Exhibit 2.1














                        ASSET PURCHASE AND SALE AGREEMENT

                                 BY AND BETWEEN

                  DIVERSIFIED ENERGY CO. d/b/a HIGHLAND ENERGY

                                       AND

                           ATMOS ENERGY MARKETING, LLC











                        ASSET PURCHASE AND SALE AGREEMENT

                                 BY AND BETWEEN

                  DIVERSIFIED ENERGY CO. d/b/a HIGHLAND ENERGY
                                       AND

                           ATMOS ENERGY MARKETING, LLC


         This Agreement is entered effective as of the 10th day of July, 2006
between Atmos Energy Marketing, LLC ("AEM") and Diversified Energy Company d/b/a
Highland Energy ("Highland"). This Agreement sets forth the terms and conditions
under which Highland will transfer for value to AEM all rights and
responsibilities under certain natural gas purchase and sales and related
agreements. In consideration of the mutual understandings and covenants
contained in this Agreement and for other good and valuable consideration, the
receipt and sufficiency of which is hereby acknowledged, the Parties agree as
follows:

1.       DEFINITIONS.

         Generally, words used in this Agreement shall be given their ordinary
meanings in common usage in the English language. The singular and plural shall
be regarded as interchangeable. All words are intended to be gender neutral. The
following capitalized terms when used in this Agreement are intended to have the
specialized meanings described below:

         (a)      "Acquired Assets" shall consist of the Assigned Contracts and
                  the related items described in Section 2.3.

         (b)      "Agreement" shall mean this Asset Purchase and Sale Agreement
                  together with all Exhibits and Attachments. Any reference to a
                  section, sub-part, exhibit, attachment or paragraph shall
                  refer to this Agreement unless the context clearly requires a
                  different interpretation.

         (c)      "Assigned Contracts" shall mean the natural gas purchase and
                  sale agreements between Highland and various customers,
                  described in Section 2.1 and itemized on Exhibit A.

         (d)      "Closing" shall have the meaning ascribed in Article 7.

         (e)      "Highland" shall mean Diversified Energy Company d/b/a
                  Highland Energy.


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         (f)      "Date of Transfer" shall mean the time of assignment of the
                  Assigned Contracts as measured from the first meter read
                  performed for each of the end user customers with Assigned
                  Contracts on or after August 1, 2006.

         (g)      "Parties" shall refer to Highland and AEM. The term "Party"
                  shall refer to either Highland or AEM, as context requires.

         (h)      "Purchase Price" shall mean the consideration, as adjusted,
                  paid for the Acquired Assets pursuant to Section 5.2.

         (i)      "Proprietary Information" shall have the meaning ascribed in
                  Section 11.8(a).

         (j)      "Responsibilities" shall have the meaning ascribed in Section
                  4.3.

         (k)      "AEM" shall mean Atmos Energy Marketing, LLC

2.       SUBJECT MATTER OF TRANSFER:  ACQUIRED ASSETS.

         2.1      Assignment of Agreement. Effective on the Date of Transfer,
                  Highland shall sell, deliver and assign to AEM and AEM shall
                  purchase, accept and assume all rights and responsibilities
                  under each of the natural gas purchase and sales agreements
                  listed on Exhibit A ("Assigned Contracts"); provided however,
                  that AEM will not be obliged to accept the transfer of any
                  customer which does not consent to assignment. Highland shall
                  use its best efforts to obtain the consent to assignment of
                  each of the Assigned Contracts listed on Exhibit A, and, in
                  accordance with Section 9.1 below, AEM will cooperate fully
                  with Highland in supporting Highland's efforts to obtain such
                  consents. In the event that AEM does not accept any transfer
                  then, notwithstanding any provision in this agreement to the
                  contrary, Highland shall have the unrestricted right to
                  continue to provide any and all services to such customer,
                  whether under the applicable contract or any other contract
                  entered into with such customer in the future.

         2.2      Assignments and Assumptions. In furtherance of the assignment
                  described in Section 2.1:

                  (a)      Highland shall assign to AEM its rights and
                           responsibilities under all intrastate or interstate
                           pipeline transportation, guaranty or pooling
                           agreements, local distribution company transportation
                           agreements, and any associated agreements that are
                           necessary to facilitate delivery of natural gas to
                           end users subject of the Assigned Contracts; or, in
                           the alternative Highland will withdraw as agent from
                           such agreements immediately upon notice that AEM
                           has entered comparable agency agreements in its own
                           name;

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                  (b)      Highland and AEM shall terminate the existing
                           agreement under which Highland purchases natural gas
                           from AEM to service contracts which are the subject
                           of this Agreement, and for which AEM has accepted
                           assignment. For any contracts for which AEM does not
                           accept assignment any applicable natural gas purchase
                           agreements from AEM shall continue at Highland's sole
                           discretion.

