AGREEMENT AMONG INITIAL STOCKHOLDERS AND SYN INC.

               THIS AGREEMENT, dated May 17, 1995, is made and entered
     into among Empire Gas Corporation, a Missouri corporation
     ("Empire"), Northwestern Growth Corporation, a South Dakota
     corporation ("NGC"), and SYN Inc., a Delaware corporation
     ("SYN"), with respect to the following facts:

               A.   Empire currently is engaged in the business of
     distributing and selling at retail liquefied petroleum ("LP") gas
     and appliances, and has a management experienced in the operation
     of such business.

               B.   NGC is a wholly-owned subsidiary of Northwestern
     Public Service Company ("NWPS") and has as one of its objectives
     the making of investments that could benefit NWPS and its
     stockholders.

               C.   Empire and NGC, acting together, have made a
     successful bid to acquire the LP gas distribution and appliance
     business of Synergy Group Incorporated ("Synergy"; such
     acquisition being hereinafter called the "Synergy Acquisition"),
     in what is planned to be the first step in the proposed
     development by Empire and NGC, on a team basis, of a significant
     position in the LP gas distribution industry.  Empire and NGC
     have contemplated, in their bidding for the Synergy Acquisition,
     that they will rely principally on Empire for management
     expertise and on NGC to provide or arrange the financing for the
     Synergy Acquisition, and that the success of the Synergy
     Acquisition will depend in large measure upon the cost savings
     and operating improvements expected to be achieved by having
     Empire do the planning and management of the business of Synergy
     and its subsidiaries, under the direction of the Board of
     Directors of SYN.

               D.   Empire and NGC have caused SYN to be incorporated
     to serve as the vehicle (directly or through subsidiaries to be
     created) for making the Synergy Acquisition.

               E.   Empire and NGC, on behalf of SYN, are concluding
     the negotiation of the definitive agreement (the "Synergy
     Acquisition Agreement") for the Synergy Acquisition, and need to
     provide for (i) the initial capitalization of SYN, (ii) certain
     loan financing for SYN, (iii) the management of SYN and (iv) for
     certain matters pertaining to the ownership of shares of stock of
     SYN.

               NOW THEREFORE, in consideration of the premises and the
     agreements exchanged herein, the parties hereto agree as follows:

                 ARTICLE I:  INITIAL CAPITALIZATION OF SYN;
               STOCK SUBSCRIPTIONS AND RESERVATIONS OF STOCK

               SECTION 1.01  INITIAL AUTHORIZED STOCK OF SYN.  SYN has
     been incorporated by Empire and NGC with an initial authorized
     capitalization (as set forth in Article FOURTH of SYN's
     Certificate of Incorporation, a true and complete copy of which
     is attached hereto as Exhibit A), consisting of 100,000 shares of
     common stock, par value 1 CENT per share (the "Common Stock"); and
     the 100,000 shares of Common Stock referred to herein shall only
     be increased with the prior written agreement of Empire and NGC
     unless such increased number of shares is to be issued in an
     arm's length transaction to a party who is not affiliated with
     any of the parties to this Agreement), and 100,000 shares of
     preferred stock, par value 1 CENT per share, issuable in one or more
     series (the "Preferred Stock").  Prior to the consummation of the
     Synergy Acquisition, SYN shall, and Empire and NGC shall cause
     SYN to, take all action necessary to create and authorize the
     issuance of a series of the Preferred Stock, namely, the Series A
     Cumulative Preferred Stock, consisting of 70,500 shares, the
     terms of which shall be as set forth in Exhibit B attached
     hereto, with such changes therein as the parties hereto may
     approve before such series is created (the "Series A Preferred
     Stock").

               SECTION 1.02  SUBSCRIPTIONS AND OPTION FOR STOCK.  NGC
     has previously purchased, and hereby subscribes for, stock of
     SYN, and NGC has granted Empire an option to purchase certain
     shares of stock from NGC, as follows:

                    (a)  SYN and NGC acknowledge that NGC has
          purchased from SYN, and SYN has sold and issued to NGC,
          1,000 shares of Common Stock for a cash purchase price of
          $1,000.00 which has been paid by NGC to SYN, and that these
          shares are the only shares of stock of SYN that are
          currently outstanding.

