 1993
     (the "Trust Agreement") by and among the Issuer, Prudential and
     Liberty Bank and Trust Company of Oklahoma City, N.A. (the "Trustee"),
     a trust (the "H/P Trust") was formed and was funded by the Issuer with
     4,983,180 shares of Common Stock (the "Trust Shares").  Initially, all
     Trust Shares are designated as "Unclassified Shares" for purposes of
     the Trust Agreement.  Any Trust Shares that are from time to time
     classified as described below will be designated as "Classified
     Shares" for purposes of the Trust Agreement.

               Pursuant to the Trust Agreement, the Company is obligated to
     cause the transfer agent for the Junior Preferred Stock to deposit to
     the H/P Trust all proceeds from the exercise of shares of Junior
     Preferred Stock.  At the end of each calendar quarter and upon
     termination of the H/P Trust, the Trustee will compute the amount of
     such exercise proceeds deposited to the H/P Trust since the last
     classification of Trust Shares, if any, and the number of Exercise
     Units (as defined below) represented thereby.  "Exercise Units" means
     the amount of exercise proceeds deposited to the H/P Trust at any
     given time divided by the exercise price (the price per share of
     Common Stock required to be paid upon exercise of shares of Junior
     Preferred Stock) in effect on the date of the exercise giving rise to
     such proceeds, after taking into account any adjustments to such
     price.  If, as of the last day of each calendar quarter or as of the
     termination date of the trust (each such date, a "Reporting Date"),
     the number of Exercise Units represented by exercise proceeds
     deposited












































          
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     to the H/P Trust since the last classification of Trust Shares is
     greater than the number (rounded to the next higher whole number, if
     fractional) equal to the quotient of (A) 20% of the sum of (1) the
     number of Unclassified Shares in the H/P Trust immediately prior to
     the date of such calculation plus (2) the number of shares of Common
     Stock directly held by Prudential immediately prior to the Reporting
     Date divided by (B) the difference between (1) 100% minus (2) 80% of
     the fraction (not greater than one) determined by dividing (x) the sum
     of (I) the number of the Unclassified Shares in the H/P Trust
     immediately prior to the date of such calculation plus (II) the number
     of shares of Common Stock directly held by Prudential immediately
     prior to the Reporting Date by (y) the number of all of the shares of
     Common Stock issued and outstanding immediately before the date of
     such calculation, treating any Classified Shares as not being issued
     or outstanding and treating any Unclassified Shares that are
     constructively owned by Prudential under Section 318 of the Internal
     Revenue Code of 1986, as amended, as being issued and outstanding,
     then the Trustee will (x) pay the principal amount of all exercise
     proceeds deposited since the last classification of Trust Shares to
     Prudential, (y) pay to the Issuer all other funds in the H/P Trust
     (except such amount as the Trustee, in its sole discretion, shall
     decide to retain for the payment of expenses), and (z) classify that
     number of Unclassified Shares that is equal to the number of Exercise
     Units corresponding to the amount of exercise proceeds deposited to
     the H/P Trust since the last















































          
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     classification of Trust Shares, and distribute such Classified Shares
     to the Issuer for cancellation.
    
               The H/P Trust has a minimum term of seven months. 
     Thereafter, the H/P Trust will terminate on the day after all of the
     outstanding shares of Junior Preferred Stock have been exercised for
     or converted into Common Stock (as described in Item 3), but, in any
     event, no later than December 15, 1995.  Upon termination of the H/P
     Trust (after first determining whether a Classification Event has
     occurred and making the distributions according to (x), (y) and (z)
     above), the Trustee will distribute the balance of Unclassified Shares
     in the H/P Trust to Prudential and will distribute all other assets in
     the H/P Trust, including any Classified Shares, to the Issuer.
    
             Under the Trust Agreement neither the Trustee, Prudential
     nor the Issuer has the power to sell, transfer, assign, pledge,
     hypothecate, encumber or in any manner dispose of the Trust Shares
     other than as described above.  The Trustee also is obligated to vote
     the Unclassified Shares in accordance with the instructions of
     Prudential.
  
     RESPONSE TO ITEMS 5(A)-(E)
     --------------------------
  
             (a)  Prudential directly owns 1,329,763 shares of Common
     Stock and, pursuant to the Trust Agreement, has power to direct the
     Trustee to vote the 4,983,180 shares of Common Stock held by the
     Trust.  Prudential has the right to acquire up to 5,001 shares of
     Common Stock upon the exercise of the shares of the Junior Preferred
     Stock it holds.  Accordingly, Prudential may be deemed to











































          
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     beneficially own a total of 6,317,944 shares of Common Stock which
     represents 24.6% of the outstanding Common Stock.  As of the date
     of this Schedule 13D and based upon the knowledge of Prudential without
     independent verification, none of the other Enumerated Persons
     beneficially owns any shares of the Common Stock.

               Prudential expressly disclaims membership in a group with
     SFER or Pipeline or both, for purposes of Rule 13d-5(b)(1) under the
     Securities Exchange Act of 1934, as amended (the "Act"), and further
     expressly disclaims that it beneficially owns any shares of Common
     Stock beneficially owned by SFER or Pipeline.
               (b)  Prudential has the sole power to vote, or direct the
     voting of, 6,317,944 shares of Common Stock, assuming Prudential's
     exercise of the Junior Preferred owned by it.

               Prudential has the sole power to dispose, or to direct the
     disposition of, the 1,329,763 shares of Common Stock held directly by
     it.  Prudential does not, directly or indirectly, through any
     contract, arrangement, understanding, relationship, or otherwise, have
     or share investment power (as defined in Rule 13d-3(a)(2) under the
     Act) or investment control (as used in Rule 16a-8(a)(3) under the Act)
     with respect to the Trust Shares, including the power to dispose, or
     to direct the disposition of, the Trust Shares.

               As of the date of this Schedule 13D and based upon the
     knowledge of Prudential without independent verification, none of the
     other Enumerated Persons has the power to vote or dispose of any
     shares of Common Stock.















































          
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               (c)  Except in connection with the Merger as described in
     Item 3, Prudential has not effected any transactions in the Common
     Stock during the preceding 60 days.  As of the date of this Schedule
     13D and based upon the knowledge of Prudential without independent
     verification, none of the other Enumerated Persons has effected any
     transactions in the Common Stock during the preceding 60 days.
               (d)  No person other than Prudential is known to have the
     right to receive or the power to direct the receipt of dividends from,
     or the proceeds of the sale of, the shares of Common Stock
     beneficially owned by it.
               (e)  Not applicable.


     ITEM 6.   CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS
     ------    WITH RESPECT TO SECURITIES OF THE ISSUER                    
               --------------------------------------------------------

               Prudential is a party to three agreements with respect to
     the shares of Common Stock beneficially owned by it: (i) the Trust
     Agreement (as described in response to Item 5 which is incorporated
     herein by reference), (ii) the Voting Agreement (defined below), and
     (iii) the Registration Rights Agreement (defined below).  In addition,
     Prudential and the Issuer are parties to a Securities Purchase
     Agreement (defined below) pursuant to which the Issuer's Senior
     Secured Notes were issued.

     VOTING AGREEMENT
     ----------------

               In connection with the Merger and the related transactions,
     Prudential and Santa Fe entered into a Voting Agreement dated December
     14, 1993 (the "Voting Agreement"),



































          
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     in which each party agreed to vote the shares of Common Stock
     beneficially owned by it (which, in the case of Prudential, includes
     the Trust Shares) in favor of persons designated by the parties from
     time to time for election to the board of directors of the Issuer.
     As a result of the Merger, the Issuer's entire board of directors
     consists of eight directorships, divided into three classes, with
     staggered terms.  Each of Santa Fe and Prudential have agreed to vote
     all of the shares of Common Stock beneficially owned by it so as to
     cause: (i) 50% of the number of directorships constituting the entire
     board of directors of the Issuer to be designated by Santa Fe, (ii)
     one person designated by Prudential to be elected as a Class I director
     of the Issuer and (iii) until the expiration of the initial term of a
     Class III directors at the third annual meeting of stockholders following
     the Merger, one person jointly designated by Santa Fe and Prudential to
     be elected as a Class III director of the Issuer.  Each of SFER and
     Prudential has granted reciprocal irrevocable proxies with respect to
     the shares of Common Stock beneficially owned by it, which proxies can
     be exercised solely upon the failure of the grantor thereof to vote the
     shares of Common Stock beneficially owned by it in accordance with the
     Voting Agreement.
           
             The Voting Agreement further provides that each of Santa Fe
     and Prudential will vote all shares of Common Stock beneficially owned
     by it against any proposed amendments to Section 3.03 of the Issuer's
     By-laws, which governs the filling of vacancies on the Board, and
     against any proposed amendment to Article 7 of the Issuer's
     Certificate of Incorporation, which governs the amendment of such By-
     laws provisions.
         
















































          
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      The Voting Agreement terminates by its terms upon the
     earlier to occur of (i) the tenth anniversary of the Merger and (ii)
     such time as Prudential no longer beneficially owns at least 756,100
     shares of Common Stock.
          

     REGISTRATION RIGHTS AGREEMENT
     -----------------------------

               Pursuant to the Merger Agreement, the Issuer entered into
     the Registration Rights Agreement, dated as of December 14, 1993 (the
     "Registration Rights Agreement"), with Santa Fe and Prudential
     pursuant to which each of Santa Fe and Prudential will be entitled to
     certain demand and "piggyback" registration rights with respect to the
     shares of capital stock of the Company issued to it in the Merger as
     described below and, with respect to Prudential, any shares of Common
     Stock that may be received by Prudential upon the termination of the
     H/P Trust.

               Pursuant to the Registration Rights Agreement, Prudential
     will have the right, subject to certain limitations, exercisable one
     time in any 12-month period, to require the Issuer to register,
     pursuant to the Securities Act of 1933, as amended (the "Securities
     Act"), the offer and sale of (i) the Common Stock received by
     Prudential pursuant to the Merger, and (ii) any shares of Common Stock
     that may be received by Prudential upon the termination of the H/P
     Trust.  All expenses in connection with the first two such demand
     registrations will be borne by the Issuer; all expenses in connection
     with subsequent demand registrations will be borne by Prudential and
     any other selling stockholders.  In addition, Prudential will have the
     right to include shares of Common Stock held by it in any registration
     statement filed by the Issuer pursuant to the Securities Act
     (including any registration statement of the Issuer












































          
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<PAGE>
          
     required by Santa Fe but excluding any registration statement filed
     by the Issuer in connection with an employee stock plan).  The Issuer
     will pay all expenses incurred in connection with any such "piggyback"
     registrations other than registration fees relating to the shares of
     Common Stock to be sold for the account of Prudential in connection
     with such registrations, fees and expenses of counsel for Prudential
     and certain other expenses (which will be paid by Prudential).

     SECURITIES PURCHASE AGREEMENT  
     -----------------------------

               In connection with the Merger, Prudential and the Issuer
     entered into a Securities Purchase Agreement dated as of December 14,
     1994 (the "Securities Purchase Agreement") pursuant to which the
     Issuer issued to Prudential (i) $23.4 million aggregate principal
     amount of Senior Secured Notes in exchange for the $23.4 million
     aggregate principal amount of the 6.20% Senior Secured Notes due 2000
     then held by Prudential, and (ii) $33 million aggregate principal
     amount of Senior Secured Notes in partial consideration for the
     conversion of Prudential's shares of the Issuer's 7% Senior Cumulative
     Preferred Stock pursuant to the Merger (see the table set out in Item
     3).  The Securities Purchase Agreement contains customary
     representations, warranties, covenants and indemnification provisions. 
     The Senior Secured Notes are secured by a first priority lien granted
     to a collateral agent for the benefit of Prudential and another senior
     secured lender of the Issuer, primarily on the outstanding capital
     stock of certain of the Issuer's subsidiaries and on the accounts
     receivable and other personal property of the Issuer.















































          
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<PAGE>

               Further, Prudential expressly disclaims membership in a
     group with either Santa Fe or Pipeline or both, and expressly
     disclaims that it beneficially owns any shares of Common Stock held by
     either Santa Fe or Pipeline at any time.
          

     ITEM 7.   MATERIAL TO BE FILED AS EXHIBITS.
               --------------------------------
               1.   Trust Agreement.
               2.   Voting Agreement.
               3.   Registration Rights Agreement.
               4.   Securities Purchase Agreement.




































































          
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     SIGNATURE
     ---------
               After due inquiry and to the best of my knowledge and
     belief, I certify that the information set forth in this statement is
     true, complete and correct.


     Dated:  January 17, 1994


                                     THE PRUDENTIAL INSURANCE
                                       COMPANY OF AMERICA


                                     By:  /s/ Jack L. Pfeilsticker   
                                          ---------------------------
                                        Name: Jack L. Pfeilsticker
                                        Title: Assistant General
                                             Counsel























































          
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                                INDEX TO EXHIBITS


     1.   Trust Agreement dated as of December 14, 1993 by and among Hadson
          Corporation, The Prudential Insurance Company of America, Pruco
          Life Insurance Company, PruSupply, Inc., and Liberty Bank and
          Trust Company of Oklahoma City, N.A., as Trustee.

     2.   Voting Agreement dated as of December 14, 1993 by and among The
          Prudential Insurance Company of America, Pruco Life Insurance
          Company, PruSupply, Inc., Santa Fe Energy Resources, Inc. and
          SFER Pipeline, Inc.

     3.   Registration Rights Agreement dated as of December 14, 1993 by
          and among Hadson Corporation, The Prudential Insurance Company of
          America, Pruco Life Insurance Company, PruSupply, Inc., Santa Fe
          Energy Resources, Inc. and SFER Pipeline, Inc.

     4.   Securities Purchase Agreement dated as of December 14, 1993 by
          and among Hadson Corporation, The Prudential Insurance Company of
          America, Pruco Life Insurance Company and PruSupply, Inc.
























































<PAGE>
                                                                           


                                 TRUST AGREEMENT


          AGREEMENT AND DECLARATION OF TRUST, dated as of December 14,
     1993, by and among Hadson Corporation ("Hadson"), The Prudential
     Insurance Company of America ("Prudential Insurance Company"), Pruco
     Life Insurance Company ("Pruco") and PruSupply Inc. ("PruSupply"), and
     Liberty Bank and Trust Company of Oklahoma City, N.A., a National
     Banking Association with principal offices at Oklahoma City, Oklahoma
     (the "Original Trustee").

                              W I T N E S S E T H:
                              --------------------
          WHEREAS, the Board of Directors and stockholders of Hadson have
     approved an Agreement of Merger dated as of July 28, 1993, as amended
     (the "Merger Agreement"), relating to the proposed merger (the
     "Merger") of Adobe Gas Pipeline Company, a wholly- owned subsidiary of
     Santa Fe Energy Resources, Inc., with and into Hadson; and

          WHEREAS, Prudential Insurance Company, Pruco and PruSupply
     collectively own and hold (i) 300,000 shares of the Common Stock of
     Hadson, par value $.01 per share, (ii) all of the outstanding shares
     of the Class B Common Stock of Hadson, par value $.01 per share,
     (iii) all of the outstanding shares of the Class C Common Stock of
     Hadson, par value $.01 per share, and (iv) all of the outstanding
     shares of the 7% Senior Cumulative Preferred Stock of Hadson, Series
     A, par value $.01 per share; and 

          WHEREAS, the Merger Agreement contemplates that Prudential
     Insurance Company, Pruco and PruSupply shall receive, in exchange for
     their Class B Common shares and a portion of their 7% Senior
     Cumulative Preferred shares, a beneficial interest in a trust to be
     funded with 4,983,180 shares of the common stock of Hadson, par value
     $.01 per share, as the surviving corporation in the Merger (the "New
     Hadson Common Shares"), subject to certain rights retained by Hadson;

          NOW, THEREFORE, in consideration of the premises and other
     valuable consideration, and subject to the terms and provisions
     contained in this Trust Agreement, it is hereby agreed as follows:


                                   ARTICLE I.

                                 THE TRUST FUND

          1.01  Initial Funding.  Immediately after the Merger becomes
     effective, Hadson shall transfer, assign and deliver to the Trustee
     FOUR MILLION NINE HUNDRED EIGHTY-THREE THOUSAND ONE HUNDRED EIGHTY
     (4,983,180) New Hadson Common Shares (the "Initial Contribution").

          1.02  Undertaking of the Trustee.  Upon receipt of the Initial
     Contribution, the Trustee shall hold such shares, and any






















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<PAGE>
     

     additional property received by the Trustee pursuant to this Trust
     Agreement, in a separate trust in accordance with the provisions of
     this Trust Agreement.

          1.03  Ownership and Control of Trust Fund.  Except as expressly
     provided hereunder, the beneficiaries under this Trust Agreement shall
     have no title or right to, or possession, management or control of,
     the Trust Fund.  The whole title to all of the Trust Fund shall be
     vested in the Trustee and the sole interest of the beneficiaries under
     this Trust Agreement shall be the rights and benefits given to such
     persons under this Trust Agreement.


                                   ARTICLE II.

                              NAME AND DEFINITIONS

          2.01  Name.  This trust shall be known as the H/P Trust.

          2.02  Terms Defined in the Recitals.  Terms defined in the
     recitals hereto have the meanings ascribed therein.

          2.03  Additional Terms Defined.  For purposes of this Trust
     Agreement the following words and expressions shall have the following
     meanings and usages: 

               "Automatic Conversion":  The conversion of the New Hadson
                --------------------
     Junior Preferred Shares into New Hadson Common Shares on the earlier
     of (i) the occurrence of the Early Automatic Conversion Date (as
     defined in Article 4 Section 8.a. of the Charter) and (ii) the 2nd
     anniversary of the Merger.

               "Beneficiaries":  Prudential and Hadson.
                -------------
               "Charter":  The Certificate of Incorporation of Hadson in
                -------
     effect on the Effective Date.

               "Classification Date":  any Reporting Date as of which the
                -------------------
     number of Exercise Units collected since the last Measurement Date is
     greater than the number (rounded to the next higher whole number, if
     fractional) equal to the quotient of (A) 20% of the sum of (1) the
     number of Unclassified Shares held in the Trust Fund immediately prior
     to such Reporting Date plus (2) the number of Prudential's New Hadson
     Common Shares immediately prior to such Reporting Date, divided by (B)
     the difference between (1) 100% minus (2) 80% of the fraction (not
     greater than one) determined by dividing (x) the sum of (I) the number
     of Unclassified Shares held in the Trust Fund immediately prior to
     such Reporting Date plus (II) the number of Prudential's New Hadson
     Common Shares immediately prior to such Reporting Date, by (y) the
     number of all of the issued and outstanding New Hadson Common Shares
     immediately before such Reporting Date, treating


















                                        2
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     any Classified Shares held in the Trust Fund immediately prior to such
     Reporting Date as not being issued or outstanding and treating any
     Unclassified Shares that are constructively owned by Prudential under
     Section 318 of the Code as being issued and outstanding.

               "Classified Shares":  all of the Trust's New Hadson Common
                -----------------
     Shares that have been designated as Classified Shares pursuant to
     Section 4.06(c).

               "Code":  the Internal Revenue Code of 1986, as amended from
                ----
     time to time.  Any reference to a Section of the Code shall be deemed
     to refer as well to any subsequent provision of law enacted in its
     place, and shall be deemed to include all Treasury Regulations
     promulgated under the Code interpreting or applying that Section.

               "Conversion Notice":  the notice required to be delivered by
                -----------------
     Hadson to the holders of the New Hadson Junior Preferred Shares
     advising them of the automatic conversion of the New Hadson Junior
     Preferred Shares into New Hadson Common Shares.

               "Effective Date":  the date on which the Merger becomes
                --------------
     effective.

               "Exercise Price":  the price per New Hadson Common Share
                --------------
     required to be paid at any given time pursuant to Article 4 Section
     C.6. of the Charter in order to exercise a New Hadson Junior Preferred
     Share to purchase New Hadson Common Shares, after taking into account
     any adjustments required under the provisions of the Charter.

               "Exercise Price Transfer Period":  shall mean (i) for so
                ------------------------------
     long as the Trustee and Transfer Agent are the same or are affiliated,
     within one business day after any New Hadson Junior Preferred Shares
     are exercised; (ii) in all other circumstances, on each Friday for all
     exercises of New Hadson Junior Preferred Shares during the period
     ending on the Wednesday of such week and starting on the Thursday of
     the preceding week; provided, however, that if the aggregate amount
                         --------  -------
     received during such period (plus any amounts held over from prior
     periods) is less than $50,000, all such amounts shall be held by the
     Transfer Agent until the subsequent period and added to amounts
     received in such subsequent period; and (iii) notwithstanding and in
     addition to the foregoing, on the date of termination of the Trust in
     accordance with the terms hereof.

               "Exercise Proceeds":  all amounts received by the Trustee
                -----------------
     from Hadson pursuant to Section 4.05.

               "Exercise Units":  the amount of Exercise Proceeds received
                --------------
     by the Trustee at any given time divided by the Exercise















                                        3
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     Price in effect on the date of exercise giving rise to such Exercise
     Proceeds.

               "General Fund":  the assets comprising the Trust Fund other
                ------------
     than New Hadson Common Shares.

               "Hadson's Transfer Agent":  the institution retained by
                -----------------------
     Hadson from time to time as transfer agent with respect to New Hadson
     Junior Preferred Shares.

               "income":  the income of the Trust as determined under the
                ------
     terms of this Trust Agreement and applicable law, not including stock
     dividends or other distributions in the form of New Hadson Common
     Shares.

               "Measurement Date":  the Effective Date and each
                ----------------
     Classification Date.

               "New Hadson Junior Preferred Shares":  shares of the Junior
                ----------------------------------
     Exercisable Automatically Convertible Preferred Stock, Series B, par
     value $.01 per share, of Hadson, as surviving corporation in the
     Merger.

               "Notice":  the tangible expression of a communication sent,
                ------
     an instruction or direction given, or an action taken, pursuant to
     this Trust Agreement.  A Notice shall be effective only if it conforms
     to the requirements of Section 13.05.

               "Prudential":  Prudential Insurance Company, as nominee and
                ----------
     agent for itself, and its wholly-owned affiliates Pruco and PruSupply,
     as provided in Section 9.02.

               "Prudential's New Hadson Common Shares":  1,329,763 New
                -------------------------------------
     Hadson Common Shares.

               "Reporting Date":  (i) prior to the delivery of the
                --------------
     Conversion Notice, the last day of each calendar quarter and (ii)
     after the delivery of the Conversion Notice, the Termination Date. 

               "Termination Date":  the date upon which the Trust
                ----------------
     terminates pursuant to Section 3.01.

               "Trust":  the separate trust held under this Trust
                -----
     Agreement.

               "Trust Agreement":  this Trust Agreement, as amended from
                ---------------
     time to time.

               "Trust Fund":  all property (principal plus accrued,
                ----------
     accumulated and undistributed income) that, at any particular time,
     belongs to the Trust.








                                        4
<PAGE>

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               "Trust Term":  the period from the date of execution of this
                ----------
     Trust Agreement though and including the Termination Date.

               "Trustee":  each Trustee and all Trustees (including the
                -------
     Original Trustee) serving under this Trust Agreement at any particular
     time.

               "Trust's New Hadson Common Shares":  all of the New Hadson
                --------------------------------
     Common Shares held in the Trust Fund from time to time.

               "Unclassified Shares":  all of the Trust's New Hadson Common
                -------------------
     Shares that have not been reclassified pursuant to Section 4.06(c).

          2.04  Gender and Number.  Except where the context otherwise
     requires, words importing the masculine gender include the feminine
     and the neuter, if appropriate, words importing the singular number
     shall include the plural number and vice versa and words importing
     persons shall include firms, associations, corporations and other
     entities.

          2.05  Subdivision References.  All references herein to Articles,
     Sections and other subdivisions refer to the corresponding Articles,
     Sections and other subdivisions of this Trust Agreement, and the word
     "herein" and words of similar import refer to this Trust Agreement as
     a whole and not to any particular Article, Section or subdivisions of
     this Trust Agreement.

          2.06  Titles.  The Article titles and Section headings in this
     Trust Agreement are included solely for purposes of identification,
     and are not be used to construe any provision contained in this Trust
     Agreement or for any other purpose.


                                  ARTICLE III.

                        DURATION AND TERMINATION OF TRUST

          3.01  Duration.  The Trust shall terminate one (1) day after the
     later to occur of the following events: 

               (i) the date occurring seven (7) months after
          completion of the transfer and delivery of the Initial
          Contribution to the Trustee pursuant to Section 1.01; or

               (ii) the earliest date on which all New Hadson Junior
          Preferred Shares have been converted, whether by the exercise by
          the holder thereof or by Automatic Conversion, into New Hadson
          Common Shares.




















                                        5
<PAGE>

<PAGE>
     

          3.02  Rule against Perpetuities.  Notwithstanding any other
     provision of this Trust Agreement, and particularly notwithstanding
     the provisions of Section 3.01, the Trust shall terminate, if it shall
     not have previously terminated, one (1) day before the twentieth
     (20th) anniversary of the Effective Date.

          3.03  Termination by Beneficiaries.  The Trust may not be revoked
     or terminated at any time prior to the Termination Date by the
     Beneficiaries and/or the Trustee.

          3.04  Continuance of Trust for Winding Up.  After the Termination
     Date, and solely for the purpose of liquidating and winding up the
     affairs of the Trust, the Trustee shall continue to act as such until
     its duties have been fully performed.


                                   ARTICLE IV.

                        ADMINISTRATION OF THE TRUST FUND

          4.01  No Disposition of the Trust's New Hadson Common Shares. 
     The Trustee shall not sell, transfer, assign, pledge, hypothecate,
     encumber or in any other manner dispose of the Trust's New Hadson
     Common Shares except as expressly provided in Sections 4.06(d) and
     4.07.

          4.02  Voting the Trust's New Hadson Common Shares.  The Trustee
     shall, at any meeting at which the Trust's New Hadson Common Shares
     are eligible to vote (or in connection with any solicitation of
     consents with respect to which the Trust's New Hadson Common Shares
     are entitled to consent), vote (or consent with respect to) all of the
     Trust's New Hadson Common Shares that are Unclassified Shares in
     accordance with the instructions of Prudential.

          4.03  Payment of Claims, Expenses and Liabilities.  In accordance
     with Article X, the Trustee shall pay from the General Fund all
     claims, expenses, charges, liabilities and obligations of the Trust
     Fund as contemplated by this Trust Agreement and as required by law. 
     Furthermore, no such charges may be charged against or paid from the
     Trust's New Hadson Common Shares, from the principal amount of any
     Exercise Proceeds held by the Trustee, or from any cash dividends paid
     with respect to the Unclassified Shares.

          4.04  Disposition of Net Income.  The Trustee shall collect all
     of the net income of the Trust Fund and shall hold or dispose of the
     same as follows:

               (a) The Trustee shall distribute all net income comprised of
     dividends and other distributions paid with respect to Unclassified
     Shares to Prudential immediately upon receipt.






















                                        6
<PAGE>

<PAGE>
     

               (b) Subject to the provisions of Section 10.02(b), the
     Trustee shall distribute all net income comprised of dividends and
     other distributions paid with respect to Classified Shares to Hadson
     immediately upon receipt.

               (c) The Trustee shall accumulate and add to the General Fund
     all other net income earned on the Trust Fund (including net income
     earned on investments made pursuant to Section 7.02).

          4.05  Collection of Exercise Proceeds.  (a) Hadson shall direct
     Hadson's Transfer Agent to pay to the Trustee, and the Trustee shall
     collect, within the Exercise Price Transfer Period, a sum (rounded up
     to the next cent, if fractional) equal to the product of (i) the
     Exercise Price in effect on the date on which such New Hadson Junior
     Preferred Shares were exercised, multiplied by (ii) the number of New
     Hadson Common Shares for which each New Hadson Junior Preferred Share
     was exercised pursuant to Article 4 Section C.6. of the Charter on the
     date on which such New Hadson Junior Preferred Shares were exercised,
     multiplied by (iii) the number of New Hadson Junior Preferred Shares
     that were exercised to purchase New Hadson Common Shares pursuant to
     Article 4 Section C.6. of the Charter on the date on which such New
     Hadson Junior Preferred Shares were exercised.  Each such payment
     shall be accompanied by a report by the Transfer Agent setting forth
     (x) the date of exercise of each New Hadson Junior Preferred Share
     with respect to which any payment is made, and (y) each of the items
     referred to in parts (i), (ii) and (iii) of the foregoing sentence as
     of the date of exercise.

               (b) Upon receipt and collection of each payment of Exercise
     Proceeds pursuant to subsection (a) above, the Trustee shall compute,
     as of the date of exercise of each New Hadson Junior Preferred Share
     with respect to which any payment is made (i) the aggregate amount of
     Exercise Proceeds received by it during the period beginning on the
     day after the last Measurement Date and ending on such date, and
     (ii) the number of Exercise Units represented thereby.  On each
     Reporting Date, the Trustee shall determine the sum of all Exercise
     Units received  since the most recent Reporting Date (or the Effective
     Date if there was no previous Reporting Date) in order to determine
     whether such Reporting Date is a Classification Date.

          4.06  Distributions and Classifications on Classification Dates. 
     Within five (5) business days after each Classification Date:

               (a) The Trustee shall pay to Prudential the principal amount
     of all Exercise Proceeds collected since the last Measurement Date.

               (b) The Trustee shall pay to Hadson the balance of the
     General Fund (except such amount as the Trustee, in its sole
























                                        7
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     discretion, decides to retain for the payment of expenses, as provided
     in Section 10.02(b)).

               (c) The Trustee shall designate and characterize as
     Classified Shares that number of Unclassified Shares that is equal to
     the number of Exercise Units distributed to Prudential pursuant to
     Section 4.06(a) since the last Measurement Date.

               (d) The Trustee shall distribute the Classified Shares to
     Hadson. 

          4.07  Final Distribution.  Upon the Termination Date:

               (a) The Trustee shall distribute to Prudential the balance
     of Unclassified Shares remaining in the Trust Fund.

               (b) The Trustee shall distribute to Hadson the balance of
     the Trust Fund remaining after the distribution (if any) under
     subsection (a) above (except such amount as the Trustee, in its sole
     discretion, decides to retain for the payment of expenses, as provided
     in Section 10.02(b)).


                                   ARTICLE V.

            REPORTS TO THE TRUSTEE AND VERIFICATION OF STOCKHOLDINGS

          5.01  Reports by Hadson's Transfer Agent.  Hadson shall provide,
     or shall direct Hadson's Transfer Agent to provide, to the Trustee,
     together with or prior to delivery of each payment made pursuant to
     Section 4.05(a), a statement showing (i) the number of New Hadson
     Junior Preferred Shares that had been exercised to purchase New Hadson
     Common Shares pursuant to Article 4 Section C.6. of the Charter since
     the most recent Measurement Date and since the latest Reporting Date,
     and (ii) the number of New Hadson Junior Preferred Shares issued and
     outstanding as of the date of such report, as shown on Hadson's
     Transfer Agent's books and records.

          5.02  Securities Law Reports.  Hadson shall deliver to the
     Trustee copies of all periodic reports, proxy statements and other
     instruments or documents filed by Hadson with the United States
     Securities and Exchange Commission promptly following such filing.

          5.03  Reconciliation of Discrepancies.  In the event of any
     discrepancy between or among the reports obtained by the Trustee
     pursuant to the preceding provisions of this Article concerning
     (i) the number of New Hadson Junior Preferred Shares that had been
     exercised to purchase New Hadson Common Shares pursuant to Article 4
     Section C.6. of the Charter, (ii) the number of New Hadson Junior
     Preferred Shares then remaining outstanding, (iii) the number of New
     Hadson Common Shares issued upon exercise or





















                                        8
<PAGE>

<PAGE>
     

     conversion of New Hadson Junior Preferred Shares or (iv) such other
     matters as the Trustee may reasonably request relating to the
     transactions contemplated hereby, the Trustee shall reconcile such
     discrepancy in such manner and on the basis of such evidence as the
     Trustee, in its sole discretion, deems advisable, and shall determine
     the number of shares so exercised, issued or outstanding, as the case
     may be.  The determination of the Trustee pursuant to the preceding
     sentence shall be final and binding upon the Beneficiaries. 
     Alternatively, the Trustee may commence a legal action to reconcile
     such discrepancy, if it deems it advisable to do so.

          5.04  Reports by Prudential.  (a) Within 10 business days after
     the Effective Date, Prudential shall provide to the Trustee a
     statement showing the number of Prudential's New Hadson Common Shares
     owned as of the Effective Date, as shown on Prudential's books and
     records.

               (b)  Notwithstanding the provisions of Section 5.03, in
     making the computation of the quotient described in the definition of
     "Classification Date" in Section 2.03, the Trustee may rely,
     absolutely and without further investigation, upon the report provided
     by Prudential pursuant to this Section, and the Trustee shall not be
     obligated to inquire into the accuracy of any such Notice or to verify
     the number of Prudential's New Hadson Common Shares.


                                   ARTICLE VI.

                                   TAX MATTERS

          6.01   Income Tax Status.  (a) The Trust is intended to be
     treated as a grantor trust subject to the provisions of Subchapter J,
     Subpart E of the Code that is owned by the Beneficiaries, as grantors,
     as follows: 

               (i) for all federal, state and local income tax
          purposes, Prudential shall be deemed to be the owner of each
          Unclassified Share held in the Trust Fund during all or any
          portion of a taxable year of Prudential, but only for such
          portion of the taxable year as such Unclassified Share is so
          characterized under this Trust Agreement; and 

               (ii) for all federal, state and local income tax
          purposes, Hadson shall be deemed to be the owner of the
          General Fund and each Classified Share held in the Trust
          Fund during all or any portion of a taxable year of Hadson,
          but only, in the case of a Classified Share, for such
          portion of the taxable year as such Classified Share is so
          characterized under this Trust Agreement.  























                                        9
<PAGE>

<PAGE>
     

          (b)  Any and all items of income, gain, loss, amount realized,
     deduction or credit attributable to Unclassified Shares during the
     period they are deemed to be owned by Prudential for tax purposes
     shall be allocated to Prudential, and all remaining items of income,
     gain, loss, amount realized, deduction or credit attributable to the
     Trust Fund shall be allocated to Hadson, provided, however, that the
                                              --------  -------
     Trustee shall not determine the amount of any income, gain or loss
     recognized by Prudential in connection with a distribution of Exercise
     Proceeds to Prudential in exchange for the reclassification of
     Unclassified Shares pursuant to Section 4.06, it being understood and
     agreed that Prudential shall be solely responsible for such
     determination.

               (c)  The Trustee is authorized to take any action consistent
     with the provisions of this Trust Agreement that may be necessary or
     appropriate to minimize any potential tax liability of the
     Beneficiaries arising out of the operations of the Trust.

          6.02   Tax Returns and Reports.  In accordance with Section
     1.671-4(a) of the Treasury Regulations, the Trustee will file with the
     United States Internal Revenue Service annual information tax returns
     showing the items of income, loss, amount realized, deduction and
     credit attributable to the Trust and detailing the allocation of such
     items to the Beneficiaries, as provided in Section 6.01.  The Trustee
     will send to each Beneficiary a copy of the separate statement
     containing such information and will instruct each Beneficiary to
     report such items on its federal income tax return.