         2.3      Related Acquired Assets. As evidence of this purchase and
                  sale, including the Highland interests in the Assigned
                  Contracts, Highland shall deliver to AEM a Conveyance,
                  Assignment and Bill of Sale in substantially the same form as
                  in Attachment 1. Highland shall also provide AEM with the
                  following:

                  (a)      all business and financial records in whatever form
                           or media within Highland's possession, relating to
                           the Assigned Contracts, including but not limited to
                           billing and collection history, available prior
                           contracts, and available prior correspondence;

                  (b)      any material copyrighted by Highland and used in
                           connection with the Assigned Contracts, if any; and

3.       EFFECTIVE DATE OF TRANSFER.

         3.1      The assignment and assumption of the Assigned Contracts shall
                  be effective at the time of the first meter read occurring
                  on or after August 1, 2006 for each of the Assigned Contracts.
                  Prior to such meter read, Highland shall provide all customer
                  services, assume all liabilities and be entitled to all
                  revenues and benefits for services through the Date of
                  Transfer under the Assigned Contracts. Commencing with such
                  meter read, and regardless of whether a consent to assignment
                  has been obtained for each Assigned Contract, AEM shall
                  provide all customer services, assume all liabilities,
                  and be entitled to all revenues and benefits for services on
                  and after the Date of Transfer under each of the Assigned
                  Contracts.

4.       PERFORMANCE RESPONSIBILITIES AND INDEMNIFICATION OF THE
         PARTIES.

         4.1      Highland's Responsibilities. Until the Date of Transfer,
                  Highland shall be responsible for all performance obligations
                  related to each of the Assigned Contracts. HIGHLAND SHALL
                  DEFEND, INDEMNIFY AND HOLD AEM HARMLESS FROM ANY TORT OR
                  CONTRACT LIABILITY, ANY REGULATORY PENALTIES AND ANY COSTS ,
                  INCLUDING, BUT NOT LIMITED TO, TRANSPORTATION, SUPPLY, OR
                  TAXES, IN CONNECTION WITH ANY OF THE ASSIGNED CONTRACTS, BUT
                  ONLY TO THE EXTENT ARISING OR OCCURRING BEFORE THE DATE OF

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                  TRANSFER, EVEN IF DEMAND FOR PAYMENT IS MADE SUBSEQUENT TO THE
                  DATE OF TRANSFER.

         4.2      AEM's Responsibilities.  At the Date of Transfer, AEM shall
                  assume responsibility for all performance obligations related
                  to each of the Assigned Contracts.  AEM SHALL DEFEND,
                  INDEMNIFY AND HOLD HIGHLAND HARMLESS FROM ANY TORT OR CONTRACT
                  LIABILITY, ANY REGULATORY PENALTIES AND ANY COSTS, INCLUDING,
                  BUT NOT LIMITED TO TRANSPORTATION, SUPPLY, OR TAXES, IN
                  CONNECTION WITH ANY OF THE ASSIGNED CONTRACTS COMMENCING ON
                  THE DATE OF TRANSFER.

5.       PURCHASE PRICE AND ACCOUNTS RECEIVABLE.

         5.1      AEM's Rights to Revenue from Assigned Contracts. AEM shall be
                  entitled to all revenues generated from the Assigned
                  Contracts, including revenues from contract extensions,
                  contract evergreen periods, and increased consumption and
                  facilities expansion, for services rendered by AEM commencing
                  on the Date of Transfer for periods beginning after the date
                  of transfer. In the event that any customer improperly tenders
                  payment to Highland for services rendered by AEM, Highland
                  shall immediately remit to AEM an amount equal to such
                  improperly received payment. The right to receive revenues
                  from all uncollected accounts receivable for the Assigned
                  Contracts for service rendered by Highland up to the Date of
                  Transfer, and such revenues, shall be solely the property of
                  Highland. In the event that any customer improperly tenders
                  payment to AEM for services rendered by Highland prior to the
                  date of transfer, AEM shall immediately remit to Highland an
                  amount equal to such improperly received payment.