                    (b)  NGC hereby subscribes for, and agrees to
          purchase from SYN, and SYN hereby agrees to sell and issue
          to NGC, an additional 71,500 shares of Common Stock for a
          cash purchase price of $71,500.00 to be paid at the time of
          such issuance, with this transaction to be consummated (the
          "Subscription Closing") at the First Closing, as defined in
          the Synergy Acquisition Agreement, unless an earlier time
          for the Subscription Closing is agreed to by the parties
          hereto.  The obligation of NGC under its subscription in
          this paragraph (b) is subject to the condition (unless
          waived by NGC) that NGC shall have been able to obtain the
          funds from the Permanent Financing or the Temporary
          Financing, as those terms are defined in the Synergy
          Acquisition Agreement, at or prior to the time of the
          Subscription Closing.

                    (c)  NGC hereby subscribes for, and agrees to
          purchase from SYN, and SYN hereby agrees to sell and issue
          to NGC, 68,000 shares of Series A Preferred Stock for a cash
          purchase price of $1,000 per share ($68,000,000.00 total),
          with this transaction to be consummated at the Subscription
          Closing.  The obligation of NGC under its subscription in
          this paragraph (c) is subject to the condition (unless
          waived by NGC) that NGC shall have been able to obtain the
          funds from the Permanent Financing or the Temporary
          Financing, as those terms are defined in the Synergy
          Acquisition Agreement, at or prior to the time of the
          Subscription Closing and that, at the time of the
          Subscription Closing, the First Closing (as defined in the
          Synergy Acquisition Agreement) is currently occurring or is
          reasonably assured of being consummated immediately
          thereafter.

                    (d)  Empire hereby subscribes for, and agrees to
          purchase from SYN, and SYN hereby agrees to issue and sell
          to Empire, 10,000 shares of Common Stock (which shall
          represent 10% of the issued and outstanding Common Stock)
          for a cash purchase price of $10,000 to be paid at the time
          of such issuance, with this transaction to be consummated at
          the Subscription Closing.  The obligation of Empire under
          its subscription in this paragraph (d) is subject to the
          condition (unless waived by Empire) that NGC consummates its
          purchase of shares of Common Stock under paragraph (b) above
          in this Section 1.02 at the Subscription Closing.

                    (e)  NGC hereby grants to Empire an option to
          purchase from NGC, at a price of $1.00 per share, up to
          20,000 of the shares of Common Stock which shall represent
          20% of the issued and outstanding Common Stock, subject to
          NGC acquiring such shares pursuant to paragraph (b) above in
          this Section 1.02.  Such option may be exercised at any time
          after September 30, 1995 and prior to September 30, 1997, or
          the Determination Date (as defined in Section 1.04 herein),
          whichever is earlier, by Empire's giving written notice of
          such exercise to NGC.  After the giving of such notice, NGC
          shall assign and deliver to Empire the shares of Common
          Stock for which the stock option was exercised, as promptly
          as possible, but in any event within seven days, in exchange
          for Empire's payment to NGC of the purchase price for such
          shares; and the shares so assigned and delivered shall then
          be shares owned by Empire and shall be held by Empire
          subject to the terms of this Agreement.

               SECTION 1.03  RESERVATIONS OF STOCK FOR ISSUANCE.  SYN
     shall, and Empire and NGC shall cause SYN to, take all action
     necessary to reserve for initial issuance, 17,500 shares of
     Common Stock and 2,500 shares of Series A Preferred Stock to be
     issued to the Stockholders (as defined in the Synergy Acquisition
     Agreement) at the Second Closing (also as defined in the Synergy
     Acquisition Agreement), pursuant to the Synergy Acquisition
     Agreement.