          6.03  Tax Reporting by Beneficiaries.  Each Beneficiary hereby
     covenants and agrees that it shall file all applicable federal, state
     and local income tax returns and reports on a basis and in a manner
     consistent in all material respects with the provisions of Section
     6.01, and that each such return or report shall include the items of
     income, loss, amount realized, deduction and credit set forth in the
     copy of the income tax reporting statement delivered to such
     Beneficiary by the Trustee pursuant to Section 6.02.


                                  ARTICLE VII.

                    POWERS OF AND LIMITATIONS ON THE TRUSTEE

          7.01  Limitations on Trustee.  The Trustee shall not at any time,
     on behalf of the Trust or the Beneficiaries, enter into or engage in
     any trade or business, and no part of the Trust Fund shall be used or
     disposed of by the Trustee in furtherance of any trade or business. 
     The Trustee shall be restricted to receiving the Trust's New Hadson
     Common Shares, voting (or executing consents with respect to) the
     Trust's New Hadson Common Shares in the manner provided herein,
     performing any other obligations





















                                       10
<PAGE>

<PAGE>
     

     imposed under or pursuant to any agreements to which the Trustee is
     subject by virtue of ownership of the Trust's New Hadson Common Shares
     (including exercising the powers set forth in Section 7.03), receiving
     the Exercise Proceeds from Hadson or Hadson's Transfer Agent,
     determining and collecting income from the Trust Fund, collecting,
     receiving, compromising and settling receivables, discharging,
     compromising and settling any unascertained, unliquidated or
     contingent debts, liabilities or obligations for the payment of which
     any reserve may have been established by the Trustee, disposing of the
     Trust Fund as provided in Article IV of this Trust Agreement, and
     bringing suit or defending any suit against the Trust or the Trustee
     on behalf of the Trust, and exercising such other powers and duties as
     specified elsewhere in this Trust Agreement, including, without
     limitation the duties specified in Section 7.03, for the purposes of
     carrying out the terms of this Trust Agreement.

          7.02  Limitations on Investments.  The Trustee shall invest the
     Exercise Proceeds and other funds received by it as Trustee or
     otherwise held in the Trust Fund only in (a) short-term marketable
     direct obligations of, or guaranteed as to principal and interest by,
     the United States government or any agency thereof; or (b) insured
     demand deposit accounts or interest-bearing certificates of deposit or
     other similar obligations of domestic banks or other financial
     institutions having a shareholders' equity or equivalent capital of
     not less than Fifty Million Dollars ($50,000,000), at the then best
     generally available rates of interest for like amounts and like
     periods, provided, however, that the maturities of any of the
     foregoing shall not exceed one (1) year.

          7.03  Specific Powers of Trustee.  Subject to the limitations
     contained in this Trust Agreement, the Trustee shall have, in addition
     to any powers conferred by any other provision of this Trust
     Agreement, the power to take any and all actions as, in the sole
     discretion for the Trustee, are necessary or advisable to effectuate
     the purpose of the Trust, including the following specific powers:

               (a)  To retain all or any assets constituting part of the
          Trust Fund, to hold legal title to property of the Trust in the
          name of the Trust, to invest or reinvest funds of the Trust only
          as provided in Section 7.02 and to cause such investments of any
          part to be registered and held in its name, as Trustee, or in the
          names of nominees.

               (b)  To maintain appropriate books and records relating to
          the Trust and the Trust Fund detailing the acts and transactions
          of the Trustee.

               (c)  To initiate, prosecute, defend, supervise, direct,
          compromise or settle any claim, demand, action or proceeding
          relating to the Trust or this Trust Agreement, and in






















                                       11
<PAGE>

<PAGE>
     

          connection therewith, at the Trustee's discretion, to retain and
          employ such agents and professionals (including professionals
          affiliated with the Trustee or any retained by Hadson or
          Prudential) and to confer upon them such authority as the Trustee
          may deem expedient to carry out its duties hereunder, and to pay
          reasonable compensation therefor from the Trust Fund; provided
          that the Trustee shall not be required to enter into or maintain
          any claim, demand, action or proceeding relating to the Trust
          unless it shall have sufficient funds on hand for that purpose or
          unless it shall have been indemnified to its satisfaction against
          all expenses and liabilities to which it may, in its judgment, be
          subjected by any such action on its part.

               (d)  To perform any and all acts, exercise any and all
          rights, enter into any and all proceedings, contracts and
          other instruments (including, but not limited to the
          preparation and filing of any and all statements and papers,
          documents and instruments of any kind and nature with the
          United States Securities and Exchange Commission or any
          other governmental body having jurisdiction over the Trust
          or the Merger Agreement with respect to the Trust's New
          Hadson Common Shares) that are not inconsistent with the
          provisions of this Trust Agreement and that the Trustee
          deems necessary and advisable in its opinion for the
          exercise by the Trustee of all the rights and privileges
          accorded to it hereunder, for the protection and safekeeping
          of the Trust's New Hadson Common Shares, and for the
          administration of the Trust in accordance with the terms of
          this Trust Agreement and applicable law.


                                  ARTICLE VIII.

                             ACCOUNTS OF THE TRUSTEE

          8.01  Accounts and Inspection.  The Trustee shall keep accurate
     and detailed accounts of all investments, receipts and disbursements
     and other transactions hereunder and all accounts, books and records
     relating thereto shall be open at all reasonable times to inspection
     and audit by any person designated by Hadson or by Prudential.  The
     Trustee shall promptly deliver to such designee any reports on the
     Trust Fund that are reasonably requested.

          8.02  Accounting Reports.  Within a reasonable time period
     following the Termination Date, and within one hundred twenty (120)
     days, or such other agreed-upon period, after removal or resignation
     of the Trustee, the Trustee shall deliver to the Beneficiaries a
     certified written report, in a format acceptable to the Beneficiaries,
     setting forth (i) all investments, receipts and disbursements, and
     other transactions effected during the






















                                       12
<PAGE>

<PAGE>
     

     period from the date of this Trust Agreement, or from the close of any
     preceding period covered by such a report, to the date of such
     removal, resignation or termination, (ii) all cash, securities and
     other property held at the close of such period and the current value
     thereof, and (iii) such other information as may be required of the
     Trustee under any applicable law.

          8.03  Right to Judicial Accounting.  Nothing contained in this
     Article shall be construed as a limitation upon or prohibition against
     the Trustee's right to have its accounting judicially settled.

          8.04  Preservation of Books and Records.  All records and
     accounts maintained by the Trustee with respect to the Trust shall be
     preserved for such period as may be required under any applicable law. 
     Upon the expiration of any such required retention period, the Trustee
     shall have the right to destroy such records and accounts after first
     notifying the Beneficiaries of its intention and transferring to the
     Beneficiaries all records and accounts requested.  The Trustee shall
     have the right to preserve all records and accounts in original form,
     or on microfilm, magnetic tape, or any other similar process.


                                   ARTICLE IX.

                 LIABILITIES AND INDEMNIFICATION OF THE TRUSTEE

          9.01 Generally.  The Trustee accepts and undertakes to discharge
     the trust created by this Trust Agreement upon the terms and
     conditions hereof.  The Trustee shall exercise such of the rights and
     powers vested in it by this Trust Agreement, and use the same degree
     of care and skill in its exercise of such rights and powers, as a
     prudent man would exercise or use under the circumstances in the
     conduct of its own affairs.  No provision of this Trust Agreement
     shall be construed to relieve the Trustee from liability for its own
     recklessness or its own intentional or willful and wanton misconduct
     resulting in private gain, except that:

               (a)  The Trustee shall not be liable for any action taken in
     good faith in reliance upon the advice of professionals.

               (b)  The Trustee shall not be liable except for the
     performance of such duties and obligations as are specifically set
     forth in this Trust Agreement, and no implied covenants or obligations
     shall be read into this Trust Agreement against the Trustee.

               (c)  The Trustee shall not be liable for any error of
     judgment made in good faith.

























                                       13
<PAGE>

<PAGE>
     

          9.02  Interaction with Prudential Insurance Company on Behalf of
     its Affiliates.  Prudential Insurance Company shall act as sole agent
     and nominee for itself, Pruco and PruSupply under this Trust
     Agreement, shall receive all distributions made pursuant to Article IV
     and shall deliver and receive all Notices required to be delivered
     hereunder, on behalf of itself, Pruco and PruSupply.  The Trustee
     shall not be required to see to the proper allocation or application
     of any distribution hereunder among those entities, which shall be the
     sole responsibility of Prudential Insurance Company.  All actions of
     and Notices furnished by Prudential Insurance Company shall be deemed
     to have been made by or furnished on behalf of Prudential Insurance
     Company, Pruco and PruSupply, and the Trustee shall not be required to
     inquire into the actual authority of Prudential to take such action or
     furnish such Notice, as the case may be.  Notwithstanding the
     foregoing, Prudential Insurance Company, Pruco and PruSupply shall be
     jointly and severally liable for all of the responsibilities of
     Prudential under this Trust Agreement.

          9.03  Reliance by Trustee.  Except as otherwise provided in
     Section 7.01:

               (a)  The Trustee may rely and shall be protected in acting
     upon any resolution, certificate, statement, instrument, opinion,
     report, notice, request, consent, order or other paper or document
     reasonably believed by the Trustee to be genuine and to have been
     signed or presented by the proper party or parties.

               (b)  The Trustee may consult with legal counsel to be
     selected by it, and pay the cost of such consultation from the General
     Fund, and the advice or opinion of such counsel shall be full and
     complete personal protection to the Trustee and agents of the Trust in
     respect of any action taken or suffered by it in good faith and in
     reliance on, or in accordance with, such advice or opinion.

          9.04  Indemnification of Trustee.  In addition to, and not in
     limitation of, the provisions of Section 10.02, the Trustee shall be
     indemnified by and receive reimbursement from Hadson against and from
     any and all loss, liability, damage or expense that the Trustee may
     incur or sustain, in good faith and without recklessness or its own
     intentional or willful and wanton misconduct resulting in personal
     gain, in the exercise and performance of any of the powers and duties
     of the Trustee under this Trust Agreement.  The Trustee may receive
     advance payments in connection with indemnification under this
     Section, provided that prior to receiving any such advance, the
     Trustee shall first have given a written undertaking to repay any
     amount advanced to it and to reimburse the Trust or Hadson, as
     applicable, in the event it is subsequently determined that it is not
     entitled to such indemnification.  The rights accruing to the Trustee
     by reason of the foregoing shall not be deemed to exclude any other
     right to which it may legally be entitled, nor shall anything






















                                       14
<PAGE>

<PAGE>
     

     else contained herein restrict the right of the Trustee to
     contribution under applicable law.  

          9.05  Advances by Prudential.  In the event that Hadson fails to
     pay to the Trustee any amount requested pursuant to Section 9.04 or
     Section 10.02, the Trustee shall notify Prudential of such failure and
     of the amount requested and unpaid, and Prudential may (but need not)
     advance such amount to the Trustee as a loan to the Trust at such rate
     of interest and upon such other terms and conditions as the Trustee
     and Prudential shall agree.  All such interest shall be charged as a
     general administration expense of the Trust.  

          9.06  Bond of Trustee.  Neither the Original Trustee nor any
     successor Trustee shall be obliged to file or furnish any bond or
     surety for the performance of its duties, unless otherwise ordered by
     a Court, and if so ordered, all costs and expenses of providing such
     bond or surety shall be paid or reimbursed from the General Fund.

          9.07  Liability to Third Persons.  No Beneficiary shall be
     subject to any personal liability whatsoever, in tort, contract or
     otherwise, to any person in connection with the Trust Fund or the
     affairs of the Trust, and no Trustee or agent of the Trust shall be
     subject to any personal liability whatsoever, in tort, contract or
     otherwise, to any person in connection with the Trust Fund or the
     affairs of the Trust, except for its own recklessness or its own
     intentional or willful and wanton misconduct resulting in personal
     gain; and all such persons shall look solely to the Trust Fund for
     satisfaction of claims of any nature arising in connection with
     affairs of the Trust.

          9.08  Nonliability of Trustee for Acts of Predecessors.  Any
     successor Trustee may accept and rely upon any accounting made by or
     on behalf of any predecessor Trustee hereunder, and any statement or
     representation made as to the assets comprising the Trust Fund or as
     to any other fact bearing upon the prior administration of the Trust. 
     A Trustee shall not be liable for having accepted and relied upon such
     accounting, statement or representation if it is later proved to be
     incomplete, inaccurate or untrue.  A Trustee or successor Trustee
     shall not be liable for any act or omission of any predecessor
     Trustee, nor have a duty to enforce any claims against any predecessor
     Trustee on account of any such act or omission.

          9.09  Nonliability of Trustee for Acts of Others.  Nothing
     contained in this Trust Agreement shall be deemed to be an assumption
     by the Trustee of any of the liabilities, obligations or duties of any
     of the other parties hereto, and shall not be deemed to be or contain
     a covenant or agreement by the Trustee to assume or accept any such
     liability, obligation or duty.
























                                       15
<PAGE>

<PAGE>
     


                                   ARTICLE X.

                             COMPENSATION OF TRUSTEE

          10.01  Trustee Compensation.  Each Trustee shall be entitled to
     such compensation for services rendered as shall be mutually agreed
     upon by the Trustee and Hadson prior to such Trustee's accession to
     office, to be paid in such installments and at such intervals as shall
     have been specified in such agreement. 

          10.02  Advances for Expenses.  (a)  Hadson shall pay to the
     Trustee such amounts as the Trustee shall request from time to time to
     enable the Trustee to satisfy all reasonable expenses (except those
     resulting from its own recklessness or its own intentional or willful
     and wanton misconduct resulting in private gain) incurred by the
     Trustee as a result of the execution of its duties hereunder,
     including, but not limited to, legal and accounting expenses, expenses
     incurred or anticipated as a result of disbursements and payments made
     or to be made by the Trustee, and reasonable compensation for agents,
     counsel or other services rendered to the Trustee by third parties,
     and expenses incident thereto, including taxes of any kind whatsoever,
     and related interest and penalties, that may be levied or assessed
     under existing or future laws of any jurisdiction upon or in respect
     of the Trust or the Trust's New Hadson Common Shares.  All amounts
     received by the Trustee pursuant to this Section shall be added to the
     General Fund.

               (b)  In lieu of requesting funds for the payment of
     anticipated expenses, as provided in subsection (a) above, the Trustee
     may retain as much or all of the General Fund that would otherwise be
     payable to Hadson pursuant to Section 4.04(b) as the Trustee, in its
     sole and absolute discretion shall deem advisable as a reserve for the
     payment of such expenses.

          10.03   Prior Lien of Trustee.  The Trustee shall have a prior
     lien upon the Trust Fund to secure payment of any amounts payable to
     the Trustee or to employees or agents of the Trust as compensation for
     services to the Trust or for indemnification pursuant to Section 9.04
     above.


                                   ARTICLE XI.

                         TRUSTEE AND SUCCESSOR TRUSTEES

          11.01  Generally.  The Trustee shall be a bank or trust company
     authorized to act as a corporate fiduciary under the laws of the State
     of New York or a national banking association chartered under the laws
     of the United States.  A Trustee that changes its name or reorganizes,
     reincorporates or merges with or into or consolidates with any other
     entity shall be deemed to be




















                                       16
<PAGE>

<PAGE>
     

     a continuing entity and shall continue to act as a Trustee hereunder. 

          11.02  Initial Appointment of Trustee.  The Trustee shall be
     initially appointed by Hadson.

          11.03  Resignation.  The Trustee may resign as Trustee by
     delivering a Notice of resignation to Hadson.  Such resignation shall
     become effective on the day specified in such Notice (which shall not
     be less than thirty (30) days after delivery of such Notice) or upon
     the appointment of such Trustee's successor and such successor's
     acceptance of such appointment, whichever is later.

          11.04  Appointment of Successor.  In the event of the removal,
     resignation, bankruptcy or insolvency of the Trustee, a vacancy shall
     be deemed to exist and a successor shall be appointed by Hadson.

          11.05  Acceptance of Appointment by Successor Trustee.  The
     removal, resignation, bankruptcy or insolvency of the Trustee shall
     not operate to terminate the Trust created by this Trust Agreement or
     to revoke any existing agency created pursuant to the terms of this
     Trust Agreement or invalidate any action theretofore taken by the
     Trustee.  Any successor Trustee appointed hereunder shall execute an
     instrument accepting its appointment and shall deliver one counterpart
     thereof to each of the Beneficiaries, and, in case of the Trustee's
     resignation, to the retiring Trustee.  Thereupon such successor shall,
     without any further act, become vested with all the liabilities,
     duties, powers, rights, title, discretion and privileges of its
     predecessor in the Trust with like effect as if originally named
     Trustee.  The retiring Trustee shall duly assign, transfer and deliver
     to such successor all property and money held by such retiring Trustee
     hereunder and shall, as reasonably requested by such successor,
     execute and deliver an instrument or instruments conveying and
     transferring to such successor upon the trust herein expressed, all
     the liabilities, duties, powers, rights, title, discretion and
     privileges of such retiring Trustee.


                                  ARTICLE XII.

                                   AMENDMENTS

          12.01  Amendment Authority.  Whenever necessary to carry out the
     purpose of the Trust, this Trust Agreement may be amended by the
     Trustee with the unanimous consent and approval of the Beneficiaries;
     provided, however, that no such amendment may be made that would have
     the effect of (i) extending the Termination Date beyond the date
     specified in Section 3.02, (ii) authorizing the Trustee to engage in a
     trade or business, or (iii) expanding the amendment powers of the
     Trustee under this Article.























                                       17
<PAGE>

<PAGE>
     


                                  ARTICLE XIII.

                            MISCELLANEOUS PROVISIONS

          13.01  Intention of Parties to Establish Trust.  This Trust
     Agreement is intended to create a trust without transferable
     beneficial interests (except as permitted by operation of law) and the
     Trust created hereunder shall be governed and construed in all
     respects as a trust.

          13.02  Instruments of Further Assurance.  Hadson and Prudential
     shall, upon the reasonable request of the Trustee, execute,
     acknowledge and deliver such further instruments and do such further
     acts as may be necessary or proper to carry out effectively the
     purpose of this Trust Agreement.

          13.03  Governing Law.  This Trust Agreement shall be construed
     and enforced according to the internal laws of the State of Oklahoma
     and all provisions hereof shall be administered according to the laws
     of the State of Oklahoma.

          13.04  Severability.  In the event any provision of this Trust
     Agreement or the application thereof to any person or circumstances
     shall be finally determined by a court of proper jurisdiction to be
     invalid or unenforceable to any extent, the remainder of this Trust
     Agreement, or the application of such provision to persons or
     circumstances or in jurisdictions other than those as to or in which
     it is held invalid or unenforceable, shall not be affected thereby,
     and each provision of this Trust Agreement shall be valid and enforced
     to the fullest extent permitted by law.

          13.05  Notices.  (a) Any Notice or other communication required
     or permitted to be made in accordance with this Trust Agreement shall
     be in writing and shall be deemed to have been sufficiently given, for
     all purposes, if delivered personally, or if delivered during regular
     business hours by facsimile transmission, telex or other electronic or
     telegraphic means, or if delivered by a recognized overnight or two-
     day delivery service or if mailed by first class mail:

             (i)  if to the Trustee at Liberty Bank and Trust Company of
          Oklahoma City, N.A., 100 North Broadway, Liberty Tower, Seventh
          Floor, Oklahoma City, Oklahoma 73102, Attention: John Brown,
          Trust Department.  Facsimile number:  (405) 231-6293.

             (ii)  if to any Beneficiary, to the last known business
          address of such Beneficiary reflected in the Trustee's records.

























                                       18
<PAGE>

<PAGE>
     

          (b)  Any entity may change the address at which it is to receive
     Notices under this Trust Agreement by furnishing written Notice
     thereof to the Trustee as provided above.

          13.06  Counterparts.  This Trust Agreement may be executed in any
     number of counterparts, each of which shall be an original, but such
     counterparts shall together constitute but one and the same
     instrument.

          13.07  Effective Date.  This Trust Agreement shall become
     effective immediately after the filing of the Certificate of Merger
     with respect to the Merger with the Secretary of State of the State of
     Delaware.



























































                                       19
<PAGE>

<PAGE>
     

          IN WITNESS WHEREOF, the parties hereto have executed this Trust
     Agreement or caused this Trust Agreement to be duly executed by their
     respective officers and the Trustee herein has executed this Trust
     Agreement, as Trustee, effective as of the day and year first above
     written.


     ATTEST:                  HADSON CORPORATION


     By:________________      By:____________________________________



     ATTEST:                  THE PRUDENTIAL INSURANCE COMPANY
                                   OF AMERICA


     By:_________________     By:____________________________________



     ATTEST:                  PRUCO LIFE INSURANCE COMPANY


     By:_________________     By:____________________________________


     ATTEST:                  PRUSUPPLY INC.


     By:_________________     By:____________________________________


     ATTEST:                  LIBERTY BANK AND TRUST COMPANY
                                   OF OKLAHOMA CITY, N.A.


     By:_________________     By:____________________________________

































                                       20
<PAGE>

<PAGE>
     

     STATE OF OKLAHOMA   )
                         ) ss:
     COUNTY OF           )
               -------

               Before me, the undersigned, a Notary Public in and for said
     County and State on this      day of              , 19  , personally
                              ----        -------------    --
     appeared                             to me known to be the identical
              ---------------------------
     person who subscribed the name of the maker thereof to the foregoing
     instrument as its               President and acknowledged to me that 



                    executed the same as his free and voluntary act and
     --------------
     deed and as the free and voluntary act and deed of such corporation,
     for the uses and purposes therein set forth.

               Given under my hand and seal of office the day and year last
     above written.

     My commission expires                                           
                          -------------    --------------------------
                                                  Notary Public




     STATE OF NEW JERSEY )
                         ) ss:
     COUNTY OF           )
               -------

               Before me, the undersigned, a Notary Public in and for said
     County and State on this      day of             , 19  , personally
                              ----        ------------    --
     appeared                 to me known to be the identical person who
              ---------------
     subscribed the name of the maker thereof to the foregoing instrument
     as its        President and acknowledged to me that              
            ------                                       -------------
     executed the same as his free and voluntary act and deed and as the
     free and voluntary act and deed of THE PRUDENTIAL INSURANCE COMPANY OF
     AMERICA, for the uses and purposes therein set forth.

               Given under my hand and seal of office the day and year last
     above written.

     My commission expires                                           
                          -------------    --------------------------
                                                  Notary Public



















                                       21
<PAGE>

<PAGE>
     

     STATE OF NEW JERSEY )
                         ) ss:
     COUNTY OF           )
               -------

               Before me, the undersigned, a Notary Public in and for said
     County and State on this      day of             , 19  , personally
                              ----        ------------    --
     appeared                   to me known to be the identical person who
              -----------------
     subscribed the name of the maker thereof to the foregoing instrument
     as its         President and acknowledged to me that                 
            -------                                       ----------------
     executed the same as his free and voluntary act and deed and as the
     free and voluntary act and deed of PRUCO LIFE INSURANCE COMPANY for
     the uses and purposes therein set forth.

               Given under my hand and seal of office the day and year last
     above written.

     My commission expires                                           
                          -------------    --------------------------
                                                  Notary Public




     STATE OF NEW JERSEY )
                         ) ss:
     COUNTY OF           )
               -------

               Before me, the undersigned, a Notary Public in and for said
     County and State on this      day of             , 19  , personally
                              ----        ------------    --
     appeared                   to me known to be the identical person who
              -----------------
     subscribed the name of the maker thereof to the foregoing instrument
     as its         President and acknowledged to me that                 
            -------                                       ----------------
     executed the same as his free and voluntary act and deed and as the
     free and voluntary act and deed of PRUSUPPLY, INC., for the uses and
     purposes therein set forth.

               Given under my hand and seal of office the day and year last
     above written.

     My commission expires                                           
                          -------------    --------------------------
                                                  Notary Public






















                                       22



<PAGE>
     


                                VOTING AGREEMENT


               This Agreement, dated the 14th day of December, 1993, is by
     and among SANTA FE ENERGY RESOURCES, INC., a Delaware corporation with
     its executive offices located at 1616 South Voss Road, Suite No. 1000,
     Houston, Texas 77057 ("SFER"), SFER PIPELINE, INC., a Delaware
     corporation and a wholly-owned subsidiary of SFER ("Pipeline"), and
     THE PRUDENTIAL INSURANCE COMPANY OF AMERICA, a New Jersey mutual
     insurance company with its executive offices located at 100 Mulberry
     Street, Newark, New Jersey 07102 ("Prudential Insurance"), PRUCO LIFE
     INSURANCE COMPANY, an Arizona corporation ("Pruco"), and PRUSUPPLY,
     INC., a Delaware corporation ("PruSupply" and, together with
     Prudential Insurance and Pruco, being collectively referred to herein
     as "Prudential").

                                R E C I T A L S:
                                ---------------
               WHEREAS, pursuant to that certain Agreement of Merger (the
     "Merger Agreement"), dated as of July 28, 1993, as amended, among
     Hadson Corporation ("Hadson"), SFER and Adobe Gas Pipeline Company, a
     wholly-owned subsidiary of Pipeline ("AGPC"), AGPC will be merged (the
     "Merger") with and into Hadson, and, pursuant to the Merger Agreement,
     Hadson will issue to Pipeline and Prudential (in addition to the other
     stockholders of Hadson) the number of shares of common stock, par
     value $0.01 per share, of Hadson (the "New Hadson Common Stock")
     specified in Section 2.7 of the Merger Agreement; and

               WHEREAS, as result of the Merger, Prudential will, among
     other things, receive the right to receive 97.27% of a beneficial
     interest in a trust (the "HP Trust") which will contain 4,983,180
     shares of New Hadson Common Stock (the "Trust Shares") in exchange for
     its existing Class B Common Stock, approximately 756,104 shares of New
     Hadson Common Stock in exchange for its existing Class C Common Stock;
     20,001 shares of New Hadson Common Stock in exchange for 300,000
     shares of existing Hadson Common Stock; approximately 553,686
     additional shares of New Hadson Common Stock, and the right to receive
     the remaining 2.73% of a beneficial interest in the HP Trust; and
     certain other consideration in exchange for its 7% Senior Cumulative
     Preferred Stock of Hadson; and

               WHEREAS, immediately upon the consummation of the Merger,
     Hadson will deposit the Trust Shares into the H/P Trust, a trust of
     which Prudential will be a beneficiary and Prudential






























<PAGE>

<PAGE>
     

     will be entitled to direct the voting of certain of the Trust Shares;
     and

               WHEREAS, immediately upon the consummation of the Merger,
     the total number of members of the whole Board of Directors of Hadson
     (the "Board of Directors") will consist of eight persons divided into
     three classes, seven of such positions to be filled immediately after
     the Merger and the remaining position to be vacant pending selection
     by the Board of Directors of a Chief Executive Officer of Hadson, who
     is expected to fill such vacancy; and

               WHEREAS, in connection with the Merger each of SFER,
     Pipeline and Prudential have agreed, on the terms and subject to the
     conditions set forth herein, to vote for and to grant to the other
     party a proxy to vote the shares of New Hadson Common Stock held by
     them for certain nominees to the Board of Directors, all as more fully
     set forth in this Agreement;

               NOW, THEREFORE, in consideration of the foregoing, and for
     other good and valuable consideration, the receipt and sufficiency of
     which are hereby acknowledged, the parties hereto agree as follows:

               1.   ELECTION OF DIRECTORS

               (a)  During the term of this Agreement (as set forth in
     Section 5 hereof), at any time when one or more directors of Hadson
     are to be elected by stockholders, SFER will be entitled to designate,
     by written notice to Prudential, for election to Hadson's Board of
     Directors at such special or annual meeting of stockholders at which
     such directors are to be elected by the holders of shares of New
     Hadson Common Stock, or for election by written consent of such
     holders, to Hadson's Board of Directors, such number of persons as is
     necessary so that, after giving effect to the election of such
     person(s), all persons designated by SFER for election to Hadson's
     Board of Directors will represent fifty percent (50%) of the total
     number of persons constituting the whole Board of Directors
     immediately after such election, such designation to be effected in
     such a manner as to provide, subject to the terms of Hadson's
     certificate of incorporation and bylaws, as then amended and in
     effect, that at least one person designated by SFER pursuant to this
     Section 1(a) will be designated to serve as a member of each class of
     directors of the Board of Directors.

               (b)  During the term of this Agreement, at any time when one
     or more directors of Hadson are to be elected by





























                                        2
<PAGE>

<PAGE>
     

     stockholders, Prudential will be entitled to designate by written
     notice to SFER, for election to Hadson's Board of Directors at such
     special or annual meeting of stockholders at which such directors are
     to be elected by the holders of shares of New Hadson Common Stock, or
     for election by written consent of such holders, to Hadson's Board of
     Directors, one person to serve as a member of Hadson's Board of
     Directors, such designation to be effected in such a manner as to
     provide that after giving effect to the election of such person, one
     person (and only one person) designated by Prudential for election to
     Hadson's Board of Directors will, subject to the terms of Hadson's
     certificate of incorporation and by-laws, as then amended and in
     effect, be a member of Hadson's Board of Directors serving in Class I
     of such Board.

               (c)  Until the first to occur of (i) the date of the Annual
     Meeting of Stockholders of Hadson to be held in 1996 (the "1996 Annual
     Meeting"), (ii) the inability of Prudential and SFER, despite their
     respective reasonable best efforts in good faith, to agree upon a
     designee to fill a vacancy in the Hadson Board of Directors caused by
     the death, disability, retirement, resignation or removal of J.
     Michael Adcock (or a person theretofore designated pursuant to this
     Section 1(c) as a successor to Mr. Adcock (a "Successor")) prior to
     the 1996 Annual Meeting, and (iii) the termination of this Agreement,
     if at any time prior to the 1996 Annual Meeting a vacancy shall exist
     in Hadson's Board of Directors, which vacancy is caused by the death,
     disability, retirement, resignation or removal of Mr. Adcock or any
     Successor, Prudential and SFER will be entitled to jointly designate,
     by written notice acknowledged by both Prudential and SFER, for
     election to Hadson's Board of Directors at any special or annual
     meeting of stockholders at which directors are to be elected by the
     holders of New Hadson Common Stock, or for election by written consent
     in lieu of a meeting, which special or annual meeting or written
     consent is effective prior to the 1996 Annual Meeting, one person to
     serve as a member of Hadson's Board of Directors to fill such vacancy
     as a member of Class III of Hadson's Board of Directors until the 1996
     Annual Meeting.  The designation by Prudential and SFER in accordance
     with the preceding sentence shall be effected in such a manner as to
     provide, subject to Hadson's restated certificate of incorporation and
     bylaws, as then amended and in effect, that after giving effect to the
     election of such person, one person designated jointly by Prudential
     and SFER for election to Hadson's Board of Directors will be
     designated as a Class III member of Hadson's Board of Directors until
     the 1996 Annual Meeting (Prudential and SFER acknowledge that, upon
     consummation of the Merger, Mr. Adcock will constitute such a joint
     designee





























                                        3
<PAGE>

<PAGE>
     

     for purposes of this Section 1(c)).  Notwithstanding the foregoing,
     Prudential and SFER acknowledge and agree that if a vacancy in
     Hadson's Board of Directors occurs prior to the 1996 Annual Meeting by
     reason of the death, disability, retirement, resignation or removal of
     Mr. Adcock (or a Successor) and if, despite the reasonable best
     efforts in good faith of Prudential and SFER, Prudential and SFER are
     unable within 45 days after such vacancy first occurs to jointly agree
     upon a Successor designee, each of Prudential and SFER shall be free
     to vote their respective shares of New Hadson Common Stock in favor of
     the person of their choice to fill such vacancy.

               (d)  Each of SFER, Pipeline and Prudential agrees to vote
     the shares of New Hadson Common Stock held by it or by any of its
     Affiliates to call and attend any and all annual and special meetings
     of the Hadson stockholders at which directors are to be elected and to
     vote their respective shares of New Hadson Common Stock at such
     meeting or to execute and deliver written consents in connection with
     the election of directors by written consent of stockholders in lieu
     of a meeting in such a manner as to (i) elect its own designee(s) to
     the Board of Directors of Hadson as are designated in accordance with
     this Agreement, (ii) elect the designee(s) to the Board of Directors
     of Hadson of the other party hereto as are designated in accordance
     with this Agreement, and (iii) to elect any joint designee to the
     Board of Directors of Hadson as may be mutually agreed upon by SFER
     and Prudential pursuant to Section 1(c) hereof.  SFER and Prudential
     will each cause the persons designated by it for election for the
     Board of Directors to timely provide to Hadson such information as is
     required in order to enable Hadson to fulfill its obligations pursuant
     to applicable requirements of the U.S. Federal securities laws.

               (e)  Notwithstanding anything in this Agreement to the
     contrary, SFER, Pipeline and Prudential each expressly acknowledge
     that it is the intention of the parties hereto that this Agreement
     will become effective, and the parties will each take any and all
     necessary actions, so that the composition of the Board of Directors
     will be as contemplated by this Section 1 immediately following the
     consummation of the Merger.

               2.   VACANCIES

               If, as a result of death, disability, retirement,
     resignation, removal or otherwise there shall exist or occur any
     vacancy in any directorship on the Board of Directors which SFER or
     Prudential is individually, or which SFER and Prudential acting
     jointly, are entitled to designate under Section 1 above





























                                        4
<PAGE>

<PAGE>
     

     each party hereto agrees to use its reasonable best efforts to cause
     the remaining members of the Board of Directors to fill such vacancy
     with a candidate designated by SFER or Prudential by written notice to
     the other party or, in the case of a joint director designated in
     accordance with Section 1(c), by written notice acknowledged by both
     Prudential and SFER, as the case may be, so as to restore the
     composition of the Board of Directors to that contemplated by Section
     1 above as promptly as practicable (provided, however, that any former
     director who was removed from office shall not thereafter be
     designated a director by either SFER or Prudential).  Notwithstanding
     the foregoing, if the Board of Directors fails to fill such vacancy
     within five business days after being advised by SFER or Prudential or
     both such parties, as the case may be, of the designee for such
     vacancy, then each of SFER, Pipeline and Prudential agrees to take
     such action, including, without limitation, executing written consents
     or calling and voting at a special meeting of stockholders, as may
     reasonably be necessary to restore the composition of the Board of
     Directors to that contemplated by Section 1 above as promptly as
     practicable, but in no event later than 60 days (subject to applicable
     U.S. federal securities laws).

               3.   ADDITIONAL OBLIGATIONS OF SFER AND PRUDENTIAL

               During the term of this Agreement, Prudential and SFER shall
     use their respective reasonable best efforts to assure that the total
     number of directors constituting Hadson's whole Board of Directors
     remains an even number and is never less than six.