         5.2      Payment of Purchase Price to Highland. The Purchase Price for
                  the Acquired Assets shall be $414,270, to be paid in the
                  following manner: AEM will pay Highland the sum of $233,216 in
                  immediately available funds at Closing. The remaining $181,054
                  will be paid by AEM to Highland on the first annual
                  anniversary of the Closing provided however that said amount
                  will be adjusted downward in the event that one or more
                  customers pursuant an Assigned Contract or Assigned Contracts
                  is no longer a customer on such anniversary date and such
                  customer was not a customer for two of the preceding twelve
                  months. Such adjustment will be made in the following manner:
                  the remaining $181,054 payment shall be reduced by the Price
                  Allocation Amount indicated in Exhibit B "Highland Energy
                  Customer Allocation" for each customer. In addition, if any
                  customer in Exhibit B has reduced their average natural gas
                  volumetric purchases by more than 20 percent, the remaining
                  $181,054 payment will be adjusted by the proportional decline
                  in volumetric purchases.


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         5.3      Wire Transfers.  Payments required to be made pursuant to this
                  Agreement shall be made by wire transfer on the day of
                  Closing, with transaction confirmation requested, as follows:

                  (a) if payment is to be made to Highland:

                           Customer Name:        Diversified Energy Company
                           Bank Name:            Wachovia Bank, NA
                           Bank Code:            ABA # 0514-0054-9
                           Customer Account Number:
                           Location:             Roanoke, Virginia

                  (b) if payment is to be made to AEM:

                           Customer Name:        Atmos Energy Marketing, L.L.C.
                           Bank Name:            Bank of America
                           Bank Code:            ABA #   111 000 012
                           Customer Account Number:

6.       TRANSITION PERIOD.

         6.1.     Highland Assistance to AEM. Highland shall make reasonable
                  efforts to provide for a period of thirty days from the date
                  of Closing, during normal business hours, at no cost to AEM
                  such general transition services as may be reasonably
                  necessary to transition the Acquired Assets to AEM's control.

         6.2      Industrial Marketing Representative. In addition to the
                  transition services described in Section 6.1 above, Highland
                  agrees to make its Industrial Marketing Representative
                  available to perform customer contact services as AEM may
                  reasonably require, for a period of two years from the date of
                  Closing. AEM agrees, in consideration of the provision of
                  customer contact services by Highland's Industrial Marketing
                  Representative during such two year period, to pay Highland
                  the sum of $48,000 in four equal installments of $12,000 each,
                  payable on the 6th month, 12th month, 18th month and 24th
                  month anniversaries of the date of Closing. In the event that
                  AEM determines that the services of such Industrial Marketing
                  Representative are not required for the full two year period,
                  AEM shall notify Highland in writing not less than ninety days
                  prior to the last day such services will be required, and the
                  amount of the $48,000 will be prorated for the period of time
                  such services were provided prior to such date, with credit
                  given for prior installments. The parties agree that the
                  services of Highland's Industrial Marketing representative are
                  not expected to exceed one quarter of the representative's
                  work time.


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7.       CLOSING.

         7.1      Closing Date. The Closing of the transactions contemplated by
                  this Agreement shall take place at AEM's offices in Franklin,
                  Tennessee or such other location as deemed mutually convenient
                  by the Parties on July 25, 2006.

         7.2       Deliveries by Highland at Closing.  At Closing Highland will
                   deliver to AEM:

                  (a)      all Assigned Contracts, including any amendments, as
                           described in Exhibit A, along with evidence of
                           consent to assign;

                  (b)      the most recent available customer contact list and
                           all Highland records described in Section 2.3(a);

                  (c)      Evidence of confirmation of the wire transfer payment
                           described in Section 5.3, if applicable.

         7.3      Deliveries by AEM at Closing.  No later than the next business
                  day following the day of Closing, AEM will deliver to
                  Highland:

                  (a)      evidence of confirmation of the wire transfer payment
                           described in Section 5.3, if applicable.

         7.4      Mutual Deliveries at Closing.  At Closing the Parties shall
                  deliver to one another (as appropriate) executed duplicate
                  originals of:

                  (a)      This Agreement;

                  (b)      Conveyance, Assignment and Bill of Sale; and

                  (c)      Such other documents as either Party may reasonably
                           request, consistent with the terms of this Agreement,
                           at least five days prior to Closing.