               SECTION 1.04  COMMON STOCK RETURN.  The following
     provisions of this Section 1.04 apply in the event Empire
     exercises the stock option granted to it in Section 1.02(d)
     herein:

                    (f)  The "Common Stock Return," as the term is
          used herein, shall be the number of shares of Common Stock
          of SYN which Empire hereby agrees to assign and deliver to
          NGC, without cost to NGC, in the event that the common
          equity value at a Determination Date (as defined below) is
          below levels specified for such date in subparagraph (iii)
          in this paragraph (a).  The Common Stock Return shall be set
          in accordance with the following formula:

                         (i)  The Determination Date shall be the date
               on which SYN is sold (meaning a sale of substantially
               all of the assets of SYN and its subsidiaries, the
               acquisition of SYN by another, non-affiliated entity by
               merger or consolidation, or the sale of partnership
               units or shares of stock or SYN which entitle the
               holder thereof to cast at least a majority of the votes
               entitled to be cast in the general election of
               directors of SYN or the date on which the sale of
               partnership units or shares of SYN's Common Stock is
               closed in an underwritten public offering, for which
               the partnership units or shares are registered under
               the Securities Act of 1933, or the date on which this
               Agreement expires or is terminated in accordance with
               Section 7.02 herein, whichever of the foregoing first
               occurs).

                         (ii) The value of the total outstanding
               Common Stock of SYN on the Determination Date (the
               "Value"), shall be determined by the parties hereto on
               the basis of the sale price for SYN if the sale of SYN
               is involved, or based upon the price to SYN (or the
               selling stockholders if SYN is not the seller) in the
               event an underwritten public offering of partnership
               units or Common Stock of SYN is involved, or on the
               basis of the fair market value of the outstanding
               Common Stock of SYN in every other event, as determined
               by an appraisal firm or an investment banking firm
               selected by the parties hereto, with such fair market
               value to be determined on the basis of the value of SYN
               and its subsidiaries as a whole, if sold as a going
               concern.  In the event there is a combination of one or
               more entities with SYN, the value of SYN will be
               determined by either (x) a fair market value appraisal
               or (y) in the event there is a public offering within
               nine months after such combination, the value shall be
               the initial price to the public of the SYN shares of
               Common Stock or partnership units in such public
               offering.

                         (iii)     For these purposes, "deemed
               outstanding shares of Common Stock" shall be the total
               of the number of shares of Common Stock issued and
               outstanding, plus the number that would be issued and
               outstanding if all outstanding stock options, warrants,
               conversion rights and other rights to acquire shares of
               Common Stock were exercised, whether or not exercisable
               at the time.  The number of shares of Common Stock of
               SYN constituting the Common Stock Return shall be the
               percentage of the deemed outstanding shares of Common
               Stock of SYN as of the Determination Date, determined
               on the basis of the following table and paragraph (b)
               below, if applicable:

          Column A            Column B                Column C

                        Percentage of deemed    Percentage of deemed
                            outstanding             outstanding
                       shares of Common Stock  shares of Common Stock
                               of SYN                  of SYN
                         shall be 0% if the     shall be 7.5% if the
       Fiscal Year of       Value as of             Value as of
        SYN in which   the Determination Date  the Determination Date
       Determination     is at least the         is less than the
        Date occurs:     following amount:       following amount:

            1996            $24,500,000             $22,250,000

            1997            $30,000,000             $24,750,000

            1998            $36,750,000             $27,500,000

            1999            $45,000,000             $30,600,000

            2000            $55,200,000             $34,000,000

         After 2000       1.225 times the         1.1125 times the
                       previous year's amount    previous year's amount


                    (g)  If the Value as of the Determination Date is
          more than the amount in Column C in Section 1.04(a)(iii)
          above, but less than the amount in Column B therein, the
          percentage used to determine the Common Stock Return shall
          be a figure between 7.5% and 0% which is in proportion to
          what the Value is to the amounts in the two columns for the
          particular Determination Date.