               4.   LIMITED IRREVOCABLE PROXIES

               (a)  SFER and Pipeline, jointly and severally, hereby
     irrevocably designate and appoint Prudential, for and on behalf of
     SFER and Pipeline and in each of their names, places and stead, as
     each of their true and lawful proxy and attorney-in-fact to call any
     special meetings of Hadson's stockholders and to attend any and all
     annual and special meetings of the Hadson stockholders at which
     directors are to be elected and to vote, or to act by written consent
     in lieu of a vote or meeting, any and all shares of New Hadson Common
     Stock that SFER or Pipeline may own during the term of this Agreement
     (i) in such a manner as to cause the person designated by Prudential
     in accordance with Section 1(b) hereof and any person jointly
     designated by Prudential and SFER in accordance with Section 1(c)
     hereof, to be elected as members of Hadson's Board of Directors, (ii)
     against any amendment to Section 3.03 of the bylaws of Hadson in
     accordance with Article 7 of Hadson's restated certificate of
     incorporation as in effect immediately following the Merger and




























                                        5
<PAGE>

<PAGE>
     

     against any proposed amendment to Article 7 of Hadson's restated
     certificate of incorporation, and (iii) to call a special meeting of
     stockholders if reasonably necessary under Section 2 hereof; provided,
     however, that the foregoing designation by SFER and Pipeline of
     Prudential as their attorney-in-fact and proxy is solely for the
     limited purposes of permitting Prudential to vote, or to act by
     written consent in lieu of a vote or meeting, such shares of New
     Hadson Common Stock in favor of the election of Prudential's designee
     to Hadson's Board of Directors as contemplated in Section 1(b) hereof
     and the person jointly designated by Prudential and SFER in accordance
     with Section 1(c) hereof, to vote, or to act by written consent in
     lieu of a vote or meeting, such shares against any amendment to
     Section 3.03 of the bylaws and any proposed amendment to Article 7 of
     the restated certificate of incorporation and to call a special
     meeting of the stockholders if reasonably necessary under Section 2
     hereof, and may be exercised or otherwise utilized by Prudential at
     any meeting of Hadson's stockholders (or by written consent in lieu of
     a meeting) only if SFER or Pipeline fails or refuses to vote its
     shares of New Hadson Common Stock at such meeting, or to act by
     written consent in lieu of a vote or meeting, with respect to the
     matters for which proxies are granted hereunder.

               (b)  Prudential hereby irrevocably designates and appoints
     SFER, for and on behalf of Prudential and in its name, place and
     stead, as Prudential's true and lawful proxy and attorney-in-fact to
     call any special meetings of Hadson's stockholders and to attend any
     and all annual and special meetings of the Hadson stockholders at
     which directors are to be elected and to vote (or in the case of any
     Trust Shares in which Prudential has a beneficial interest, to direct
     the trustee to vote such shares), or to act by written consent in lieu
     of a vote or meeting, any and all shares of New Hadson Common Stock
     that Prudential may own during the term of this Agreement, (i) in such
     a manner as to cause the persons designated by SFER in accordance with
     Section 1(a) hereof and the person jointly designated by Prudential
     and SFER in accordance with Section 1(c) hereof, to be elected as
     members of Hadson's Board of Directors, (ii) against any amendment to
     Section 3.03 of the bylaws of Hadson in accordance with Article 7 of
     Hadson's restated certificate of incorporation as in effect
     immediately following the Merger and against any proposed amendment to
     Article 7 of Hadson's restated certificate of incorporation, and (iii)
     to call a special meeting of stockholders, if reasonably necessary,
     under Section 2 hereof; provided, however, that the foregoing
     designation by Prudential of SFER as Prudential's attorney-in-fact and
     proxy is solely for the limited purposes of permitting SFER to vote,
     or to act by





























                                        6
<PAGE>

<PAGE>
     

     written consent in lieu of a vote or meeting, such shares of New
     Hadson Common Stock in favor of the election of its designees to
     Hadson's Board of Directors as contemplated in Section 1(a) hereof and
     the person jointly designated by Prudential and SFER in accordance
     with Section 1(c) hereof, to vote, or to act by written consent in
     lieu of a vote or meeting, such shares against any amendment to
     Section 3.03 of the bylaws and any proposed amendment to Article 7 of
     the restated certificate of incorporation and to call a special
     meeting of the stockholders if reasonably necessary under Section 2
     hereof, and may be exercised or otherwise utilized by SFER at any
     meeting of Hadson's stockholders (or by written consent in lieu of a
     meeting), only if Prudential fails or refuses to vote (or to direct
     the trustee under the Trust Agreement to vote) its shares of New
     Hadson Common Stock at such meeting, or to act by written consent in
     lieu of a vote or meeting, with respect to the matters for which
     proxies are granted hereunder.

               (c)  Notwithstanding the terms of Sections 4(a) and (b)
     hereof, SFER, Pipeline and Prudential shall each be free at any time
     and from time to time to sell, transfer or otherwise dispose of any
     and all shares of New Hadson Common Stock that such person may own,
     and agree that the trustee may classify Trust Shares and may transfer
     and deliver Trust Shares to Prudential upon termination of the Trust,
     and to Hadson for cancellation, each in accordance with the Trust
     Agreement, and, upon any and each such sale, transfer or disposition
     (other than any sale, transfer or disposition to an Affiliate (as
     defined below) of SFER, Pipeline or Prudential, as the case may be),
     the proxy granted pursuant to Section 4(a) or (b) hereof in respect of
     the shares of New Hadson Common Stock so sold, transferred or
     otherwise disposed of shall terminate.  For purposes hereof, Affiliate
     shall mean, with respect to a specified person, any person that
     directly or indirectly through one or more intermediaries, controls or
     is controlled by or under common control with the person specified. 
     In furtherance of the foregoing, each of Pipeline, SFER and Prudential
     agrees not to transfer any shares of New Hadson Common Stock to an
     Affiliate unless the Affiliate becomes a party to this Agreement.

               (d)  The proxies granted pursuant to Sections 4(a) and (b)
     hereof are personal and may not be transferred or assigned, in whole
     or in part (by operation of law or otherwise) to any other person or
     persons without the prior written consent of the party granting such
     proxy, except to an Affiliate of the party receiving such proxy.
































                                        7
<PAGE>

<PAGE>
     

               (e)  Each of SFER and Pipeline represents and warrants to
     Prudential that (i) each of SFER and Pipeline has duly authorized,
     executed and delivered this Agreement and this Agreement constitutes a
     valid and binding agreement, enforceable against it in accordance with
     its terms, and neither the execution and delivery of this Agreement
     nor the performance by SFER or Pipeline of the transactions
     contemplated hereby will constitute a violation of, a default under,
     or conflict with any contract, commitment, agreement, understanding,
     arrangement or restriction of any kind to which SFER or Pipeline is a
     party or by which SFER or Pipeline is bound; (ii) consummation by each
     of SFER and Pipeline of the transactions contemplated hereby will not
     violate, or require any consent, approval, or notice under any
     provision of law other than a filing on Form 13D or Form 13G or any
     other form that may be required under the Securities Exchange Act of
     1934, as amended (the "Exchange Act"); and (iii) upon consummation of
     the Merger, each of SFER and Pipeline will have the power and right to
     vote all of the shares of New Hadson Common Stock that it will receive
     upon consummation of the Merger as contemplated herein.

               (f)  Prudential represents and warrants to SFER and Pipeline
     that (i) Prudential has duly authorized, executed and delivered this
     Agreement and this Agreement constitutes a valid and binding
     agreement, enforceable against it in accordance with its terms, and
     neither the execution and delivery of this Agreement nor the
     performance by Prudential of the transactions contemplated hereby will
     constitute a violation of, a default under, or conflict with any
     contract, commitment, agreement, understanding, arrangement or
     restriction of any kind to which Prudential is a party or by which
     Prudential is bound; (ii) consummation by Prudential of the
     transactions contemplated hereby will not violate, or require any
     consent, approval, or notice under any provision of law other than a
     filing on Form 13D or Form 13G or any other form that may be required
     under the Exchange Act; and (iii) upon consummation of the Merger,
     Prudential will have the power and right to vote all of the shares of
     New Hadson Common Stock that it will receive upon consummation of the
     Merger, and will have the power and right to direct the Trustee to
     vote the Trust Shares with respect to which Prudential is the
     beneficial owner.

               (g)  SFER, PIPELINE AND PRUDENTIAL EACH AGREES THAT THE
     PROXIES AND ALL OTHER POWER AND AUTHORITY INTENDED TO BE CONFERRED
     PURSUANT TO SECTIONS 4(a) AND (b) HEREOF HEREBY ARE IN EACH CASE
     COUPLED WITH AN INTEREST SUFFICIENT IN LAW TO SUPPORT AN IRREVOCABLE
     GRANT AND POWER, AND THEREFORE ARE IRREVOCABLE.






























                                        8
<PAGE>

<PAGE>
     

               5.   TERM

               This Agreement shall be effective immediately upon
     consummation of the Merger (the date thereof, the "Effective Date"),
     and continue for a term of 10 years, provided that this Agreement
     shall earlier terminate at such time as Prudential no longer
     beneficially owns (as defined in Rule 13d-3 under the Exchange Act) at
     least 756,100 shares of the New Hadson Common Stock.

               6.   SPECIFIC PERFORMANCE

               Each of SFER, Pipeline and Prudential acknowledges that:

               (a)  the actions to be taken by it under the provisions of
     this Agreement are of a special character;


               (b)  such actions are impossible or impracticable to
     replace;

               (c)  the other parties to this Agreement may be damaged if
     the provisions hereof are not specifically enforced; and

               (d)  the award of monetary damages may not adequately
     protect any party in the event of a breach hereof by any other party
     or parties.

     By virtue thereof, each of SFER, Pipeline and Prudential agrees and
     consents that if it breaches any of the provisions of this Agreement,
     the injured party or parties, in addition to any other rights and
     remedies available under this Agreement or otherwise, shall (without
     any bond or other security being required and without the necessity of
     proving monetary damages) be entitled to a temporary and/or permanent
     injunction to be issued by a court of competent jurisdiction
     restraining the breaching party from committing or continuing any
     violation of this Agreement, or any other appropriate decree of
     specific performance.  Such remedies shall not be exclusive and shall
     be in addition to any other remedy which any of them may have.

               7.   MISCELLANEOUS

               (a)  Governing Law.  Except to the extent that the matters
                    -------------
     set forth herein are governed by the Delaware General Corporation Law
     (the "Delaware Act"), in which case such matters shall be governed by
     and construed in accordance with the




























                                        9
<PAGE>

<PAGE>
     

     Delaware Act, this Agreement shall be governed by and construed in
     accordance with the laws of the State of New York, without regard to
     principles governing conflicts of law.

               (b)  Amendment; Termination.  This Agreement cannot be
                    ----------------------
     amended or terminated orally, but only by an agreement in writing
     signed by the party or parties against whom enforcement of any waiver,
     amendment, modification or discharge is sought.

               (c)  Execution in Counterparts.  This Agreement may be
                    -------------------------
     signed in one or more counterparts, each of which shall be an
     original, but all of which together shall constitute one instrument.

               (d)  Severability.  If any term, provision, covenant or
                    ------------
     restriction of this Agreement, or the application thereof to any
     circumstance shall, to any extent, be held by a court of competent
     jurisdiction to be invalid, void or unenforceable, the remainder of
     the terms, provisions, covenants and restrictions of this Agreement or
     the application thereof to any other circumstance, shall remain in
     full force and effect, shall not in any way be affected, impaired or
     invalidated, and shall be enforced to the fullest extent permitted by
     law.

               (e)  Notices.  All communications provided for herein shall
                    -------
     be in writing, and shall be addressed to the relevant party at the
     following addresses:

                    (i)  if to SFER or Pipeline, at:

                         Santa Fe Energy Resources, Inc.
                         1616 South Voss Road
                         Suite No. 1000
                         Houston, Texas  77057
                         Attn:  Senior Vice President/General
                         Counsel
                         Fax No.:  (713) 268-5341

                    (ii) if to Prudential, at:

                         Prudential Capital Group
                         100 Mulberry Street
                         Gateway Center 4, 10th Floor
                         Newark, New Jersey 07102
                         Attn:     Joseph Y. Alouf
                                   Vice President
                         Fax No.:  (201) 802-2333
                              cc: Jack L. Pfeilsticker























                                       10
<PAGE>

<PAGE>
     

               (f)  Entire Agreement; Headings.  This Agreement embodies
                    --------------------------
     the entire agreement and understanding among the parties relating to
     the subject matter hereof and supersedes all prior agreements and
     understanding relating to the subject matter hereof.  The headings in
     this Agreement are for purposes of reference only and shall not limit
     or otherwise affect the meaning hereof.

               IN WITNESS WHEREOF, the parties have executed this Agreement
     as of the date first above written.


                              SANTA FE ENERGY RESOURCES,
                               INC.


                              By: /s/ J.L. Payne            
                                  --------------------------
                                  Name:  J.L. Payne
                                  Title: President


                              SFER PIPELINE, INC.


                              By: /s/ J.L. Payne            
                                  --------------------------
                                  Name:  J.L. Payne
                                  Title: President


                              THE PRUDENTIAL INSURANCE
                               COMPANY OF AMERICA


                              By: /s/ David Descalzi        
                                  --------------------------
                                  Name:  David Descalzi
                                  Title: Vice President


                              PRUCO LIFE INSURANCE
                               COMPANY


                              By: /s/ David Descalzi        
                                  --------------------------
                                  Name:  David Descalzi
                                  Title: Vice President

























                                       11
<PAGE>

<PAGE>
     

                              PRUSUPPLY, INC.


                              By: /s/ Judith Somerstein     
                                  --------------------------
                                  Name:  Judith Somerstein
                                  Title:  Vice President



































































                                       12



<PAGE>
     


                          REGISTRATION RIGHTS AGREEMENT



          REGISTRATION RIGHTS AGREEMENT, dated as of December 14, 1993,
     among The Prudential Insurance Company of America, PruSupply, Inc. and
     Pruco Life Insurance Company (collectively, "Prudential", and each
     individually, a "Prudential Entity"), Santa Fe Energy Resources, Inc.,
     a Delaware corporation ("Santa Fe"), Hadson Corporation, a Delaware
     corporation (the "Company"), and SFER Pipe-Line, Inc., a Delaware
     corporation ("Pipeline," and collectively with Santa Fe, "SFER").

               1.   Background.  This Agreement is made pursuant to (i) the
                    ----------
     Agreement of Merger dated as of July 28, 1993 among SFER, Adobe Gas
     Pipeline Company, a Delaware corporation and a wholly owned subsidiary
     of SFER, and the Company (as amended, the "Merger Agreement") and (ii)
     the Securities Purchase Agreement of even date herewith by and among
     the Company and each Prudential Entity (the "Purchase Agreement"). 
     Pursuant to the Merger Agreement, upon consummation of the Merger (as
     defined therein), the Company shall issue to SFER 2,080,000 shares of
     Senior Cumulative Preferred Stock, Series A, par value $0.01 per share
     (the "Senior Preferred Stock") and a number of shares of new Common
     Stock, par value $0.01 per share, of the Company (the "New Common
     Stock"), as is equal to approximately 40% of the total number of
     shares of New Common Stock outstanding after giving effect to the
     Merger.

               Prudential holds all of the existing shares of the Company's
     Class B Common Stock, par value $.01 per share, the Company's Class C
     Common Stock, par value $.01 per share and the Company's 7% Senior
     Cumulative Preferred Stock (respectively, the "Existing Class B Common
     Stock", the "Existing Class C Common Stock" and the "Existing Senior
     Preferred Stock").  Prudential also holds 300,000 shares of the
     Company's existing Common Stock, par value $.01 per share (the "Old
     Common Stock").

               As a result of the Merger, Prudential will receive the right
     to receive 97.27% of a beneficial interest in a trust (the "H/P
     Trust") containing 4,983,180 shares of New Common Stock (such shares,
     the "Trust Shares") in exchange for its Existing Class B Common Stock;
     approximately 756,104 shares of New Common Stock in exchange for its
     Existing Class C Common Stock; and approximately 553,658 shares of New
     Common Stock, the right to receive the remaining 2.73% of a beneficial
     interest in the H/P Trust, and $33 million aggregate principal amount
     of new 8% Senior Secured Notes of the Company in exchange for its
     Existing Senior Preferred Stock; and will receive 20,001 shares of New
     Common Stock and certain shares of Junior Exercisable Automatically
     Convertible Preferred Stock, Series B, par value

























<PAGE>

<PAGE>
     

     $.01 per share (the "Junior Preferred Stock"), in exchange for its
     300,000 shares of Old Common Stock.

               As a material part of the inducement to SFER to enter into
     the Merger Agreement, and to each Prudential Entity to enter into the
     Purchase Agreement, the Company has agreed to provide the registration
     rights set forth in this Agreement.  This Agreement shall become
     effective upon the occurrence of both (a) the issuance of the shares
     of Senior Preferred Stock and New Common Stock to SFER pursuant to the
     Merger Agreement and (b) the issuance of the New Common Stock and
     other Merger consideration to each Prudential Entity pursuant to the
     Merger.

               2.   Registration under Securities Act, etc.
                    --------------------------------------
               2.1. Registration on Request.  (a)  Upon the written request
                    -----------------------
     of SFER or any one or more of the Prudential Entities (this and other
     defined terms have the meanings specified in Section 3 hereof),
     requesting that the Company effect the registration under the
     Securities Act of all or part of Registrable Securities held by them
     and specifying the intended method of disposition thereof and whether
     or not such requested registration is to be an underwritten offering,
     the Company will promptly give written notice of such requested
     registration to all other holders of Registrable Securities and
     thereupon the Company will use its best efforts to effect the
     registration under the Securities Act of:

                    (i)  the Registrable Securities which the Company has
          been so requested to register by such holders, and 

                    (ii) all additional Registrable Securities which the
          Company has been requested to register by the holders thereof by
          written request given to the Company within 30 days after the
          giving of such written notice by the Company (which request shall
          specify the intended method of disposition of such Registrable
          Securities),

     all to the extent required to permit the disposition (in accordance
     with the intended methods thereof) of the Registrable Securities so to
     be registered; provided, however, that: (A) Prudential (including for
                    --------  -------
     this purpose, any assignee of all Registrable Securities owned by any
     Prudential Entity) shall be entitled to request such registration of
     its New Common Stock only once in any twelve month period, SFER (or
     any assignee of all Registrable Securities of any class or series
     owned by SFER) shall be entitled to request such registration of its
     New Common Stock only once in any twelve month period, and SFER (or
     any assignee of all Registrable Securities of any class or series
     owned by SFER) shall be entitled to request such registration of its
     Senior Preferred Stock only once in any twelve month period and (B)
     with respect to any registration statement filed, or to






















                                        2
<PAGE>

<PAGE>
     

     be filed, pursuant to this Section 2.1, if the Board of Directors of
     the Company determines, in its good faith judgment, that the
     registration of such Registrable Securities would materially and
     adversely impact any material financing activity (the "Disadvantageous
     Condition"), notwithstanding any other provision of this Section 2.1,
     upon the giving of a written notice to such effect to holders of
     Registrable Securities, the Company (1) in the event that the
     registration statement has been filed, shall be entitled to cause such
     registration statement to be withdrawn and shall be entitled to not
     file a substitute registration statement and (2) in the event no
     registration statement has yet been filed, shall be entitled to not
     file any such registration statement, in either case until the earlier
     of (the "Resumption Date") (i) the expiration of a reasonable period
     not to exceed 120 days or (ii) the date on which the Board of
     Directors of the Company determines the Disadvantageous Condition no
     longer exists.  The Company shall promptly deliver written notice of
     the Resumption Date to each holder of the Registrable Securities.  If,
     as a result of a Disadvantageous Condition,  a registration statement
     was withdrawn or was not filed, the Company shall use its best efforts
     to effect the registration under the Securities Act, as promptly as
     reasonably practicable after the Resumption Date, of the Registrable
     Securities included or to be included in such registration statement,
     unless the holder requesting such registration by written notice (a
     "Withdrawal Notice") to the Company requests that the Company not
     effect such registration.  If a holder delivers a Withdrawal Notice to
     the Company, the holder's original request for registration of its
     Registrable Securities (which was delayed as a result of the existence
     of a Disadvantageous Condition) shall not be included in determining
                                           ---
     whether a request for registration has been given in any twelve month
     period.

               (b)  Registration of Other Securities.  Whenever the Company
                    --------------------------------
     shall effect a registration pursuant to this Section 2.1 in connection
     with an underwritten offering by one or more holders of Registrable
     Securities, no securities other than Registrable Securities shall be
     included among the securities covered by such registration unless (a)
     the managing underwriter of such offering shall have advised each
     holder of Registrable Securities to be covered by such registration in
     writing that the inclusion of such other securities would not
     adversely affect such offering and (b) the holders of all Registrable
     Securities to be covered by such registration shall have consented in
     writing to the inclusion of such other securities.

               (c)  Registration Statement Form.  Registrations under this
                    ---------------------------
     Section 2.1 shall be on such appropriate registration form of the
     Commission (i) as shall be selected by the Company and as shall be
     reasonably acceptable to each holder of the Registrable Securities
     requested to be included in such registration and (ii) as shall permit
     the disposition of such Registrable Securities in






















                                        3
<PAGE>

<PAGE>
     

     accordance with the intended method or methods of disposition
     specified in their request for such registration.  The Company agrees
     to include in any such registration statement all information which
     holders of Registrable Securities being registered shall reasonably
     request.

               (d)  Expenses.  The Company will pay all Registration
                    --------
     Expenses in connection with (i) the first two registrations of Senior
     Preferred Stock by SFER, (ii) the first two registrations of New
     Common Stock requested by SFER, and (iii) the first two registrations
     of New Common Stock requested by Prudential, pursuant to Section
     2.1(a).  The Registration Expenses (and underwriting discounts and
     commissions and transfer taxes, if any) in connection with each other
     registration requested under this Section 2.1 shall be allocated among
     all Persons on whose behalf securities of the Company are included in
     such registration, on the basis of the respective amounts of the
     securities then being registered on their behalf.

               (e)  Effective Registration Statement.  A registration
                    --------------------------------
     requested pursuant to this Section 2.1 shall not be deemed to have
     been effected (i) unless a registration statement with respect thereto
     has become effective, (ii) if, after it has become effective, such
     registration is interfered with by any stop order, injunction or other
     order or requirement of the Commission or other governmental agency or
     court for any reason, (iii) if, after it has become effective, such
     registration does not remain effective for 120 days or such lesser
     time period sufficient to permit the sale of the Registrable
     Securities registered thereby in accordance with the intended method
     of distribution, or (iv) if the conditions to closing specified in the
     purchase agreement or underwriting agreement entered into in con-
     nection with such registration are not satisfied or waived.

               (f)  Selection of Underwriters.  If a requested registration
                    -------------------------
     pursuant to this Section 2.1 involves an underwritten offering, the
     underwriter or underwriters thereof shall be selected by the Company
     and shall be reasonably acceptable to each holder of Registrable
     Securities to be so registered.

               (g)  Priority in Requested Registrations.  If (i) a
                    -----------------------------------
     requested registration pursuant to this Section 2.1 involves an
     underwritten offering of the securities so being registered (on a firm
     commitment basis) by or through one or more underwriters of recognized
     standing under underwriting terms appropriate for such a transaction
     and (ii) the managing underwriter shall advise the Company in writing
     (with a copy to each holder of Registrable Securities requesting
     registration) that, in its opinion, the number of securities requested
     to be included in such registration exceeds the number which can be
     sold in (or during the time of) such offering without having a
     material adverse effect thereon (including on the price at which such
     Registrable




















                                        4
<PAGE>

<PAGE>
     

     Securities are expected to be sold), then the Company will include in
     such registration, to the extent of the number of shares which the
     Company is so advised can be sold in (or during the time of) such
     offering, first, all securities requested by Prudential and SFER
     pursuant to Section 2.1(a) to be sold for its own account and second,
     all other Registrable Securities requested to be included in such
     registration on the basis of the percentage of the Registrable
     Securities of the Company held by the holders of Registrable
     Securities which have requested that such Securities be included.  In
     connection with any registration as to which the provisions of this
     clause (g) apply, no securities other than Registrable Securities
     shall be covered by such registrations.

               2.2. Incidental Registration.  (a)  Right to Include
                                                   ----------------
     Registrable Securities.  If the Company at any time proposes to
     ----------------------
     register any of its securities under the Securities Act (other than by
     a registration on Form S-8 or any successor or similar forms and other
     than pursuant to Section 2.1), whether or not for sale for its own
     account, it will each such time give prompt written notice to all
     holders of Registrable Securities of its intention to do so describing
     such securities and specifying the form and manner and the other
     relevant facts involved in such proposed registration (including,
     without limitation, in the case of an underwriting, the identity of
     the managing underwriter and whether such offering will be pursuant to
     a "best efforts" or "firm commitment" underwriting) and of such
     holders' rights under this Section 2.2.  Upon the written request of
     any holder made within 30 days after the receipt of any such notice
     (which request shall specify the intended method of disposition of
     such holder's Registrable Securities), the Company will use its best
     efforts to effect the registration under the Securities Act of the
     Registrable Securities of such holder requested to be included in such
     registration, to the extent requisite to permit the disposition (in
     accordance with the intended methods thereof as aforesaid) of such
     Registrable Securities, provided that if, at any time after giving
                             --------
     written notice of its intention to register any securities and prior
     to the effective date of the registration statement filed in
     connection with such registration, the Company shall determine for any
     reason not to register or to delay registration of such securities
     initially intended to be registered, the Company may, at its election,
     give written notice of such determination to each holder of
     Registrable Securities and, thereupon, (i) in the case of a
     determination not to register, shall be relieved of its obligation to
     register Registrable Securities in connection with such registration
     (but not from its obligation to pay the Registration Expenses in
     connection therewith), without prejudice, however, to the rights of
     any holder or holders of Registrable Securities entitled to do so to
     request that such registration be effected as a registration under
     Section 2.1, and (ii) in the case of a determination to delay
     registering, shall






















                                        5
<PAGE>

<PAGE>
     

     be permitted to delay registering any Registrable Securities for the
     same period as the delay in registering such other securities.  No
     registration effected under this Section 2.2 shall be deemed to have
     been effected pursuant to Section 2.1 or shall relieve the Company of
     its obligation to effect any registration upon request under Section
     2.1.  The Company will pay all Registration Expenses, other than
     registration fees relating to Registrable Securities to be sold for
     the account of the holder thereof and the fees and expenses of counsel
     for such holder, all of which will be at such holder's expense, in
     connection with each registration of Registrable Securities requested
     pursuant to this Section 2.2.

               (b)  Priority in Incidental Registrations.  If (i) a
                    ------------------------------------
     registration pursuant to this Section 2.2 involves an underwritten
     offering of the securities so being registered, whether or not for
     sale for the account of the Company, to be distributed (on a firm
     commitment basis) by or through one or more underwriters of recognized
     standing under underwriting terms appropriate for such a transaction,
     (ii) the Company is requested to include any Registrable Securities
     under 2.2(a), and (iii) the managing underwriter of such underwritten
     offering shall inform the Company and the holders of the Registrable
     Securities requesting such registration by letter of its belief that
     the number of securities requested to be included in such registration
     exceeds the number which can be sold in (or during the time of) such
     offering, then the Company will include in such registration, to the
     extent of the number which the Company is so advised can be sold in
     (or during the time of) such offering, first, all securities proposed
     by the Company to be sold for its own account, second, such
     Registrable Securities requested to be included in such registration
     pro rata on the basis of the number of shares of such securities so
     proposed to be sold and so requested to be included, and third, all
     other securities of the Company requested to be included in such
     registration pro rata on the basis of the number of shares of such
     securities so proposed to be sold and so requested to be included.

               2.3. Registration Procedures.  If and whenever the Company
                    -----------------------
     is required to use its best efforts to effect the registration of any
     Registrable Securities under the Securities Act as provided in
     Sections 2.1 and 2.2, the Company will as expeditiously as possible:

               (i)  prepare and (as soon thereafter as possible or in any
          event no later than 60 days after the end of the period within
          which requests for registration may be given to the Company) file
          with the Commission the requisite registration statement to
          effect such registration and thereafter use its best efforts to
          cause such registration statement to become effective, provided
                                                                 --------
          that the Company may discontinue any registration of its securities
          which are not Registrable























                                        6
<PAGE>

<PAGE>
     

          Securities (and, under the circumstances specified in Section
          2.2(a), its securities which are Registrable Securities) at any
          time prior to the effective date of the registration statement
          relating thereto;

               (ii)  prepare and file with the Commission such amendments
          (including post-effective amendments) and supplements to such
          registration statement and the prospectus used in connection
          therewith as may be necessary to keep such registration statement
          effective and to comply with the provisions of the Securities Act
          with respect to the disposition of all securities covered by such
          registration statement until such time as all of such securities
          have been disposed of in accordance with the intended methods of
          disposition by the seller or sellers thereof set forth in such
          registration statement (which period shall in no event exceed 120
          days from effectiveness of such registration statement);

               (iii)  furnish to each seller of Registrable Securities
          covered by such registration statement such number of conformed
          copies of such registration statement and of each such amendment
          and supplement thereto (in each case including all exhibits),
          such number of copies of the prospectus contained in such
          registration statement (including each preliminary prospectus and
          any summary prospectus) and any other prospectus filed under Rule
          424 under the Securities Act, in conformity with the requirements
          of the Securities Act, and such other documents, as such seller
          may reasonably request;

               (iv)  use its best efforts to register or qualify all
          Registrable Securities and other securities covered by such
          registration statement under such other securities or blue sky
          laws of such jurisdictions as each seller thereof shall
          reasonably request, to keep such registration or qualification in
          effect for so long as such registration statement remains in
          effect, and take any other action which may be reasonably
          necessary or advisable to enable such seller to consummate the
          disposition in such jurisdictions of the securities owned by such
          seller, except that the Company shall not for any such purpose be
          required to qualify generally to do business as a foreign
          corporation in any jurisdiction wherein it would not, but for the
          requirements of this subdivision (iv), be obligated to be so
          qualified, or to consent to general service of process in any
          such jurisdiction;

               (v)  use its best efforts to cause all Registrable
          Securities covered by such registration statement to be
          registered with or approved by such other governmental agencies
          or authorities as may be necessary to enable the


























                                        7
<PAGE>

<PAGE>
     

          seller or sellers thereof to consummate the disposition of such
          Registrable Securities;

               (vi)  furnish to each seller of Registrable Securities and
          each Requesting Holder (as defined in Section 2.6), a signed
          counterpart, addressed to such seller and such Requesting Holder
          (and underwriters, if any) of

                    (x)  an opinion of counsel for the Company, dated the
               effective date of such registration statement (and, if such
               registration includes an underwritten public offering, dated
               the date of the closing under the underwriting agreement),
               reasonably satisfactory in form and substance to such
               seller, and

                    (y)  a "comfort" letter, dated the effective date of
               such registration statement (and, if such registration
               includes an underwritten public offering, dated the date of
               the closing under the underwriting agreement), signed by the
               independent public accountants who have certified the
               Company's financial statements included in such registration
               statement,

          covering substantially the same matters with respect to such
          registration statement (and the prospectus included therein) and,
          in the case of the accountants' letter, with respect to events
          subsequent to the date of such financial statements, as are
          customarily covered in opinions of issuer's counsel and in
          accountants' letters delivered to the underwriters in
          underwritten public offerings of securities and, in the case of
          the accountants' letter, such other financial matters, and, in
          the case of the legal opinion, such other legal matters, as such
          seller or such Requesting Holder, if any, may reasonably request;

               (vii)  immediately notify each seller of Registrable
          Securities covered by such registration statement, each
          Requesting Holder, and their respective counsel (and the managing
          underwriter, if any) at any time when a prospectus relating
          thereto is required to be delivered under the Securities Act,
          upon discovery that, or upon the happening of any event as a
          result of which, the prospectus included in such registration
          statement (or deemed to be included in such registration
          statement if the registration statement, at the time it is
          declared effective, omits certain information pursuant to Rule
          430A of the Securities Act), as then in effect, includes an
          untrue statement of a material fact or omits to state any
          material fact required to be stated therein or necessary to make
          the statements therein not misleading in the light of the
          circumstances under which they were made, and at the request of
          any such seller or Requesting Holder promptly prepare and furnish
          to such























                                        8
<PAGE>

<PAGE>
     

          seller or Requesting Holder a reasonable number of copies of a
          supplement to or an amendment of such prospectus as may be
          necessary so that, as thereafter delivered to the purchasers of
          such securities, such prospectus shall not include an untrue
          statement of a material fact or omit to state a material fact
          required to be stated therein or necessary to make the statements
          therein not misleading in the light of the circumstances under
          which they were made;

               (viii)  otherwise use its best efforts to comply with all
          applicable rules and regulations of the Commission, and make
          available to its security holders, as soon as reasonably
          practicable, an earnings statement covering the period of at
          least twelve months, but not more than eighteen months, beginning
          with the first full calendar month after the effective date of
          such registration statement, which earnings statement shall
          satisfy the provisions of Section 11(a) of the Securities Act,
          and will furnish to each such seller and Requesting Holder at
          least five business days prior to the filing thereof a copy of
          any amendment or supplement to such registration statement or
          prospectus and shall not file any amendment or supplement thereof
          to which any such seller or Requesting Holder shall have
          reasonably objected on the grounds that such amendment or
          supplement does not comply in all material respects with the
          requirements of the Securities Act or of the rules or regulations
          thereunder;

               (ix)  provide and cause to be maintained a transfer agent
          and registrar for all Registrable Securities covered by such
          registration statement from and after a date not later than the
          effective date of such registration statement;

               (x)  use its best efforts to list all Registrable Securities
          covered by such registration statement on any securities exchange
          on which any of the Company's capital stock is then listed; and

               (xi)  enter into such agreements and take such other actions
          as the Requisite Holders shall reasonably request in order to
          expedite or facilitate the disposition of such Registrable
          Securities.

     The Company may require each seller of Registrable Securities as to
     which any registration is being effected to furnish the Company such
     information regarding such seller and the distribution of such
     securities as the Company may from time to time reasonably request in
     writing.

          Each holder of Registrable Securities agrees by acquisition of
     such Registrable Securities that upon receipt of any notice

























                                        9
<PAGE>

<PAGE>
     

     from the Company of the happening of any event of the kind described
     in subdivision (vii) of this Section 2.3, such holder will forthwith
     discontinue such holder's disposition of Registrable Securities
     pursuant to the registration statement relating to such Registrable
     Securities until such holder's receipt of the copies of the
     supplemented or amended prospectus contemplated by subdivision (vii)
     of this Section 2.3 and, if so directed by the Company, will deliver
     to the Company (at the Company's expense) all copies, other than
     permanent file copies, then in such holder's possession of the
     prospectus relating to such Registrable Securities current at the time
     of receipt of such notice.