         7.5      AEM's Conditions to Closing. AEM's obligation to complete the
                  transactions contemplated by this Agreement shall be subject
                  to fulfillment of the following conditions:

                  (a)      All representations and warranties made by Highland
                           shall be true, current and correct in all material
                           respects as of the date of Closing;

                  (b)      Highland shall have complied in all material respects
                           with all terms, covenants and conditions of this
                           Agreement as of the date of Closing;


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                  (c)      No legal action or administrative proceeding is
                           pending against Highland which would prevent the
                           consummation of the transactions contemplated by this
                           Agreement; and

                  (d)      All documents required to be delivered to AEM
                           pursuant to this Article 7 have been delivered.

         7.6      Highland's Conditions to Closing.  Highland's obligation to
                  consummate the transactions contemplated by this Agreement
                  shall be subject to fulfillment of the following conditions:

                  (a)      All representations and warranties made by AEM shall
                           be true, current and correct in all material respects
                           as of the date of Closing;

                  (b)      AEM shall have complied in all material respects with
                           all the terms, conditions and covenants of this
                           Agreement, including payment obligations, as of the
                           date of Closing;

                  (c)      No legal action is pending against AEM which would
                           prevent the consummation of the transactions
                           contemplated by this Agreement; and

                  (d)      All documents required to be delivered to Highland
                           pursuant to this Article 7 have been delivered.

8.  REPRESENTATIONS AND WARRANTIES.

         8.1      Representations of Highland. Highland represents and warrants
                  to AEM that the following statements shall be true, current
                  and correct as of the date of Closing:

                  (a)      Corporate Existence and Powers. Highland is a
                           corporation organized and in good standing under the
                           laws of the Commonwealth of Virginia. Highland has
                           all requisite authority to enter into the
                           transactions contemplated by this Agreement.

                  (b)      Validity and Enforceability. This Agreement has been
                           duly executed and delivered by Highland and
                           constitutes the binding obligation of Highland
                           enforceable against Highland in accordance with its
                           terms, except as such enforceability may be limited
                           by bankruptcy, insolvency, reorganization or such
                           other laws of general application relating to the
                           rights and remedies of creditors, or by general
                           principles of equity, including the availability of
                           specific performance.


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                  (c)      Assigned Contracts.  Highland has delivered to AEM
                           originals or copies of each of the Assigned
                           Contracts, all of which remain in full force and
                           effect.  Each of the Assigned Contracts constitutes
                           a valid, genuine and legally enforceable obligation,
                           in accordance with its terms.  Neither Highland, nor
                           to the best of its knowledge, any other party is in
                           default under any of the Assigned Contracts (except
                           for late payments by customers) and no event has
                           occurred which (with passage of time and giving of
                           notice) would constitute a default under any of the
                           Assigned Contracts.  No counterparty to any of the
                           Assigned Contracts has prepaid any of its
                           obligations, and none, to Highland's actual
                           knowledge, has any valid defenses, counterclaims,
                           rights of set off or other similar rights respecting
                           the performance of its obligations under any of the
                           Assigned Contracts.

                  (d)      No Pending Disputes. There are no customer disputes
                           or claims litigation proceedings or governmental
                           investigations, other than those already disclosed in
                           writing to AEM, pending or known by Highland to be
                           threatened against Highland's interest in any of the
                           Assigned Contracts.

                  (e)      Consents and Approvals. No consent, approval or
                           authorization of or registration with any third party
                           is required to me made or obtained by RGC in
                           connection with the execution, delivery and
                           performance of this Agreement or the consummation of
                           the transactions contemplated by it, other than
                           consents of the customers to the Assigned Contracts
                           and consents, approvals, authorizations, filings or
                           registrations which have been made or obtained.

         8.2      AEM's Representations and Warranties. AEM represents and
                  warrants to Highland that the following statements are true,
                  current and correct in all material respects as of the date of
                  Closing:

                  (a)      Existence and Powers. AEM is a limited liability
                           company existing and in good standing under the laws
                           of the State of Delaware.

                  (b)      Validity and Enforceability. This Agreement is a
                           binding and valid obligation of AEM and is
                           enforceable according to its terms, except as such
                           enforceability may be limited by bankruptcy,
                           insolvency, reorganization or such other laws of
                           general application relating to the rights and
                           remedies of creditors, or by general principles of
                           equity, including the availability of specific
                           performance.

                  (c)      Consents and Approvals. No consent, approval or
                           authorization of, or filing or registration with any
                           third party is required to me made or

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                           obtained by AEM in connection with the execution,
                           delivery, and performance of this Agreement or the
                           consummation of the transactions contemplated by it,
                           other than consents, approvals, authorizations,
                           filings or registrations which have been made or
                           obtained.