               SECTION 1.06  ACQUISITION FOR INVESTMENT.  Empire and
     NGC each represent and warrant to the other, and to SYN, as
     follows:  It has (through its management personnel) such
     knowledge and experience in financial and business matters that
     it is capable of evaluating the merits and risks of purchase of
     securities of SYN as provided for in this Agreement; it is
     acquiring such securities, and will acquire them, for investment
     and not with a view toward, or with any intention of,
     distributing or selling any of the securities and it will not
     sell or offer to sell or otherwise transfer any of the securities
     in violation of the Securities Act of 1933, as amended.

                    ARTICLE II:  LOAN FINANCING FOR SYN

               NGC shall make a commercially reasonable effort to
     arrange for SYN, or provide SYN with, loan financing for SYN, on
     a fully secured basis, of up to $70,000,000 principal amount
     needed by SYN for the Synergy Acquisition.

                ARTICLE III:  LIMIT TO FINANCING OBLIGATIONS

               Neither Empire nor NGC, nor any of their affiliates,
     shall have any obligation to provide, or arrange, financing for
     SYN other than as expressly provided for in Articles I and II
     herein.

                      ARTICLE IV:  SYNERGY ACQUISITION

               Each of the parties hereto will make a commercially
     reasonable effort in cooperation with the other parties hereto,
     to do those things within its control to consummate the Synergy
     Acquisition in accordance with the terms of, and subject to the
     conditions in, the Synergy Acquisition Agreement.  Nothing in
     this Agreement or otherwise shall be construed to give anyone who
     is not a party to this Agreement, whether under a third party
     beneficiary legal doctrine or otherwise, a right to enforce the
     provisions of this Article or to obtain relief for any failure to
     perform in accordance with the requirements of this Article.

                       ARTICLE V:  MANAGEMENT OF SYN

               SECTION 5.01  At or before the first Closing (as
     defined in the Synergy Acquisition Agreement), the parties hereto
     will enter into a management agreement in substantially the form
     attached hereto as Exhibit C, or with such changes therein as the
     parties hereto hereafter agree upon (the "Management Agreement"),
     pursuant to which the planning and management of the business of
     SYN subsequent to the Second Closing (as defined in the Synergy
     Acquisition Agreement) will be conducted by Empire under the
     direction of the Board of Directors of SYN, as provided therein.

               SECTION 5.02  DIRECTORS AND OFFICERS OF SYN

                    (a)  For purposes of this Agreement, "Control
          Period" means the period of time commencing on the date of
          this Agreement and continuing either (i) until this
          Agreement is terminated pursuant to Section 7.02 herein
          because of the termination of the Synergy Acquisition
          Agreement without the Synergy Acquisition having been
          completed or (ii) until a time after the First Closing, as
          defined in the Synergy Acquisition Agreement, when (A) the
          Control Period is terminated by agreement of the parties
          hereto, (B) NGC no longer owns a majority of the shares of
          Common Stock of SYN deemed to be outstanding (determined as
          provided in Section 1.04 herein), (C) Empire no longer owns
          at least 20% of  the shares of Common Stock of SYN deemed to
          be outstanding or has an option to acquire at least that
          amount of shares, or (D) when SYN consummates an
          underwritten public offering of partnership units or shares
          of its Common Stock, registered under the Securities Act of
          1933, whichever of (A), (B), (C) or (D) first occurs.

                    (b)  Throughout the Control Period, NGC and Empire
          shall vote their voting shares of stock of SYN that are
          capable of being voted, and will otherwise use their
          respective commercially reasonable efforts, to carry out the
          following:

                         (i)  the Board of Directors of SYN shall
               consist of five members, three of whom shall be
               nominees of NGC (the "NGC Positions") and two of whom
               shall be nominees of Empire (the "Empire Positions");
               and any vacancies occurring in the NGC Positions will
               be promptly filled with nominees of NGC and any
               vacancies occurring in the Empire Positions will be
               promptly filled with nominees of Empire.