          2.4  Underwritten Offerings.  (a)  Requested Underwritten
                                             ----------------------
     Offerings.  If requested by the underwriters for any underwritten
     ---------
     offering or by holders of Registrable Securities pursuant to a
     registration requested under Section 2.1, the Company will enter into
     an underwriting agreement with such underwriters for such offering,
     such agreement to be satisfactory in substance and form to each such
     holder and the underwriters and to contain such representations and
     warranties by the Company and such other terms as are generally
     prevailing in agreements of this type, including, without limitation,
     indemnities to the effect and to the extent provided in Section 2.7. 
     The holders of Registrable Securities to be distributed by such
     underwriters shall be parties to such underwriting agreement and may,
     at their option, require that (i) any or all of the representations
     and warranties by, and the other agreements on the part of, the
     Company to and for the benefit of such underwriters shall also be made
     to and for the benefit of such holders of Registrable Securities and
     (ii) any or all of the conditions precedent to the obligations of such
     underwriters under such underwriting agreement be conditions precedent
     to the obligations of such holders of Registrable Securities.  Any
     such holder of Registrable Securities shall not be required to make
     any representations or warranties to or agreements with the Company or
     the underwriters other than representations, warranties or agreements
     regarding such holder, such holder's Registrable Securities, such
     holder's intended method of distribution and any other representation
     required by law.

               (b)  Incidental Underwritten Offerings.  If the Company at
                    ---------------------------------
     any time proposes to register any of its securities under the
     Securities Act as contemplated by Section 2.2 and such securities are
     to be distributed by or through one or more underwriters, the Company
     will, if requested by any holder of Registrable Securities as provided
     in Section 2.2 and subject to the provisions of Section 2.2(b),
     arrange for such underwriters to include all the Registrable
     Securities to be offered and sold by such holder among the securities
     to be distributed by such underwriters.  The holders of Registrable
     Securities to be distributed by such underwriters shall be parties to
     the underwriting agree-






















                                       10
<PAGE>

<PAGE>
     

     ment between the Company and such underwriters and may, at their
     option, require that any or all of the representations and warranties
     by, and the other agreements on the part of, the Company to and for
     the benefit of such underwriters shall also be made to and for the
     benefit of such holders of Registrable Securities and that any or all
     of the conditions precedent to the obligations of such underwriters
     under such underwriting agreement be conditions precedent to the
     obligations of such holders of Registrable Securities.  Any such
     holder of Registrable Securities shall not be required to make any
     representations or warranties to or agreements with the Company or the
     underwriters other than representations, warranties or agreements
     regarding such holder, such holder's Registrable Securities and such
     holder's intended method of distribution and any other representation
     required by law.

               (c)  In the event of any underwritten offering under a
     registration pursuant to Section 2.1 or 2.2 (other than in the case of
     a registration under Section 2.2, if the majority of the securities
     covered thereby are to be sold for the account of holders other than
     the Company), Prudential, SFER and each assignee of all Registrable
     Securities of any class or series owned by SFER or any Prudential
     Entity agree, if so required by the managing underwriters and to the
     extent timely notified in writing by the Company or by the managing
     underwriter or underwriters, not to effect any public sale or
     distribution (including any sale pursuant to Rule 144) of Registrable
     Securities (other than as part of such offering) within the period
     commencing seven days prior to the effective date of the registration
     statement with respect to such offering and ending 90 days after the
     effective date, or such lesser period agreed to by any other
     shareholders of the Company in connection with such registration,
     after the effective date of such registration statement.

               2.5. Preparation; Reasonable Investigation.  In connection
                    -------------------------------------
     with the preparation and filing of each registration statement under
     the Securities Act pursuant to this Agreement, the Company will give
     the holders of Registrable Securities registered under such
     registration statement, their underwriters, if any, and their
     respective counsel and accountants, the opportunity to participate in
     the preparation of such registration statement, each prospectus
     included therein or filed with the Commission, and each amendment
     thereof or supplement thereto, and will give each of them such access
     to its books and records and such opportunities to discuss the
     business of the Company with its officers and the independent public
     accountants who have certified its financial statements as shall be
     necessary, in the opinion of such holders' and such underwriters'
     respective counsel, to conduct a reasonable investigation within the
     meaning of the Securities Act.


























                                       11
<PAGE>

<PAGE>
     

               2.6. Rights of Requesting Holders.  The Company will not
                    ----------------------------
     file any registration statement under the Securities Act unless it
     shall first have given to SFER and each Prudential Entity that then
     owns shares of Registrable Securities at least 30 days prior written
     notice thereof and, if so requested by any Prudential Entity or SFER,
     shall have consulted with each Prudential Entity and SFER concerning
     the selection of underwriters, counsel and independent accountants for
     the Company for such offering and registration.  If any Prudential
     Entity or SFER shall so request within 30 days after such notice, it
     shall be a "Requesting Holder" hereunder and shall have the rights of
     a Requesting Holder provided in this section 2.6 and in sections 2.3
     and 2.7.  The Company further covenants that a Requesting Holder shall
     have the right to participate in the preparation of any such
     registration or comparable statement and to require the insertion
     therein of material furnished to the Company in writing, which in such
     Requesting Holder's judgment should be included and, at the Company's
     expense, to retain counsel and/or independent public accountants (but
     limited to only one firm of independent public accountants for all
     Requesting Holders which will be determined by the affirmative vote of
     the holders of a majority of the number of Registrable Securities
     being registered) to assist such Requesting Holder in such
     participation.  In addition, if any such registration statement refers
     to any Requesting Holder by name or otherwise as the holder of any
     securities of the Company, then such Requesting Holder shall have the
     right to require (x) the insertion therein of language, in form and
     substance satisfactory to such Requesting Holder, to the effect that
     the holding by such Requesting Holder of such securities does not
     necessarily make such Requesting Holder a "controlling person" of the
     Company within the meaning of the Securities Act and is not to be
     construed as a recommendation by such Requesting Holder of the
     investment quality of the Company's debt or equity securities covered
     thereby and that such holding does not imply that such Requesting
     Holder will assist in meeting any future financial requirements of the
     Company, or (y) in the event that such reference to such Requesting
     Holder by name or otherwise is not required by the Securities Act or
     any rules and regulations promulgated thereunder, the deletion of the
     reference to such Requesting Holder.

               2.7. Indemnification.  (a)  Indemnification by the Company. 
                    ---------------        ------------------------------
     In the event of any registration of any securities of the Company
     under the Securities Act, the Company will, and hereby does, (i) in
     the case of any registration statement filed pursuant to Section 2.1
     or 2.2, indemnify and hold harmless the seller of any Registrable
     Securities covered by such registration statement, its directors,
     officers, employees and agents and each other Person who participates
     as an underwriter in the offering or sale of such securities and each
     other Person, if any, who controls such seller or any such underwriter
     within the meaning
























                                       12
<PAGE>

<PAGE>
     

     of the Securities Act, and (ii) in the case of any registration
     statement of the Company, indemnify and hold harmless any Requesting
     Holder, its directors, officers, employees and agents and each other
     Person, if any, who controls such Requesting Holder within the meaning
     of the Securities Act, in each case against any losses, claims,
     damages or liabilities, joint or several, to which such seller or
     Requesting Holder or any such directors, officers, employees, agents,
     underwriters or controlling persons may become subject under the
     Securities Act or otherwise, insofar as such losses, claims, damages
     or liabilities (or actions or proceedings, whether commenced or
     threatened, in respect thereof) arise out of or are based upon any
     untrue statement or alleged untrue statement of any material fact
     contained in any registration statement under which such securities
     were registered under the Securities Act, any preliminary prospectus,
     final prospectus or summary prospectus contained therein, or any
     amendment or supplement thereto, or any 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 the
     Company will reimburse such seller, such Requesting Holder and all
     such directors, officers, employees, agents, underwriters and
     controlling persons for any legal or any other expenses reasonably
     incurred by them in connection with investigating or defending any
     such loss, claim, liability, action or proceeding; provided that the
                                                        --------
     Company shall not be liable in any such case to the extent that any
     such loss, claim, damage, liability (or action or proceeding in
     respect thereof) or expense arises out of or is based upon an untrue
     statement or alleged untrue statement or omission or alleged omission
     made in such registration statement, any such preliminary prospectus,
     final prospectus, summary prospectus, amendment or supplement in
     reliance upon and in conformity with written information furnished to
     the Company through an instrument duly executed by such seller or
     Requesting Holder, as the case may be, specifically stating that it is
     for use in the preparation thereof and, provided further that the
                                             --------
     Company shall not be liable to any Person who participates as an
     underwriter, in the offering or sale of Registrable Securities or any
     other Person, if any, who controls such underwriter within the meaning
     of the Securities Act, in any such case to the extent that any such
     loss, claim, damage, liability (or action or proceeding in respect
     thereof) or expense arises out of such Person's failure to send or
     give a copy of the final prospectus, as the same may be then supple-
     mented or amended, to the Person asserting an untrue statement or
     alleged untrue statement or omission or alleged omission at or prior
     to the written confirmation of the sale of Registrable Securities to
     such Person if such statement or omission was corrected in such final
     prospectus.  Such indemnity shall remain in full force and effect
     regardless of any investigation made by or on behalf of such seller,
     such Requesting Holder or any such director, officer, employee, agent,

























                                       13
<PAGE>

<PAGE>
     

     underwriter or controlling person and shall survive the transfer of
     such securities by such seller.

               (b)  Indemnification by the Sellers.  The Company may
                    ------------------------------
     require, as a condition to including any Registrable Securities in any
     registration statement filed pursuant to Section 2.3, that the Company
     shall have received an undertaking satisfactory to it from the
     prospective seller of such securities, to indemnify and hold harmless
     (in the same manner and to the same extent as set forth in subdivision
     (a) of this Section 2.7) the Company, each director of the Company,
     each officer of the Company and each other Person, if any, who
     controls the Company within the meaning of the Securities Act, with
     respect to any statement or alleged statement in or omission or
     alleged omission from such registration statement, any preliminary
     prospectus, final prospectus or summary prospectus contained therein,
     or any amendment or supplement thereto, if such statement or alleged
     statement or omission or alleged omission was made in reliance upon
     and in conformity with written information furnished to the Company
     through an instrument duly executed by such seller specifically
     stating that it is for use in the preparation of such registration
     statement, preliminary prospectus, final prospectus, summary
     prospectus, amendment or supplement.  Such indemnity shall remain in
     full force and effect, regardless of any investigation made by or on
     behalf of the Company or any such director, officer or controlling
     Person and shall survive the transfer of such securities by such
     seller.  In no event shall the liability of any seller of Registrable
     Securities hereunder be greater in amount than the dollar amount of
     the proceeds received by such seller upon the sale of the Registrable
     Securities giving rise to such indemnification obligation.

               (c)  Notices of Claims, etc.  Promptly after receipt by an
                    ----------------------
     indemnified party of notice of the commencement of any action or
     proceeding involving a claim referred to in the preceding subdivisions
     of this Section 2.7, such indemnified party will, if a claim in
     respect thereof is to be made against an indemnifying party, give
     written notice to the latter of the commencement of such action,
     provided that the failure of any indemnified party to give notice as
     --------
     provided herein shall not relieve the indemnifying party of its
     obligations under the preceding subdivisions of this Section 2.7,
     except to the extent that the indemnifying party is actually
     prejudiced by such failure to give notice.  In case any such action is
     brought against an indemnified party, unless in such indemnified
     party's reasonable judgment a conflict of interest between such
     indemnified and indemnifying parties may exist in respect of such
     claim, the indemnifying party shall be entitled to participate in and
     to assume the defense thereof, jointly with any other indemnifying
     party similarly notified to the extent that it may wish, with counsel
     reasonably satisfactory to such indemnified party, and after notice
     from the indemnifying party to such indemnified party of its election
     so to assume the





















                                       14
<PAGE>

<PAGE>
     

     defense thereof, the indemnifying party shall not be liable to such
     indemnified party for any legal or other expenses subsequently
     incurred by the latter in connection with the defense thereof other
     than reasonable costs of investigation.  No indemnifying party shall,
     without the consent of the indemnified party, consent to entry  of any
     judgment or enter into any settlement which does not include as an
     unconditional term thereof the giving by the claimant or plaintiff to
     such indemnified party of a release from all liability in respect to
     such claim or litigation.

               (d)  Other Indemnification.  Indemnification similar to that
                    ---------------------
     specified in the preceding subdivisions of this Section 2.7 (with
     appropriate modifications) shall be given by the Company and each
     seller of Registrable Securities with respect to any required
     registration or other qualification of securities under any Federal or
     state law or regulation of any governmental authority other than the
     Securities Act.

               (e)  Indemnification Payments.  The indemnification required
                    ------------------------
     by this Section 2.7 shall be made by periodic payments of the amount
     thereof during the course of the investigation or defense, as and when
     bills are received or expense, loss, damage or liability is incurred.

               (f)  Contribution.  If for any reason the indemnification
                    ------------
     provided for in this Section 2.7 is unavailable to an indemnified
     party, then the indemnifying party shall contribute to the amount paid
     or payable by the indemnified party as a result of such loss, claim,
     damage or liability in such proportion as is appropriate to reflect
     not only the relative benefits received by the indemnified party and
     the indemnifying party, but also the relative fault of the indemnified
     party and the indemnifying party, as well as any other relevant
     equitable considerations; provided, however, that no holder shall be
                               --------  -------
     required to contribute in an amount greater than the dollar amount of
     the proceeds received by such holder with respect to the sale of any
     securities.  The amount paid or payable by a party as a result of the
     losses, expenses, liabilities and claims referred to above shall be
     deemed to include any legal or other fees or expenses reasonably
     incurred by such party in connection with investigating or defending
     any claim or action.  No person guilty of fraudulent misrepresentation
     (within the meaning of Section 11(f) of the Securities Act) shall be
     entitled to contribution from any person who was not guilty of such
     fraudulent misrepresentation.

               2.8.  Adjustments Affecting Registrable Securities.  The
                     --------------------------------------------
     Company will not effect or permit to occur any combination or
     subdivision of shares which would adversely affect the ability of the
     holders of Registrable Securities to include such Registrable
     Securities in any registration of its securities contemplated by





















                                       15
<PAGE>

<PAGE>
     

     this Section 2 or the marketability of such Registrable Securities
     under any such registration.

               3.   Definitions.   As used herein, unless the context
                    -----------
     otherwise requires, the following terms have the following respective
     meanings:

               Commission:  The Securities and Exchange Commission or any 
               ----------
               other Federal agency at the time administering the
               Securities Act.


               Company:  As defined in the introductory paragraph of this
               -------
               Agreement.

               Disadvantageous Condition:  As defined in Section 
               -------------------------
               2.1(a)(ii).

               Exchange Act:  The Securities Exchange Act of 1934, or any 
               ------------
               similar Federal statute, and the rules and regulations of
               the Commission thereunder, all as the same shall be in
               effect at the time.  Reference to a particular section of
               the Securities Exchange Act of 1934 shall include a
               reference to the comparable section, if any, of any such
               similar Federal statute.

               Existing Junior Preferred Stock:  The Company's Junior 
               -------------------------------
               Cumulative Convertible Preferred Stock, Series B, par value
               $.01 per share.

               Junior Preferred Stock:  As defined in Section 1.
               ----------------------
               Merger Agreement:  As defined in Section 1.
               ----------------
               New Common Stock:  As defined in Section 1.
               ----------------
               Person:  A corporation, an association, a partnership, a 
               ------
               business, an individual, a governmental or political
               subdivision thereof or a governmental agency.

               Prudential:  As defined in the introductory paragraph of 
               ----------
               this Agreement.

               Prudential Entity:  As defined in the introductory paragraph
               -----------------
               of this Agreement.

               Purchase Agreement:  As defined in Section 1.
               ------------------

               Registrable Securities:  (a) Any shares of Senior Preferred
               ----------------------
               Stock issued to SFER pursuant to the Merger Agreement or the
               Company's Restated Certificate of Incorporation, as amended,
               (b) any shares of New Common Stock issued to SFER pursuant
               to the Merger Agreement,










                                       16
<PAGE>

<PAGE>
     

               (c) any shares of New Common Stock issued to any Prudential
               Entity as a result of the Merger, (d) any shares of Junior
               Preferred Stock issued to any Prudential Entity pursuant to
               the Merger Agreement and any shares of New Common Stock
               issued to any Prudential Entity upon conversion or exercise
               of such shares of Junior Preferred Stock, (e) any Trust
               Shares distributed to any Prudential Entity pursuant to the
               termination of the H/P Trust, and (f) any other securities
               received by any Prudential entity or SFER as or in
               connection with any dividend, distribution, split or
               recapitalization of any of the foregoing.

               Registration Expenses:  All expenses incident to the 
               ---------------------
               Company's performance of or compliance with Section 2,
               including, without limitation, all registration, filing and
               National Association of Securities Dealers fees, all fees
               and expenses of complying with securities or blue sky laws,
               all word processing, duplicating and printing expenses,
               messenger and delivery expenses, the fees and disbursements
               of counsel for the Company and of its independent public
               accountants, including the expenses of any special audits or
               "cold comfort" letters required by or incident to such
               performance and compliance, but excluding the cost of any
               special audit not required to be included in such
               registration statement by applicable law, rule or
               regulation, the fees and disbursements incurred by the
               holders of Registrable Securities to be registered or by any
               Requesting Holder (in each case, including the fees and
               disbursements of any counsel and accountants retained by the
               holders of Registrable Securities to be registered or by any
               Requesting Holder), premiums and other costs of policies of
               insurance against liabilities arising out of the public
               offering of the Registrable Securities being registered and
               any fees and disbursements of underwriters customarily paid
               by issuers or sellers of securities, but excluding
               underwriting discounts and commissions and transfer taxes,
               if any.  In any case where, pursuant to Section 2.1(d), not
               all Registration Expenses are to be borne by the Company,
               the term "Registration Expenses" (as used to define the
               expenses to be allocated among all Persons requesting such
               registration) shall not include salaries of Company
               personnel or general overhead expenses of the Company,
               auditing fees, premiums or other expenses relating to
               liability insurance required by underwriters of the Company
               or other expenses for the preparation of financial state-
               ments or other data normally prepared by the Company in the
               ordinary course of its business or which the Company would
               have

























                                       17
<PAGE>

<PAGE>
     

               incurred in any event all of which expenses shall be borne
               by the Company.

               Requesting Holder:  As defined in Section 2.6.
               -----------------
               Resumption Date:  As defined in Section 2.1(a)(ii).
               ---------------
               Securities Act:  The Securities Act of 1933, or any similar
               --------------
               Federal statute, and the rules and regulations of the
               Commission thereunder, all as the same shall be in effect at
               the time.  References to a particular section of the
               Securities Act of 1933 shall include a reference to the
               comparable section, if any, of any such similar Federal
               Statute.

               Senior Preferred Stock:  As defined in Section 1.
               ----------------------
               Trust Shares:  As defined in Section 1.
               ------------
               Withdrawal Notice:  As defined in Section 2.1(a)(ii).
               -----------------

               4.   Rule 144; Rule 144A.
                    -------------------
               4.1  Rule 144.  The Company will file the reports required
                    --------
     to be filed by it under the Securities Act and the Exchange Act and
     the rules and regulations adopted by the Commission thereunder (or, if
     the Company is not required to file such reports, will, upon the
     request of any holder of Registrable Securities, make publicly
     available other information) and will take such further action as any
     holder of Registrable Securities may reasonably request, all to the
     extent required from time to time to enable such holder to sell
     Registrable Securities without registration under the Securities Act
     within the limitation of the exemptions provided by (a) Rule 144 under
     the Securities Act, as such Rule may be amended from time to time, or
     (b) any similar rule or regulation hereafter adopted by the
     Commission.  Upon the request of any holder of Registrable Securities,
     the Company will deliver to such holder a written statement as to
     whether it has complied with such requirements.

               4.2  Rule 144A.  The Company covenants that, if it is not
                    ---------
     subject to the reporting requirements of Section 13 or Section 15(d)
     of the Exchange Act, it will, upon the request of any holder of
     Registrable Securities, make available such information as may be
     required by Rule 144A(d)(4) in order to permit sales pursuant to Rule
     144A under the Securities Act.  In addition, the Company will take
     such further action as any holder of Registrable Securities may
     reasonably request, to the extent required to enable such holder to
     sell Registrable Securities without registration under the Securities
     Act within the limitation of the exemptions provided by (a) Rule 144A
     under the




















                                       18
<PAGE>

<PAGE>
     

     Securities Act, as such Rule may be amended from time to time, or
     (b) any similar rule or regulation hereafter adopted by the
     Commission.  Upon the request of any holder of Registrable Securities,
     the Company will deliver to such holder a written statement as to
     whether it has complied with such requirements.

               5.   Amendments and Waivers.  This Agreement may be amended
                    ----------------------
     and the Company may take any action herein prohibited or omit to
     perform any act herein required to be performed by it, only if the
     Company shall have obtained the written consent to such amendment,
     action or omission to act, of the holder or holders of 50% or more of
     the shares of each class of Registrable Securities affected thereby;
     provided that so long any Prudential Entity or SFER holds Registrable
     Securities affected thereby, its written consent shall be required for
     any amendment, action or omission to act.  Each holder of any
     Registrable Securities at the time or thereafter outstanding shall be
     bound by any consent authorized by this Section 5, whether or not such
     Registrable Securities shall have been marked to indicate such
     consent.

               6.   Nominees for Beneficial Owners.  In the event that any
                    ------------------------------
     Registrable Securities are held by a nominee for the beneficial owner
     thereof, the beneficial owner thereof may, at its election, be treated
     as the holder of such Registrable Securities for purposes of any
     request or other action by any holder or holders of Registrable
     Securities pursuant to this Agreement or any determination of any
     number or percentage of shares of Registrable Securities held by any
     holder or holders of Registrable Securities contemplated by this
     Agreement.  If the beneficial owner of any Registrable Securities so
     elects to be so treated, the Company may require assurances reasonably
     satisfactory to it of such owner's beneficial ownership of such
     Registrable Securities.

               7.   Notices.  All communications provided for hereunder
                    -------
     shall be sent by first-class mail and (a) if addressed to a party or
     holder of Registrable Securities other than the Company, addressed to
     such entity in the manner set forth in the Purchase Agreement (with
     respect to Prudential) or the Merger Agreement (with respect to SFER),
     or at such other address as such party shall have furnished to the
     Company and the other holders of Registrable Securities in writing, or
     (b) if addressed to the Company, at 101 Park Avenue, Suite 1400, P.O.
     Box 26770, Oklahoma City, Oklahoma 73126-6770, Attention: Chief
     Financial Officer, or at such other address, or to the attention of
     such other officer, as the Company shall have furnished to each holder
     of Registrable Securities at the time outstanding; provided, however,
                                                        --------  -------
     that any such communication to the Company may also, at the option of
     any of the parties hereunder, be either delivered to the Company at
     its address set forth above or to any officer of the Company.






















                                       19
<PAGE>

<PAGE>
     

               8.   Assignment.  This Agreement shall be binding upon and
                    ----------
     inure to the benefit of and be enforceable by the parties hereto and
     their respective successors and assigns.  Any transferee of any
     Registrable Securities hereunder that is not, under applicable law,
     permitted to publicly resell such Registrable Securities without
     restriction may become a holder of Registrable Securities hereunder
     upon such person's acquisition of such Registrable Securities by
     executing a counterpart hereof; provided, however, that no transferee
                                     --------  -------
     of any Prudential Entity or SFER, other than an affiliate of such
     transferor, shall be entitled to exercise any right hereunder which is
     designated as being a right of any Prudential Entity or SFER,
     respectively (other than generally as a holder of Registrable
     Securities), unless such transferee has acquired all Registrable
     Securities owned by such Prudential Entity or SFER, respectively.

               9.   Descriptive Headings.  The descriptive headings of the
                    --------------------
     several sections and paragraphs of this Agreement are inserted for
     reference only and shall not limit or otherwise affect the meaning
     hereof.

               10.  Specific Performance.  The parties hereto recognize and
                    --------------------
     agree that money damages may be insufficient to compensate the holders
     of any Registrable Securities for breaches by the Company of the terms
     hereof and, consequently, that the equitable remedy of specific
     performance of the terms hereof will be available in the event of any
     such breach.

               11.  GOVERNING LAW.  THIS AGREEMENT SHALL BE CONSTRUED AND
                    -------------
     ENFORCED IN ACCORDANCE WITH, AND THE RIGHTS OF THE PARTIES SHALL BE
     GOVERNED BY, THE INTERNAL LAWS OF THE STATE OF NEW YORK WITHOUT REGARD
     TO THE PRINCIPLES THEREOF REGARDING CONFLICT OF LAWS.

               12.  Counterparts.  This Agreement may be executed
                    ------------
     simultaneously in any number of counterparts, each of which shall be
     deemed an original, but all such counterparts shall together
     constitute one and the same instrument.
































                                       20
<PAGE>

<PAGE>
     

               IN WITNESS WHEREOF, the parties have caused this Agreement
     to be executed and delivered by their respective officers thereunto
     duly authorized as of the date first above written.

                              HADSON CORPORATION


                              By:___________________________
                                 Title:


                              THE PRUDENTIAL INSURANCE
                                COMPANY OF AMERICA


                              By:___________________________
                                 Title:


                              PRUCO LIFE INSURANCE COMPANY


                              By:____________________________
                                 Title:


                              PRUSUPPLY, INC.


                              By:____________________________
                                 Title:


                              SANTA FE ENERGY RESOURCES, INC.


                              By:____________________________
                                 Title:


                              SFER PIPELINE INC.


                              By:____________________________
                                 Title:





























                                       21





<PAGE>






                                                                           






                          SECURITIES PURCHASE AGREEMENT

          _________________________________________________________________
          _________________________________________________________________


                               HADSON CORPORATION

                                   $56,400,000

                              SENIOR SECURED NOTES



                          Dated as of December 14, 1993


          _________________________________________________________________
          _________________________________________________________________












































     NYFS05...:\33\68533\0020\1870\AGR92393.U2G
<PAGE>

<PAGE>




     

                                TABLE OF CONTENTS

                                                                       Page
                                                                       ----

     1.  ISSUANCE AND EXCHANGE OF SECURITIES . . . . . . . . . . . . .    3

     2.  CLOSING OF THE ISSUANCE AND EXCHANGE OF SECURITIES  . . . . .    4
         2A.   CLOSING . . . . . . . . . . . . . . . . . . . . . . . .    4

     3.  CONDITIONS  . . . . . . . . . . . . . . . . . . . . . . . . .    6
         3A.  CONDITIONS OF CLOSING  . . . . . . . . . . . . . . . . .    6
         3A(1).  CERTAIN DOCUMENTS   . . . . . . . . . . . . . . . . .    6
         3A(2).  OPINION OF PURCHASERS' SPECIAL COUNSEL  . . . . . . .   10
         3A(3).  REPRESENTATIONS AND WARRANTIES; NO DEFAULT  . . . . .   10
         3A(4).  RECEIPT PERMITTED BY APPLICABLE LAWS  . . . . . . . .   10
         3A(5).  PROCEEDINGS   . . . . . . . . . . . . . . . . . . . .   11
         3A(6).  MATERIAL ADVERSE EFFECT   . . . . . . . . . . . . . .   11
         3A(7).  FEES AND EXPENSES PAID  . . . . . . . . . . . . . . .   11

     4.  PREPAYMENTS . . . . . . . . . . . . . . . . . . . . . . . . .   11
         4A.  REQUIRED PREPAYMENTS   . . . . . . . . . . . . . . . . .   11
         4B.  OPTIONAL PREPAYMENT  . . . . . . . . . . . . . . . . . .   12
         4C.  NOTICE OF PREPAYMENT   . . . . . . . . . . . . . . . . .   13
         4D.  PARTIAL PREPAYMENTS PRO RATA   . . . . . . . . . . . . .   13
         4E.  RETIREMENT OF NOTES  . . . . . . . . . . . . . . . . . .   13

     5.  AFFIRMATIVE COVENANTS . . . . . . . . . . . . . . . . . . . .   14
         5A.  FINANCIAL STATEMENTS; REPORTS  . . . . . . . . . . . . .   14
         5B.  INFORMATION REQUIRED BY RULE 144A  . . . . . . . . . . .   17
         5C.  INSPECTION OF PROPERTY   . . . . . . . . . . . . . . . .   18
         5D.  COVENANT TO SECURE NOTES EQUALLY   . . . . . . . . . . .   18
         5E.  MAINTENANCE OF PROPERTIES; INSURANCE   . . . . . . . . .   18
         5F.  CORPORATE EXISTENCE, ETC.  . . . . . . . . . . . . . . .   19
         5G.  PAYMENT OF TAXES AND CLAIMS  . . . . . . . . . . . . . .   19
         5H.  COMPLIANCE WITH LAWS, ETC.   . . . . . . . . . . . . . .   20
         5I.  TRUST.     . . . . . . . . . . . . . . . . . . . . . . .   20

     6.  NEGATIVE COVENANTS  . . . . . . . . . . . . . . . . . . . . .   20























                                       P-1
<PAGE>

<PAGE>







                                                                       Page
                                                                       ----

         6A.  INTENTIONALLY OMITTED  . . . . . . . . . . . . . . . . .   20
         6B.  DIVIDEND LIMITATION  . . . . . . . . . . . . . . . . . .   20
         6C.  LIEN, DEBT, AND OTHER RESTRICTIONS   . . . . . . . . . .   21
         6C(1).  LIENS   . . . . . . . . . . . . . . . . . . . . . . .   22
         6C(2).  DEBT  . . . . . . . . . . . . . . . . . . . . . . . .   24
         6C(3).  LOANS, ADVANCES, INVESTMENTS AND CONTINGENT
                   LIABILITIES . . . . . . . . . . . . . . . . . . . .   26
         6C(4).  INTENTIONALLY OMITTED   . . . . . . . . . . . . . . .   28
         6C(5).  MERGER AND SALE OF ASSETS   . . . . . . . . . . . . .   28
         6C(6).  LEASE RENTALS   . . . . . . . . . . . . . . . . . . .   30
         6C(7).  SALE AND LEASE-BACK   . . . . . . . . . . . . . . . .   31
         6C(8).  SALE OR DISCOUNT OF RECEIVABLES   . . . . . . . . . .   31
         6C(9).  CERTAIN CONTRACTS   . . . . . . . . . . . . . . . . .   31
         6C(10).  PRIORITY DEBT  . . . . . . . . . . . . . . . . . . .   33
         6C(11).  TRANSACTIONS WITH AFFILIATES   . . . . . . . . . . .   33
         6C(12).  TRANSFER OF ASSETS TO SUBSIDIARIES   . . . . . . . .   34
         6C(13).  SUBSIDIARY DIVIDEND RESTRICTIONS   . . . . . . . . .   34
         6D.  ISSUANCE OF STOCK BY SUBSIDIARIES; CERTAIN CHANGES   . .   34
         6E.  COMPLIANCE WITH ERISA  . . . . . . . . . . . . . . . . .   35
         6F.  MAINTENANCE OF BUSINESS  . . . . . . . . . . . . . . . .   37
         6G.  MODIFICATION OF MATERIAL AGREEMENTS  . . . . . . . . . .   37

     7.  EVENTS OF DEFAULT . . . . . . . . . . . . . . . . . . . . . .   38
         7A.  ACCELERATION   . . . . . . . . . . . . . . . . . . . . .   38
         7B.  RESCISSION OF ACCELERATION   . . . . . . . . . . . . . .   42
         7C.  NOTICE OF ACCELERATION OR RESCISSION   . . . . . . . . .   43
         7D.  OTHER REMEDIES   . . . . . . . . . . . . . . . . . . . .   43

     8.  REPRESENTATIONS, COVENANTS AND WARRANTIES . . . . . . . . . .   43
         8A.  ORGANIZATION; AUTHORITY; ENFORCEABILITY  . . . . . . . .   43
         8B.  FINANCIAL STATEMENTS   . . . . . . . . . . . . . . . . .   44
         8C.  ACTIONS PENDING  . . . . . . . . . . . . . . . . . . . .   45
         8D.  OUTSTANDING DEBT   . . . . . . . . . . . . . . . . . . .   45
         8E.  TITLE TO PROPERTIES  . . . . . . . . . . . . . . . . . .   45
         8F.  TAXES  . . . . . . . . . . . . . . . . . . . . . . . . .   46
         8G.  CONFLICTING AGREEMENTS AND OTHER MATTERS   . . . . . . .   46
         8H.  OFFERING OF SECURITIES   . . . . . . . . . . . . . . . .   47





















                                       P-2
<PAGE>

<PAGE>







                                                                       Page
                                                                       ----

         8I.  USE OF PROCEEDS  . . . . . . . . . . . . . . . . . . . .   47
         8J.  ERISA  . . . . . . . . . . . . . . . . . . . . . . . . .   48
         8K.  GOVERNMENTAL CONSENT   . . . . . . . . . . . . . . . . .   49
         8L.  ENVIRONMENTAL COMPLIANCE   . . . . . . . . . . . . . . .   49
         8M.  DISCLOSURE   . . . . . . . . . . . . . . . . . . . . . .   50
         8N.  CAPITAL STOCK AND RELATED MATTERS  . . . . . . . . . . .   51
         8O.  PATENTS, LICENSES, ETC.  . . . . . . . . . . . . . . . .   51
         8P.  INVESTMENT COMPANY ACT   . . . . . . . . . . . . . . . .   52
         8Q.  PUBLIC UTILITY HOLDING COMPANY ACT   . . . . . . . . . .   52
         8R.  SECURITY INTERESTS   . . . . . . . . . . . . . . . . . .   52
         8S.  DELIVERY OF BMO CREDIT AGREEMENT   . . . . . . . . . . .   52

     9.  REPRESENTATIONS OF EACH PURCHASER . . . . . . . . . . . . . .   52
         9A.  NATURE OF PURCHASE   . . . . . . . . . . . . . . . . . .   52
         9B.  SOURCE OF FUNDS  . . . . . . . . . . . . . . . . . . . .   53

     10.  DEFINITIONS AND ACCOUNTING TERMS . . . . . . . . . . . . . .   53
         10A.  DEFINITIONS   . . . . . . . . . . . . . . . . . . . . .   53
         10B.  ACCOUNTING PRINCIPLES, TERMS AND DETERMINATIONS   . . .   65
         10C.  COMPUTATION OF TIME PERIODS   . . . . . . . . . . . . .   66

     11.  JUDICIAL PROCEEDINGS . . . . . . . . . . . . . . . . . . . .   66
         11A.  CONSENT TO JURISDICTION   . . . . . . . . . . . . . . .   66
         11B.  ENFORCEMENT OF JUDGMENTS  . . . . . . . . . . . . . . .   66
         11C.  SERVICE OF PROCESS  . . . . . . . . . . . . . . . . . .   67
         11D.  NO LIMITATION ON SERVICE OR SUIT  . . . . . . . . . . .   67