9.       OTHER ACTION.

         9.1      Assignment of Contracts. Each Party agrees to use commercially
                  reasonable efforts to accomplish all actions necessary to
                  consummate the transactions contemplated by this Agreement,
                  including but not limited to submitting all notices and
                  obtaining all authorizations, waivers and approvals required
                  in connection with the assignment of the Assigned Contracts.

10.      FUTURE MARKETING.

         Except as otherwise contemplated by this agreement, neither Highland
         nor any entity affiliated with Highland through ownership by Highland's
         parent company, directly or indirectly, of at least fifty percent of
         that entity's voting shares, shall attempt to sell any natural gas for
         consumption by an existing customer at any facility serviced under the
         Assigned Contracts for a period beginning on the Date of Transfer and
         ending on July 1, 2009. The Parties acknowledge that existing Highland
         customers have the right to purchase "tariff" gas from Roanoke Gas
         Company and any such purchase decision by a customer does not violate
         this agreement. The Parties further acknowledge that in the event of an
         alleged violation of the provisions of this section, AEM shall be
         entitled to seek injunctive relief in addition to damages and other
         remedies for such violation.

11.      MISCELLANEOUS.

         11.1     Survival. All covenants, representations and indemnifications
                  made in this Agreement shall survive the Closing for a period
                  of one year.

         11.2     Further Assurances. From time to time, each Party shall,
                  without further consideration, execute and deliver such
                  instruments as shall be reasonably necessary to effectuate the
                  intentions of this Agreement. The Parties shall cooperate and
                  take such other commercially reasonable actions to effectuate
                  the timely transfer of the Assigned Contracts.

         11.3     Conformity with Laws. Each Party shall be responsible for
                  compliance with all laws or regulations applicable to its
                  actions or obligations under this Agreement.

         11.4     Expenses.  Each Party shall bear its own costs and expenses
                  incurred in connection with the transactions and
                  investigations contemplated by this

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                  Agreement, including the fees and expenses of respective legal
                  counsel, accountants and financial advisors.

         11.5     NO CONSEQUENTIAL DAMAGES. IN NO EVENT SHALL EITHER PARTY BE
                  LIABLE TO THE OTHER PARTY IN CONNECTION WITH THIS AGREEMENT
                  FOR INDIRECT, INCIDENTAL, CONSEQUENTIAL OR SPECIAL DAMAGES OF
                  ANY NATURE, INCLUDING, BUT NOT LIMITED TO LOSS OF PROFITS OR
                  SALES. NEITHER PARTY SHALL BE LIABLE TO THE OTHER PARTY FOR
                  ANY EXEMPLARY OR PUNITIVE DAMAGES. THE ACTUAL ECONOMIC LOSS
                  FROM DAMAGES CLAIMED BY A PARTY WILL BE COMPUTED BY NETTING
                  OUT ANY INSURANCE RECOVERIES FROM THE LOSS OR DAMAGE CLAIMED,
                  AND TAX BENEFITS RECEIVED.

         11.6     Independent Contractor. The Parties at all times shall be
                  deemed to be independent of each other. Except as specified in
                  this Agreement, each Party shall bear its own expenses in
                  connection with its performance under the terms of this
                  Agreement. No employee of either Party shall be deemed to be
                  an employee of the other Party in connection with the
                  discharge of duties under this Agreement for any purpose.

         11.7     Successor and Assigns. This Agreement shall be binding on and
                  inure to the benefit of the successors and permitted assigns
                  of the Parties. Notwithstanding the foregoing, no transfer or
                  assignment of the rights and obligations under this Agreement
                  shall be made by a Party without the written consent of the
                  other Party, which may be withheld in the sole opinion of the
                  Party's whose consent is sought; provided however, that if
                  either Party, its members, general partners or parent
                  corporation sells or transfers all or substantially all of its
                  assets to a third party, then assignment of all rights and
                  obligations under this Agreement shall be effective upon the
                  written notice to the other Party of such sale or transfer.

         11.8     Confidentiality. All Proprietary Information of either Party
                  shall be and remain the exclusive property of that Party and
                  shall not be disclosed by the other Party to any third persons
                  or be used for any purpose not contemplated by this Agreement.
                  This Agreement shall not be construed to grant either Party
                  any license or other rights to the Proprietary Information of
                  the other Party, except as specifically provided for in this
                  Agreement. These obligations regarding confidentiality shall
                  survive the Date of Transfer or termination of this Agreement,
                  whichever were to occur first, for a period of twenty four
                  months. The Parties acknowledge (1) that RGC Resources, Inc.,
                  the parent company of Highland, will have certain disclosure
                  requirements with respect to this agreement as a result of its
                  status of a publicly traded and NASDAQ listed company and any
                  such disclosures on the part of RGC Resources do not violate
                  this provision and (2) that Atmos Energy Corporation,

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                  the parent company of AEM, may have certain disclosure
                  requirements with respect to this agreement as a result of its
                  status as a publicly traded and New York Stock Exchange listed
                  company and any such disclosures on the part of Atmos Energy
                  Corporation do not violate this provision. Furthermore,
                  Roanoke Gas Company and Atmos Energy Corporation, as regulated
                  public utilities, may be required to make certain regulatory
                  disclosures to the Virginia State Corporation Commission or
                  other regulatory authorities having jurisdiction over Roanoke
                  Gas Company or Atmos Energy Corporation and their respective
                  utility operations, and the Parties acknowledge that such
                  disclosures do not violate this provision.

                  (a)      Description of Proprietary Information. As used in
                           the context of this Agreement, Proprietary
                           Information includes any information described by the
                           disclosing Party as confidential, or which a
                           reasonable business person would recognize as
                           confidential in nature. Proprietary Information shall
                           include, but not be limited to:

                           (1)      the terms of this Agreement, except as may
                                    be required disclosures under RGC Resources,
                                    Inc. and/or Atmos Energy Corporation SEC
                                    filing requirements;

                           (2)      the terms of the Assigned Contracts; and

                           (3)      any current or future business plans of
                                    either Party.

         11.9     Exclusions from Confidentiality.  The obligation to protect
                  the confidentiality of Proprietary Information shall not
                  apply to:

                           (1)      information which is in the public domain as
                                    of the date of this Agreement, or which
                                    later enters the public domain from a source
                                    other than the receiving Party;

                           (2)      information which the receiving Party
                                    receives from a bona fide third party which
                                    is not under any obligation of
                                    confidentiality;

                           (3)      information approved in writing for
                                    disclosure by the Party owning such
                                    information; and

                           (4)      information which is required to be
                                    disclosed by law or administrative order, in
                                    which case the Parties shall seek to obtain
                                    the strongest possible protective orders to
                                    limit the disclosure of such information.


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The Party seeking to disclose information as described in this section shall
have the burden of proof in any dispute to establish the applicability of any of
the above exclusions.

         11.10    Controlling Law. This Agreement shall be interpreted in
                  accordance with the contract law of the Commonwealth of
                  Virginia without regard to the applicability of conflicts of
                  law principles. Venue shall lie in any court of competent
                  jurisdiction within Roanoke City, Virginia.

         11.11    Media Announcements. Neither Party shall deliver to the press
                  an announcement of this Agreement without the express written
                  consent of the other Party, notwithstanding, however, both
                  Parties recognize the potential obligation of RGC Resources,
                  Inc., parent company of Highland and Atmos Energy Corporation,
                  parent company of AEM, to disclose financial information in
                  SEC filings and to respond to media inquiries relative to
                  quarterly financial releases and SEC filings, and agree that
                  such disclosure or response shall not be subject to the
                  written consent requirement of this Section 11.11.

         11.12    Integration and Amendment. This Agreement sets forth the
                  entire understanding between the Parties with respect to the
                  subject matter. This Agreement supersedes all prior
                  negotiations, discussions or agreements. This Agreement may
                  not be modified or amended except in writing signed by the
                  Parties. Any waiver of a right under this Agreement shall not
                  be deemed to be a subsequent waiver of that right, or any
                  other right or remedy.

         IN WITNESS OF THIS AGREEMENT, the Parties have caused their duly
authorized representatives to sign this Agreement in multiple counterparts, each
of which shall be deemed to be an original document.

DIVERSIFIED ENERGY COMPANY                      ATMOS ENERGY MARKETING, LLC
d/b/a HIGHLAND ENERGY

P. O. Box 13007                                 11251 Northwest Freeway
Roanoke, Virginia 24030                         Suite 400
                                                Houston, Texas 77092

By: /s/ John B. Williamson, III                 By: /s/ Rob Ellis
Printed Name:  John B. Williamson, III          Printed Name:  Rob Ellis
Title: Chairman, President and CEO              Title:  Senior Vice President

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                        LIST OF EXHIBITS AND ATTACHMENTS


Exhibit A         -        Assigned Contracts

Exhibit B         -        Highland Energy Customer Allocation


Attachment 1      -        Assignment, Conveyance and Bill of Sale


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