                         (ii) The officers of SYN shall include at all
               times a Chairman of the Board and a Vice Chairman of
               the Board, who will be persons nominated by NGC, and a
               President and Chief Executive Officer, who will be Paul
               S. Lindsey, Jr., and a Secretary, who will be a person
               nominated by Empire.  The authority and duties of such
               officers shall be set forth in the by-laws of SYN, a
               true and complete copy of which as in effect on the
               date hereof is attached hereto as Exhibit D.

                    (c)  To initiate compliance with preceding
          paragraph (b), Empire and NGC  have caused the following
          person to be elected to the positions with SYN indicated by
          their names, to serve for the period provided in the by-laws
          of SYN:

                    *    Chairman of the Board and director -- Merle
                         D. Lewis (an NGC nominee for such positions);

                    *    Vice Chairman of the Board and director --
                         Richard R. Hylland (an NGC nominee for such
                         positions);

                    *    President and Chief Executive officer and
                         director -- Paul S. Lindsey, Jr. (an Empire
                         nominee as to the position of director);

                    *    Secretary and director -- Douglas A. Brown
                         (an Empire nominee for such positions);

          with the fifth member of the Board of Directors of SYN (one
          of the NGC Positions) to be nominated by NGC, and elected,
          at a future time when NGC has selected the nominee for such
          position.

           ARTICLE VI:  DISPOSITION OF SYN STOCK BY EMPIRE OR NGC

               SECTION 6.01  PERMITTED DISPOSITIONS.

                    (a)  NGC may at any time or from time to time
          transfer any of the securities issued by SYN which NGC may
          own at any time to NWPS or any wholly-owned subsidiary of
          NWPS, provided that notice of such transfer is given to the
          other parties to this Agreement and that the Transferee
          becomes a party to this Agreement with respect to the
          securities so transferred, by all of such transferees and
          NGC shall collectively act, and be treated, as a single
          entity with NGC acting as their representative for purposes
          of this Agreement.

                    (b)  Empire may at any time and from time to time
          transfer any of the securities issued by SYN which Empire
          may own at any time to any affiliated party, provided that
          notice of such transfer is given to the other parties to
          this Agreement and the transferee becomes a party to this
          Agreement with respect to the securities so transferred, but
          all such transferees and Empire shall collectively act, and
          be treated, as a single entity with Empire acting as their
          representative for purposes of this Agreement.

               SECTION 6.02  RIGHTS OF FIRST REFUSAL.

                    (c)  Except as permitted by Section 1.04 and
          Section 6.01(b) herein, so long as the Management Agreement
          is in effect, Empire will not sell or otherwise dispose of
          any shares of Common Stock of SYN, or any other securities
          convertible into such shares, to any party without first
          offering the same for sale to NGC in writing on the same
          terms as are offered to or by the other party (with full
          disclosure of such terms to NGC) and allowing not less than
          30 days after its receipt of the offer for NGC to accept the
          offer, and if such offer is accepted by NGC, NGC shall have
          90 days in which to complete the purchase on such terms.

                    (d)  Except as permitted by Section 1.02(e) and
          Section 6.01(a) herein, so long as the Management Agreement
          is in effect, NGC will not sell or otherwise dispose of any
          shares of Common Stock of SYN, or any other securities
          convertible into such shares, to any party without first
          offering the same for sale to Empire in writing on the same
          terms as are offered to or by the other party (with full
          disclosure of such terms to Empire) and allowing Empire not
          less than 30 days after its receipt of the offer for Empire
          to accept the offer, and if such offer is accepted by
          Empire, Empire shall have 90 days in which to complete the
          purchase on such terms, but if Empire declines such offer,
          then Empire shall have the right to participate on a pro
          rata basis in the sale of such shares by NGC.