     12.  MISCELLANEOUS  . . . . . . . . . . . . . . . . . . . . . . .   67
         12A.  NOTE PAYMENTS   . . . . . . . . . . . . . . . . . . . .   67
         12B.  EXPENSES; INDEMNITY   . . . . . . . . . . . . . . . . .   68
         12C.  CONSENT TO AMENDMENTS   . . . . . . . . . . . . . . . .   70
         12D.  FORM, REGISTRATION, TRANSFER AND EXCHANGE OF NOTES;
               LOST NOTES  . . . . . . . . . . . . . . . . . . . . . .   71
         12E.  PERSONS DEEMED OWNERS; PARTICIPATIONS   . . . . . . . .   72
         12F.  SURVIVAL OF REPRESENTATIONS AND WARRANTIES AND
               COVENANTS; ENTIRE AGREEMENT . . . . . . . . . . . . . .   72
         12G.  SUCCESSORS AND ASSIGNS  . . . . . . . . . . . . . . . .   73





















                                       P-3
<PAGE>

<PAGE>







                                                                       Page
                                                                       ----

         12H.  DISCLOSURE TO OTHER PERSONS   . . . . . . . . . . . . .   73
         12I.  NOTICES   . . . . . . . . . . . . . . . . . . . . . . .   74
         12J.  PAYMENTS DUE ON NON-BUSINESS DAYS   . . . . . . . . . .   74
         12K.  SATISFACTION REQUIREMENT  . . . . . . . . . . . . . . .   74
         12L.  GOVERNING LAW   . . . . . . . . . . . . . . . . . . . .   75
         12M.  SEVERABILITY  . . . . . . . . . . . . . . . . . . . . .   75
         12N.  DESCRIPTIVE HEADINGS  . . . . . . . . . . . . . . . . .   75
         12O.  COUNTERPARTS  . . . . . . . . . . . . . . . . . . . . .   75
         12P.  SEVERALTY OF OBLIGATIONS  . . . . . . . . . . . . . . .   75


     PURCHASER SCHEDULE

     SCHEDULE 3A(6) -- CERTAIN EVENTS

     SCHEDULE 6C(1) -- CERTAIN LIENS

     SCHEDULE 6C(3) -- PERMITTED INVESTMENTS

     SCHEDULE 6C(9) -- CERTAIN CONTRACTS

     SCHEDULE 8C -- CERTAIN PENDING OR THREATENED LITIGATION

     SCHEDULE 8D -- OUTSTANDING DEBT

     SCHEDULE 8E -- PROPERTY DISPOSED OF SINCE DECEMBER 31, 1992

     SCHEDULE 8G -- CONFLICTING AGREEMENTS

     SCHEDULE 8J -- CERTAIN ERISA PLANS

     SCHEDULE 8T -- CERTAIN SUBSIDIARIES

     EXHIBIT A -- FORM OF SENIOR SECURED NOTE

     EXHIBIT B -- FORM OF CERTIFICATE OF MERGER






















                                       P-4
<PAGE>

<PAGE>




     

     EXHIBIT C -- FORM OF COLLATERAL AGENCY AGREEMENT

     EXHIBIT D -- FORM OF INTERCREDITOR AGREEMENT

     EXHIBIT E -- FORM OF OPINION OF COMPANY'S SPECIAL COUNSEL

     EXHIBIT E-1 -- FORM OF OPINION OF COMPANY'S DELAWARE COUNSEL

     EXHIBIT F -- FORM OF OPINION OF COMPANY'S COUNSEL

     EXHIBIT F-1 -- FORM OF OPINION OF COMPANY'S COUNSEL 

     EXHIBIT G -- FORM OF REGISTRATION RIGHTS AGREEMENT

     EXHIBIT H -- FORM OF CASH COLLATERAL AGREEMENT

     EXHIBIT I -- FORM OF VOTING AGREEMENT

     EXHIBIT K -- FORM OF BY-LAW AMENDMENTS

     EXHIBIT S -- FORM OF OPINION OF SFER'S COUNSEL

     EXHIBIT T -- FORM OF TRUST AGREEMENT







































                                       P-5
<PAGE>

<PAGE>




     




                               HADSON CORPORATION
                           101 Park Avenue, Suite 1400
                            Oklahoma City, OK  73102


                                                    As of December 14, 1993



     To Each of the Purchasers Named in the
         Purchaser Schedule Attached Hereto

     Ladies and Gentlemen:

               The undersigned, Hadson Corporation, a Delaware corporation
     (the "COMPANY"), and each of the institutions listed on the Purchaser
     Schedule (collectively, the "PURCHASERS"), hereby agree as follows:

               PRELIMINARY STATEMENT.  The Company and the Purchasers
     entered into a Restated Securities Purchase Agreement, dated as of
     December 16, 1992 (the "EXISTING PURCHASE AGREEMENT"), pursuant to
     which, among other things, the Company issued to the Purchasers
     secured promissory notes in the aggregate principal amount of
     $56,400,000.00 (the "EXISTING NOTES"), 49,500 shares of the Company's
     7% Senior Cumulative Preferred Stock, Series A, par value $.01 per
     share (the "EXISTING SENIOR PREFERRED"), 300,000 shares of the
     Company's Common Stock, par value $.01 per share (the "EXISTING
     COMMON"), 72,704,000 shares of the Company's Class B Common Stock, par
     value $.01 per share (the "EXISTING CLASS B COMMON"), and 11,341,000
     shares of the Company's Class C Common Stock, par value $.01 per share
     (the "EXISTING CLASS C COMMON").  CAPITALIZED TERMS USED HEREIN AND
     NOT OTHERWISE DEFINED HEREIN SHALL HAVE THE MEANINGS SPECIFIED IN
     PARAGRAPH 10.


























                                        1
<PAGE>

<PAGE>




     

               The Company has entered into an Agreement of Merger, dated
     as of July 28, 1993, and amended as of November 9, 1993 (as so
     amended, the "MERGER AGREEMENT"), with Santa Fe Energy Resources,
     Inc., a Delaware corporation ("SFER"), and Adobe Gas Pipeline Company,
     a Delaware corporation ("AGPC") and a wholly owned subsidiary of SFER
     Pipeline, Inc., a Delaware corporation and a wholly-owned subsidiary
     of SFER ("Pipeline"), pursuant to which AGPC will be merged with and
     into the Company, with the subsidiaries of AGPC thereby becoming
     Subsidiaries of the Company (the "MERGER").  Pursuant to the Merger
     Agreement, as of the Effective Time (as defined in the Merger
     Agreement), (i) all of the shares of common stock of AGPC will be
     converted into 2,080,000 shares of Senior Preferred Stock and such
     number of shares of New Common as is set forth in Section 2.7 of the
     Merger Agreement, (ii) each share of the Company's 8% Junior
     Cumulative Convertible Preferred Stock, Series B, par value $.01 per
     share (the "OLD JUNIOR PREFERRED"), outstanding immediately prior to
     the Merger will be converted into 1.50733 shares of New Common and
     1.09667 shares of New Junior Preferred Stock, (iii) each share of
     Existing Common outstanding immediately prior to the Merger will be
     converted into (A) .06667 (approximately 1/15th) of a share of New
     Common and (B) a number of shares of New Junior Preferred Stock equal
     to the quotient of (1) the amount, if positive, by which (a) 4,983,180
     exceeds (b) the product of 1.09667 times the number of shares of Old
     Junior Preferred outstanding immediately prior to the Merger divided
     by (2) the number of shares of Existing Common outstanding immediately
     prior to the Merger, (iv) the shares of the Existing Class B Common
     outstanding immediately prior to the Merger will be converted into the
     right to receive a beneficial interest in the Trust, 
     (v) each share of Existing Class C Common outstanding immediately
     prior to the Merger will be converted into .06667 (approximately
     1/15th) of a share of New Common and (vi) the shares of the Existing
     Senior Preferred outstanding immediately prior to the Merger will be
     converted into an aggregate of 553,658 shares of New Common, the right
     to receive a beneficial interest in the Trust and the right to receive
     $33,000,000 aggregate principal amount of the Company's senior secured
     promissory notes (the


























                                        2
<PAGE>

<PAGE>




     

     "MERGER NOTES") (such conversions described in clauses (i) through
     (vi) being referred to, collectively, as the "CONVERSIONS").  On the
     Effective Date, the Company will settle a trust with 4,983,180 shares
     of New Common naming the Purchasers as the beneficiaries thereof in
     accordance with the terms of the Trust Agreement.

               Immediately following the Merger, HEPSI will be merged with
     and into the Company, with the Subsidiaries directly owned by HEPSI,
     thereby becoming direct Subsidiaries of the Company.

               On the date hereof, the Purchasers are entering into this
     Securities Purchase Agreement (this "AGREEMENT") with the Company,
     pursuant to which, among other things, (i) the indebtedness and
     obligations of the Company under the Existing Purchase Agreement will
     be, on and as of the Effective Date, exchanged for $23,400,000
     aggregate principal amount of the Company's senior secured promissory
     notes (the "EXCHANGE NOTES" and, together with the Merger Notes, the
     "SENIOR SECURED NOTES"), (ii) the Company will issue the Merger Notes
     and (iii) certain rights and obligations of the parties with respect
     to the Senior Secured Notes and the securities issued to the
     Purchasers pursuant to the Merger Agreement are set forth.  The
     Company has requested that the Purchasers enter into this Agreement
     for such purposes.  The Purchasers are, on the terms and subject to
     the satisfaction of the conditions stated below, agreeable to granting
     the request of the Company and the Company and the Purchasers have
     agreed, subject to the satisfaction of such conditions, to terminate
     the Existing Purchase Agreement in its entirety, except to the extent
     specifically set forth herein.

          1.  ISSUANCE AND EXCHANGE OF SECURITIES.  On the Effective Date,
     the Company shall have authorized the issuance and payment of and
     shall issue and pay or deliver to each Purchaser, and each Purchaser
     shall receive, in the amounts set forth opposite such Purchaser's name
     in the Purchaser Schedule attached hereto:




























                                        3
<PAGE>

<PAGE>




     

               (i)  (A) subject to the terms and conditions hereinafter set
     forth, the Exchange Notes in the aggregate original principal amount
     of $23,400,000 in exchange for the Existing Notes and (B) the Merger
     Notes, all such Notes to be dated the Effective Date, to mature on
     December 31, 2003, to bear interest on the unpaid balance thereof from
     the date thereof until the principal thereof shall become due and
     payable at the rate equal to 8.0% per annum, and to be substantially
     in the form of Exhibit A attached hereto; and

                  (ii)  certificates evidencing the aggregate of 1,309,762
     full shares of New Common issuable upon the Conversion of the Existing
     Class C Common and the Existing Senior Preferred pursuant to the
     Merger Agreement, which New Common shall have the rights to be set
     forth in the Restated Certificate of Incorporation of the Company as
     proposed to be amended pursuant to the Certificate of Merger with
     respect to the Merger (the "CERTIFICATE OF MERGER"), which shall be
     substantially in the form of Exhibit B attached hereto (as so amended,
     the "NEW RESTATED CERTIFICATE OF INCORPORATION"); and

                 (iii)  subject to the terms and conditions hereinafter set
     forth, cash payments in an aggregate amount equal to accrued and
     unpaid interest on the Existing Notes as of the Effective Date at the
     rate set forth in the Existing Notes (the "CASH PAYMENTS").

                The term "NOTES" as used herein shall include each Senior
     Secured Note and each Note delivered in substitution or exchange for
     any such Note pursuant to this Agreement.   The term "EQUITY
     SECURITIES" shall mean the shares of New Common described in clause
     (ii) above.  The term "SECURITIES" shall mean the Notes and the Equity
     Securities.

          2.  CLOSING OF THE ISSUANCE AND EXCHANGE OF SECURITIES.

               2A.  CLOSING.  On the Effective Date, which shall occur as
     promptly as practicable following the Effective Time (the



























                                        4
<PAGE>

<PAGE>




     

     "CLOSING" or the "DATE OF CLOSING"), the Company will deliver to each
     Purchaser, at the offices of Weil, Gotshal & Manges at 767 Fifth
     Avenue, New York, New York, against surrender by such Purchaser of its
     Existing Notes and the stock certificates evidencing its Existing
     Class B Common, Existing Class C Common and Existing Senior Preferred,
     as applicable, (i) the Senior Secured Notes evidencing the aggregate
     principal amount of the Senior Secured Notes to be received by such
     Purchaser, in the denomination or denominations specified with respect
     to such Purchaser in the Purchaser Schedule, (ii) stock certificates,
     registered in such Purchaser's name, evidencing the aggregate number
     of shares of New Common to be received by such Purchaser in the
     numbers specified with respect to such Purchaser in the Purchaser
     Schedule, and (iii) by wire transfer of immediately available funds to
     the account indicated with respect to such Purchaser on the Purchaser
     Schedule, the aggregate amount of Cash Payments to be received by such
     Purchaser.  Immediately upon surrender, the Existing Notes will be
     cancelled and the Existing Purchase Agreement will be automatically
     terminated, except to the extent expressly set forth herein.  Upon
     receipt by the Purchasers of the Senior Secured Notes, the Equity
     Securities, and the Cash Payments as set forth above, The Prudential
     Insurance Company of America shall deliver, free and clear of any and
     all liens created by or consented to by any of the Purchasers or by
     The Prudential Insurance Company of America, in its capacity as agent
     for the Purchasers, (a) to the Company (x) all funds being held by it
     as collateral for the obligations under the Existing Notes pursuant to
     that certain Cash Collateral Agreement, dated as of July 15, 1993, as
     amended, between the Company and The  Prudential Insurance Company of
     America, as agent for the benefit of the purchasers under the Existing
     Purchase Agreement, by wire transfer of such funds to the Company's
     Account No. 2-927-929, ABA No. 031000037, at Mellon Bank, N.A.,
     Philadelphia, Pennsylvania and (y) all certificates and instruments
     being held by it as collateral for the Existing Notes which are not
     being delivered to the Collateral Agent as set forth in clause (b)
     below and (b) to the Collateral Agent all certificates and instruments
     being held by it as collateral for



























                                        5
<PAGE>

<PAGE>




     

     the Existing Notes which will be held by the Collateral Agent as
     Collateral.  As promptly as practicable after the Closing, the Company
     shall pay to each Purchaser, by business check, any cash payable to
     such Purchaser in lieu of any fractional shares of New Common pursuant
     to Section 2.9(a) of the Merger Agreement.

          3.  CONDITIONS.

          3A.  CONDITIONS OF CLOSING.  The effectiveness of this Agreement
     and the obligation of each Purchaser to exchange its Existing Notes as
     set forth herein is subject to the satisfaction, on or before the Date
     of Closing, of each of the following conditions:

          3A(1).  CERTAIN DOCUMENTS.  Each Purchaser shall have received
     the following, each dated the Date of Closing:

               (i)  The Senior Secured Notes, certificates evidencing the
          Equity Securities and the Cash Payments.

              (ii)  Certified copies of the resolutions of the Board of
          Directors of the Company and each of its Subsidiaries, as the
          case may be, authorizing and approving (a) this Agreement, the
          Registration Rights Agreement, the Trust Agreement, the Present
          Collateral Documents, and the issuance of the Securities and (b)
          the Merger Agreement, the HEPSI Merger and each of the other
          Related Transactions, and of all documents evidencing other
          necessary corporate action and governmental approvals, if any,
          with respect to this Agreement, the Registration Rights
          Agreement, the Trust Agreement, the Present Collateral Documents,
          the Securities, the Merger, the HEPSI Merger and each other
          Related Transaction and the transactions contemplated hereby and
          thereby, as the Purchasers may reasonably request.

               (iii)  Certified copies of the resolutions of the Board of
          Directors of each of SFER and Pipeline authorizing and approving
          the Registration Rights Agreement, the Voting


























                                        6
<PAGE>

<PAGE>




     

          Agreement, and in the case of SFER, the Merger Agreement, and the
          transactions contemplated thereby, accompanied by a certificate
          of the Secretary or an Assistant Secretary of each of SFER and
          Pipeline certifying the names and the true signatures of the
          officers of such company authorized to execute each such
          agreement.

               (iv)  A certificate of the Secretary or an Assistant
          Secretary of the Company and each of its Subsidiaries, as the
          case may be, certifying the names and true signatures of the
          officers of the Company and each of its Subsidiaries, as the case
          may be, authorized to execute this Agreement, the Registration
          Rights Agreement, the Trust Agreement, the Present Collateral
          Documents, the Notes and the other documents to be delivered
          hereunder.  

               (v)  Certified copies of the by-laws of the Company, as
          proposed to be amended by the by-law amendments in the form of
          Exhibit K attached hereto (as amended, the "BY-LAWS"), which
          shall be in full force and effect.

               (vi)  A favorable opinion of (A) Kelley Drye & Warren,
          special New York counsel to the Company, (B) Potter Anderson &
          Corron, special Delaware counsel to the Company, (C) Vinson &
          Elkins L.L.P., special counsel to the Company, and (D) Diamond,
          Stuart & Timmons, counsel to the Company, satisfactory to the
          Purchasers and substantially in the form of Exhibits E, E-1, F
          and F-1, respectively, attached hereto, and as to such other
          matters as the Purchasers may reasonably request.

               (vii)  A favorable opinion of Andrews & Kurth, L.L.P.,
          counsel to SFER and Pipeline, satisfactory to the Purchasers and
          substantially in the form of Exhibit S attached hereto, and as to
          such other matters as the Purchasers may reasonably request. 




























                                        7
<PAGE>

<PAGE>




     

               (viii)  Copies of the Present Collateral Documents, duly
          executed and delivered by the Company, and each Subsidiary a
          party thereto, each in form and substance satisfactory to the
          Purchasers, with copies of each of the following:

                    (A) executed copies of financing statements (Form UCC-
               1) to be filed under the Uniform Commercial Code of each
               jurisdiction as may be necessary or, in the opinion of the
               Purchasers, desirable to perfect the security interests
               created by such Present Collateral Documents;

                    (B)  certificates representing the shares of stock
               pledged under such Present Collateral Documents and undated
               stock powers for such certificates executed in blank;

                    (C) promissory notes representing the notes pledged
               under such Present Collateral Documents and undated bond
               powers for such notes executed in blank; and

                    (D)  such evidence that all other actions necessary or,
               in the opinion of the Purchasers, desirable to perfect and
               effect the security interests created by such Present
               Collateral Documents have been taken (other than (i) filing
               of financing statements, which shall be filed as promptly as
               practicable after the Closing and (ii) perfection of the
               Collateral Agent's interest in bank accounts and disbursing
               accounts of the Company).

               (ix)  Copies of certified copies of Requests for Information
          or Copies (Form UCC-11), or equivalent reports, listing all
          effective financing statements which name the Company or any Sub-
          sidiary (under its present name and any previous name) a party to
          the Present Collateral Documents,





























                                        8
<PAGE>

<PAGE>




     

          as debtor and which are filed in all jurisdictions in which the
          Company or such Subsidiary owns property or conducts business
          together with copies of such financing statements.

               (x)  The Registration Rights Agreement, duly executed and
          delivered by the Company, SFER and Pipeline in the form of
          Exhibit G attached hereto (the "REGISTRATION RIGHTS AGREEMENT").

               (xi)  A copy of the BMO Credit Agreement together with all
          related documents thereto (other than the Present Collateral
          Documents), certified by an officer of the Company as being a
          true and correct copy of each such document, in form and
          substance satisfactory to the Purchasers.

               (xii)  The Intercreditor Agreement, duly executed by BMO, as
          Agent under the BMO Credit Agreement.

               (xiii)  [Intentionally Omitted].

               (xiv)  Evidence that the Certificate of Merger has been duly
          executed by the Company and has been duly filed with the
          Secretary of State of the State of Delaware.

               (xv)  Evidence that a certificate of merger with respect to
          the HEPSI Merger, in form and substance satisfactory to the
          Purchasers, has been duly executed by the Company and has been
          duly filed with the Secretary of State of the State of Delaware.

               (xvi)  The Voting Agreement, duly executed by SFER and
          Pipeline.

               (xvii)  The Collateral Agency Agreement duly executed by the
          Collateral Agent and BMO, as Agent under the BMO Credit
          Agreement, in substantially the form of Exhibit C hereto (the
          "COLLATERAL AGENCY AGREEMENT").



























                                        9
<PAGE>

<PAGE>




     

               (xviii)  The Trust Agreement, duly executed by the Company
          and the Trustee, in substantially the form of Exhibit T hereto.

               (xix)  Such additional documents, information and materials
          as the Purchasers may reasonably request, including, without
          limitation, copies of any debt agreements, security agreements
          and other material contracts to which the Company or any
          Subsidiary is a party.

          3A(2).  OPINION OF PURCHASERS' SPECIAL COUNSEL.  Such Purchaser
     shall have received from Weil, Gotshal & Manges, who are acting as
     special counsel for the Purchasers in connection with this transac-
     tion, a favorable opinion satisfactory to such Purchaser as to such
     matters incident to the matters herein contemplated as it may
     reasonably request.

          3A(3).  REPRESENTATIONS AND WARRANTIES; NO DEFAULT.  The
     representations and warranties of the Company and each Subsidiary
     contained in paragraph 8 of this Agreement and in each of the Present
     Collateral Documents shall be true on and as of the Date of Closing;
     there shall exist on the Date of Closing no Event of Default or
     Default; and the Company shall have delivered to such Purchaser an
     Officer's Certificate satisfactory to such Purchaser, dated the Date
     of Closing, attesting to both such effects.

          3A(4).  RECEIPT PERMITTED BY APPLICABLE LAWS.  (i) The purchase
     of and payment for (by exchange of the Existing Notes) the Exchange
     Notes to be acquired by such Purchaser on the Date of Closing on the
     terms and conditions herein provided, (ii) the receipt by the
     Purchaser of the Merger Notes, the Equity Securities and the other
     interests to which it is entitled under the Merger Agreement and (iii)
     the establishment of the Trust on the Date of Closing on the terms and
     conditions provided in the Trust Agreement shall not violate any
     applicable law or governmental regulation (including, without
     limitation, section 5 of the Securities Act or Regulation G, T or X of
     the Board of


























                                       10
<PAGE>

<PAGE>




     

     Governors of the Federal Reserve System) and shall not subject such
     Purchaser to any tax, penalty, liability or other onerous condition
     under or pursuant to any applicable law or governmental regulation,
     and such Purchaser shall have received such certificates or other
     evidence as it may request to establish compliance with this
     condition.

          3A(5).  PROCEEDINGS.  All corporate and other proceedings taken
     or to be taken in connection with the transactions contemplated hereby
     and the Related Transactions and all documents incident thereto shall
     be satisfactory in substance and form to such Purchaser, and such
     Purchaser shall have received all such counterpart originals or
     certified or other copies of such documents as it may reasonably
     request.

          3A(6).  MATERIAL ADVERSE EFFECT.  No event shall have occurred
     since December 31, 1992 and be continuing which in the judgment of any
     Purchaser has had or could reasonably be expected to have a Material
     Adverse Effect other than as set forth on Schedule 3A(6).

          3A(7).  FEES AND EXPENSES PAID.    The Purchasers shall have
     received evidence satisfactory to them that the fees and expenses to
     be paid by the Company on the date hereof pursuant to paragraph 12B
     shall have been paid in full.

          4.  PREPAYMENTS.  The Notes shall be subject to prepayment with
     respect to the required prepayments specified in paragraph 4A and the
     optional prepayments permitted by paragraph 4B.

          4A.  REQUIRED PREPAYMENTS.  (i) Until the Notes shall be paid in
     full, the Company shall apply to the prepayment of the Notes, without
     premium, (A) $2,500,000 on the Closing Date, (B) $1,000,000, on or
     prior to August 1, 1994 and (C) such sums as shall reduce the
     outstanding principal amount of the Notes, as of December 31 in the
     year set forth below, to the amount set forth opposite such year:



























                                       11
<PAGE>

<PAGE>




     


<TABLE>
<CAPTION>

               Year                Outstanding Principal Amount
               ----                ----------------------------
               <S>                        <C>
               1994                       $52,900,000.00
               1995                        52,900,000.00
               1996                        50,400,000.00
               1997                        44,500,000.00
               1998                        36,500,000.00
               1999                        28,500,000.00
               2000                        20,500,000.00
               2001                        12,500,000.00
               2002                         4,500,000.00
               2003                                 0.00

</TABLE>

     Each such prepayment shall be in integral multiples of $500,000 and be
     accompanied by interest on the amount prepaid at the rate specified in
     the Notes to such prepayment date.  Each such payment described in the
     immediately preceding clause (C), if not earlier made, shall become
     due on December 31 in the relevant year.

          (ii) Upon receipt by the Company of the proceeds of Asset Sales
     in excess of the amounts set forth in paragraph 6C(5)(iv) which the
     Company either (x) does not intend to use for the acquisition of other
     assets within 90 days as set forth in such paragraph or (y) does not
     so use within the 90 days set forth in such paragraph, the Company
     shall apply such excess to the prepayment of the principal of the
     Notes, and to the payment of interest to such prepayment date on the
     amount prepaid at the rate specified in the Notes, without premium.

          4B.  OPTIONAL PREPAYMENT.  The Notes shall be subject to
     prepayment, in whole at any time or from time to time in part (but any
     such partial payment shall be in integral multiples of $500,000),
     without premium, at the option of the Company, at 100% of the
     principal amount so prepaid plus interest accrued thereon to the
     prepayment date.



















     

                                       12
<PAGE>

<PAGE>




     

          4C.  NOTICE OF PREPAYMENT.  The Company shall give the holder of
     each Note irrevocable written notice of any prepayment pursuant to
     paragraph 4A or 4B not less than 10 Business Days prior to the
     prepayment date, specifying such prepayment date and the principal
     amount of the Notes, and of the Notes held by such holder, to be
     prepaid on such date and stating that such prepayment is to be made
     pursuant to paragraph 4A or 4B.  Notice of prepayment having been
     given as aforesaid, the principal amount of the Notes specified in
     such notice, together with interest thereon to the prepayment date,
     shall become due and payable on such prepayment date.  The Company
     shall, on or before the day on which it gives written notice of any
     prepayment, give telephonic notice of the principal amount of the
     Notes to be prepaid and the prepayment date to each Significant Holder
     which shall have designated a recipient of such notices in the
     Purchaser Schedule attached hereto or by notice in writing to the
     Company.

          4D.  PARTIAL PREPAYMENTS PRO RATA.  Upon any partial prepayment
     of the Notes pursuant to paragraph 4A or 4B, the principal amount so
     prepaid shall be allocated to all Notes at the time outstanding
     (including, for the purpose of this paragraph 4D only, all outstanding
     Notes purchased or otherwise acquired by the Company or any of its
     Subsidiaries or Affiliates other than by prepayment pursuant to
     paragraph 4A or 4B) in proportion to the respective outstanding
     principal amounts thereof.

          4E.  RETIREMENT OF NOTES.  The Company shall not, and shall not
     permit any of its Subsidiaries or Affiliates to, prepay or otherwise
     retire in whole or in part prior to their stated final maturity (other
     than by prepayment pursuant to paragraph 4A or 4B or upon acceleration
     of such final maturity pursuant to paragraph 7A), or purchase or
     otherwise acquire, directly or indirectly, Notes held by any holder
     unless the Company or such Subsidiary or Affiliate shall have offered
     to prepay or otherwise retire or purchase or otherwise acquire, as the
     case may be, the same proportion of the aggregate principal amount of
     Notes held by
























     

                                       13
<PAGE>

<PAGE>




     

     each other holder of Notes at the time outstanding upon the same terms
     and conditions.  Any Notes so prepaid or otherwise retired or
     purchased or otherwise acquired by the Company or any of its
     Subsidiaries or Affiliates shall not be deemed to be outstanding for
     any purpose under this Agreement, except as provided in paragraph 4D.

          5.  AFFIRMATIVE COVENANTS.  From and after the Effective Date,
     (i) so long as any Note shall remain unpaid and (ii) following the
     payment of the Notes in full, with respect to paragraphs 5A, 5B and
     5C, if and so long as the Company is not subject to the reporting
     requirements of section 13 or 15(d) of the Exchange Act and any
     Purchaser holds Equity Securities, the Company covenants that:

          5A.  FINANCIAL STATEMENTS; REPORTS.  The Company will deliver to
     each Significant Holder in quadruplicate (delivery in quadruplicate to
     The Prudential Insurance Company of America will satisfy the Company's
     obligation to deliver such reports to Prudential hereunder):

               (i)  as soon as available and in any event within 30 days
          after the end of each fiscal year of the Company, consolidating
          and consolidated statements of projected income from operations
          and of projected cash flows and a consolidating and consolidated
          projected balance sheet of the Company and its Subsidiaries, in
          each case for the following fiscal year, such projected
          statements to be prepared on a quarterly basis and to be based,
          and reported by the chief executive officer, chief financial
          officer or treasurer of the Company as being based, on the
          Company's best estimates, information and assumptions at the
          time, and all such statements to be in reasonable detail and
          supported by a schedule enumerating the principal assumptions
          incorporated therein;

               (ii)  as soon as practicable and in any event within 45 days
          after the end of each month in each fiscal year of the


























     

                                       14
<PAGE>

<PAGE>




     

          Company (other than the last month in each fiscal year),
          consolidating and consolidated statements of income,
          stockholders' equity and cash flows of the Company and its
          Subsidiaries for such month and, in the case of the last month of
          a quarterly period, for such quarterly period and for the period
          from the beginning of the current fiscal year to the end of such
          quarterly period, and consolidating and consolidated balance
          sheets of the Company and its Subsidiaries as at the end of such
          month, setting forth in the case of the consolidated statements
          in comparative form corresponding consolidated figures for the
          corresponding month, and in the case of the last month of a
          quarterly period, for the corresponding period in the preceding
          fiscal year, all in reasonable detail and satisfactory in form to
          the Required Holder(s) and certified by an authorized financial
          officer of the Company, subject to changes resulting from year-
          end adjustments; provided, however, that delivery pursuant to 
                           ------------------
          clause (iv) below of copies of the Quarterly Report on Form 10-Q
          of the Company for any such quarterly period filed with the
          Securities and Exchange Commission shall be deemed to satisfy the
          requirements of this clause (ii) with respect to consolidated
          financial statements for such quarterly period;

               (iii)  as soon as practicable and in any event within 120
          days after the end of each fiscal year, consolidating and
          consolidated statements of income and cash flows and a
          consolidated statement of stockholders' equity of the Company and
          its Subsidiaries for such year, and a consolidating and
          consolidated balance sheet of the Company and its Subsidiaries as
          at the end of such year, setting forth in the case of such
          consolidated statements in comparative form corresponding
          consolidated figures from the preceding annual audit, all in
          reasonable detail and satisfactory in form to the Required
          Holder(s) and, as to the consolidated statements, reported on by
          independent public accountants of recognized national standing
          selected by the Company whose report shall be without limitation
          as

























                                       15
<PAGE>

<PAGE>




     

          to the scope of the audit and satisfactory in substance to the
          Required Holder(s) and, as to the consolidating statements,
          certified by an authorized financial officer of the Company;
          provided, however, that delivery pursuant to clause (iv) below of
          --------  -------
          copies of the Annual Report on Form 10-K of the Company for such
          fiscal year filed with the Securities and Exchange Commission
          shall be deemed to satisfy the requirements of this clause (iii)
          with respect to consolidated financial statements;

               (iv)  promptly upon transmission thereof, copies of all such
          financial statements, proxy statements, notices and reports as it
          shall send to the holders of its outstanding securities (or
          trustees or agents therefor) and copies of all registration
          statements (without exhibits) and all reports which it files with
          the Securities and Exchange Commission (or any governmental body
          or agency succeeding to the functions of the Securities and
          Exchange Commission);

               (v)  promptly upon receipt thereof, a copy of each other
          report submitted to the Company or any Subsidiary by independent
          accountants in connection with any annual, interim or special
          audit made by them of the books of the Company or any Subsidiary;

               (vi)  promptly after the filing or receiving thereof, copies
          of all reports and notices which the Company or any ERISA
          Affiliate files under ERISA with the Internal Revenue Service,
          the PBGC or the U.S. Department of Labor or which the Company or
          any ERISA Affiliate receives from the PBGC, in each case which
          relate to any Lien or liability not permitted by this Agreement;

               (vii)  upon delivery thereof to BMO, a copy of all financial
          statements and reports delivered to BMO by the Company pursuant
          to the BMO Credit Agreement, unless the same has been delivered
          under this Agreement; and



























                                       16
<PAGE>

<PAGE>




     

               (viii)  with reasonable promptness, such other information
          respecting the condition or operations, financial or otherwise,
          of the Company or any of its Subsidiaries as such Significant
          Holder may reasonably request.

     Together with each delivery of financial statements required by
     clauses (ii) and (iii) above, the Company will deliver to each
     Significant Holder an Officer's Certificate demonstrating (with
     computations in reasonable detail) compliance by the Company and its
     Subsidiaries with the provisions of paragraphs 6B and 6C(1) through
     6C(13) inclusive and stating that there exists no Event of Default or
     Default, or, if any Event of Default or Default exists, specifying the
     nature and period of existence thereof and what action the Company
     proposes to take with respect thereto.  Together with each delivery of
     financial statements required by clause (iii) above, the Company will
     deliver to each Significant Holder a certificate of such accountants
     stating that, in making the audit necessary for their report on such
     financial statements, they have obtained no knowledge of any Event of
     Default or Default, or, if they have obtained knowledge of any Event
     of Default or Default, specifying the nature and period of existence
     thereof.  Such accountants, however, shall not be liable to anyone by
     reason of their failure to obtain knowledge of any Event of Default or
     Default which would not be disclosed in the course of an audit
     conducted in accordance with generally accepted auditing standards.

               The Company also covenants that immediately after any
     Responsible Officer obtains knowledge of an Event of Default or
     Default, it will deliver to each Significant Holder an Officer's
     Certificate specifying the nature and period of existence thereof and
     what action the Company proposes to take with respect thereto.

          5B.  INFORMATION REQUIRED BY RULE 144A.  The Company will, upon
     the request of the holder of any Securities that is a qualified
     institutional buyer, provide such holder, and any




























                                       17
<PAGE>

<PAGE>




     

     qualified institutional buyer designated by such holder, such
     financial and other information as such holder may reasonably
     determine to be necessary in order to permit compliance with the
     information requirements of Rule 144A under the Securities Act in
     connection with the resale of Securities, except at such times as the
     Company is subject to the reporting requirements of section 13 or
     15(d) of the Exchange Act.  For the purpose of this paragraph 5B, the
     term "qualified institutional buyer" shall have the meaning specified
     in Rule 144A under the Securities Act.

          5C.  INSPECTION OF PROPERTY.  The Company will permit any Person
     designated by any Significant Holder in writing, at such Significant
     Holder's expense, to visit and inspect any of the properties of the
     Company and its Subsidiaries, to examine the corporate books and
     financial records of the Company and its Subsidiaries and make copies
     thereof or extracts therefrom and to discuss the affairs, finances and
     accounts of any of such corporations with the principal officers of
     the Company and its independent public accountants, all at such
     reasonable times and as often as such Significant Holder may
     reasonably request.

          5D.  COVENANT TO SECURE NOTES EQUALLY.  The Company will, if it
     or any Subsidiary shall create or assume any Lien upon any of its
     property or assets, whether now owned or hereafter acquired, other
     than Liens permitted by the provisions of paragraph 6C(1) (unless
     prior written consent to the creation or assumption thereof shall have
     been obtained pursuant to paragraph 12(C)), make or cause to be made
     effective provision whereby the Notes will be secured by such Lien
     equally and ratably with any and all other Debt thereby secured so
     long as any such other Debt shall be so secured.

          5E.  MAINTENANCE OF PROPERTIES; INSURANCE.  The Company will
     maintain or cause to be maintained in good repair, working order and
     condition all properties used or useful in the business of the Company
     and its Subsidiaries and from time to time will make or cause to be
     made all appropriate repairs, renewals and replacements thereof, all
     to the extent material to the Company

























                                       18
<PAGE>

<PAGE>




     

     and its Subsidiaries taken as a whole.  The Company will maintain or
     cause to be maintained, with financially sound and reputable insurers,
     insurance (including self-insurance, co-insurance, retainage and other
     similar arrangements) with respect to its properties and business and
     the properties and businesses of its Subsidiaries against loss or
     damage of the kinds customarily insured against by corporations of
     established reputation engaged in the same or similar businesses and
     similarly situated, of such type and in such amounts as are
     customarily carried under similar circumstances by such other
     corporations.

          5F.  CORPORATE EXISTENCE, ETC.  Subject to the provisions of
     paragraph 6C(5), the Company will at all times preserve and keep in
     full force and effect its corporate existence, and rights and
     franchises material to its business, and those of each of its
     Subsidiaries and will qualify, and cause each of its Subsidiaries to
     qualify, to do business in any jurisdiction where the failure to do so
     would have a material adverse effect on the financial condition or
     operations of the Company and its Subsidiaries taken as a whole,
     provided that the corporate existence of any such Subsidiary,
     --------
     including, without limitation, any Subsidiary which was a subsidiary
     of AGPC prior to the Merger, may be terminated if, in the good faith
     judgment of the Board of Directors of the Company, such termination is
     in the best interests of the Company and could not reasonably be
     expected to have a Material Adverse Effect on the holders of the Notes
     or the Equity Securities.

          5G.  PAYMENT OF TAXES AND CLAIMS.  The Company will, and will
     cause each of its Subsidiaries to, all to the extent material to the
     Company and its Subsidiaries taken as a whole, pay all taxes,
     assessments and other governmental charges imposed upon it or any of
     its properties or assets or in respect of any of its franchises,
     business, income or property before any penalty or significant
     interest accrues thereon, and all claims (including, without
     limitation, claims for labor, services, materials and supplies) for
     sums which have become due and payable and which by law have or may
     become a Lien upon any of its properties or assets, provided that no
                                                         --------
     such charge or claim






















                                       19
<PAGE>

<PAGE>




     

     need be paid if being contested in good faith by appropriate
     proceedings and if such accrual or other appropriate provision, if
     any, as shall be required by generally accepted accounting principles
     shall have been made therefor.

          5H.  COMPLIANCE WITH LAWS, ETC.  The Company will comply and
     cause its Subsidiaries to comply with the requirements of all
     applicable laws, rules, regulations and orders of any governmental
     authority, the noncompliance with which would materially and adversely
     affect the financial condition or operations of the Company and its
     Subsidiaries taken as a whole.

          5I.  TRUST.  The Company will comply with the terms of the Trust
     Agreement.

          6.  NEGATIVE COVENANTS.  From and after the Effective Date, so
     long as any Note shall remain unpaid, the Company covenants that:

          6A.  INTENTIONALLY OMITTED.

          6B.  DIVIDEND LIMITATION.  The Company will not pay or declare
     any dividend on any class of its stock or make any other distribution
     on account of any class of its stock, or redeem, purchase or otherwise
     acquire, directly or indirectly, any shares of its stock (other than
     pursuant to the Merger Agreement, the Equity Incentive Plan or the
     Special Options) or make any payments of principal of, or retire,
     redeem, purchase or otherwise acquire, any Subordinated Debt (all of
     the foregoing being herein called "RESTRICTED PAYMENTS"), other than
     (i) dividends on Senior Preferred Stock payable in shares of such
     stock, (ii) payments of Intercompany Notes, (iii) issuances of shares
     of New Common issuable upon the exercise or conversion of shares of
     New Junior Preferred Stock in accordance with the New Restated Cer-
     tificate of Incorporation, (iv) pursuant to the Trust Agreement, (v)
     the surrender to and receipt by the Company of shares of New Junior
     Preferred Stock upon the exercise or conversion thereof pursuant to
     the New Restated Certificate of


























                                       20
<PAGE>

<PAGE>




     

     Incorporation, (vi) payments of cash in lieu of issuing (A) fractional
     shares of New Common in connection with the exercise or conversion of
     shares of New Junior Preferred Stock or (B) fractional shares of
     Senior Preferred Stock in connection with the payment of dividends on
     such stock payable in shares of such stock, provided, that the cash
                                                 --------
     payments described in clauses (A) and (B) above (other than those made
     from the proceeds of any aggregation and sale of fractional shares)
     shall not aggregate more than $100,000 during any fiscal year of the
     Company and (vii) other Restricted Payments (other than in respect of
     New Common) during the calendar years set forth below, but only if, on
     the date such other Restricted Payments are declared (in the case of a
     dividend) or paid (in the case of other Restricted Payments), (x) no
     Default or Event of Default shall exist or shall result from such
     Restricted Payment and (y) the outstanding principal balance of the
     Notes has been reduced to the amount set forth opposite the calendar
     year described below in which such date occurs:


<TABLE>
<CAPTION>

                                        Outstanding Principal
              Calendar Year                Balance of Notes  
              -------------             ---------------------
             <S>                            <C>
                  1996                       $30,300,000.00
                  1997                        24,800,000.00
                  1998                        19,300,000.00
                  1999                        13,800,000.00
                  2000                         8,300,000.00
                  2001                         2,800,000.00
              2002-2003                                0.00

</TABLE>

     The term "STOCK" as used in this paragraph 6B shall include warrants
     and options to purchase stock.

          6C.  LIEN, DEBT, AND OTHER RESTRICTIONS.  The Company will not
     and will not permit any Subsidiary to:





















                                       21
<PAGE>

<PAGE>




     

          6C(1).  LIENS.  Create, assume or suffer to exist any Lien upon
     any of its properties or assets, whether now owned or hereafter
     acquired, except
               ------
               (i)  Liens for taxes, assessments, governmental levies or
          charges not yet due or which are being contested in good faith by
          appropriate proceedings and for which adequate reserves with
          respect thereto are maintained on the books of the Company or
          such Subsidiary in accordance with generally accepted accounting
          principles,

               (ii)  other statutory Liens (including landlord liens)
          incidental to the conduct of its business or the ownership of its
          property and assets which were not or are not incurred in
          connection with the borrowing of money or the obtaining of
          advances or credit or guaranteeing the obligations of a Person,
          and which do not in the aggregate materially detract from the
          value of its property or assets or materially impair the use
          thereof in the operation of its business,

               (iii)  Liens on property or assets of a Subsidiary to secure
          Debt permitted under paragraph 6C(2)(iii),

               (iv)  Liens on assets purchased from a seller other than the
          Company or a Subsidiary, which Liens are created at the time of
          acquisition of such property by the Company or any Subsidiary or
          within 10 days thereafter, to secure not more than 90% (or to
          secure Debt incurred by the Company or any Subsidiary to pay not
          more than 90%) of the purchase price thereof, but only to the
          extent the incurrence of such Debt is permitted by paragraph
          6C(2)(vi),

               (v)  any Lien renewing, extending or refunding any Lien
          permitted by clause (iv) above, provided that the principal 
                                          --------
          amount secured is not increased, and the Lien is not extended to
          other property of the Company or any Subsidiary,

























                                       22
<PAGE>

<PAGE>




     

               (vi)  Liens presently existing or hereinafter created in
          favor of the Purchasers or their Transferees or in favor of the
          Collateral Agent for the benefit of the banks now or hereafter
          parties to the BMO Credit Agreement and the Purchasers or their
          Transferees, including, without limitation, any Lien created by
          any of the Collateral Documents,

               (vii)  Liens on real or personal property, arising out of
          Liens or claims of owners of oil and gas interests created by
          statute securing the purchase price payable for oil and gas
          purchased by the Company or any Subsidiary in the ordinary course
          of business; provided that all such Liens shall be discharged in
                       --------
          a timely fashion or contested in good faith by appropriate
          proceedings; provided, further, that any order or notice entered
                       --------  -------
          or given in said proceedings for execution of the enforcement of
          said Lien shall be stayed within 30 days from the date of entry
          of such order or the giving of such notice,

               (viii)  other Liens incidental to the conduct of its
          business or the ownership of its property and assets which were
          not or are not incurred in connection with the borrowing of money
          or the obtaining of advances or credit (including those arising
          under contracts with the government of the United States or any
          State thereof or any local subdivision or contracting agency of
          any thereof, or pledges or deposits securing performance
          obligations under the natural gas sales contracts, which together
          do not exceed $2,000,000 in the aggregate, and pledges or
          deposits for the purpose of securing a stay or discharge of legal
          proceedings not exceeding $25,000), and which do not in the
          aggregate materially detract from the value of its property or
          assets, or materially impair the use thereof in the operation of
          its business,

               (ix)  Liens granted by the Subsidiary Borrowers on all
          inventory, accounts receivables, cash, deposits,

























                                       23
<PAGE>

<PAGE>




     

          instruments, investment securities and other personal property of
          the Subsidiary Borrowers, in each instance whether now owned or
          existing or hereafter issued, acquired or arising and all
          proceeds thereof (collectively, the "BMO COLLATERAL") to secure
          the obligations of the Company and the Subsidiary Borrowers
          pursuant to the BMO Credit Agreement; provided that the 
                                                --------
          outstanding amount of letters of credit secured by the BMO
          Collateral shall not at any time exceed $60,000,000 and the
          amount of advances secured by the BMO Collateral shall not at any
          time exceed $10,000,000,

               (x)  Liens on property acquired by the Company or any
          Subsidiary which Liens were in place at the time such property
          was acquired, provided that such Liens were not granted in 
                        --------
          contemplation of the property being so acquired,

               (xi)  Liens created by the Indemnity and Holdback Agreement,
          dated December 15, 1991, by and among the Company, HD Energy
          Corporation ("HD Energy"), LG&E Energy Corp. and LG&E Energy
          Systems Inc., as modified by the Settlement Agreement made the
          23rd day of September 1992, and

               (xii)  Liens existing on the date hereof set forth on
          Schedule 6C(1).

          6C(2).  DEBT.  Create, incur, assume or suffer to exist any Debt,
          except
          ------
               (i)  Debt of the Company represented by the Senior Secured
          Notes,

               (ii)  Debt of the Company and the Subsidiary Borrowers under
          the BMO Credit Agreement, guarantees of the obligations of the
          Subsidiary Borrowers under the BMO Credit Agreement, and any
          amendments, modifications, renewals and extensions thereof
          permitted pursuant to paragraph 6G,
























                                       24
<PAGE>

<PAGE>




     

               (iii)  Debt of the Company to a Wholly Owned Subsidiary, of
          a Wholly Owned Subsidiary to the Company, of a Subsidiary
          Borrower to another Subsidiary Borrower, of a Pledged Subsidiary
          to another Pledged Subsidiary and of an Other Subsidiary to an
          Other Subsidiary,

               (iv)  Debt of the Company and the Subsidiaries pursuant to
          the Collateral Documents,

               (v)  Guaranties permitted by paragraph 6C(3)(vi) and
          guaranties and other arrangements permitted by paragraph
          6C(9)(v)(y) and (z),

               (vi)  Debt incurred to pay the purchase price of property
          acquired by the Company or any Subsidiary in an aggregate amount
          outstanding not at any time in excess of the sum of (x) 20% of
          the Total Capital of the Company on the Effective Date, after
          giving effect to the transactions contemplated hereby and to the
          Related Transactions, as such Total Capital is determined
          pursuant to a balance sheet of the Company as of the Effective
          Date delivered to the Purchasers not later than 60 days following
          the Effective Date and (y) 50% of the amount of all prepayments
          of the principal balance of the Notes made on or after the
          Effective Date other than such prepayments made with the proceeds
          of Asset Sales pursuant to paragraph 4A(ii), and any refundings
          or refinancings of any such Debt, provided, however, that (A) all
                                            --------  -------
          such Debt shall be without recourse to the Company or any
          Subsidiary or any of their respective assets (other than the
          property being acquired), (B) the amount of any such Debt shall
          not exceed the lesser of 90% of (i) the cost of the property so
          acquired and (ii) the fair value of such property and (C) the
          amount of such Debt that may be outstanding pursuant to clause
          (y) above shall be reduced by the amount of Debt outstanding
          pursuant to subparagraph (vii) below,



























                                       25
<PAGE>

<PAGE>




     

               (vii)  Debt incurred by the Company in an aggregate amount
          outstanding not at any time in excess of 50% of the aggregate
          amount of principal prepayments of the Notes pursuant to
          paragraph 4B, provided, that (A) all such Debt shall be borrowed
                        --------
          from BMO and shall be either nonsecured or secured only by Liens
          permitted under paragraph 6C(1)(vi), and (B) the amount of Debt
          that may be outstanding pursuant to this subparagraph (vii) shall
          be reduced to the extent Debt is outstanding pursuant to clause
          (y) of subparagraph (vi) above as a result of principal payments
          pursuant to paragraph 4B, and

               (viii)  Debt incurred by the Company in an aggregate amount
          outstanding not at any time in excess of the amount by which the
          principal balance of the Notes is prepaid with the proceeds of
          Asset Sales.

          6C(3).  LOANS, ADVANCES, INVESTMENTS AND CONTINGENT LIABILITIES. 
     Make or permit to remain outstanding any loan or advance to, or extend
     credit (other than credit extended in the normal course of business to
     any Person who is not an Affiliate of the Company) to, or guarantee,
     endorse or otherwise be or become contingently liable, directly or
     indirectly, in connection with the obligations, stock or dividends of,
     or own, purchase or acquire (other than pursuant to the Merger
     Agreement) any stock, obligations or securities of, or any other
     interest in, or make any capital contribution to, any Person, except
                                                                   ------
     that the Company or any Subsidiary may

               (i)  own the stock of Subsidiaries (including, without
          limitation, Subsidiaries which were subsidiaries of AGPC
          immediately prior to the Merger, Beck & Root Fuel Company and
          Midwest Energy Companies, Inc., in each case in the amounts set
          forth on Schedule 6C(3),

               (ii)  acquire and own stock, obligations or securities
          received in settlement of debts (created in the ordinary course
          of business) owing to the Company or any Subsidiary,
























                                       26
<PAGE>

<PAGE>




     

               (iii)  own, purchase or acquire (a) certificates of deposit
          of commercial banks organized under the laws of the United States
          (having capital resources in excess of $250,000,000) and
          commercial paper rated A-1 by Standard and Poor's Corporation or
          P-1 by Moody's Investors Services, Inc., and (b) obligations of
          the United States Government or any agency thereof, and
          obligations guaranteed by the United States Government, in each
          case due within one year from the date of purchase and payable in
          the United States in United States dollars,

               (iv)  endorse negotiable instruments for collection or
          deposit in the ordinary course of business,

               (v)  make or permit to remain outstanding travel and other
          like advances to officers and employees in the ordinary course of
          business, in an aggregate amount not to exceed $50,000 at any
          time outstanding,

               (vi)  make and maintain the Guarantees described in
          paragraph 6C(2)(ii) and the Guarantees described in Schedule
          6C(3),

               (vii) hedge its risk positions relating to the operations of
          its natural gas marketing business,

               (viii)  make or suffer to exist loans to, or investments in,
          Beck & Root Fuel Company in an aggregate amount outstanding not
          to exceed at any time $2,000,000,

               (ix)  make or permit ordinary course of business investments
          by the Company or any Subsidiary in partnerships or joint
          ventures holding title to pipe lines and gathering systems or gas
          processing plants and loans and advances by the Company or any
          Subsidiary to such partnerships or joint ventures provided that
          such partnerships or joint ventures shall at no time incur Debt
          for borrowed money or for the deferred purchase price of property
          for which the Company or

























                                       27
<PAGE>

<PAGE>




     

          any Subsidiary could under any circumstances be liable except for
          Debt held by the partners or joint ventures in proportion to
          their equity interests in the partnership or joint venture in
          question, 

               (x)  permit to make and remain outstanding the Debt
          permitted by paragraph 6C(2)(iii),

               (xi)  make or permit the arrangements permitted by paragraph
          6C(9)(v)(y) and (z), and

               (xii)  in addition to advances relating to Debt permitted by
          paragraph 6C(2)(iii), make or permit advances by the Company to
          Wholly-Owned Subsidiaries arising from the Company providing
          administrative services to such Wholly-Owned Subsidiaries or
          temporarily paying expenses arising in the ordinary course of
          business of any Wholly-Owned Subsidiary which are not made to
          maintain the net worth of such Wholly-Owned Subsidiary so long as
          each such Wholly-Owned Subsidiary is invoiced monthly by the
          Company and makes payments in full of the invoiced amount within
          30 days after the date of such invoice.

          6C(4).  INTENTIONALLY OMITTED.

          6C(5).  MERGER AND SALE OF ASSETS.  Other than the Merger, the
     HEPSI Merger, the contract described in clause (x)(A) of the proviso
     to paragraph 6C(11) and transfers permitted under paragraphs 6C(2),
     6C(3) and 6C(7), merge or consolidate with or into any other Person or
     convey, lease, transfer or otherwise dispose of any of its assets to
     any Person, except that
                 ------
               (i)  any Wholly-Owned Subsidiary may merge with the Company
          (provided that the Company shall be the continuing or surviving
          corporation), any Subsidiary Borrower may merge with any other
          Subsidiary Borrower, any Pledged Subsidiary may merge with any
          other Pledged Subsidiary and any Other Subsidiary may merge with
          any Other Subsidiary,

























                                       28
<PAGE>

<PAGE>




     

               (ii)  any Wholly-Owned Subsidiary may sell, lease, transfer
          or otherwise dispose of any of its assets to the Company, any
          Subsidiary Borrower may sell, lease, transfer or otherwise
          dispose of any of its assets to another Subsidiary Borrower, any
          Pledged Subsidiary may sell, lease, transfer or otherwise dispose
          of any or all of its assets to another Pledged Subsidiary and any
          Other Subsidiary may sell, lease, transfer or otherwise dispose
          of any or all of its assets to any Other Subsidiary,

               (iii)  the Company or any Subsidiary may sell inventory in
          the ordinary course of business consistent with past practices,

               (iv)  the Company or any Subsidiary may engage in Asset
          Sales in which it receives cash consideration in an amount equal
          to the fair value (as determined in good faith by the Board of
          Directors of the Company) at the time of such Asset Sale of the
          assets sold to the extent the cash consideration net of taxes and
          other reasonable expenses incurred in connection therewith does
          not exceed (x) $5,000,000 in the aggregate during the first 12
          full calendar months following the Effective Date or (y)
          $10,000,000 in the aggregate from and after the Effective Date;
          provided, however, that the Company or any Subsidiary may engage
          --------  -------
          in Asset Sales for cash consideration in excess of the amounts
          set forth in clauses (x) and (y) above if the amount of such
          excess is, upon receipt thereof, deposited with a designee of the
          Purchasers pursuant to a cash collateral agreement in the form of
          Exhibit H, and subsequently used by the Company or such
          Subsidiary within 90 days following receipt thereof (x) to prepay
          the Notes as set forth in paragraph 4A(ii) or (y) to acquire
          assets useful to the Company or such Subsidiary consistently with
          paragraph 6F; provided, further, that, unless the Company shall 
                        --------  -------
          forward to the Purchasers a certified resolution of its Board of
          Directors that the Company intends to reinvest such proceeds as
          set forth in clause (y) above, the Company shall apply such
          proceeds to

























                                       29
<PAGE>

<PAGE>




     

          prepayment of the Notes immediately upon receipt thereof;
          provided, further that the Company or any Subsidiary acquiring 
          --------  -------
          assets with the proceeds of any Asset Sales permitted under the
          first proviso to this paragraph 6C(5)(iv) shall pledge to the 
                -------
          Purchasers the stock of any Subsidiary formed to hold such
          assets, and

               (v)  the Company may merge or consolidate or sell, lease or
          otherwise transfer substantially all of its assets if (a) the
          Liens under the Collateral Documents are unaffected thereby or
          are replaced to the satisfaction of the Purchasers with
          essentially equivalent Liens; (b) either the Company is the
          surviving or resulting Person of such merger or consolidation or
          the surviving or resulting Person or the transferee (if other
          than the Company) is a corporation having substantially all of
          its assets in the United States or Canada and conducting
          substantially all of its business in the United States or Canada;
          (c) the surviving or resulting Person or the transferee (if not
          the Company) assumes by supplemental agreement delivered to the
          Purchasers, in form and substance satisfactory to the Purchasers,
          all of the obligations of the Company under this Agreement, the
          Trust Agreement, the Registration Rights Agreement and each
          Collateral Document; (d) the Purchasers receive opinions of
          counsel to the Company (or such other Person) satisfactory in
          form and substance to the Purchasers; (e) after giving effect to
          such merger, consolidation or transfer, the surviving or
          resulting Person or the transferee is able to incur at least $1
          of additional Debt without giving rise to an Event of Default or
          Default; and (f) immediately after giving effect to such merger,
          consolidation or transfer, no Event of Default or Default would
          be continuing.

          6C(6).  LEASE RENTALS.  Enter into or permit to remain in effect,
     any agreement to rent or lease (as lessee) any real or personal
     property; provided, however, that the Company or any Subsidiary may
               --------  -------
     enter into or permit to remain in effect any such























                                       30
<PAGE>

<PAGE>




     

     lease (other than a lease that would be required to be capitalized on
     the books of the Company or such Subsidiary) if the aggregate minimum
     annual payments under all such leases for any fiscal year do not
     exceed 10% of the Net Worth of the Company as of the last day of the
     previous fiscal year.

          6C(7).  SALE AND LEASE-BACK.  Enter into any arrangement with any
     lender or investor or to which such lender or investor is a party
     providing for the leasing by the Company or any Subsidiary of real or
     personal property which has been or is to be sold or transferred by
     the Company or any Subsidiary to such lender or investor or to any
     Person to whom funds have been or are to be advanced by such lender or
     investor on the security of such property or rental obligations of the
     Company or any Subsidiary; provided, however, that the Company or any
                                --------  -------
     Subsidiary may enter into any such arrangement if the aggregate annual
     rental obligations under all such arrangements entered into after the
     Effective Date for any fiscal year do not exceed 10% of the Net Worth
     of the Company as of the last day of the previous fiscal year.

          6C(8).  SALE OR DISCOUNT OF RECEIVABLES.  Sell with recourse, or
     discount (other than to the extent of finance and interest charges
     included therein) or otherwise sell for less than face value thereof,
     any of its notes or accounts receivable except notes or accounts
     receivable the collection of which is doubtful in accordance with
     generally accepted accounting principles.

          6C(9).  CERTAIN CONTRACTS.  Except as set forth on Schedule
     6C(9), enter into or be party to:

               (i)  any contract providing for the making of loans,
          advances or capital contributions to any Person or for the
          purchase of any property from any Person, in each case in order
          to enable such Person to maintain working capital, net worth or
          any other balance sheet condition or to pay debts,



























                                       31
<PAGE>

<PAGE>




     

          dividends or expenses, except as permitted by the provisions of
          paragraph 6C(3), or

               (ii)  any contract for the purchase of materials, supplies
          or other property or services if such contract (or any related
          document) requires that payment by the Company or any Subsidiary
          for such materials, supplies or other property or services shall
          be made regardless of whether or not delivery of such materials,
          supplies or other property or services is ever made or tendered
          (other than contracts for firm transportation of natural gas
          entered into in the ordinary course of business pursuant to which
          aggregate annual charges payable by the Company and its
          Subsidiaries do not exceed $4,000,000), or

               (iii)  any contract to rent or lease (as lessee) any real or
          personal property if such contract (or any related document)
          provides that the obligation to make payments thereunder is
          absolute and unconditional under conditions not customarily found
          in commercial leases then in general use or requires that the
          lessee purchase or otherwise acquire securities or obligations of
          the lessor, or

               (iv)  any contract for the sale or use of materials,
          supplies or other property, or the rendering of services, if such
          contract (or any related document) requires that payment to the
          Company or any Subsidiary for such materials supplies or other
          property, or the use thereof, or payment for such services, shall
          be subordinated to any indebtedness (of the purchaser or user of
          such materials, supplies or other property or the Person entitled
          to the benefit of such services) owed or to be owed to any
          Person, or

               (v)  any other contract which, in economic effect, is
          substantially equivalent to a guarantee, except as permitted
          pursuant to the provisions of paragraphs 6C(1), 6C(2) or 6C(3)
          and except in any such case (x) by the endorsement of negotiable
          instruments for deposit or collection or similar

























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          transactions in the ordinary course of business, (y) guarantees
          by the Company or any Subsidiary of the contractual obligations
          of any Subsidiary (not involving borrowings), and letters of
          credit issued pursuant to the BMO Credit Agreement and (z) surety
          bonds, performance bonds, other letters of credit or guarantees
          posted as security for performance of commercial arrangements
          (not involving any borrowings) or similar contracts entered into
          in the ordinary course of business, not to exceed $4,000,000 in
          the aggregate at any time.

          6C(10).  PRIORITY DEBT.  Create, assume or incur, or in any
     manner become or be liable in respect of, indebtedness for money
     borrowed, advances made or goods purchased (other than Liens permitted
     under paragraph 6C(1)(vii) and Debt permitted under paragraph
     6C(2)(ii)), if the lender of such money or the Person making such
     advances or the vendor of such goods (or any Person who guarantees or
     otherwise becomes surety for the whole or any part of such
     indebtedness or acquires any right or incurs any obligation to become,
     either immediately or upon the occurrence of some future contingency,
     the owner of the whole or any part thereof) shall have any right, by
     reason of statute (including, without limitation, 31 U.S.C.A. section
      3713), or otherwise, to have any claim in respect of such
     indebtedness first satisfied out of the general assets of the Company
     or such Subsidiary in priority to the claims of its general creditors.

          6C(11).  TRANSACTIONS WITH AFFILIATES.  Directly or indirectly,
     purchase, acquire or lease any property from, or sell, transfer or
     lease any property to, or otherwise deal with, in the ordinary course
     of business or otherwise (i) except as contemplated by the Merger
     Agreement, the New Restated Certificate of Incorporation and the
     Registration Rights Agreement, any Affiliate (except as specifically
     permitted hereunder), (ii) any Person owning, beneficially or of
     record, directly or indirectly, either individually or together with
     all other Persons to whom such Person is related by blood, adoption or
     marriage, stock of the Company aggregating 3% or more of any



























                                       33
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     class of equity securities issued by the Company or any Subsidiary,
     other than a Purchaser, except as contemplated by the Merger
     Agreement, the New Restated Certificate of Incorporation and the
     Registration Rights Agreement, or (iii) any Person related by blood,
     adoption or marriage to any Person described or coming within the
     provisions of clause (i) or (ii) of this paragraph 6C(11) other than,
     in the case of clauses (i), (ii) and (iii) above, on terms that are no
     less favorable to the Company or such Subsidiary than would be
     obtained in a transaction negotiated at arm's length from a Person not
     an Affiliate; provided, however, that the Company may (x) enter into,
                   --------  -------
     at arm's length, (A) gas marketing and other arrangements related to
     natural gas and natural gas liquids, including, without limitation, a
     gas marketing agreement with SFER and Santa Fe Energy Operating
     Partners, L.P., in substantially the form annexed to the Merger
     Agreement, and (B) other arrangements not to exceed at any time
     outstanding $2,000,000 in the aggregate, with Beck & Root Fuel Company
     or as otherwise permitted under paragraph 6C(3), upon terms no less
     favorable to the Company than could be obtained if no relationship
     existed, (y) pay compensation and other employee related benefits to
     each of T. K. Hendrick and J. Michael Adcock in connection with his
     former employment with the Company and (z) pay fees and expenses to
     Bank of Oklahoma, N.A. in payment of Bank of Oklahoma's services as
     recordkeeper of the Company's employee stock ownership/401K plan.

          6C(12).  TRANSFER OF ASSETS TO SUBSIDIARIES.  Transfer any assets
     to any Subsidiary other than as permitted pursuant to paragraphs
     6C(2), 6C(3) and 6C(5).

          6C(13).  SUBSIDIARY DIVIDEND RESTRICTIONS.  Enter into, or be
     otherwise subject to, any contract or agreement (including its
     certificates or articles of incorporation) which limits the amount of,
     or otherwise imposes restrictions on the payment of, dividends by any
     Subsidiary, other than the BMO Credit Agreement.

          6D.  ISSUANCE OF STOCK BY SUBSIDIARIES; CERTAIN CHANGES.  (a) 
     The Company will not permit any Subsidiary (either directly,

























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     or indirectly by the issuance of rights or options for, or securities
     convertible into or exercisable for, such shares) to issue, sell or
     otherwise dispose of any shares of any class of the stock of such
     Subsidiary (other than directors' qualifying shares).

          (b)  Except in connection with any exercises, exchanges,
     redemptions or conversions otherwise permitted hereby or as otherwise
     contemplated hereby, the Company (i) will not, and will not permit any
     Subsidiary to, make any changes in its capital structure, its
     certificate of incorporation or by-laws (except in connection with the
     issuance of additional shares of any class or series of capital stock,
     whether such class or series is now existing or hereafter created, and
     exercises, exchanges, redemptions or conversions of any such shares
     permitted under paragraph 6B) or (ii) will not, and will not permit
     any Subsidiary to, make any changes in any business objective,
     purpose, or operations which might reasonably be expected to adversely
     affect the repayment of the obligations hereunder or have a Material
     Adverse Effect.

          6E.  COMPLIANCE WITH ERISA.  The Company will not, and will not
     permit any ERISA Affiliate to:

               (i)  engage in any transaction in connection with which the
          Company or any of its Subsidiaries would be subject to either a
          material civil penalty assessed pursuant to section 502(i) of
          ERISA or a material tax imposed by section 4975 of the Code;

               (ii)  terminate or partially terminate any Plan if such
          termination would result in liability of the Company or an ERISA
          Affiliate to the PBGC in an amount exceeding $50,000;

               (iii)  fail to make full payment when due of all amounts
          which the Company, any of its Subsidiaries or an ERISA Affiliate
          is required to contribute to any Plan or Multiemployer Plan under
          section 302 of ERISA and section



























                                       35
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          412 of the Code, or permit to exist any accumulated funding
          deficiency, whether or not waived, with respect to any such Plan;

               (iv)  fail to make any payments when due to any
          Multiemployer Plan which the Company or any ERISA Affiliate is
          required to make under any agreement relating to such
          Multiemployer Plan or any law pertaining thereto;

               (v)  adopt or become obligated to contribute to any new
          Multiemployer Plan or other Plan subject to Section 412 of the
          Code;

               (vi)  adopt or become obligated to contribute to any
          "employee welfare benefit plan" as defined under Section 3(l) of
          ERISA that provides health or life insurance to participants
          after their termination of employment (except those benefits
          required to be provided under Section 4980B of the Code or where
          the obligation to contribute is not material); or

               (vii)  amend or permit an ERISA Affiliate to amend a Plan
          resulting in an increase in current liability for the plan year
          such that either the Company or the ERISA Affiliate is required
          to provide security in a material amount to such plan under
          Section 401(a)(29) of the Code.

               The Company agrees (x) upon request by the Significant
     Holders, to request a current statement of withdrawal liability from
     each Multiemployer Plan to which the Company or an ERISA Affiliate
     contributes or to which the Company or an ERISA Affiliate has an
     obligation to contribute and (y) to transmit a copy of such statement
     to each Significant Holder, so long as such Significant Holder or its
     nominee shall be the holder of any Notes, and to each other
     Significant Holder of any Note, within 15 days after the Company
     receives the same.




























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          6F.  MAINTENANCE OF BUSINESS.  The Company will not and will not
     permit any Subsidiary to engage in any business other than the
     business currently engaged in by the Company and its Subsidiaries and
     business ancillary thereto, including, without limitation, the
     gathering, marketing, sales, purchasing, storing, transportation and
     processing of natural gas, natural gas liquids and petroleum products
     and the hedging of risk positions related to the operation of a
     natural gas marketing business.

          6G.  MODIFICATION OF MATERIAL AGREEMENTS.  The Company will not,
     and will not permit any of its Subsidiaries to, alter, amend, modify,
     rescind, terminate or waive any of their respective rights under, or
     take or omit to take any action, which act or omission would
     constitute a material default or an event of default pursuant to, or
     non-compliance with any contract, lease, mortgage, deed of trust or
     instrument to which it is a party or by which it or any of its
     property is bound, or any document creating a Lien; provided, however,
                                                         --------  -------
     that (i) with respect to any contractual obligation other than this
     Agreement, the Registration Rights Agreement, the Trust Agreement, the
     Notes, the Collateral Documents and the BMO Credit Agreement, the
     Company and its Subsidiaries may do so if the consequences thereof
     would not have a Material Adverse Effect and (ii) with respect to the
     BMO Credit Agreement, without the prior written consent of the
     Required Holders, neither the Company nor any Subsidiary a party
     thereto will amend or modify any provision which amendment or
     modification would have a Material Adverse Effect (including, without
     limitation, any such amendment or modification which would permit the
     aggregate amount of revolving credit in the form of loans to the
     Company that may be outstanding at any time thereunder to exceed
     $10,000,000), provided, that the Company may enter into any
                   --------
     modification or amendment of the BMO Credit Agreement which would (a)
     increase the aggregate amount of revolving credit in the form of
     letters of credit that may be issued thereunder by up to $10,000,000,
     if such increase is for the reasonable working capital needs of the
     Company and its Subsidiaries, or (b) without limiting increases
     permitted by clause (a) above, would increase the amount of Debt
























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     (including letters of credit) that may be incurred thereunder by the
     amount of Debt permitted to be incurred from time to time under
     paragraph 6C(2)(vii); provided, further, that in the event of any
                           --------  -------
     breach or event of default by a Person other than the Company or any
     of its Subsidiaries under any such material contractual obligation,
     the Company shall promptly notify the Purchasers of any such breach or
     event of default.

          7.  EVENTS OF DEFAULT.

          7A.  ACCELERATION.  If any of the following events shall occur
     and be continuing for any reason whatsoever (and whether such
     occurrence shall be voluntary or involuntary or come about or be
     effected by operation of law or otherwise):

               (i)  the Company defaults in the payment of any principal of
          or interest on any Note when the same shall become due, either by
          the terms thereof or otherwise as herein provided and such
          default continues for more than one (1) day after the date due;
          or

               (ii)  the Company or any Subsidiary defaults (whether as
          primary obligor or as guarantor or other surety) in any payment
          of principal of or interest on any other obligation for money
          borrowed (or any Capitalized Lease Obligation, any obligation
          under a conditional sale or other title retention agreement, any
          obligation issued or assumed as full or partial payment for
          property whether or not secured by a purchase money mortgage or
          any obligation under notes payable or drafts accepted represent-
          ing extensions of credit) beyond any period of grace provided
          with respect thereto, or the Company or any Subsidiary fails to
          perform or observe any other agreement, term or condition
          contained in any agreement under which any such obligation is
          created (or if any other event thereunder or under any such
          agreement shall occur and be continuing) and the effect of such
          failure or other event is to cause, or to permit the holder or
          holders of such obligation (or a trustee on behalf
























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          of such holder or holders) to cause, such obligation to become
          due (or to be repurchased by the Company or any Subsidiary) prior
          to any stated maturity, provided that the aggregate amount of all
                                  --------
          obligations as to which such a payment default shall occur and be
          continuing or such a failure or other event causing or permitting
          acceleration (or resale to the Company or any Subsidiary) shall
          occur and be continuing exceeds $1,000,000; or

               (iii)  any representation or warranty made by the Company
          herein, in any Collateral Document or by the Company or any of
          its officers in any writing furnished to the Purchasers in
          connection with or pursuant to this Agreement shall be false in
          any material respect on the date as of which made and shall
          continue to be false 30 days after the Company receives notice
          thereof from the Purchasers; or

               (iv)  the Company fails to perform or observe (a) any term,
          covenant or agreement contained in paragraph 5A and such failure
          shall not be remedied with 15 days, or (b) any term, covenant or
          agreement contained in paragraph 6B, 6C(1) through 6C(13) (other
          than through the imposition of a non-consensual Lien by any
          Person not a Subsidiary or Affiliate of the Company), 6D, or 6G
          and such failure shall not be remedied within one Business Day or
          (c) any other agreement, term, covenant or condition contained
          herein or in any Collateral Document or the Registration Rights
          Agreement and such failure shall not be remedied within 30 days
          after notice from the Purchasers; or

               (v)  the Company or any Subsidiary makes an assignment for
          the benefit of creditors or is generally not paying its debts as
          such debts become due; or

               (vi)  any decree or order for relief in respect of the
          Company or any Subsidiary is entered under any bankruptcy,
          reorganization, compromise, arrangement, insolvency, readjustment
          of debt, dissolution or liquidation or similar

























                                       39
<PAGE>

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          law, whether now or hereafter in effect (each, a "BANKRUPTCY
          LAW"), of any jurisdiction; or

               (vii)  the Company or any Subsidiary petitions or applies to
          any tribunal for, or consents to, the appointment of, or taking
          possession by, a trustee, receiver, custodian, liquidator or
          similar official of the Company or any Subsidiary, or of any
          substantial part of the assets of the Company or any Subsidiary,
          or commences a voluntary case under the Bankruptcy Law of the
          United States or any proceedings relating to the Company or any
          Subsidiary under the Bankruptcy Law of any other jurisdiction; or

               (viii)  any such petition or application is filed, or any
          such proceedings are commenced, against the Company or any
          Subsidiary and the Company or such Subsidiary by any act
          indicates its approval thereof, consent thereto or acquiescence
          therein, or an order, judgment or decree is entered appointing
          any such trustee, receiver, custodian, liquidator or similar
          official, or approving the petition in any such proceedings, and
          such order, judgment or decree remains unstayed and in effect for
          more than 60 days; or

               (ix)  any order, judgment or decree is entered in any pro-
          ceedings against the Company decreeing the dissolution of the
          Company and such order, judgment or decree remains unstayed and
          in effect for more than 60 days; or

               (x)  any order, judgment or decree is entered in any pro-
          ceedings against the Company or any Subsidiary decreeing a split-
          up of the Company or such Subsidiary which requires the
          divestiture of assets representing a substantial part, or the
          divestiture of the stock of a Subsidiary whose assets represent a
          substantial part, of the consolidated assets of the Company and
          its Subsidiaries (determined in accordance with generally
          accepted accounting principles) or which requires the divestiture
          of assets, or stock of a Subsidiary, which shall have contributed
          a substantial part of the

























                                       40
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          consolidated net income of the Company and its Subsidiaries
          (determined in accordance with generally accepted accounting
          principles) for any of the three fiscal years then most recently
          ended, and such order, judgment or decree remains unstayed and in
          effect for more than 60 days; or

               (xi)  any judgment or order or judgments or orders for the
          payment of money in an amount in excess of $1,000,000 in the
          aggregate is rendered against the Company or any Subsidiary and
          within ten (10) days (or, where such judgment or order is covered
          by insurance and the insurer has admitted liability, 30 days)
          after entry thereof, such judgment or order is not discharged or
          execution thereof vacated, bonded or stayed pending appeal; or

               (xii)  the Company or any ERISA Affiliate becomes subject to
          withdrawal liability or liability to the PBGC (other than for
          unpaid annual premiums not yet due) in an amount exceeding
          $500,000; or

               (xiii)  any Collateral Document shall cease to create a
          valid and perfected security interest with such priority as is
          contemplated by such document in any of the collateral purported
          to be covered thereby or the Company or any Subsidiary shall so
          state in writing except with respect to any bank account or
          disbursing account of the Company; 

               (xiv)  the Company defaults in the performance of any
          provision of the Trust Agreement other than Sections 9.04 and
          10.02(a) thereof or defaults in the performance of Section 9.04
          or 10.02(a) of the Trust Agreement for a period of 30 days or
          more;

     then (a) if such event is an Event of Default specified in clause (i)
     of this paragraph 7A, the holder of any Note (other than the Company
     or any of its Subsidiaries or Affiliates) may at its option, by notice
     in writing to the Company, declare such Note to be, and such Note
     shall thereupon be and become, immediately due

























                                       41
<PAGE>

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     and payable at par together with interest accrued thereon, without
     presentment, demand, protest or other notice of any kind, all of which
     are hereby waived by the Company, (b) if such event is an Event of
     Default specified in clause (vi), (vii) or (viii) of this paragraph 7A
     with respect to the Company, all of the Notes at the time outstanding
     shall automatically become immediately due and payable at par together
     with interest accrued thereon, without presentment, demand, protest or
     notice of any kind, all of which are hereby waived by the Company, and
     (c) if such event is not an Event of Default specified in clause (i),
     (vi), (vii) or (viii) of this paragraph 7A with respect to the
     Company, the Required Holder(s) may at its or their option, by notice
     in writing to the Company, declare all of the Notes to be, and all of
     the Notes shall thereupon be and become, immediately due and payable
     together with interest accrued thereon, without presentment, demand,
     protest or other notice of any kind, all of which are hereby waived by
     the Company.

          7B.  RESCISSION OF ACCELERATION.  At any time after any or all of
     the Notes shall have been declared immediately due and payable
     pursuant to paragraph 7A, the Required Holder(s) may, by notice in
     writing to the Company, rescind and annul such declaration and its
     consequences if (i) the Company shall have paid all overdue interest
     on the Notes and interest on such overdue interest at the rate
     specified in the Notes which shall have become due other than by
     reason of such declaration, (ii) the Company shall not have paid any
     amounts which have become due solely by reason of such declaration,
     (iii) all Events of Default and Defaults, other than non-payment of
     amounts which have become due solely by reason of such declaration,
     shall have been cured or waived pursuant to paragraph 12C, and (iv) no
     judgment or decree shall have been entered for the payment of any
     amounts due pursuant to the Notes or this Agreement.  No such
     rescission or annulment shall extend to or affect any subsequent Event
     of Default or Default or impair any right arising therefrom.

          7C.  NOTICE OF ACCELERATION OR RESCISSION.  Whenever any Note
     shall be declared immediately due and payable pursuant to


























                                       42
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     paragraph 7A or any such declaration shall be rescinded and annulled
     pursuant to paragraph 7B, the Company shall forthwith give written
     notice thereof to the holder of each Note at the time outstanding.

          7D.  OTHER REMEDIES.  If any Event of Default or Default shall
     occur and be continuing, the holder of any Note may proceed to protect
     and enforce its rights under this Agreement and such Note by
     exercising such remedies as are available to such holder in respect
     thereof under applicable law, either by suit in equity or by action at
     law, or both, whether for specific performance of any covenant or
     other agreement contained in this Agreement or in aid of the exercise
     of any power granted in this Agreement.  No remedy conferred in this
     Agreement upon the holder of any Note is intended to be exclusive of
     any other remedy, and each and every such remedy shall be cumulative
     and shall be in addition to every other remedy conferred herein or now
     or hereafter existing at law or in equity or by statute or otherwise.

          8.  REPRESENTATIONS, COVENANTS AND WARRANTIES.  The Company
     represents, covenants and warrants as of the Effective Date, after
     giving effect to the Merger, as follows:

          8A.  ORGANIZATION; AUTHORITY; ENFORCEABILITY.  Each of the
     Company and its Subsidiaries is a corporation duly organized, validly
     existing and in good standing under the laws of its jurisdiction of
     incorporation and has all requisite corporate power and authority to
     own and operate its properties and to carry on its business as
     presently conducted, and in the case of the Company and its
     Subsidiaries (to the extent a party thereto), to enter into and
     perform all of its obligations under this Agreement, the Registration
     Rights Agreement, the Trust Agreement and the Collateral Documents, to
     issue and deliver, and perform all of its obligations under, the
     Securities and to consummate each of the Related Transactions.  Each
     of the Company and its Subsidiaries is duly licensed or qualified to
     do business as a foreign corporation in each state where the failure
     to be so licensed or qualified would have a material adverse effect on
     the


























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     financial condition or operations of the Company and its Subsidiaries
     taken as a whole and has all corporate power, material licenses,
     franchises and other governmental authorizations and approvals
     necessary to carry on its present business, with respect to which the
     failure to possess would have a material adverse effect on the
     financial condition or operations of the Company and its Subsidiaries
     taken as a whole.  Each of this Agreement is, the Registration Rights
     Agreement and the Collateral Documents upon execution and delivery
     will be, and the Notes when issued and delivered hereunder will be,
     legal, valid, binding and enforceable obligations of the Company and
     its Subsidiaries party thereto.  Each Subsidiary of the Company (after
     giving effect to the Merger and the HEPSI Merger) is listed on
     Schedule 6C(3) under the heading "Subsidiaries of Hadson Corporation."

          8B.  FINANCIAL STATEMENTS.  The Company has furnished each
     Purchaser with the following financial statements, identified by a
     principal financial officer of the Company:  (i) a consolidated
     balance sheet of the Company and its Subsidiaries as at December 31 in
     each of the years 1990 to 1992, inclusive, and consolidated statements
     of income, stockholders' equity and cash flows of the Company and its
     Subsidiaries for each such year, all reported on by Price Waterhouse;
     and (ii) a consolidating and consolidated balance sheet of the Company
     and its Subsidiaries as at September 30 in each of the years 1992 and
     1993 and consolidated statements of income and cash flows for the
     nine-month period ended on each such date, prepared by the Company. 
     Such financial statements (including any related schedules and/or
     notes) are true and correct in all material respects (subject, as to
     interim statements, to changes resulting from audits and year-end
     adjustments), have been prepared in accordance with generally accepted
     accounting principles consistently followed throughout the periods
     involved (except as otherwise stated therein or in the notes, if any,
     thereto) and show all liabilities, direct and contingent, of the
     Company and its Subsidiaries required to be shown in accordance with
     such principles.  The balance sheets fairly present the condition of
     the Company and its Subsidiaries



























                                       44
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     as at the dates thereof, and the statements of income and cash flows
     fairly present the results of the operations of the Company and its
     Subsidiaries and their cash flows for the periods indicated.  No event
     has occurred since December 31, 1992 which has had or could have a
     Material Adverse Effect other than as set forth on Schedule 3A(6).

          8C.  ACTIONS PENDING.  Except as otherwise set forth on Schedule
     8C, there is no action, suit, investigation or proceeding pending or,
     to the knowledge of the Company, threatened against the Company or any
     of its Subsidiaries, or any properties or rights of the Company or any
     of its Subsidiaries, by or before any court, arbitrator or
     administrative or governmental body which might result in a Material
     Adverse Effect.

          8D.  OUTSTANDING DEBT.  Neither the Company nor any of its
     Subsidiaries has outstanding any Debt except as permitted by paragraph
     6C(2) or as set forth on Schedule 8D.  Except as set forth on Schedule
     8D, there exists no default under the provisions of any instrument
     evidencing such Debt or of any agreement relating thereto.

          8E.  TITLE TO PROPERTIES.  The Company and each of its Subsidiar-
     ies has good and indefeasible title to its respective real properties
     (other than properties which it leases) and good title to all of its
     other respective properties and assets except where failure to have
     such title to such real property, property or assets would not have a
     Material Adverse Effect, including the properties and assets reflected
     in the balance sheet as at December 31, 1992 referred to in paragraph
     8B (other than properties and assets disposed of in the ordinary
     course of business and any other assets and properties disposed of
     since such date and described on Schedule 8E hereto), subject to no
     Lien of any kind except Liens permitted by paragraph 6C(1).  All
     leases necessary in any material respect for the conduct of the
     respective businesses of the Company and its Subsidiaries are valid
     and subsisting and are in full force and effect.  




























                                       45
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          8F.  TAXES.  The Company and each of its Subsidiaries has each
     filed all federal, state and other income tax returns which, to the
     knowledge of the Responsible Officers of the Company, are required to
     be filed by it and each has paid all taxes as shown on such returns
     and on all assessments received by it to the extent that such taxes
     have become due, except such taxes as are being contested in good
     faith by appropriate proceedings for which adequate reserves have been
     established in accordance with generally accepted accounting princi-
     ples.

          8G.  CONFLICTING AGREEMENTS AND OTHER MATTERS.  Neither the
     Company nor any of its Subsidiaries is a party to any contract or
     agreement or subject to any charter or other corporate restriction
     which materially and adversely affects the business, property or
     assets, or financial condition of the Company and its Subsidiaries
     taken as a whole.  Neither the execution nor delivery of this
     Agreement, the Registration Rights Agreement, the Trust Agreement or
     any Collateral Document nor the performance of any Related
     Transaction, nor the issuance and delivery of the Securities, nor
     fulfillment of nor compliance with the terms and provisions hereof and
     thereof will conflict with, or result in a breach of the terms,
     conditions or provisions of, or constitute a default under, or result
     in any violation of, or result in the creation of any Lien upon (other
     than Liens in favor of the Purchasers, Liens in favor of BMO and Liens
     in favor of the Collateral Agent) any of the properties or assets of
     the Company or any of its Subsidiaries pursuant to, the New Restated
     Certificate of Incorporation or the By-laws or the charter or bylaws
     of any of its Subsidiaries, any award of any arbitrator or any agree-
     ment (including any agreement with stockholders), instrument, order,
     judgment, decree, statute, law, rule or regulation to which the
     Company or any of its Subsidiaries is subject except as set forth in
     the agreements listed in Schedule 8G attached hereto.  Neither the
     Company nor any of its Subsidiaries is a party to, or otherwise
     subject to any provision contained in, any instrument evidencing
     Indebtedness of the Company or such Subsidiary, any agreement relating
     thereto, or any other contract or agreement (including its charter) in
     each

























                                       46
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     case which limits the amount of, or otherwise imposes restrictions on
     the incurring of, Debt of the Company of the type to be evidenced by
     the Notes except as set forth in the agreements listed in Schedule 8G
     attached hereto.

          8H.  OFFERING OF SECURITIES.  A registration statement on Form S-
     4 with respect to the Merger has been prepared by the Company in
     conformity in all material respects with the requirements of the
     Securities Act and the rules and regulations of the Securities and
     Exchange Commission thereunder and filed with the Securities and
     Exchange Commission and has become effective.  Such registration
     statement may have been amended prior to the Date of Closing, any such
     amendment was so prepared and filed, and any such amendment filed
     prior to the Date of Closing but after the effective date of such
     registration statement has become effective.  No stop order suspending
     the effectiveness of such registration statement has been issued and
     no proceeding for that purpose has been instituted or, to the
     knowledge of the Company, threatened by the Securities and Exchange
     Commission.

          8I.  USE OF PROCEEDS.  Neither the Company nor any Subsidiary
     owns or has any present intention of acquiring any "margin stock" as
     defined in Regulation G (12 CFR Part 207) of the Board of Governors of
     the Federal Reserve System ("MARGIN STOCK").  The Exchange Notes are
     being issued in exchange for the Existing Notes and the Merger Notes
     and the Equity Securities will be issued upon Conversion of the
     Existing Class C Common and the Existing Senior Preferred.  None of
     the proceeds of the Notes will be used, directly or indirectly, for
     the purpose, whether immediate, incidental or ultimate, of purchasing
     or carrying any margin stock or for the purpose of maintaining,
     reducing or retiring any Indebtedness which was originally incurred to
     purchase or carry any stock that is currently a margin stock or for
     any other purpose which might constitute this transaction a "purpose
     credit" within the meaning of such Regulation G.  Neither the Company
     nor any agent acting on its behalf has taken or will take any action
     which might cause this Agreement or the


























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     Notes to violate Regulation G, Regulation T or any other regulation of
     the Board of Governors of the Federal Reserve System or to violate the
     Exchange Act, in each case as in effect now or as the same may
     hereafter be in effect.

          8J.  ERISA.  No accumulated funding deficiency (as defined in
     section 302 of ERISA and section 412 of the Code), whether or not
     waived, exists with respect to any Plan (other than a Multiemployer
     Plan).  No liability to the PBGC (other than for unpaid annual
     premiums not yet due) has been or is expected by the Company or any
     ERISA Affiliate to be incurred with respect to any Plan (other than a
     Multiemployer Plan) by the Company, any Subsidiary or any ERISA
     Affiliate.  Neither the Company, any Subsidiary nor any ERISA
     Affiliate has incurred or presently expects to incur any withdrawal
     liability under Title IV of ERISA with respect to any Multiemployer
     Plan.  Each of the execution and delivery of this Agreement, the
     performance of the Related Transactions, the Trust Agreement, the
     Registration Rights Agreement and the Collateral Documents, the
     performance of the Related Transactions and the issuance and delivery
     of the Securities will be exempt from, or will not involve any
     transaction which is subject to, the prohibitions of section 406 of
     ERISA and will not involve any transaction in connection with which a
     penalty could be imposed under section 502(i) of ERISA or a tax could
     be imposed pursuant to section 4975 of the Code.  The representation
     by the Company in the immediately preceding sentence is made in
     reliance upon and subject to the accuracy of each Purchaser's
     representation in paragraph 9B.  Schedule 8J lists each Plan of the
     Company and of each Subsidiary that is subject to ERISA except for
     those Plans which are defined in Section 3(1) of ERISA and which do
     not provide health or life insurance coverage after termination of
     employment (except for benefits required to be provided under Section
     4980B of the Code).

          8K.  GOVERNMENTAL CONSENT.  Neither the nature of the Company or
     of any Subsidiary, nor any of their respective businesses or
     properties, nor any relationship between the


























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     Company or any Subsidiary and any other Person, nor any circumstance
     in connection with the offering, issuance or delivery of the
     Securities is such as to require any authorization, consent, approval,
     exemption or other action by or notice to or filing with any court or
     administrative or governmental or regulatory body (other than (i) the
     filing of any required financing statements and required continuations
     thereof, (ii) with respect to the registration statement prepared and
     filed by the Company with respect to the Merger pursuant to the
     Securities Act and the Proxy Statement - Prospectus and any amendments
     or supplements thereto and related filings pursuant to applicable
     state securities laws, and any amendments or supplements thereto,
     (iii) routine filings after the Effective Date with the Securities and
     Exchange Commission and/or state Blue Sky authorities and (iv) those
     authorizations, consents, approvals, exemptions, notices or filings
     which have been obtained or made and are in full force and effect,
     copies of which have been provided to the Purchasers) in connection
     with the execution and delivery of this Agreement, the Hadson Security
     Agreement, the Pledge Agreement, the Trust Agreement or the
     Registration Rights Agreement, the offering, issuance or delivery of
     the Securities, the performance of the Related Transactions or (except
     as specifically contemplated by the Registration Rights Agreement and
     except for filings required under the HSR Act (as defined below) in
     connection with the deliveries of shares of New Common to the
     Purchasers pursuant to the Trust Agreement) fulfillment of or compli-
     ance with the terms and provisions hereof or of the Securities.  The
     Company shall make any filing that may be required (or reasonably
     requested by a Purchaser or a Transferee) pursuant to the Hart-Scott-
     Rodino Antitrust Improvements Act of 1976, as amended, and the rules
     and regulations thereunder (the "HSR ACT"), in connection with the
     Related Transactions.

          8L.  ENVIRONMENTAL COMPLIANCE.  The Company and its Subsidiaries
     and all of their respective properties and facilities have complied at
     all times and in all respects with all federal, state, local and
     regional statutes, laws, ordinances and judicial or administrative
     orders, judgments, rulings and


























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     regulations relating to protection of the environment except, in any
     such case, where failure to comply would not result in a material
     adverse effect on the business, condition, financial or otherwise, or
     operations of the Company and its Subsidiaries taken as a whole.

          8M.  DISCLOSURE.  Neither this Agreement nor any other document,
     certificate or statement furnished to any Purchaser by or on behalf of
     the Company in connection herewith contains any untrue statement of a
     material fact or omits to state a material fact necessary in order to
     make the statements contained herein and therein not misleading. 
     There is no fact peculiar to the Company or any of its Subsidiaries
     which materially adversely affects or in the future may (so far as the
     Company can now foresee) materially adversely affect the business,
     property or assets, or financial condition of the Company and its
     Subsidiaries, taken as a whole, and which has not been set forth in
     this Agreement or in the other documents, certificates and statements
     furnished to each Purchaser by or on behalf of the Company prior to
     the date hereof in connection with the transactions contemplated
     hereby.  The Proxy Statement - Prospectus did not, as of the date
     thereof or as of the date of any supplement thereto distributed by the
     Company prior to the Date of Closing, contain any untrue statement of
     a material fact or omit to state any material fact required to be
     stated in order to make the statements therein, in the light of the
     circumstances under which such statements were made, not misleading. 
     The projections of the Company and its Subsidiaries provided to the
     Purchasers are reasonably based on the assumptions set forth therein
     and the best information available to the officers of the Company at
     the time of preparation thereof.  To the best knowledge of the
     Company, no facts exist which would result in any material adverse
     change in any of such projections.

          8N.  CAPITAL STOCK AND RELATED MATTERS.  On the Date of Closing
     and after giving effect to the transactions contemplated hereby and to
     the Related Transactions, (i) the authorized capital stock of the
     Company will consist of 60,000,000 shares,



























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     of which 35,000,000 shares will represent New Common, 5,193,520 shares
     will represent Senior Preferred Stock, and 4,983,180 shares will
     represent New Junior Preferred Stock, (ii) no shares of capital stock
     of the Company will be owned or held by or for the account of the
     Company or any of its Subsidiaries, (iii) except for the New Junior
     Preferred Stock, neither the Company nor any of its Subsidiaries has
     or will have outstanding any stock or securities convertible into or
     exchangeable for any shares of capital stock of the Company of any
     Subsidiary, any rights to subscribe for or to purchase, or any options
     for the purchase of, or any agreements providing for the issuance
     (contingent or otherwise) of, or any calls, commitments or claims of
     any other character relating to the issuance of, any capital stock of
     the Company or any Subsidiary, or any stock or securities convertible
     into or exchangeable for any such capital stock (other than as set
     forth in the New Restated Certificate of Incorporation or the Merger
     Agreement and other than awards granted under the Equity Incentive
     Plan and the Special Options), and (iv) neither the Company nor any of
     its Subsidiaries will be subject to any obligation (contingent or
     otherwise) to repurchase, otherwise acquire or retire any shares of
     stock (other than as set forth in the New Restated Certificate of
     Incorporation, the Equity Incentive Plan, the Merger Agreement, the
     Special Options or as specifically required or permitted hereby).

          8O.  PATENTS, LICENSES, ETC.  The Company and its Subsidiaries
     own or have the right to use patents, trademarks, service-marks, trade
     names, copyrights, permits, licenses, franchises and other rights,
     free from burdensome restrictions, which are reasonably necessary for
     the operations presently conducted by the Company and its Subsidiaries
     and as proposed to be conducted by the Company, the failure of which
     to possess would have a Material Adverse Effect on the Company and its
     Subsidiaries taken as a whole.

          8P.  INVESTMENT COMPANY ACT.  Neither the Company nor any of its
     Subsidiaries is an "investment company," or a company




























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     "controlled" by an "investment company," within the meaning of the
     Investment Company Act of 1940, as amended.

          8Q.  PUBLIC UTILITY HOLDING COMPANY ACT.  Neither the Company nor
     any of its Subsidiaries is a "holding company," or a "subsidiary
     company" of a "holding company," or an "affiliate" of a "holding
     company" or of a "subsidiary company" of a "holding company," as such
     terms are defined in the Public Utility Holding Company Act of 1935,
     as amended.

          8R.  SECURITY INTERESTS.  Except as provided herein and subject
     to the Liens permitted under paragraph 6C(1), the Liens on and
     security interests created in the Collateral under this Agreement and
     the Collateral Documents will at all times have the priority
     contemplated by the Collateral Documents and, upon the filing of the
     appropriate financing statements and/or the taking of possession of
     such Collateral, perfected security interests in the Collateral
     (except for bank accounts and disbursement accounts of the Company) as
     security for the obligations described therein and the Collateral will
     not be subject to any liens or security interests of any other person
     except as permitted hereunder.

          8S.  DELIVERY OF BMO CREDIT AGREEMENT.  The Company has delivered
     to each Purchaser on or prior to the date hereof a true, correct and
     complete copy of the BMO Credit Agreement, including all amendments
     and waivers of any provision thereof.

          8T.  VALUE OF CERTAIN SUBSIDIARIES.  The aggregate value, as of
     the Closing Date, of the assets of all of the Subsidiaries listed on
     Schedule 8T, taken as a whole, does not exceed $100,000.

          9.  REPRESENTATIONS OF EACH PURCHASER.  Each Purchaser represents
     as follows:

          9A.  NATURE OF PURCHASE.  Such Purchaser is not acquiring the
     Securities to be received by it hereunder with a view to or


























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     for sale in connection with any distribution thereof within the
     meaning of the Securities Act, provided that the disposition of such
     Purchaser's property shall at all times be and remain within its
     control.

          9B.  SOURCE OF FUNDS.  No part of the funds being used by such
     Purchaser to pay the purchase price of the Securities being purchased
     by such Purchaser hereunder constitutes assets allocated to any
     separate account maintained by such Purchaser.  For the purpose of
     this paragraph 9B, the term "separate account" shall have the meaning
     specified in section 3(17) of ERISA.

          10.  DEFINITIONS AND ACCOUNTING TERMS.

          10A.  DEFINITIONS.  For the purpose of this Agreement, the
     following terms shall have the meanings specified with respect thereto
     below (such meanings to be equally applicable to both the singular and
     plural forms of the terms defined):

               "AFFILIATE" shall mean any Person other than a Purchaser
     directly or indirectly controlling, controlled by, or under direct or
     indirect common control with, the Company, except a Subsidiary.  A
     Person shall be deemed to control a corporation if such Person
     possesses, directly or indirectly, the power to direct or cause the
     direction of the management and policies of such corporation, whether
     through the ownership of voting securities, by contract or otherwise.

               "AGPC" shall have the meaning specified in the Preliminary
     Statement.

               "AGREEMENT" shall have the meaning specified in the
     Preliminary Statement.

               "ASSET SALE" shall mean any sale or other disposition of
     assets, including, without limitation, the stock or Debt of
     Subsidiaries (including, without limitation, by merger or
     consolidation, and whether by operation of law or otherwise),

























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     made on or after the Effective Date by the Company or any Subsidiary,
     other than the sale or other disposition of assets by the Company or
     any Subsidiary in the ordinary course of business.

               "ASSIGNMENT AND SECURITY AGREEMENT" shall mean the
     Assignment and Security Agreement, dated as of December 14, 1993, made
     by HD Energy and the Company to the Collateral Agent.

               "BANKRUPTCY LAW" shall have the meaning specified in clause
     (vi) of paragraph 7A.

               "BMO" shall mean Bank of Montreal.

               "BMO COLLATERAL" shall have the meaning specified in clause
     (ix) of paragraph 6C(1).

               "BMO CREDIT AGREEMENT" shall mean the Credit Agreement dated
     as of the date hereof, by and among the Company, the Subsidiary
     Borrowers, and BMO, individually and as Agent for the banks listed on
     the signature pages thereof, as amended, supplemented, extended,
     renewed or otherwise modified from time to time in accordance with the
     requirements of paragraph 6G.

               "BUSINESS DAY" shall mean any day other than a Saturday, a
     Sunday or a day on which commercial banks in New York City are
     required or authorized to be closed.

               "BY-LAWS" shall have the meaning specified in paragraph
     3A(1)(v).

               "CAPITALIZED LEASE OBLIGATION" shall mean any rental obliga-
     tion which, under generally accepted accounting principles, would be
     required to be capitalized on the books of the Company or any Subsid-
     iary, taken at the amount thereof accounted for as indebtedness (net
     of interest expense) in accordance with such principles.



























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               "CASH PAYMENTS" shall have the meaning specified in
     paragraph 1.

               "CERTIFICATE OF MERGER" shall have the meaning specified in
     paragraph 1.

               "CLOSING" shall have the meaning specified in paragraph 2.

               "CODE" shall mean the Internal Revenue Code of 1986, as
     amended.

               "COLLATERAL" shall mean the property pledged under the
     Collateral Documents, including the proceeds and products thereof.

               "COLLATERAL AGENT" shall mean Harris Trust and Savings Bank,
     in its capacity as Collateral Agent under the Collateral Documents.

               "COLLATERAL AGENCY AGREEMENT" shall have the meaning
     specified in paragraph 3.

               "COLLATERAL DOCUMENTS" means the Hadson Security Agreement,
     the Pledge Agreement, the NuHPI Pledge Agreement, the HD Energy Pledge
     Agreement, the Hadson Defense Security Agreement and the Assignment
     and Security Agreement, and all other security agreements, deeds of
     trust, mortgages, chattel mortgages, pledges, guaranties, financing
     statements, continuation statements, extension agreements and other
     agreements or instruments now or hereafter delivered by the Company or
     any Subsidiary to the Purchasers in connection with this Agreement or
     to the Collateral Agent in connection with the Collateral Agency
     Agreement or any transaction contemplated hereby to secure or guaranty
     the payment of any part of the Notes or the obligations hereunder or
     thereunder.






























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               "COMPANY" shall have the meaning specified in the
     introductory sentence.

               "CONVERSIONS" shall have the meaning specified in the
     Preliminary Statement.

               "CURRENT DEBT" shall mean, with respect to any Person, all
     Indebtedness of such Person for borrowed money which by its terms or
     by the terms of any instrument or agreement relating thereto matures
     on demand or within one year from the date of the creation thereof and
     is not directly or indirectly renewable or extendible at the option of
     the debtor to a date more than one year from the date of the creation
     thereof, provided that Indebtedness for borrowed money outstanding
              --------
     under a revolving credit or similar agreement which obligates the
     lender or lenders to extend credit over a period of more than one year
     shall constitute Funded Debt and not Current Debt, even though such
     Indebtedness by its terms matures on demand or within one year from
     the date of the creation thereof.

               "DATE OF CLOSING" shall have the meaning specified in
     paragraph 2.

               "DEBT" shall mean Current Debt and Funded Debt.

               "EFFECTIVE DATE" shall mean the date upon which each of the
     Related Transactions and the transactions contemplated hereby is
     consummated.

               "EQUITY INCENTIVE PLAN" shall mean the Company's (1992)
     Equity Incentive Plan, as amended and restated in the form included as
     an annex to the Proxy Statement - Prospectus, with such changes to
     such form of amendment as shall be reasonably acceptable to the
     Purchasers.

               "EQUITY SECURITIES" shall have the meaning specified in
     paragraph 1.

























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               "ERISA" shall mean the Employee Retirement Income Security
     Act of 1974, as amended.

               "ERISA AFFILIATE" shall mean any corporation which is a
     member of the same controlled group of corporations as the Company
     within the meaning of section 414(b) of the Code, or any trade or
     business which is under common control with the Company within the
     meaning of section 414(c) of the Code.

               "EVENT OF DEFAULT" shall mean any of the events specified in
     paragraph 7A, provided that there has been satisfied any requirement
     in connection with such event for the giving of notice, or the lapse
     of time, or both, or the happening of any further condition, event or
     act, and "DEFAULT" shall mean any of such events, whether or not any
     such requirement has been satisfied.

               "EXCHANGE ACT" shall mean the Securities Exchange Act of
     1934, as amended.

               "EXCHANGE NOTES" shall have the meaning specified in the
     Preliminary Statement. 

               "EXISTING CLASS B COMMON" shall have the meaning specified
     in the Preliminary Statement.

               "EXISTING CLASS C COMMON" shall have the meaning specified
     in the Preliminary Statement.

               "EXISTING COMMON" shall have the meaning specified in the
     Preliminary Statement.

               "EXISTING NOTES" shall have the meaning specified in the
     Preliminary Statement.

               "EXISTING PURCHASE AGREEMENT" shall have the meaning
     specified in the Preliminary Statement.


























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               "EXISTING SENIOR PREFERRED" shall have the meaning specified
     in the Preliminary Statement.

               "FUNDED DEBT" shall mean, with respect to any Person, all
     Indebtedness of such Person which by its terms or by the terms of any
     instrument or agreement relating thereto matures, or which is
     otherwise payable or unpaid, more than one year from, or is directly
     or indirectly renewable or extendible at the option of the debtor to a
     date more than one year (including an option of the debtor under a
     revolving credit or similar agreement obligating the lender or lenders
     to extend credit over a period of more than one year) from, the date
     of the creation thereof.

               "GAS SYSTEMS" shall mean Hadson Gas Systems, Inc., an
     Oklahoma corporation.

               "GUARANTEE" shall mean, with respect to any Person, any
     direct or indirect liability, contingent or otherwise, of such Person
     with respect to any indebtedness, lease, dividend or other obligation
     of another, including, without limitation, any such obligation
     directly or indirectly guaranteed, endorsed (otherwise than for
     collection or deposit in the ordinary course of business) or
     discounted or sold with recourse by such Person, or in respect of
     which such Person is otherwise directly or indirectly liable,
     including, without limitation, any such obligation in effect
     guaranteed by such Person through any agreement (contingent or
     otherwise) to purchase, repurchase or otherwise acquire such
     obligation or any security therefor, or to provide funds for the
     payment or discharge of such obligation (whether in the form of loans,
     advances, stock purchases, capital contributions or otherwise), or to
     maintain the solvency or any balance sheet or other financial
     condition of the obligor of such obligation, or to make payment for
     any products, materials or supplies or for any transportation or
     services regardless of the non-delivery or non-furnishing thereof, in
     any such case if the purpose or intent of such agreement is to provide
     assurance that such obligation will be paid or discharged, or that any
     agreements relating thereto will be complied with, or that the

























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     holders of such obligation will be protected against loss in respect
     thereof.  The amount of any Guarantee shall be equal to the
     outstanding principal amount of the obligation guaranteed or such
     lesser amount to which the maximum exposure of the guarantor shall
     have been specifically limited.

               "HADSON DEFENSE SECURITY AGREEMENT" shall mean the Security
     Agreement, dated as of December 14, 1993 by and between Hadson Defense
     Systems, Inc., a Delaware corporation, and the Collateral Agent.

               "HADSON SECURITY AGREEMENT" shall mean the Security
     Agreement dated as of December 14, 1993, by and between the Company
     and the Collateral Agent.

               "HD ENERGY PLEDGE AGREEMENT" shall mean the Pledge
     Agreement, dated as of December 14, 1993 by and between HD Energy and
     the Collateral Agent.

               "HEPSI" shall mean Hadson Energy Products and Services,
     Inc., an Oklahoma corporation.

               "HEPSI MERGER" shall mean the merger of HEPSI with and into
     the Company on the Effective Date pursuant to Section 253 of the
     Delaware General Corporation Law.

               "INDEBTEDNESS" shall mean, with respect to any Person,
     without duplication, (i) all items (excluding items of contingency
     reserves or of reserves for deferred income taxes) which in accordance
     with generally accepted accounting principles would be included in
     determining total liabilities as shown on the liability side of a
     balance sheet of such Person as of the date on which Indebtedness is
     to be determined, excluding trade payables incurred in the ordinary
     course of business on normal trade terms and which constitute current
     liabilities, (ii) all indebtedness secured by any Lien on any property
     or asset owned or held by such Person subject thereto, whether or not
     the indebtedness secured thereby shall have been assumed, and (iii)


























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     all indebtedness of others with respect to which such Person has
     become liable by way of a Guarantee.

               "INDEMNIFIED PARTY" shall have the meaning specified in
     paragraph 12B.

               "INTERCOMPANY NOTES" shall mean and include any and all
     debts, obligations and liabilities of the Company to any of its
     Subsidiaries evidenced by a promissory note originally or currently
     held or to be held by any Subsidiary.

               "INTERCREDITOR AGREEMENT" shall mean the Intercreditor
     Agreement, dated as of the Effective Date, among the Purchasers, BMO
     and the Collateral Agent, in substantially the form of Exhibit D
     hereto.

               "LIEN" shall mean any mortgage, pledge, priority, security
     interest, encumbrance, contractual deposit arrangement, lien
     (statutory or otherwise) or charge of any kind (including any
     agreement to give any of the foregoing, any conditional sale or other
     title retention agreement, any lease in the nature thereof, and the
     filing of or agreement to give any financing statement under the
     Uniform Commercial Code of any jurisdiction) or any other type of
     preferential arrangement for the purpose, or having the effect, of
     protecting a creditor against loss or securing the payment or
     performance of an obligation, it being understood that a covenant not
     to create a Lien on any asset shall not be considered a "Lien" on such
     asset.

               "LLANO" shall mean Llano, Inc., a New Mexico corporation.

               "MARGIN STOCK" shall have the meaning specified in paragraph
     8I.

               "MATERIAL ADVERSE EFFECT" shall mean a material adverse
     effect on (i) the business, assets, operations, prospects or financial
     or other condition of the Company and its Subsidiaries

























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     taken as a whole, (ii) the ability of the Company to pay the
     obligations, or to perform its obligations under this Agreement, (iii)
     the legality, validity or enforceability of this Agreement, the
     Registration Rights Agreement, the Notes or any Collateral Document
     or, (iv) the rights and remedies of the Purchasers under this
     Agreement or any Collateral Document.

               "MERGER" shall have the meaning specified in the Preliminary
     Statement.

               "MERGER AGREEMENT" shall have the meaning specified in the
     Preliminary Statement.

               "MERGER NOTES" shall have the meaning specified in the
     Preliminary Statement. 

               "MULTIEMPLOYER PLAN" shall mean any Plan which is a
     "multiemployer plan" (as such term is defined in section 4001(a)(3) of
     ERISA).

               "NET WORTH" shall mean, as of any date of determination
     thereof, the common and preferred shareholders' equity of the Company
     at such date as determined in accordance with generally accepted
     accounting principles.

               "NEW JUNIOR PREFERRED STOCK" shall mean the Company's Junior
     Exercisable Automatically Convertible Preferred Stock, Series B, par
     value $.01 per share, to have the rights set forth in the New Restated
     Certificate of Incorporation.

               "NEW RESTATED CERTIFICATE OF INCORPORATION" shall have the
     meaning specified in paragraph 1.

               "NEW COMMON" shall mean the Company's new common stock, par
     value $.01 per share.

               "NOTES" shall have the meaning specified in paragraph 1.

























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               "NUHPI PLEDGE AGREEMENT" shall mean the Pledge Agreement
     dated as of December 14, 1993 by and between NuHPI, Inc., a Delaware
     corporation, and the Collateral Agent.

               "OFFICER'S CERTIFICATE" shall mean a certificate signed in
     the name of the Company by its Chief Executive Officer, President and
     Chief Operating Officer, Executive Vice President, Chief Financial
     Officer or Treasurer.

               "OLD JUNIOR PREFERRED" shall have the meaning specified in
     the Preliminary Statement.

               "OTHER SUBSIDIARY" shall mean a Wholly-Owned Subsidiary that
     is not a Subsidiary Borrower or a Pledged Subsidiary.

               "PBGC" shall mean the Pension Benefit Guaranty Corporation
     or any successor entity.

               "PERSON" shall mean and include an individual, a partner-
     ship, a joint venture, a corporation, a trust, a limited liability
     company, an unincorporated organization and a government or any
     department or agency thereof.

               "PIPELINE" shall have the meaning set forth in the
     preliminary statement.

               "PLAN" shall mean any "employee pension benefit plan" (as
     such term is defined in section 3 of ERISA) which is or has been
     established or maintained, or to which contributions are or have been
     made, by the Company, any of its Subsidiaries or, with respect to a
     Plan subject to Section 412 of the Code, any ERISA Affiliate.

               "PLEDGE AGREEMENT" shall mean the Pledge Agreement dated as
     of December 14, 1993 by and between the Company and the Collateral
     Agent.



























                                       62
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               "PLEDGED SUBSIDIARY" shall mean any Subsidiary the stock or
     assets of which is subject to a Lien in favor of the Collateral Agent.

               "PRESENT COLLATERAL DOCUMENTS" shall mean the Hadson
     Security Agreement, the Pledge Agreement, the Assignment and Security
     Agreement, the NuHPI Pledge Agreement, the HD Energy Pledge Agreement
     and the Hadson Defense Security Agreement.

               "PROXY STATEMENT - PROSPECTUS" shall mean the Company's
     Proxy Statement - Prospectus, dated November 10, 1993, distributed by
     the Company in connection with the Merger.

               "PRUDENTIAL" shall mean The Prudential Insurance Company of
     America and any of its affiliates.

               "PURCHASER SCHEDULE" shall have the meaning specified in the
     introductory sentence.

               "PURCHASERS" shall have the meaning specified in the
     introductory sentence.

               "REGISTRATION RIGHTS AGREEMENT" shall have the meaning
     specified in paragraph 3.

               "RELATED TRANSACTIONS" shall mean, collectively, the Merger,
     the HEPSI Merger and the Conversions.

               "REQUIRED HOLDER(S)" shall mean the holder or holders of at
     least 66 2/3% of the aggregate principal amount of the Notes from time
     to time outstanding.

               "RESPONSIBLE OFFICER" shall mean the chief executive
     officer, chief operating officer, chief financial officer or chief
     accounting officer of the Company or any other officer of the Company
     involved principally in its financial administration or its
     controllership function.


























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               "RESTRICTED PAYMENTS" shall have the meaning specified in
     paragraph 6B.

               "SECURITIES" shall have the meaning specified in
     paragraph 1.

               "SECURITIES ACT" shall mean the Securities Act of 1933, as
     amended.

               "SENIOR PREFERRED STOCK" shall mean the Company's Senior
     Cumulative Preferred Stock, Series A, par value $.01 per share, to
     have the rights set forth in the New Restated Certificate of
     Incorporation.

               "SENIOR SECURED NOTES" shall have the meaning specified in
     paragraph 1.

               "SFER" shall have the meaning specified in the Preliminary
     Statement.

               "SIGNIFICANT HOLDER" shall mean (i) each Purchaser, so long
     as such Purchaser shall hold (or be committed under this Agreement to
     purchase) any Note, or (ii) any other holder of at least 5% of the
     aggregate principal amount of the Notes from time to time outstanding.

               "SPECIAL OPTIONS" shall mean the options to purchase 100,000
     shares of the Existing Common granted to each of Harry G. Hadler, S.D.
     Wilks, C.B. and Walter C. Wilson in connection with the Merger.

               "SUBORDINATED DEBT" shall mean Debt subordinated in right of
     payment to any of the Notes.

               "SUBSIDIARY" shall mean any corporation organized under the
     laws of any state of the United States, Canada, or any province of
     Canada, which conducts the major portion of its business in and makes
     the major portion of its sales to Persons


























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     located in the United States or Canada, except directors' qualifying
     shares, at least a majority of the total combined voting power of all
     classes of Voting Stock of which shall, at the time as of which any
     determination is being made, be owned by the Company either directly
     or through Subsidiaries.

               "SUBSIDIARY BORROWERS" shall mean Gas Systems, United LP and
     Western Natural.

               "TOTAL CAPITAL" shall mean, as of any date of determination
     thereof, the sum of the following for the Company as determined in
     accordance with generally accepted accounting principles:  (i) common
     and preferred shareholders' equity at such date; and (ii) the
     outstanding principal amount of Funded Debt at such date (including
     any portion thereof which may be Current Debt at such date).

               "TRANSFEREE" shall mean any direct or indirect transferee of
     all or any part of any Note.

               "TRUST" shall mean the trust created pursuant to the Trust
     Agreement.

               "TRUST AGREEMENT" shall mean the Trust Agreement, dated as
     of the Effective Date, by and between the Company, the Trustee and the
     Purchasers, in substantially the form of Exhibit T.

               "TRUSTEE" shall mean Liberty Bank and Trust Company of
     Oklahoma City, N.A., in its capacity as trustee under the Trust
     Agreement.

               "UNITED LP" shall mean United LP Gas Corporation, an
     Oklahoma corporation.

               "VOTING AGREEMENT" shall mean a voting agreement, dated as
     of the Effective Date, among SFER, Pipeline and the Purchasers, in
                            -----
     substantially the form of Exhibit I.

























                                       65
<PAGE>

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               "VOTING STOCK" shall mean, with respect to any corporation,
     any shares of stock of such corporation whose holders are entitled
     under ordinary circumstances to vote for the election of directors of
     such corporation (irrespective of whether at the time stock of any
     other class or classes shall have or might have voting power by reason
     of the happening of any contingency).

               "WESTERN NATURAL" shall mean Western Natural Gas &
     Transportation Corp., a Colorado corporation.

               "WHOLLY-OWNED SUBSIDIARY" shall mean any corporation
     organized under the laws of any state of the United States, Canada, or
     any province of Canada, which conducts the major portion of its
     business in and makes the major portion of its sales to Persons
     located in the United States or Canada, and all of the stock of every
     class of which, except directors qualifying shares, is, and 100% of
     the total combined voting power of all classes of Voting Stock of
     which shall, at the time as of which any determination is being made,
     be owned by the Company either directly or through Wholly-Owned
     Subsidiaries.

          10B.  ACCOUNTING PRINCIPLES, TERMS AND DETERMINATIONS.  All
     references in this Agreement to "generally accepted accounting
     principles" shall be deemed to refer to generally accepted accounting
     principles in effect in the United States at the time of application
     thereof.  Unless otherwise specified herein, all accounting terms used
     herein shall be interpreted, all determinations with respect to
     accounting matters hereunder shall be made, and all unaudited
     financial statements and certificates and reports as to financial
     matters required to be furnished hereunder shall be prepared, in
     accordance with generally accepted accounting principles, applied on a
     basis consistent with the most recent audited consolidated financial
     statements of the Company and its Subsidiaries delivered pursuant to
     clause (iii) of paragraph 5A or, if no such statements have been so
     delivered, the most recent audited financial statements referred to in
     clause (i) of paragraph 8B.


























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          10C.  COMPUTATION OF TIME PERIODS.  In this Agreement in the
     computation of periods of time from a specified date to a later
     specified date, the word "from" means "from and including" and the
     words "to" and "until" each means "to but excluding."

          11.  JUDICIAL PROCEEDINGS.

          11A.  CONSENT TO JURISDICTION.  The Company irrevocably submits
     to the non-exclusive jurisdiction of any New York State or Federal
     court sitting in the City of New York over any suit, action or
     proceeding arising out of or relating to this Agreement or the Notes. 
     To the fullest extent it may effectively do so under applicable law,
     the Company irrevocably waives and agrees not to assert, by way of
     motion, as a defense or otherwise, any claim that it is not subject to
     the jurisdiction of any such court, any objection that it may now or
     hereafter have to the laying of the venue of any such suit, action or
     proceeding brought in any such court and any claim that any such suit,
     action or proceeding brought in any such court has been brought in an
     inconvenient forum.

          11B.  ENFORCEMENT OF JUDGMENTS.  The Company agrees, to the
     fullest extent it may effectively do so under applicable law, that a
     judgment in any suit, action or proceeding of the nature referred to
     in paragraph 11A brought in any such court shall be conclusive and
     binding upon the Company subject to rights of appeal, as the case may
     be, and may be enforced in the courts of the United States of America
     or the State of New York (or any other courts to the jurisdiction of
     which the Company is or may be subject) by a suit upon such judgment.

          11C.  SERVICE OF PROCESS.  The Company consents to process being
     served in any suit, action or proceeding of the nature referred to in
     paragraph 11A by mailing a copy thereof by registered or certified
     mail, postage prepaid, return receipt requested, to the address of the
     Company specified in or designated pursuant to paragraph 12I.  The
     Company agrees that such service (i) shall be deemed in every respect
     effective


























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     service of process upon it in any such suit, action or proceeding and
     (ii) shall, to the fullest extent permitted by law, be taken and held
     to be valid personal service upon and personal delivery to the
     Company.  Notices hereunder shall be conclusively presumed received as
     evidenced by a delivery receipt furnished by the United States Postal
     Service or any commercial delivery service.

          11D.  NO LIMITATION ON SERVICE OR SUIT.  Nothing in this
     paragraph 11 shall affect the right of the Purchasers to service
     process in any manner permitted by law, or limit any right that the
     holders of any of the Notes may have to bring proceedings against the
     Company in the courts of any jurisdiction or to enforce in any lawful
     manner a judgment obtained in one jurisdiction in any other
     jurisdiction.

          12.  MISCELLANEOUS.

          12A.  NOTE PAYMENTS.  The Company agrees that, so long as any
     Purchaser shall hold any Note, it will make payments of principal of,
     and interest on, such Note, which comply with the terms of this Agree-
     ment, by wire transfer of immediately available funds for credit (not
     later than 12:00 noon, New York City time, on the date due) to such
     Purchaser's account or accounts as specified in the Purchaser Schedule
     attached hereto, or such other account or accounts in the United
     States as such Purchaser may designate in writing, notwithstanding any
     contrary provision herein or in any Note with respect to the place of
     payment.  The Company agrees that, so long as any Purchaser shall hold
     any shares of Equity Securities, it will make dividend payments and
     other distributions on the shares of Equity Securities to the holders
     of record at the address appearing in the records of the Company in
     accordance with the New Restated Certificate of Incorporation.  Each
     Purchaser agrees that, before disposing of any Note, such Purchaser
     will make a notation thereon (or on a schedule attached thereto) of
     all principal payments previously made thereon and of the date to
     which interest thereon has been paid.  The Company agrees to afford
     the benefits of this paragraph 12A to any Transferee which shall have


























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     made the same agreement as each Purchaser has made in this paragraph
     12A.

          12B.  EXPENSES; INDEMNITY.  The Company agrees, whether or not
     the transactions contemplated hereby shall be consummated, to pay, and
     save each Purchaser and any Transferee harmless against liability for
     the payment of, all out-of-pocket expenses arising in connection with
     such transactions, including (i) all document production and duplica-
     tion charges and the fees and expenses of any special counsel engaged
     by such Purchaser or such Transferee in connection with this
     Agreement, the Securities being purchased hereunder or received by the
     Purchasers pursuant to the Merger Agreement, the Trust Agreement, the
     Voting Agreement, the Registration Rights Agreement, the Collateral
     Documents, the Related Transactions and the transactions contemplated
     hereby and thereby, including, without limitation, all such charges,
     fees and expenses for the period prior to the date hereof and any
     subsequent proposed modification hereof or thereof, or proposed
     consent hereunder or thereunder, whether or not such proposed
     modification shall be effected or proposed consent granted and (ii)
     the costs and expenses, including attorneys' fees, incurred by such
     Purchaser or such Transferee in enforcing (or determining whether or
     how to enforce) any rights hereunder or thereunder or in responding to
     any subpoena or other legal process or informal investigative demand
     issued in connection with this Agreement or the transactions contem-
     plated hereby or by reason of such Purchaser's or such Transferee's
     having acquired any Security including, without limitation, costs and
     expenses incurred in any bankruptcy case of the Company or any
     Subsidiary.  To the fullest extent permitted under applicable law, the
     Company agrees to indemnify and hold harmless each of the Purchasers
     and each of their affiliates and their respective directors, officers,
     employees, agents, advisors, attorneys and consultants (each an
     "INDEMNIFIED PARTY"), on an after-tax basis, from and against any and
     all losses, claims, actions, causes of action, suits, damages,
     liabilities, costs and expenses, including, without limitation, taxes
     (other than any income and franchise taxes except as set forth below),
     environmental liabilities, costs and


























                                       69
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     expenses and all fees and disbursements of counsel, which may be
     incurred by or awarded against any such Indemnified Party in
     connection with or arising out of, or by reason of the preparation of
     the defense of, any investigation, litigation or proceeding, whether
     or not any Indemnified Party is a party thereto, related to or in
     connection with this Agreement or any of the transactions contemplated
     hereby; provided, however, that the Company shall not be liable for
             --------  -------
     such indemnification to such Indemnified Party to the extent that any
     indemnified liabilities arise on account of such Indemnified Party's
     gross negligence or willful misconduct; provided, further, if and to
                                             --------  -------
     the extent such agreement to indemnify may be unenforceable for any
     reason whatsoever, the Company shall make the maximum contribution to
     the payment and satisfaction of each of the indemnified liabilities
     which shall be permissible under the applicable law.  In furtherance
     (and not in limitation) of the foregoing, the Company agrees to
     indemnify and hold harmless each of the Purchasers and each of their
     affiliates on an after-tax basis against any federal, state or local
     income tax liability incurred by any of them as a result of a
     determination by any federal, state or local taxing authority that the
     Notes issued by the Company to the Purchasers under this Agreement
     have original issue discount, as defined in section 1273 of the Code,
     or any provisions of state or local law having a similar purpose or
     effect.  For purposes of the two preceding sentences, an indemnity
     payment is made on an after-tax basis if the amount is such that,
     after the payment of any federal, state or local taxes payable on
     account of the receipt of such indemnity payment, the remainder of the
     indemnity payment is sufficient to pay all indemnified liabilities on
     account of which the indemnity payment is made.  If any federal, state
     or local taxing authority shall assert a claim for income taxes
     against any Purchaser or any of its affiliates that would be subject
     to indemnification hereunder, such Purchaser or such affiliate shall
     notify the Company in writing of such claim within 20 days after
     receipt of such claim, and shall take such action to contest such
     claim as the Company shall reasonably request from time to time,
     including appeals.  The failure of such Purchaser or such affiliate to
     give
























                                       70
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     timely notice of any such claim to the Company shall not pre-empt its
     right to indemnification hereunder unless such failure results in the
     Company's inability to contest any such claim.  The Company agrees to
     pay any Purchaser or any of its affiliates interest at the rate of
     interest publicly announced by Morgan Guaranty Trust Company of New
     York from time to time in New York as its Prime Rate commencing on the
     date any such tax liability subject to indemnification hereunder is
     paid by such Purchaser or such affiliate and ending on the date of the
     related indemnity payment by the Company.  The obligations of the
     Company under this paragraph 12B shall survive the transfers,
     redemption, exchange, purchase, conversion or other acquisition of any
     shares of Equity Securities or the transfer of any Note or portion
     thereof or interest therein by any Purchaser or any Transferee and the
     payment of any Note.

          12C.  CONSENT TO AMENDMENTS.  This Agreement may be amended, and
     the Company may take any action herein prohibited, or omit to perform
     any act herein required to be performed by it, if the Company shall
     obtain the written consent to such amendment, action or omission to
     act, of the Required Holder(s) except that, without the written
     consent of the holder or holders of all Notes at the time outstanding,
     no amendment to this Agreement shall change the maturity of any Note,
     or change the principal of, or the rate or time of payment of interest
     on, any Note, or affect the time, amount or allocation of any prepay-
     ments, or change the proportion of the principal amount of the Notes
     required with respect to any consent, amendment, waiver or
     declaration.  Each holder of any Note at the time or thereafter
     outstanding shall be bound by any consent authorized by this paragraph
     12C, whether or not such Note shall have been marked to indicate such
     consent, but any Notes issued thereafter may bear a notation referring
     to any such consent.  No course of dealing between the Company and the
     holder of any Note nor any delay in exercising any rights hereunder or
     under any Note shall operate as a waiver of any rights of any holder
     of such Note.  As used herein and in the Notes the term "this
     Agreement" and references thereto shall mean



























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     this Agreement as it may from time to time be amended, supplemented or
     otherwise modified.

          12D.  FORM, REGISTRATION, TRANSFER AND EXCHANGE OF NOTES; LOST
     NOTES.  The Notes are issuable as registered notes without coupons in
     denominations of at least $100,000, except as may be necessary to
     reflect any principal amount not evenly divisible by $100,000.  The
     Company shall keep at its principal office a register in which the
     Company shall provide for the registration of Notes and of transfers
     of Notes.  Each Purchaser may sell, transfer, negotiate or assign to
     one or more Transferees all or a portion of the Notes held by it. 
     Upon surrender for registration of transfer of any Note at the
     principal office of the Company, the Company shall, at its expense,
     execute and deliver one or more new Notes of like tenor and of a like
     aggregate principal amount, registered in the name of such Transferee
     or Transferees.  At the option of the holder of any Note, such Note
     may be exchanged for other Notes of like tenor and of any authorized
     denominations, of a like aggregate principal amount, upon surrender of
     the Note to be exchanged at the principal office of the Company. 
     Whenever any Notes are so surrendered for exchange, the Company shall,
     at its expense, execute and deliver the Notes which the holder making
     the exchange is entitled to receive.  Every Note surrendered for
     registration of transfer or exchange shall be duly endorsed, or be
     accompanied by a written instrument of transfer duly executed, by the
     holder of such Note or such holder's attorney duly authorized in
     writing.  Any Note or Notes issued in exchange for any Note or upon
     transfer thereof shall carry the rights to unpaid interest and
     interest to accrue which were carried by the Note so exchanged or
     transferred, so that neither gain nor loss of interest shall result
     from any such transfer or exchange.  Upon receipt of written notice
     from the holder of any Note of the loss, theft, destruction or
     mutilation of such Note and, in the case of any such loss, theft or
     destruction, upon receipt of such holder's unsecured indemnity
     agreement, or in the case of any such mutilation upon surrender and
     cancellation of such Note, the Company will make and deliver



























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     to such holder a new Note, of like tenor, in lieu of the lost, stolen,
     destroyed or mutilated Note.

          12E.  PERSONS DEEMED OWNERS; PARTICIPATIONS.  Prior to due
     presentment for registration of transfer, the Company may treat the
     Person in whose name any Note is registered as the owner and holder of
     such Note for the purpose of receiving payment of principal of and
     interest on such Note and for all other purposes whatsoever, whether
     or not such Note shall be overdue, and the Company shall not be
     affected by notice to the contrary.  Subject to the preceding
     sentence, the holder of any Note may from time to time grant
     participations in such Note to any Person on such terms and conditions
     as may be determined by such holder in its sole and absolute
     discretion, provided that any such participation shall be in a
                 --------
     principal amount of at least $100,000.

          12F.  SURVIVAL OF REPRESENTATIONS AND WARRANTIES AND COVENANTS;
     ENTIRE AGREEMENT.  All representations and warranties contained herein
     or made in writing by or on behalf of the Company in connection
     herewith shall survive the execution and delivery of this Agreement
     and the Securities, the transfer by any Purchaser of any Securities or
     portion thereof or interest therein and the payment of any Note, and
     may be relied upon by any Transferee, regardless of any investigation
     made at any time by or on behalf of any Purchaser or any Transferee. 
     Subject to the preceding sentence, this Agreement, the Registration
     Rights Agreement, the Trust Agreement, the Securities (including the
     New Restated Certificate of Incorporation) and the Collateral
     Documents embody the entire agreement and understanding between the
     Purchasers and the Company and supersede all prior agreements and
     understandings relating to the subject matter hereof, including,
     without limitation, the Existing Purchase Agreement, which is hereby
     terminated in its entirety; provided, however, that notwithstanding
                                 --------  -------
     the above or anything to the contrary set forth in this Agreement, the
     Company's obligations under paragraph 12B of the Existing Purchase
     Agreement shall survive the Closing hereunder and shall not be
     terminated hereby.
























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<PAGE>

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          12G.  SUCCESSORS AND ASSIGNS.  All covenants and other agreements
     in this Agreement contained by or on behalf of any of the parties
     hereto shall bind and inure to the benefit of the respective
     successors and assigns of the parties hereto (including, without
     limitation, any Transferee) whether so expressed or not.

          12H.  DISCLOSURE TO OTHER PERSONS.  The Company acknowledges that
     the holder of any Note may deliver copies of any financial statements
     and other documents delivered to such holder, and disclose any other
     information disclosed to such holder, by or on behalf of the Company
     or any Subsidiary in connection with or pursuant to this Agreement to
     (i) such holder's directors, officers, employees, agents and
     professional consultants, (ii) any other holder of any Note or Equity
     Securities, (iii) any Person to which such holder offers to sell such
     Note or Equity Securities or any part thereof, (iv) any Person to
     which such holder sells or offers to sell a participation in all or
     any part of such Note or Equity Securities, (v) any Person from which
     such holder offers to purchase any security of the Company, (vi) any
     federal or state regulatory authority having jurisdiction over such
     holder, (vii) the National Association of Insurance Commissioners or
     any similar organization or (viii) any other Person to which such
     delivery or disclosure may be necessary or appropriate (a) in
     compliance with any law, rule, regulation or order applicable to such
     holder, (b) in response to any subpoena or other legal process or
     informal investigative demand or (c) in connection with any litigation
     to which such holder is a party.

          12I.  NOTICES.  All notices or other communications provided for
     hereunder (except for the telephonic notice required by paragraph 4C)
     shall be in writing and sent by first class mail or nationwide
     overnight delivery service (with charges prepaid) and (i) if to any
     Purchaser, addressed to such Purchaser at the address specified for
     such communications in the Purchaser Schedule attached hereto, or at
     such other address as such Purchaser shall have specified to the
     Company in writing, (ii) if to any other holder of any Note, addressed
     to such other holder


























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     at such address as such other holder shall have specified to the
     Company in writing or, if any such other holder shall not have so
     specified an address to the Company, then addressed to such other
     holder in care of the last holder of such Note which shall have so
     specified an address to the Company, and (iii) if to the Company,
     addressed to it at 101 Park Avenue, Suite 1400, Oklahoma City,
     Oklahoma  73102, Attention:  President, or at such other address as
     the Company shall have specified to the holder of each Note in
     writing; provided, however, that any such communication to the Company
              --------  -------
     may also, at the option of the holder of any Note, be delivered by any
     other means either to the Company at its address specified above or to
     any officer of the Company.

          12J.  PAYMENTS DUE ON NON-BUSINESS DAYS.  Anything in this
     Agreement or the Notes to the contrary notwithstanding, any payment of
     principal of or interest on any Note that is due on a date other than
     a Business Day shall be made on the next succeeding Business Day.  If
     the date for any payment is extended to the next succeeding Business
     Day by reason of the preceding sentence, the period of such extension
     shall be included in the computation of the interest payable on such
     Business Day.

          12K.  SATISFACTION REQUIREMENT.  If any agreement, certificate or
     other writing, or any action taken or to be taken, is by the terms of
     this Agreement required to be satisfactory to any Purchaser or to the
     Required Holder(s), the determination of such satisfaction shall be
     made by such Purchaser or the Required Holder(s), as the case may be,
     in the sole and exclusive judgment (exercised in good faith) of the
     Person or Persons making such determination.

          12L.  GOVERNING LAW.  THIS AGREEMENT SHALL BE CONSTRUED AND
     ENFORCED IN ACCORDANCE WITH, AND THE RIGHTS OF THE PARTIES SHALL BE
     GOVERNED BY, THE LAW OF THE STATE OF NEW YORK, WITHOUT REGARD TO THE
     PRINCIPLES THEREOF REGARDING CONFLICT OF LAWS.

          12M.  SEVERABILITY.  Any provision of this Agreement which is
     prohibited or unenforceable in any jurisdiction shall, as to
























                                       75
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     such jurisdiction, be ineffective to the extent of such prohibition or
     unenforceability without invalidating the remaining provisions hereof,
     and any such prohibition or unenforceability in any jurisdiction shall
     not invalidate or render unenforceable such provision in any other
     jurisdiction.

          12N.  DESCRIPTIVE HEADINGS.  The descriptive headings of the
     several paragraphs of this Agreement are inserted for convenience only
     and do not constitute a part of this Agreement.

          12O.  COUNTERPARTS.  This Agreement may be executed in any number
     of counterparts, each of which shall be an original but all of which
     together shall constitute one instrument.

          12P.  SEVERALTY OF OBLIGATIONS.  The exchanges of the Exchange
     Notes hereunder are to be several transactions, and the obligations of
     the Purchasers under this Agreement are several obligations.  No
     failure by any Purchaser to perform its obligations under this
     Agreement shall relieve any other Purchaser or the Company of any of
     its obligations hereunder, and no Purchaser shall be responsible for
     the obligations of, or any action taken or omitted by, any other
     Purchaser hereunder.








































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          If you are in agreement with the foregoing, please sign the form
     of acceptance on the enclosed counterparts of this letter and return
     the same to the Company, whereupon this letter shall become a binding
     agreement among the Company and the Purchasers.

                                   Very truly yours,

                                   HADSON CORPORATION

                                   By________________________
                                      Title:

     The foregoing Agreement is
     hereby accepted as of the
     date first above written.

     THE PRUDENTIAL INSURANCE COMPANY OF AMERICA

     By_________________________
          Vice President

     PRUCO LIFE INSURANCE COMPANY

     By__________________________
          Vice President

     PRUSUPPLY, INC.

     By_________________________
          Vice President
































                                       77
<PAGE>

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                                                                  EXHIBIT A
                                                                  ---------


                           FORM OF SENIOR SECURED NOTE

          THIS NOTE HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF
          1933 AND MAY NOT BE SOLD OR TRANSFERRED IN THE ABSENCE OF SUCH
          REGISTRATION EXCEPT PURSUANT TO AN EXEMPTION THEREFROM UNDER SUCH
          ACT.

                               HADSON CORPORATION

                         8% SENIOR SECURED NOTE DUE 2003


     No. __                       New York, NY, December __, 1993
     $___________

               FOR VALUE RECEIVED, the undersigned, HADSON CORPORATION, a
     corporation organized and existing under the laws of the State of
     Delaware (herein called the "Company"), hereby promises to pay to
     _________________________________, or its registered assigns, the
     principal sum of _____________________________ DOLLARS
     ($_____________) on December 31, 2003, with interest (computed on the
     basis of a 360-day year -- 30-day month) (a) on the unpaid balance
     thereof at the rate of 8% per annum from the date hereof, payable
     quarterly on the last day of March, June, September and December in
     each year, commencing with the March 31, June 30, September 30 and
     December 31 next succeeding the date hereof, until the principal
     hereof shall have become due and payable and (b) on any overdue
     payment (including any overdue prepayment) of principal, and any
     overdue payment of interest, payable quarterly as aforesaid (or, at
     the option of the registered holder hereof, on demand), at a rate per
     annum from time to time equal to the greater of (i) 10% and (ii) 2%
     over the rate of interest publicly announced by Morgan Guaranty Trust
     Company of New York from time to time as its Prime Rate effective as
     of the effective date of the change of each Prime Rate.


























                                       A-1
<PAGE>

<PAGE>




     

               Payments of principal and interest on this Note are to be
     made at the main office of Morgan Guaranty Trust Company of New York
     in New York City or at such other place as the holder hereof shall
     designate to the Company in writing, in lawful money of the United
     States of America.

               This Note is one of the Senior Secured Notes issued pursuant
     to the Securities Purchase Agreement, dated as of December  , 1993
                                                               --
     (the "Agreement"), among the Company and the purchasers of the Senior
     Secured Notes listed on the Purchaser Schedule attached thereto, and
     is entitled to the benefits thereof.  Capitalized terms used herein
     not otherwise defined shall have the meanings ascribed to them in the
     Agreement.

               The Company agrees to make required prepayments of principal
     on the dates and in the amounts specified in the Agreement.  This Note
     is also subject to optional prepayment, in whole or from time to time
     in part, on the terms specified in the Agreement.

               The repayment of the principal and interest on this Note is
     secured as provided in the Collateral Documents.  Reference is hereby
     made to the Collateral Documents for a description of the property and
     assets in which a security interest has been granted, the nature and
     extent of the security, the terms and conditions upon which the
     security interest was granted and the rights of the holder of this
     Senior Secured Note in respect thereof.

               This Senior Secured Note is a registered Note and, in
     accordance with the terms of the Agreement, upon surrender of this
     Senior Secured Note for registration of transfer, duly endorsed, or
     accompanied by a written instrument of transfer duly executed, by the
     registered holder hereof or such holder's attorney duly authorized in
     writing, a new Senior Secured Note for a like principal amount will be
     issued to, and registered in



























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     the name of, the Transferee.  Prior to due presentment for
     registration of transfer, the Company may treat the person in whose
     name this Senior Secured Note is registered as the owner thereof for
     the purpose of receiving payment and for all other purposes, and the
     Company shall not be affected by any notice to the contrary.

               If an Event of Default shall occur and be continuing, the
     principal of this Senior Secured Note may be declared or otherwise
     become due and payable in the manner and with the effect provided in
     the Agreement.

               THIS SENIOR SECURED NOTE IS INTENDED TO BE PERFORMED IN THE
     STATE OF NEW YORK AND SHALL BE CONSTRUED AND ENFORCED IN ACCORDANCE
     WITH THE LAWS OF NEW YORK, WITHOUT REGARD TO THE PRINCIPLES THEREOF
     REGARDING CONFLICT OF LAWS.

                                   HADSON CORPORATION


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







































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