                        ARTICLE VII:  MISCELLANEOUS

               SECTION 7.01  RESTRICTIVE LEGEND.  Each certificate
     issued by SYN to evidence shares of Common Stock, or securities
     convertible into such shares, owned by either Empire or NGC shall
     be endorsed with the following legend:

               "The shares represented by this certificate
               are subject to the Agreement among the
               Corporation and its Initial Stockholders,
               dated as of May 17, 1995, as the same may be
               amended, on file with the issuing Corporation
               at its principal business office and may be
               transferred or otherwise disposed of only in
               accordance therewith."

               SECTION 7.02  TERM OF THIS AGREEMENT.  This Agreement,
     if not sooner terminated by agreement of the parties hereto or
     pursuant to the next sentence, shall terminate when the Control
     Period terminates.  In the event the Synergy Acquisition
     Agreement is terminated without the Synergy Acquisition having
     been completed, the parties hereto will liquidate and dissolve
     SYN as promptly as possible when all obligations of SYN under, or
     with respect to, the Synergy Acquisition Agreement have been
     discharged or provided for, and this Agreement shall then
     automatically terminate.

               SECTION 7.03  NOTICES.  All notices and other
     communications hereunder shall be in writing and shall be deemed
     to have been given (a) when delivered in person, (b) one business
     day after deposit with a nationally recognized overnight courier
     service (c) two business days after being deposited in the United
     States mail, postage prepaid, first class, registered or
     certified mail, or (d) the business day on which it is sent and
     received by facsimile, as follows:

                         (i)  If to SYN, to:

                                   SYN Inc.
                                   c/o Northwestern Growth Corporation
                                   33 Third Street, S.E.
                                   Huron, South Dakota  57350
                                   Fax No. (605) 353-8286

                                   Attention:  Richard R. Hylland, President

                              with a copy to Empire, addressed and
                              sent to it at the place required under
                              this Agreement for giving notice to
                              Empire

                         (ii) If to Empire, to:

                                   Empire Gas Corporation
                                   P.O. Box 303
                                   1700 South Jefferson
                                   Lebanon, Missouri  65536
                                   Fax No.  (417)  532-8529

                                   Attention:  Paul S. Lindsey, Jr., President

                         (iii)     If to NGC, to:

                                   Northwestern Growth Corporation
                                   33 Third Street, S.E.
                                   Huron, South Dakota 57350
                                   Fax No. (605) 353-8286

                                   Attention:  Richard R. Hylland, President

               SECTION 7.04 SECTION 351 OF THE CODE.  Each of the
     parties hereto agrees to comply with the requirements of Section
     6.28 of the Synergy Acquisition Agreement, both with respect to
     the transaction referred to therein and with respect to any
     transaction under this Agreement to the extent necessary to
     assure the result under Section 351 of the Internal Revenue Code
     of 1986, as amended, for the transaction referred to in such
     Section 6.28.

               SECTION 7.05  CAPTIONS.  The captions in this Agreement
     are included for convenience of reference only and shall be
     ignored in the construction and interpretation of this Agreement.

               SECTION 7.06 GOVERNING LAW.  This Agreement shall be
     construed in accordance with and governed by the internal laws of
     the State of Delaware without regard to the choice of law
     principles thereof.

               SECTION 7.07  COUNTERPARTS.  Execution of separate
     copies of this Agreement by each or some of the several parties
     hereto shall have the same force and effect as though all such
     parties had executed the original of this Agreement.  Further,
     the parties hereto may execute several counterparts of this
     Agreement, all of which shall constitute but one and the same
     agreement.


               IN WITNESS WHEREOF, each of the parties hereto have
     caused this Agreement to be executed in its name as of the date
     first above written.

                                   EMPIRE GAS CORPORATION

                                   By  /s/ Paul S. Lindsey, Jr.       
                                       __________________________
                                        President

                                   NORTHWESTERN GROWTH CORPORATION

                                   By /s/ Richard R. Hylland         
                                      _____________________________
                                        President

                                   SYN INC.

                                   By /s/ Paul S. Lindsey, Jr.        
                                      ______________________________
                                   Title: