TGX CORP
SC 13E3/A, 1996-09-20
CRUDE PETROLEUM & NATURAL GAS
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<PAGE>
 
================================================================================

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

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

                                   RULE 13E-3
                             TRANSACTION STATEMENT
                                  (Pursuant to
             Section 13(e) of the Securities Exchange Act of 1934)

    
                                AMENDMENT NO. 2     

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

                                TGX CORPORATION
                              (Name of the Issuer)

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

                                TGX CORPORATION
                              JEFFREY E. SUSSKIND
                               LARRY H. CARPENTER
                      (Name of Persons Filing Statement)        

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

         COMMON STOCK, $.01 PAR VALUE                    8724244106
SERIES A SENIOR PREFERRED STOCK, $1 PAR VALUE            87242405000
        (Title of Class of Securities)                (Cusip Number of 
                                                     Class of Securities)

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

                               LARRY H. CARPENTER
                             CHAIRMAN OF THE BOARD
                     PRESIDENT AND CHIEF EXECUTIVE OFFICER
                           222 PENNBRIGHT, SUITE 200
                              HOUSTON, TEXAS 77090
                                 (713) 872-0500
                 (Name, address and telephone number of person
               authorized to receive notices and communications 
                   on behalf of Persons Filing Statement)

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

                                   COPIES TO:
                             ARTHUR S. BERNER, ESQ.
                        WINSTEAD SECHREST & MINICK P.C.
                             910 TRAVIS, SUITE 1700
                              HOUSTON, TEXAS 77002
                                 (713) 650-2729

This statement is filed in connection with (check the appropriate box):

  a.  [X] The filing of solicitation materials or an information statement
          subject to Regulation 14A [17 CFR 240.14a-1 to 240.14b-1], Regulation
          14C [17 CFR 240.14c-1 to 240.14c-101] or Rule 13e-3(c) [(S) 240.13e-
          3(c)] under the Securities Exchange Act of 1934.
 
  b.  [X] The filing of a registration statement under the Securities Act 
          of 1933.
 
  c.  [ ] A tender offer.
 
  d.  [ ] None of the above.
    
Check the following box if the soliciting materials or information statement
referred to in checking box (a) are preliminary copies: [ ]     
    
     
<PAGE>
 
                                TGX CORPORATION

                    ---------------------------------------
    
                                 SCHEDULE 13E-3/A-2     
                             CROSS-REFERENCE SHEET

                    ---------------------------------------
    
  The information contained in the Proxy Statement/Prospectus (the "Proxy
Statement/Prospectus") of Amendment No. 1 to the Form S-4 Registration Statement
filed by GeoStrat Resources, Inc. with the Securities and Exchange Commission is
hereby expressly incorporated by reference in this Schedule 13E-3/A-2. The
following cross-reference sheet is supplied pursuant to General Instruction F to
Schedule 13E-3 and shows the location in the Proxy Statement/Prospectus of the
information required to be included in response to the Items of the Schedule 
13E-3 in connection with the Rule 13e-3 transaction.    
<TABLE>    
<CAPTION>
                                                                       LOCATION AND CAPTION
             ITEM IN SCHEDULE 13E-3                                IN PROXY STATEMENT/PROSPECTUS
- ------------------------------------------------  ---------------------------------------------------------------
<S>                                               <C> 
ITEM 1 - ISSUER AND CLASS OF SECURITY SUBJECT
 TO THE TRANSACTION
  (a).........................................    Outside Front Cover Page of Proxy Statement/Prospectus
  (b).........................................    Outside Front Cover Page of Proxy Statement/Prospectus;
                                                  Market Price Information
  (c), (d)....................................    Market Price Information
  (e).........................................    *
  (f).........................................    Employment Agreements; Executive Compensation

ITEM 2 - IDENTITY AND BACKGROUND                  The persons filing this statement are TGX Corporation (the
                                                  "Issuer"), the issuer of the common stock and the Series A
                                                  Senior Preferred Stock which are the subject of this
                                                  transaction, Mr. Jeffrey E. Susskind and Mr. Larry H. Carpenter.
  (a) - (d), (g)..............................    Proposals 2 and (a)--Election of Directors; Executive
                                                  Officers
  (e), (f)....................................    To the best of the knowledge of the undersigned, none of
                                                  the persons with respect to whom information is provided
                                                  in response to this Item was during the last five years
                                                  (i) convicted in a criminal proceeding (excluding traffic
                                                  violations or similar misdemeanors) or (ii) 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 further violations of, or prohibiting activities
                                                  subject to, federal or state securities laws or finding any
                                                  violation of such laws.
</TABLE>      
- ------------
* The item is inapplicable or the answer is negative.
<PAGE>
 
<TABLE>    
<CAPTION> 
                                                                       LOCATION AND CAPTION
             ITEM IN SCHEDULE 13E-3                                IN PROXY STATEMENT/PROSPECTUS
- ------------------------------------------------  ---------------------------------------------------------------
<S>                                               <C> 
ITEM 3 - PAST CONTACTS, TRANSACTIONS OR
 NEGOTIATIONS
  (a)...........................................  *
  (b)...........................................  *

ITEM 4 - TERMS OF THE TRANSACTION
  (a)...........................................  Proposal 1 -- The Merger -- The Merger Agreement;
                                                  -- Conditions to Merger; -- Exchange of Certificates;
                                                  Appendix "A" to Proxy Statement/Prospectus:  Agreement
                                                  of Merger
  (b)...........................................  Special Factors; Proposal 1 -- The Merger -- Interests of Certain Persons in
                                                  the Merger
Item 5 - Plans or Proposals of the Issuer or
 Affiliate
  (a) - (g).....................................  *
ITEM 6 - SOURCE AND AMOUNTS OF FUNDS OR
 OTHER CONTRIBUTIONS
  (a)...........................................  *
  (b)...........................................  The Meetings
  (c)...........................................  *
  (d)...........................................  *
 
ITEM 7 - PURPOSE(S), ALTERNATIVES, REASONS AND
 EFFECTS
 (a) - (c)......................................  Special Factors; Summary -- Reasons for Merger; Proposal 1 -- The Merger
                                                  -- Background and Reasons for the Merger
 (d)............................................  Special Factors; Proposal 1 -- The Merger -- Background and Reasons for
                                                  the Merger; -- Certain Federal Income Tax Considerations;
                                                  -- Accounting Treatment; -- Appraisal Rights
ITEM 8 - FAIRNESS OF THE TRANSACTION
  (a), (b)......................................  Special Factors; Summary -- Recommendation of Board; -- Opinion of
                                                  Appraisal and Valuation Firm; -- Limitations on Opinion of
                                                  Appraisal and Valuation Firm; Proposal 1 -- The Merger-- 
                                                  Background and Reasons for the Merger;-- Recommendation 
                                                  of Board; -- Opinion of Valuation and Appraisal Firm
</TABLE>      
- ------------
* The item is inapplicable or the answer is negative.

                                       2
<PAGE>
 
<TABLE>    
<CAPTION> 
                                                                       LOCATION AND CAPTION
             ITEM IN SCHEDULE 13E-3                                IN PROXY STATEMENT/PROSPECTUS
- ------------------------------------------------  ---------------------------------------------------------------
<S>                                               <C> 
  (c)...........................................  Special Factors; The Meetings -- Vote Required.  
                                                  
  (d)...........................................  Special Factors
  (e)...........................................  Special Factors; Summary -- Recommendation of Board; Proposal 1 -- The
                                                  Merger -- Recommendation of Board
  (f)...........................................  *

ITEM 9 - REPORTS, OPINIONS, APPRAISALS AND
 CERTAIN NEGOTIATIONS
  (a), (b)......................................  Special Factors; Proposal 1 -- The Merger -- Opinion of Appraisal and
                                                  Valuation Firm; Appendix "D" to Proxy
                                                  Statement/Prospectus:  Opinion of American Appraisal
                                                  Associates, Inc.
  (c)...........................................  Special Factors
                                                  
ITEM 10 - INTEREST IN SECURITIES OF THE ISSUER
  (a)...........................................  Special Factors; Summary -- Vote Required; -- Recommendation of Board;
                                                  The Meetings -- Record Date; Stockholders Entitled to
                                                  Vote; -- Quorum; Vote Required; Certain Stock Owned by
                                                  Principal Stockholders and Management
  (b)...........................................  *

ITEM 11 - CONTRACTS, ARRANGEMENTS OR
 UNDERSTANDINGS WITH RESPECT TO THE ISSUER'S      *
 SECURITIES.....................................
 
ITEM 12 - PRESENT INTENTION AND
 RECOMMENDATION OF CERTAIN PERSONS WITH
 REGARD TO THE TRANSACTION
  (a), (b)......................................  Special Factors; The Meetings -- Quorum; Vote Required; Proposal 1 -- The
                                                  Merger -- Background and Reasons for the Merger;
                                                  -- Recommendation of Board; -- Interests of Certain
                                                  Persons in the Merger
</TABLE>     
- ------------
* The item is inapplicable or the answer is negative.

                                       3
<PAGE>
 
<TABLE>     
<CAPTION> 
                                                                       LOCATION AND CAPTION
             ITEM IN SCHEDULE 13E-3                                IN PROXY STATEMENT/PROSPECTUS
- ------------------------------------------------  ---------------------------------------------------------------
<S>                                               <C> 
ITEM 13 - OTHER PROVISIONS OF THE TRANSACTION
  (a)...........................................  Summary -- Appraisal Rights; Proposal 1 -- The Merger
                                                  -- Appraisal Rights; Appendix "E" to Proxy
                                                  Statement/Prospectus:  Section 262 of Delaware General
                                                  Corporation Law
  (b)...........................................  *
  (c)...........................................  *

ITEM 14 - FINANCIAL INFORMATION
  (a)...........................................  Summary -- Summary Financial Data; Financial Statements
  (b)...........................................  Financial Statements -- Unaudited Pro Forma Summary
                                                  Condensed Combined Financial Information

ITEM 15 - PERSONS AND ASSETS EMPLOYED,
 RETAINED OR UTILIZED
  (a), (b)......................................  Special Factors; Summary -- Opinion of Appraisal and Valuation Firm; The
                                                  Meetings -- Solicitation, Voting and Revocability of
                                                  Proxies; Date and Place of Meetings; Proposal 1 -- The
                                                  Merger -- Opinion of Appraisal and Valuation Firm
ITEM 16 - ADDITIONAL INFORMATION................  See text of the Proxy Statement/Prospectus
 
ITEM 17 - MATERIAL TO BE FILED AS EXHIBITS
  (a)...........................................  *
  (b)...........................................  Exhibit (b)-1:  Report of American Appraisal Associates, Inc. to Board of 
                                                  Directors - TGX Corporation 
                                                  Exhibit (b)-2:  Opinion of American Appraisal Associates, Inc. (incorporated 
                                                  by reference to Appendix "D" to the Proxy Statement/Prospectus)
  (c)...........................................  *
  (d)...........................................  Exhibit (d):  Letter to Stockholders; Notice of Special
                                                  Meetings of Stockholders; Proxy Statement/Prospectus;
                                                  Form of Proxy for Special Meetings of Stockholders
                                                  (incorporated by reference to GeoStrat Resources, Inc.
                                                  Form S-4 Registration Statement Amendment No. 1 filed with the
                                                  Commission on September 20, 1996)
  (e)...........................................  Exhibit (e):  Section 262 of Delaware General Corporation
                                                  Law (incorporated by reference to Appendix "E" to the
                                                  Proxy Statement/Prospectus)
  (f)...........................................  *
</TABLE>     
- ------------
* The item is inapplicable or the answer is negative.

                                       4
<PAGE>
 
                                   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: September 20, 1996     /s/ Larry H. Carpenter
                              __________________________________________
                              Larry H. Carpenter
                              Chairman of the Board, President and
                              Chief Executive Officer  


                              /s/ Jeffrey E. Susskind, Director
                              __________________________________________
                              Jeffrey E. Susskind, Director


                              TGX Corporation

                              /s/ Larry H. Carpenter
                              __________________________________________
                              Larry H. Carpenter, Chairman of the
                              Board, President and Chief Executive 
                              Officer       

                                       5



<PAGE>
 
CLIENT:    BOARD OF DIRECTORS - TGX CORPORATION
PROPERTY:  TGX CORPORATION
           FAIRNESS OPINION
CONTRACT:  030816

<TABLE> 
<CAPTION> 

                                                    CORRELATION AND CONCLUSION
                                                    --------------------------
                                                      (Thousands Of Dollars)

                                                        Plus:       Plus:                       Less:
                                                        Excess      Tax Benefit      Adjusted   Redemption         Value for
                       Business    Less:                Working     Net Operating    Equity     Value of           Old Preferred
Approach               Enterprise  Debt     Equity      Capital     Tax Loss         Value      Senior Preferred   and Common
- --------               ----------  -----    ------      -------     -------------    --------   ----------------   -------------
<S>                        <C>          <C>      <C>         <C>            <C>         <C>         <C>             <C>
Guideline Company           7,300        0        7,300       1,100          1,400       9,800       134,721         (124,921)
Transaction                 7,100        0        7,100       1,100          1,400       9,600       134,721         (125,121)
Discounted Cash Flow        7,900        0        7,900       1,100          1,400      10,400       134,721         (124,321)

Net Asset Value            10,745        0       10,745      na           na            10,745       134,721         (123,976)

Liquidation                 7,501        0        7,501      na           na             7,501       134,721         (127,220)

</TABLE> 

Conclusion:

        Old Preferred and Common do not have any realizable value.

        Senior Preferred Shareholders' will not realize their redemption value;
        the issue for the fairness is whether the shareholders will be better 
        off, the same, or worse if the merger takes place.

Net Asset Value:    Business Enterprise = Total Assets less Current Liabilities
                       Total Assets            $13,045
                       Current Liabilities     $ 2,300
                                               -------
                                BEV            $10,745

Liquidation Value:  Business Enterprise = Total Assets less Current Liabilities
                       Total Assets            $ 9,801
                       Current Liabilities     $ 2,300
                                               -------
                                BEV            $ 7,501


<PAGE>
 
TGX CORPORATION AND SUBSIDIARIES
030816
FAIRNESS OPINION

                                TGX CORPORATION
                      FINANCIALS USED IN ESTIMATING VALUE
                            (THOUSANDS OF DOLLARS)

<TABLE> 
<CAPTION> 
                                                                       Adjusted       Latest Twelve
                                                                       Year Ended     Months Ended      Recasted      Recasted
                                                                       December 31,   May 31,           1996 Budget   1997 Budget
                                                                       ------------   -------------     -----------   -----------
                                                                           1995            1996
<S>                                                                    <C>            <C>               <C>           <C>
REVENUES
  Oil and natural gas sales                                             $   3,611      $   4,103         $   4,441     $   4,612
  Natural gas gathering                                                       245            235              $184          $160
  Equity earnings in Comite Field Plant Venture                               449            539              $398          $534
  Gain on property sales                                                       68            213                $0            $0
  Other, net                                                                  224            105               $14            $0
                                                                        ---------      ---------         ---------     ---------
                                                                            4,597          5,195             5,037         5,306

COSTS AND EXPENSES
  Operating expenses                                                        1,905          2,033             1,816         1,645
  Depletion, depreciation and amortization                                    973          1,074               898         1,134
  Exploration costs                                                            69             35               500           500
  General and administrative expenses                                       2,582          2,720             1,944         1,943
  Interest expense                                                            142            138                77            77
                                                                        ---------      ---------         ---------     ---------
                                                                            5,671          6,000             5,235         5,299

INCOME (LOSS) BEFORE INCOME TAXES AND
  EXTRAORDINARY GAIN                                                       (1,074)          (805)             (198)            8

  Income tax expense (benefit)                                               (163)          (163)                0             0

INCOME (LOSS) BEFORE EXTRAORDINARY GAIN                                      (911)          (642)             (198)            8
  Extraordinary Gain                                                           93              0                 0             0

NET INCOME (LOSS)                                                            (818)          (642)             (198)            8

  Preferred stock dividends                                               (12,308)       (12,142)          (13,163)      (14,449)
  Accretion of Senior Preferred redemption value                           (5,045)        (5,527)           (6,147)       (7,613)

NET LOSS APPLICABLE TO COMMON STOCK                                      ($18,171)      ($18,311)         ($19,508)     ($22,054)

CASH FLOWS FROM OPERATING ACTIVITIES
  Net Income (Loss)                                                          (818)         ($642)            ($198)           $8
Adjustments to reconcile net loss before
 extraordinary gain to cash provided by
 operating activities:
  Depletion, depreciation and amortization                                    973          1,074               898         1,134
  Amortization of debt transaction costs and
   stock compensation                                                          79             64                80            78
  Distributions in excess of equity earnings                                  139            111               184           185
  Non-cash recovery of affiliate receivable                                     0              0
  Extraordinary gain                                                          (93)             0                 0             0
  Changes in operating assets and liabilities:                                                                 (193)           0
   Decrease(increase) in accounts receivable                                   65           (181)
   Decrease in accounts due from/to affiliates, net                           256             82
   Decrease in other current assets                                             9            (41)
   Decrease in accounts payable and accrued liabilities                      (162)          (992)

NET CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES                           448           (525)              534         1,405

CASH FLOWS FROM INVESTING ACTIVITIES:
  Capital expenditures                                                     (1,128)        (1,246)           (1,000)        1,500
  Proceeds from disposal of assets                                             68             68                 0             0
  Decrease (increase) in other assets                                           0            (13)                0             0
  NET CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES                      (1,060)        (1,191)           (1,000)        1,500

CASH FLOWS FROM FINANCING ACTIVITIES:
  Principal payments of long-term debt and notes payable                   (1,601)        (1,873)
  Advances pursuant to revolving credit facility                              850          1,050
  Debt transaction costs and other                                            (35)           (35)
  Decrease in affiliate accounts receivable                                     0              0
  NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES                        (786)          (858)

NET DECREASE IN CASH AND CASH EQUIVALENTS                                  (1,398)        (2,574)

CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD                              676            960

CASH AND CASH EQUIVALENTS AT END OF PERIOD                                  ($722)       ($1,614)
</TABLE> 

<PAGE>
 
TGX CORPORATION AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEET
(Unaudited) (In Thousands)                                        06/18/96


<TABLE> 
<CAPTION> 
                                                         May 31,   December 31,
                                                          1996         1995
- ----------------------------------------------------   ----------  ------------
<S>                                                    <C>         <C> 
ASSETS:
  Current Assets
    Cash - Unrestricted                                 $ 2,496     $    292
    Cash - Restricted                                        35           92
    Accounts Receivable, Net                              1,144        1,141
    Accounts Receivable from Affiliates                                    6
    Prepaid Expenses                                        182           51
- ----------------------------------------------------   ----------  ------------
      Total Current Assets                                3,857        1,582
- ----------------------------------------------------   ----------  ------------
  Property, Plant & Equipment
    Oil & Natural Gas Properties (Successful Efforts)    11,632       11,340
    Gas Processing Facilities, Capital Leases & Other       245          203
- ----------------------------------------------------   ----------  ------------
      Total Property, Plant & Equipment                  11,877       11,543
      Less:  Accumulated Depletion, Depreciation
        and Amortization                                  4,525        4,132
- ----------------------------------------------------   ----------  ------------
      Net Property, Plant and Equipment                   7,352        7,411
- ----------------------------------------------------   ----------  ------------
  Other Assets
    Accounts Receivable from Affiliates
    Investment in Comite Field Plant Venture                725          739
    Other                                                    30           59
- ----------------------------------------------------   ----------  ------------
    Total Other Assets                                      755          798
- ----------------------------------------------------   ----------  ------------
Total Assets                                            $11,964     $  9,791
====================================================   ==========  ============
</TABLE> 

<PAGE>
 
TGX CORPORATION AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEET
(Unaudited) (In Thousands)                                       06/18/96


<TABLE> 
<CAPTION> 
                                                                  MAY 31,   DECEMBER 31,
                                                                   1996         1995
- ---------------------------------------------------------       ----------  ------------
<S>                                                             <C>         <C> 
LIABILITIES AND STOCKHOLDERS' EQUITY
  Current Liabilities Generally Not Subject To Compromise
    Accounts Payable                                             $     98    $     555
    Accounts Payable to Affiliates
    Undistributed Oil & Gas Revenue                                 1,329        1,152
    Accrued Interest
    Notes Payable
    Current Maturities, Long-term Debt
    Other Liabilities                                               1,106        1,646
- ---------------------------------------------------------       ----------  ------------
      Total Current Liabilities                                     2,533        3,353
- ---------------------------------------------------------       ----------  ------------
  Long-term Debt, less Current Maturities
    Bank Debt                                                                      500
- ---------------------------------------------------------       ----------  ------------
      Total                                                                        500
- ---------------------------------------------------------       ----------  ------------
        Total Liabilities                                           2,533        3,853
- ---------------------------------------------------------       ----------  ------------
  Senior Preferred Stock                                           69,500       61,737
- ---------------------------------------------------------       ----------  ------------
  Stockholders' Equity
    Old Preferred Stock                                               469          458
    Common Stock                                                      290          290
    Additional Paid-in Capital                                      1,523        1,422
    Retained Earnings (Deficit)                                   (62,351)     (57,969)
- ---------------------------------------------------------       ----------  ------------
      Total Stockholders' Equity                                  (60,069)     (55,799)
- ---------------------------------------------------------       ----------  ------------
  Total Liabilities and Stockholders' Equity                     $ 11,964    $   9,791
=========================================================       ==========  ============
</TABLE> 

<PAGE>
 
CLIENT:    BOARD OF DIRECTORS - TGX CORPORATION
PROPERTY:  TGX CORPORATION
           FAIRNESS OPINION
CONTRACT:  030816

<TABLE> 
<CAPTION> 

                          Guideline Company Approach
                          --------------------------
                            (Thousands of Dollars)


                      LATEST FISCAL YEAR            LATEST TWELVE MONTHS
                      ------------------            --------------------
Multiples             RANGE       MEDIAN            RANGE         MEDIAN
- ---------             -----       ------            -----         ------
<S>                   <C>         <C>               <C>           <C> 

EBDITA                 2.6 - 13.9     9.0            2.6 -  82.2      7.5
EBIT                  12.7 - 84.6    41.5           12.0 -  65.8     20.3
DFCF                   2.6 - 21.5     9.0            2.6 - 139.9      7.5

Price to
         NAV           .47 - 2.15    1.40
       10 PV           .19 - 1.05    0.52

 Increase in product prices appears to be the primary difference in multiples
</TABLE> 

<TABLE> 
<CAPTION> 

TGX                  LATEST FISCAL         LATEST TWELVE
Earnings             YEAR                  MONTHS
- --------             -------------         -------------
<S>                  <C>                   <C> 

EBDITA                      $120                 $471
EBIT                       ($932)               ($667)
DFCF                        $259                 $582

         NAV              $5,938
       10 PV             $11,804
</TABLE> 


<TABLE> 
<CAPTION> 

Indicated Values using Median Multiples                                                    Indicated
                                                               Indicated                   Value        Premium       Indicated
                                     Earnings    Multiples     Value         Weight        Minority     for Control   Value
                                     --------    ---------     ---------     ------        ---------    -----------   ---------
<S>                                  <C>         <C>           <C>           <C>           <C>          <C>           <C> 

Latest Fiscal Year
              EBDITA                     $120           9.00     $1,080        0.00%
              EBIT                      ($932)         41.50     nm,f          0.00%
              DFCF                       $259           9.00     $2,331        0.00%

Latest Twelve Months
              EBDITA                     $471           7.50     $3,533       25.00%           $883
              EBIT                      ($667)         20.30     nm,f
              DFCF                       $582           7.50     $4,365       25.00%         $1,091

NAV                                    $5,938           1.40     $8,313       25.00%         $2,078
10 PV                                 $11,804           0.52     $6,138       25.00%         $1,535
                                                                                             ------
                                                                                             $5,587       30.00%       $7,263
</TABLE> 

- ------------------------------------------------------------------
Debt Free Cash Flow:                               LFY      LTM
        EBDITA                                       120       471
        Plus
        Distributions in excess of equity earnings   139       111
                                                     ---       ---
                                                     259       582

<PAGE>
 
TGX
030816
Fairness Opinion


<TABLE> 
<CAPTION> 

                                                       Comparative Companies

                                               Oil & Gas                     Net Asset      Market Value    Price to    Price to
Company                       Total Assets     Properties     10 PV Value    Value (NAV)    Equity          NAV         10 PV Value
- -------                       ------------     ----------     -----------    -----------    ------------    --------    -----------
<S>                           <C>              <C>            <C>            <C>            <C>             <C>         <C> 
ABRAXAS                       $85,067,358      $74,475,683    $87,159,919    $37,062,806    $45,200,000      121.96%        51.86%
AMERAC(a)                      11,194,000       20,614,000     14,051,000      5,994,000     10,400,000      173.51%        74.02%
BASIC EARTH SCIENCE (a)         3,149,000        2,625,000      4,725,000      1,902,000        900,000       47.32%        19.05%
HALLADOR (a)                   11,926,000        7,444,000     10,000,000      4,637,000      5,000,000      107.83%        50.00%
MIDDLE BAY                      8,984,752        7,828,000     10,411,000      2,501,219      3,600,000      143.93%        34.58%
MIDLAND                        14,123,352        9,887,998     17,687,654      7,648,032     15,700,000      205.28%        88.76%
NATIONAL ENERGY                43,491,366       32,971,131     36,278,000     17,774,567     38,300,000      215.48%       105.57%

          Average             $25,419,404      $22,263,687    $25,758,939    $11,074,232    $17,014,286      145.04%        60.55%
          Median              $11,926,000      $ 9,887,998    $14,051,000    $ 5,994,000    $10,400,000      143.93%        51.86%

TGX                           $ 9,791,000      $ 7,411,000    $11,804,000    $ 5,938,000

</TABLE> 


<TABLE> 
<CAPTION> 
                                                     Number of Wells

                                         Oil                                 Gas
Company                        Gross           Net              Gross                Net           States Wells are located
- -------                        ----------------------           ----------------------------       ------------------------
<S>                            <C>            <C>               <C>                 <C>            <C> 
ABRAXAS                           306           144.4               110                 51.5       TX,ND,MA,NM,WY,AL
AMERAC                             19              10                19                  6.7       CO,KA,TX,UT,WY, offshore LA
BASIC EARTH SCIENCE               115           67.12                20                  4.3       CO,KA,LA,MA,NM,ND,OK,TX,WY
HALLADOR                           80              51                12                 7.62       CA
MIDDLE BAY                        604              98             28.26                14.52       AL,AR,LA,WY,TX,MI,OK,NM,MS
MIDLAND                           172           108.6                19                 10.2       TX,IL,OK,CO,ND
NATIONAL ENERGY                   128           99.36                76                29.01       TX,OK,NM,WY

TGX                                56              17                93                   14       AK,LA,OK,TX

(a) Stock is not actively traded; very little volume.

</TABLE> 


<PAGE>
 
TGX
   30816

                Fairness Opinion

<TABLE> 
<CAPTION> 

                                 Valuation Parameters for the Prudential Securities E&P Companies
                                 ----------------------------------------------------------------

                                           Stock Price   Price/Cash Flow         Price/Earnings          Price to
Company                    Symbol            04/29/96        1996E    1997E          1996E     1997E     Net Asset Value
- -------                    ------            --------        -----    -----          -----     -----     ---------------
<S>                        <C>               <C>             <C>      <C>            <C>       <C>       <C> 
Anadarko Petroleum          APC               $59.00          69.4     35.4           14.6      10.0          190.0%
Apache Corp                 APA               $29.50          44.4     25.4            6.4       5.4          142.0%
Burlington Resources        BR                $38.00          44.6     45.1           10.0       9.6          136.0%
Chesapeake Energy           CHK               $68.13          63.3     27.5           13.6       7.1          671.0%
Devon Energy                DVN               $25.75          25.7     22.4            7.4       6.5          145.0%
Enron Oil & Gas             EOG               $27.13          30.2     23.5           10.1       9.1          209.0%
Louisiana Land & Expl.      LLX               $54.63          34.5     40.3            5.9       6.3          137.0%
Noble Affiliates            NBL               $35.88          31.7     33.7            6.1       6.7          175.0%
Oryx Energy                 ORX               $16.25          14.1     15.5            3.2       3.1           98.0%
Pogo Producing              PPP               $36.38          70.1     31.4           11.3       9.2          181.0%
Santa Fe Energy Res.        SFR               $12.25          25.4     24.2            4.8       4.2          135.0%
Union Pacific Res.          UPR               $27.88          26.5     20.1            7.9       6.9          188.0%
Union Texas Petrol.         UTH               $19.50          15.1     15.0            4.9       4.9           81.0%

         Average                                              38.1     27.7            8.2       6.8          191.4%
         Median                                               31.7     25.4            7.4       6.7          145.0%


Source:  Anadarko Petroleum - Company Report, prepared by Prudential Bache Securities, Inc., 4/30/96

</TABLE> 

<PAGE>
 
<TABLE> 
<CAPTION> 
CLIENT:    BOARD OF DIRECTORS-TGX CORPORATION
PROPERTY:  TGX CORPORATION
           FAIRNESS OPINION
CONTRACT: 030816

====================================================================================================================================
                                                          INCOME APPROACH
                                                         EQUITY VALUATION
====================================================================================================================================
                                                                                                                    Table 2

                                                         Terminal                            Terminal                      Value
Terminal Value Calculation           growth rate          Factor                              Value                         15.75%
                                                         --------                           ----------                   ----------
                                                            $                                   $                           $
<S>                                         <C>              <C>                                <C>                          <C>  
Capitalized Final Year DFNCF
at WACC less g                    g=       5.0%               1,821                              16,943                       2,324
                       expenses   g=       4.0%

                                     VALUATION SUMMARY

                                      P.V. OF          DISCOUNTED                            
                                      INTERIM           TERMINAL                              INDICATED
                                     CASH FLOWS          VALUE                                  VALUE   
                                   --------------     ------------                           -----------
                                          $                $                                      $

Based on:
 Capitalized Final Year DFNCF
at WACC less g                             5,564            2,324                                  7,888
                                                                                              ----------- 

                                     INDICATED INVESTED CAPITAL VALUE:                             7,888

                                     LESS LONG-TERM DEBT:                                              0
                                                                                              ----------- 
                                     INDICATED EQUITY VALUE:                                       7,888

                                     PLUS EXCESS WORKING CAPITAL:                                  1,094

                                                ROUNDED TO                                        $9,000 THOUSANDS
                                                                                              =====================

                NOTES:

                Projections include management budgets for 1996 and 1997 and AAA's extrapolation thereafter.

                Depreciation grown at 4% after 1997
                Capital Expenditures set equal to depreciation; consistent with comparative companies and subject historically
                Working capital based on discussions with management, comparative companies and TGX's historical experience
                        As of May 31, 1996
                                Current Assets              $3,857
                                Current Liabilities         $2,533
                                                            ------
                                Working Capital             $1,324

                                Normal Working Capital
                                as a percent of revenues       5.0%

                                1995 Revenues               $4,597
                                Normal Working Capital        $230 1995 Revenues X 5%
                                
                                Excess Working Capital      $1,094 Actual-Normal

</TABLE> 
<PAGE>

<TABLE> 
<CAPTION> 

 
Client:     BOARD OF DIRECTORS - TGX CORPORATION
Property:   TGX CORPORATION
            FAIRNESS OPINION
Contract:   030816                                                                             17-Jul-96     03:10 PM
==================================================================================================================================
                                                   INCOME APPROACH
                                                   EQUITY VALUATION
==================================================================================================================================
                                               Calculation Of Interim Cash Flows                             Table 1
                                                       ($ Thousands)
<S>                                            <C>         <C>          <C>         <C>         <C>         <C>         <C> 
                                               ------------------------------------------------------------------------------------
For the Years Ending                                                   Projected
  Dec. 31, 1996 - 2000                           Period 1     Period 2     Period 3    Period 4    Period 5    Period 6    Period 7
Number of Months                                        7           12           12          12          12          12          12
                                               ------------------------------------------------------------------------------------
Projected Sales                                    5,037         5,306        5,571       5,850       6,142       6,449       6,772
Cost of Goods Sold
  Operating Expenses                               1,816         1,645        1,711       1,779       1,850       1,924       2,001
  Exploration Costs                                  500           500            0           0           0           0           0
                                               ------------------------------------------------------------------------------------
Gross Margin                                       2,721         3,161        3,861       4,071       4,292       4,525       4,771

  General and Administrative expenses              1,944         1,943        2,021       2,102       2,186       2,273       2,364
                                               ------------------------------------------------------------------------------------
EBDITAD                                              777         1,218        1,840       1,969       2,106       2,252       2,407

Depletion, Depreciation & Amortization               898         1,134        1,179       1,227       1,276       1,327       1,380
                                               ------------------------------------------------------------------------------------
EBIT                                                (121)           84          660         743         831         925       1,027

Estimated Taxes @                     34.0%            0             0            0           0           0           0           0
                                               ------------------------------------------------------------------------------------
Debt-Free Net Income                                (121)           84          660         743         831         925       1,027

Add:
  Depletion, Depreciation & Amortization             898         1,134        1,179       1,227       1,276       1,327       1,380
  Distributions in excess of equity earnings         184           185          194         204         214         225         236

Less:
  Capital Expenditures                             1,000         1,500        1,179       1,227       1,276       1,327       1,380
  Working Capital Requirements @       5.0%           22            13           13          14          15          15          16
                                               ------------------------------------------------------------------------------------
Debt-Free Net Cash Flow                              (61)         (110)         841         933       1,030       1,135       1,247
                                               ------------------------------------------------------------------------------------
Partial Period Adjustment                           0.58          1.00         1.00        1.00        1.00        1.00        1.00
                                               ------------------------------------------------------------------------------------
Adjusted Debt Free Net Cash Flow                     (36)         (110)         841         933       1,030       1,135       1,247
                                               ------------------------------------------------------------------------------------
Discount Period                                     0.29          1.08         2.08        3.08        4.08        5.08        6.08
                                               ------------------------------------------------------------------------------------
                                               ------------------------------------------------------------------------------------
Factor @ WACC                        15.75%       0.9582        0.8535       0.7373      0.6370      0.5503      0.4754      0.4108
                                               ------------------------------------------------------------------------------------
Present Value                                        (34)          (94)         620         594         567         540         512

Present Value of Interim Cash Flows                            5,564 Thousand

</TABLE> 


<TABLE> 
<CAPTION> 

<S>                                            <C>         <C>          <C>         <C>         <C>         <C>         <C> 
                                               ------------------------------------------------------------------------------------
For the Years Ending                           
  Dec. 31, 1996 - 2000                           Period 8     Period 9    Period 10   Period 11   Period 12   Period 13   Period 14
Number of Months                                       12           12           12          12          12          12          12
                                               ------------------------------------------------------------------------------------
Projected Sales                                    7,111         7,466        7,839       8,231       8,643       9,075       9,529
Cost of Goods Sold
  Operating Expenses                               2,081         2,165        2,251       2,341       2,435       2,532       2,634
  Exploration Costs                                    0             0            0           0           0           0           0
                                               ------------------------------------------------------------------------------------
Gross Margin                                       5,029         5,301        5,588       5,890       6,208       6,543       6,895

  General and Administrative expenses              2,459         2,557        2,659       2,765       2,876       2,991       3,111
                                               ------------------------------------------------------------------------------------
EBDITAD                                            2,571         2,745        2,929       3,125       3,332       3,551       3,784

Depletion, Depreciation & Amortization             1,435         1,492        1,552       1,614       1,679       1,746       1,816
                                               ------------------------------------------------------------------------------------
EBIT                                               1,136         1,252        1,377       1,510       1,653       1,806       1,969

Estimated Taxes @                     34.0%            0             0            0           0           0           0           0
                                               ------------------------------------------------------------------------------------
Debt-Free Net Income                               1,136         1,252        1,377       1,510       1,653       1,806       1,969

Add:
  Depletion, Depreciation & Amortization           1,435         1,492        1,552       1,614       1,679       1,746       1,816
  Distributions in excess of equity earnings         248           260          273         287         301         316         332

Less:
  Capital Expenditures                             1,435         1,492        1,552       1,614       1,679       1,746       1,816
  Working Capital Requirements @       5.0%           17            18           19          20          21          22          23
                                               ------------------------------------------------------------------------------------
Debt-Free Net Cash Flow                            1,367         1,495        1,632       1,778       1,934       2,101       2,278
                                               ------------------------------------------------------------------------------------
Partial Period Adjustment                           1.00          1.00         1.00        1.00        1.00        1.00        1.00
                                               ------------------------------------------------------------------------------------
Adjusted Debt Free Net Cash Flow                   1,367         1,495        1,632       1,778       1,934       2,101       2,278
                                               ------------------------------------------------------------------------------------
Discount Period                                     7.08          8.08         9.08       10.08       11.08       12.08       13.08
                                               ------------------------------------------------------------------------------------
                                               ------------------------------------------------------------------------------------
Factor @ WACC                        15.75%       0.3549        0.3066       0.2649      0.2288      0.1977      0.1708      0.1475
                                               ------------------------------------------------------------------------------------
Present Value                                        485           458          432         407         382         359         336

</TABLE> 


<TABLE> 
<CAPTION> 

<S>                                            <C>                 <C>         
                                               --------------------------------
                                                                     5-YR
For the Years Ending                                                 CAGR
  Dec. 31, 1996 - 2000                        Perpetuity          (Per 1-5)
Number of Months                                       0             (b)
                                               --------------------------------
Projected Sales                                   10,005             5.1%
Cost of Goods Sold
  Operating Expenses                               2,739             0.5%
  Exploration Costs                                    0           NM
                                               --------------------------------
Gross Margin                                       7,266            12.1%
                                               --------------------------------
  General and Administrative expenses              3,111             3.0%
                                               --------------------------------
EBDITAD                                            4,155            28.3%

Depletion, Depreciation & Amortization             1,888             9.2%
                                               --------------------------------
EBIT                                               2,267             ERR

Estimated Taxes @                     34.0%          771             ERR
                                               --------------------------------
Debt-Free Net Income                               1,496             ERR

Add:
  Depletion, Depreciation & Amortization           1,888             9.2%
  Distributions in excess of equity earnings         349             3.9%

Less:
  Capital Expenditures                             1,888             6.3%
  Working Capital Requirements @       5.0%           24           NM
                                               --------------------------------
Debt-Free Net Cash Flow                            1,821             ERR
                                              
Partial Period Adjustment                          

Adjusted Debt Free Net Cash Flow                   

Discount Period                                    

Factor @ WACC                        15.75%      

Present Value                                    

Present value of Interim Cash Flows   5,564 thousand

</TABLE> 

<PAGE>
 
<TABLE> 
<CAPTION> 

CLIENT:    BOARD OF DIRECTORS-TGX CORPORATION                       APPRAISAL DATE: 7/1/96
PROPERTY:  TGX CORPORATION                                          FILENAME: DCF.WK1
           FAIRNESS OPINION
CONTRACT:  030816                                                      17-JUL-96                                           03.10 PM

====================================================================================================================================
                                      INCOME APPROACH
                                      EQUITY VALUATION
====================================================================================================================================
                                                                                                                            Table 3

<S>                                   <C>         <C>         <C>         <C>         <C>         <C>         <C>         <C>    
                                      ----------------------------------------------------------------------------------------------
                                                                Common 
For the Years Ending                                             Size
Dec. 31, 1996-2000                                             Projected
Number of Months                       Period 1    Period 2    Period 3    Period 4    Period 5    Period 6    Period 7    Period 8
                                      ----------------------------------------------------------------------------------------------
Projected Sales                          100.0%     100.0%      100.0%      100.0%      100.0%     100.0%      100.0%       100.0% 
Cost of Goods Sold
 Operating Expenses                       36.1%      31.0%       30.7%       30.4%       30.1%      29.8%       29.6%        29.3%
 Exploration Costs                         9.9%       9.4%        0.0%        0.0%        0.0%       0.0%        0.0%         0.0% 
                                      ----------------------------------------------------------------------------------------------
Gross Margin                              54.0%      59.6%       69.3%       69.6%       69.9%      70.2%       70.4%        70.7%

 General and Administrative expenses      38.6%      36.6%       36.3%       35.9%       35.6%      35.2%       34.9%        34.6%
                                      ----------------------------------------------------------------------------------------------
EBDITAD                                   15.4%      23.0%       33.0%       33.7%       34.3%      34.9%       35.5%        36.2%

Depletion, Depreciation & Amortization    17.8%      21.4%       21.2%       21.0%       20.8%      20.6%       20.4%        20.2%
                                      ----------------------------------------------------------------------------------------------
EBIT                                     (2.4)%       1.6%       11.9%       12.7%       13.5%      14.3%       15.2%        16.0%

Estimated Taxes @           34%            0.0%       0.0%        0.0%        0.0%        0.0%       0.0%        0.0%         0.0% 
                                      ----------------------------------------------------------------------------------------------
Debt-Free Net Income                      (2.4)%      1.6%       11.9%       12.7%       13.5%      14.3%       15.2%        16.0%

Add:
 Depletion, Depreciation & Amortization   17.8%      21.4%       21.2%       21.0%       20.8%      20.6%       20.4%        20.2%
 Distributions in excess of equity
  earnings                                 3.7%       3.5%        3.5%        3.5%        3.5%       3.5%        3.5%         3.5%

Less:
 Capital Expenditures                     19.9%      28.3%       21.2%       21.0%       20.8%      20.6%       20.4%        20.2%
 Working Capital
  Requirements @             5.0%          0.4%       0.3%        0.2%        0.2%        0.2%       0.2%        0.2%         0.2%
                                      ----------------------------------------------------------------------------------------------
Debt-Free Cash Flow                       (1.2)%    (2.1)%       15.1%       15.9%       16.8%      17.6%       18.4%        19.2%
</TABLE> 


<TABLE>
<CAPTION>  
<S>                                   <C>         <C>         <C>         <C>         <C>         <C>         <C>         <C>    
                                      ----------------------------------------------------------------------------------------------
                                                                       
For the Years Ending                                                  
Dec. 31, 1996-2000                                             
Number of Months                       Period 9    Period 10   Period 11   Period 12   Period 13   Period 14   Perpetuity          
                                      ---------------------------------------------------------------------------------------
Projected Sales                          100.0%      100.0%      100.0%      100.0%      100.0%    100.0%      100.0%              
Cost of Goods Sold                                                                                                                  
 Operating Expenses                       29.0%       28.7%       28.4%       28.2%       27.9%     27.6%       27.4%              
 Exploration Costs                         0.0%        0.0%        0.0%        0.0%        0.0%      0.0%        0.0%              
                                      ---------------------------------------------------------------------------------------       
Gross Margin                              71.0%       71.3%       71.6%       71.8%       72.1%     72.4%       72.6%              
                                                                                                                                    
 General and Administrative expenses      34.2%       33.9%       33.6%       33.3%       33.0%     32.6%       31.1%             
                                      ---------------------------------------------------------------------------------------       
EBDITAD                                   36.8%       37.4%       38.0%       38.5%       39.1%     39.7%       41.5%              
                                                                                                                                    
Depletion, Depreciation & Amortization    20.0%       19.8%       19.6%       19.4%       19.2%     19.1%       18.9%              
                                      ---------------------------------------------------------------------------------------       
EBIT                                      16.8%       17.6%       18.4%       19.1%       19.9%     20.7%       22.7%              
                                                                                                                                    
Estimated Taxes @           34%            0.0%        0.0%        0.0%        0.0%        0.0%      0.0%        7.7%              
                                      ---------------------------------------------------------------------------------------       
Debt-Free Net Income                      16.8%       17.6%       18.4%       19.1%       19.9%     20.7%       15.0%              
                                                                                                                                    
Add:                                                                                                                                
 Depletion, Depreciation & Amortization   20.0%       19.8%       19.6%       19.4%       19.2%     19.1%       18.9%              
 Distributions in excess of equity                                                                                                  
  earnings                                 3.5%        3.5%        3.5%        3.5%        3.5%      3.5%        3.5%              
                                                                                                                                    
Less:                                                                                                                               
 Capital Expenditures                     20.0%       19.8%       19.6%       19.4%       19.2%     19.1%       18.9%              
 Working Capital                                                                                                                    
  Requirements @             5.0%          0.2%        0.2%        0.2%        0.2%        0.2%      0.2%        0.2%              
                                      ---------------------------------------------------------------------------------------       
Debt-Free Cash Flow                       20.0%       20.8%       21.6%       22.4%       23.1%     23.9%       18.2%              
</TABLE> 
 
<PAGE>
 
CLIENT:     BOARD OF DIRECTORS - TGX CORPORATION
PROPERTY:   TGX CORPORATION
            FAIRNESS OPINION
CONTRACT:   030816                                       17-Jul-96    11:50 PM

<TABLE> 
<CAPTION> 

================================================================================
                         GUIDELINE TRANSACTION METHOD
                               EQUITY VALUATION
================================================================================

                               VALUATION SUMMARY

- ----------------------------    ------------------------------------------------
                                Invested    LT   Concluded    Value
         Approach   Detailed     Capital   Debt    Equity    Weights   Weighted
                    in Table      Value            Value              Conclusion
- ----------------------------    ------------------------------------------------
<S>                 <C>         <C>        <C>   <C>         <C>      <C> 

PRICE:REVENUES           1      $15,585.0        $15,585.0      0.0%       $0.0
PRICE:EBITDA             2      $ 7,065.0        $ 7,065.0    100.0%   $7,065.0
                                                              ------
                                                              100.0%

                                Indicated Equity Value:       $7,065
                                                              ------

                                ROUNDED TO:                   $7,100 THOUSAND
                                                              ======


        Latest Twelve Months and Latest Fiscal Year earnings examined due to
          TGX restructuring over the past two years.

        Latest Twelve Months used to estimate value.

</TABLE> 

<PAGE>
<TABLE> 
<CAPTION> 
CLIENT:    BOARD OF DIRECTORS-TGX CORPORATION
PROPERTY:  TGX CORPORATION
           FAIRNESS OPINION                                                                17-JUL-96            11:50 PM
           CONTRACT: 030816
====================================================================================================================================
                                                   GUIDELINE TRANSACTION METHOD
                                                    INVESTED CAPITAL VALUATION
====================================================================================================================================

                                                                                                                             Table 1

                                                         PRICE-TO-REVENUE

                                                       PRICE:REVENUE MULTIPLES        
                                                 ----------------------------------- 
                                                 5-YEAR       3-YEAR        LATEST                                       CONCLUDED
      GUIDELINE TRANSACTION                      AVERAGE      AVERAGE       FISCAL YEAR                                  WEIGHTS
- -----------------------------------              ---------------------------------------                               ------------
<S>                                              <C>          <C>          <C>                                         <C> 
Brock Exploration Corp.                              2.3          2.4            2.2                                         20.0%
Plains Petroleum Co.                                 5.7          5.4            5.4                                         20.0%
Red Eagle Resources Corp.                            1.4          1.5            2.9                                         20.0%
Samson Energy Co., L.P.                              3.2          2.8            3.0                                         20.0%
Tide West Oil Co.                                    2.8          1.8            1.6                                         20.0%
                                                                                                                      ------------
                                                                                                                            100.0%
                                                         MULTIPLES TIMES WEIGHTS             
                                                 --------------------------------------- 
                                                 5-YEAR       3-YEAR        LATEST        
                                                 AVERAGE      AVERAGE       FISCAL YEAR   
                                                 ---------------------------------------- 
Brock Exploration Corp.                              0.5          0.5            0.4                                              
Plains Petroleum Co.                                 1.1          1.1            1.1                                          
Red Eagle Resources Corp.                            0.3          0.3            0.6                                              
Samson Energy Co., L.P.                              0.6          0.6            0.6                                        
Tide West Oil Co.                                    0.6          0.4            0.3
                                                 ----------------------------------------   
                                               
Sum of Weighted Multiples                            3.1          2.8            3.0
Percent of Weight Used                             100.0%       100.0%         100.0%
                                                 ----------------------------------------   
WEIGHTED MULTIPLE                                    3.1          2.8            3.0


                                                             FACTORED   SUBJECT 
                                                  INDICATED      BY      COMPANY      INDICATED       CONCLUDED          WEIGHTED
EARNINGS LEVEL                                    MULTIPLE     100.0%    REVENUES       VALUE          WEIGHTS          CONCLUSION
- ------------------------------------------------------------------------------------------------------------------------------------
5-Year Average 1991-1995                            3.1        3.1                   NM                0.0%                $0.0
Latest Twelve Months                                3.0        3.0      $5,195       $15,585.0       100.0%           $15,585.0
Latest Fiscal Year-1995                             3.0        3.0      $4,597       $13,791.0         0.0%                $0.0
                                                                                                                      ----------
                                                         Sum of Weighted Streams:                                     $15,585.0
                                                         Percent of Total Weight Used:                                    100.0%
                                                                                                                      ----------
                                                         INDICATED INVESTED CAPITAL:                                  $15,585.0
                                                                                                                      ==========
</TABLE> 

<PAGE>

<TABLE> 
<CAPTION> 
CLIENT:    BOARD OF DIRECTORS-TGX CORPORATION
PROPERTY:  TGX CORPORATION
           FAIRNESS OPINION                                                                17-JUL-96            11:50 PM
CONTRACT: 030816
====================================================================================================================================
                                                   GUIDELINE TRANSACTION METHOD
                                                    INVESTED CAPITAL VALUATION
====================================================================================================================================

                                                                                                                             Table 2

                                                         PRICE-TO-EBDITA

                                                          PRICE:EBDITA MULTIPLES        
                                                 -----------------------------------------------------------
                                                 5-YEAR       3-YEAR        LATEST               0         0             CONCLUDED
      GUIDELINE TRANSACTION                      AVERAGE      AVERAGE       FISCAL YEAR          0         0             WEIGHTS
- -----------------------------------              ----------------------------------------------------------------------------------
<S>                                              <C>          <C>          <C>                <C>      <C>             <C> 
Brock Exploration Corp.                                                          4.3                                         20.0%
Plains Petroleum Co.                                                            27.5                                         20.0%
Red Eagle Resources Corp.                                                        3.8                                         20.0%
Samson Energy Co., L.P.                                                         25.3                                         20.0%
Tide West Oil Co.                                                               14.0                                         20.0%
                                                                                                                      ------------
                                                                                                                           100.0%
                                                         MULTIPLES TIMES WEIGHTS             
                                                 ----------------------------------------------------------- 
                                                 5-YEAR       3-YEAR        LATEST               0         0
                                                 AVERAGE      AVERAGE       FISCAL YEAR          0         0
                                                 ----------------------------------------------------------- 
Brock Exploration Corp.                              0.0          0.0            0.9           0.0       0.0                      
Plains Petroleum Co.                                 0.0          0.0            5.5           0.0       0.0
Red Eagle Resources Corp.                            0.0          0.0            0.8           0.0       0.0
Samson Energy Co., L.P.                              0.0          0.0            5.1           0.0       0.0
Tide West Oil Co.                                    0.0          0.0            2.8           0.0       0.0 
                                                 -----------------------------------------------------------
                                               
Sum of Weighted Multiples                            0.0          0.0           15.0           0.0       0.0
Percent of Weight Used                               0.0%         0.0%         100.0%          0.0       0.0
                                                 -----------------------------------------------------------
WEIGHTED MULTIPLE                                    0.0          0.0           15.0           0.0       0.0


                                                             FACTORED   SUBJECT 
                                                 INDICATED      BY      COMPANY      INDICATED       CONCLUDED          WEIGHTED
EARNINGS LEVEL                                   MULTIPLE     100.0%    EARNINGS       VALUE          WEIGHTS          CONCLUSION
- ------------------------------------------------------------------------------------------------------------------------------------
5-Year Average 1991-1995                            0.0        0.0                   NM                0.0%                $0.0
Latest Twelve Months                               15.0       15.0      $471.0       $7,065.0        100.0%            $7,065.0
Latest Fiscal Year-1995                            15.0       15.0      $120.0       $1,800.0          0.0%                $0.0
                                                                                                                      ----------
                                                         Sum of Weighted Streams:                                      $7,065.0
                                                         Percent of Total Weight Used:                                    100.0%
                                                                                                                      ----------
                                                         INDICATED INVESTED CAPITAL:                                   $7,065.0
                                                                                                                      ==========
</TABLE> 

 
<PAGE>

 
<TABLE>
<CAPTION>

TGX CORPORATION AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEET
(Thousands of Dollars)
<S>                                                     <C>                       <C>                <C> 
 
                                                        May 31, 1996            Fair Market           Liquidation 
                                                         (Unaudited)            Value                   Estimate
- -----------------------------------------------------------------------------------------------------------------------------------
Assets
 
Current Assets
 
  Cash                                                       2,531                 2,531                 2,531
 
  Accounts Receivables Net (a)                               1,144                   915                   572
 
  Prepaid Expenses (b)                                         182                    55                    18
 
    Total Current Assets                                     3,857                 3,501                 3,121
 
Property, Plant & Equipment
 
  Oil & Natural Gas Properties (c)                          11,632
 
  Gathering System & Other (d)                                 245
 
    Total Property, Plant & Equipment                       11,877
 
    Less: Accumulated Depletion,                             4,525
     Depreciation and Amortization
 
    Net Property, Plant and Equipment (e)                    7,352                 8,150                 5,705
      
Other Assets
 
  Investment in Comite Field Plant Venture (f)                 725                 1,394                   975
   
  Other (g)                                                     30                     0                     0
 
    Total Other Assets                                         755                 1,394                   975
 
 
Total Assets                                                11,964                13,045                 9,801
- ------------------------------------------------------------------------------------------------------------------------------------

                                                                1 

</TABLE>
<PAGE>
 
TGX CORPORATION AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEET
(Unaudited - In Thousands of Dollars)


<TABLE>
<CAPTION>
 
<S>                                                     <C>                       <C>                <C> 
 
                                                        May 31, 1996            Fair Market           Liquidation 
                                                                                Value                   Estimate
- ----------------------------------------------------------------------------------------------------------------------------------- 

 Liabilities and Stockholders' Equity
 
Current Liabilities
 
  Accounts Payable                                         98                   98                     98
 
  Undistributed Oil & Gas Revenue (h)                   1,329                1,329                  1,329
 
  Other Liabilities (i)                                 1,106                  873                    873
 
    Total Current Liabilities                           2,533                2,300                  2,300
 
 Long-term Debt                                             0                    0                      0
 
   Total Liabilities                                    2,533                2,300                  2,300
 
  Senior Preferred Stock (j)                           69,500              134,721                134,721
 
Stockholders' Equity
 
 Old Preferred Stock                                      469
 
 Common Stock                                             290
 
 Additional Paid-in Capital                             1,523
 
 Retained Earnings (Deficit)                          (62,351)
 
    Total Stockholders' Equity                        (60,069)            (123,976)              (127,220)
 
Total Liabilities and Stockholders' Equity             11,964               13,045                  9,801
- ------------------------------------------------------------------------------------------------------------------------------------

 
                                                                 2
</TABLE>
<PAGE>
 
TGX CORPORATION AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEET
(Unaudited - In Thousands of Dollars)
FOOTNOTES:

a.   Amount includes a $320k allowance for doubtfull accounts; management
     believes that the Net amount is collectable.  FMV based on 80% realized
     value and Liquidation based on 50% realized value.
b.   Includes Prepaid Rent, Prepaid Insurance, Prepaid Drilling and
     Miscellaneous; management believes that except for Prepaid Drilling (sunk
     cost) all other items have value.    FMV based on 30% realized value and
     Liquidation based on 10% realized value.
c.   Includes Comite Field Gathering System with a Fresh Start Value of $594k
     (fully amortized), Oil and Gas Reserves and Operating Assets.
d.   Includes Furniture and Fixtures and Roger Mills Gathering System (Fresh
     Start Value of $60k).
e.   Represents AAA's estimated market value for reserves of $7,321k and
     management's estimated value for Gathering Systems of $829k. Furniture and
     Equipment is assumed to be covered in rounding.  Liquidation value based on
     70% of market value.
f.   Management's estimate of Comite Plant Equity Interest.  Liquidation value
     based on 70% of market value.
g.   Unamortized portion of Bank One loan facility costs
h.   Includes Revenue clearing, Post sale revenues, Production taxes, Oil and
     Gas Suspense amounts, Gas balancing, current revenue payable, accrued
     liability for writeoffs, and undeliverable revenue checks. These are all
     true liabilities.
i.   Includes Louisiana franchise/severance taxes, accrued liabilities, Oil and
     gas suspense amounts and Production taxes.  The latter two are pre-petition
     claims that have not been pursued and are expected to be writing-down;
     legal opinion has not been given on the matter; true liability is estimated
     at 10% of face amount ($330k).  Accrued liabilities includes $100k for
     taxes related to the NFG settlement.  Management has revised the amount to
     $164k.
j.   Current liability including redemption amount and accrued dividends is
     $134,721k; redeemable on January 21, 2002, if funds are available.

                                       3
<PAGE>

<TABLE> 
<CAPTION> 

CLIENT:    BOARD OF DIRECTORS OF TGX
PROPERTY:  TGX-FAIRNESS OPINION                           DISCOUNT RATE DEVELOPMENT
                                                          -------------------------
 
VALUATION DATE=JULY 1, 1996                                  PERCENT IN
                                                              CAPITAL      WEIGHTED
                                                   COST      STRUCTURE       COST
                                               ---------------------------------------
<S>                                              <C>           <C>          <C>   
Equity (CAPM)                                    23.96%        59.8%        14.3% 
                                                                                  
Debt (Tax-effected Baa Bonds)                     5.52%        40.2%         2.2% 
                                                                                  
Weighted Average Cost of                                                          
Capital=                                                      100.0%        16.5% 
                                                                                  
CONCLUDED RATE                                                             16.50% 
                                                                          ======== 
- ------------------------------------------------------------------------------------------------------------------------------------

COMPARABLE COMPANIES
- --------------------
                                                                                  Shares                 Market             Onesoure
                                                            LTD                     Otsd     Price        Value             Database
                                                          (mm,s)                 % (mm,s)    per share   Equity     %   Total
                                                          --------------------------------------------------------------------------
<S>                                            <C>          <C>          <C>        <C>       <C>      <C>    <C>     <C>     <C> 
AGRAXAS PETROLEUM CORP                         AXAS              29.6        39.7%      6.7      6.71    45.0   60.3%   74.6  (0.60)
AMERAC ENERGY CORP                             3AENC             16.9        62.1%     24.0      0.43    10.3   37.9%   27.2  (2.60)
BASIC EARTH SCIENCE SYSTEMS                    3BSIC              0.8        44.5%     16.6      0.06     1.0   55.5%    1.8   1.00
HALLADOR PETROLEUM CO.                         3HPCO              6.7         7.7%     71.0      1.13    80.2   92.3%   86.9  (1.60)
MIDDLE BAY OIL CO., INC.                       MBOC               4.8        57.7%      1.3      2.71     3.5   42.3%    8.3   1.80
MIDLAND RESOURCES INC.                         MRIX               5.8        26.9%      4.4      3.58    15.8   73.1%   21.6  (0.50)
NATIONAL ENERGY GROUP, INC.                    NEGX              28.8        42.9%     12.1      3.17    38.4   57.1%   67.2   0.00

                                                 Average                     40.2%                              59.8%         (0.36)
                                                 Median                      42.9%                              57.1%         

- ------------------------------------------------------------------------------------------------------------------------------------
COST OF EQUITY:                                BUILT-UP METHOD
- ---------------                                ---------------

Rates derived from 1996 Ibbotson Study of annual returns
        Arithmetic means (1926-1995)

Risk Free Rate of Return                            7.08%
Long Term Treasury Bonds         

  Equity Risk Premium                        na    
  Small Stock Premium                              16.88%

Beta=                                        na
Additional Equity Risk                              0.00%
Cost of Equity                                     23.96%
                                             ============

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

COST OF DEBT:
- -------------

Corporate Baa bonds                                 8.36%
Additional Risk                                     0.00%
Tax Rate                                            34.0% effective rates are low for comparatives and TGX historically; depletion
                                                          contributes to the lower rate, federal rate is used as a proxy for an
                                                          effective rate
Tax-effected Cost of Debt                           5.52%
                                                 ============

- -----------------------------------------------------------------------------
FEDERAL RESERVE OF ST LOUIS SELECTED YIELDS AND INTEREST RATES:
DATE:                           June 28, 1996

Instrument                                        Rate
- ----------                                        ----

Prime Rate                                          8.25%
1 year Treasury Bills                               5.47%
Intermediate Treasury Notes                         6.86%
Long Term Treasury Bonds                            7.08%
Corp. Aaa                                           7.66%
Corp. Baa                                           8.36%
- ------------------------------------------------------------------------------------------------------------------------------------
</TABLE> 

<PAGE>
 
Client:      BOARD OF DIRECTORS - TGX CORPORATION
Property:    TGX CORPORATION
             FAIRNESS OPINION
Contract:    030816


<TABLE> 
<CAPTION> 


                                                                  Net Operating Loss Analysis
                                                                  ---------------------------
                                                                  (Thousands of Dollars)
<S>                                                               <C> 

Total amount of NOL Available to be used in 1995                             $19,530
Built in Gain Exclusion - expected to expire in the early part of 1997         8,181
                                                                             -------
Remaining NOL Available                                                       11,349

Annual Limitation due to change in control from Bankruptcy

        Value of TGX Corporation at change of ownership                      $19,254
        Long-term tax exempt rate                                              6.39%
                                                                             -------
        Annual Limitation                                                    $ 1,230

</TABLE> 

<TABLE> 
<CAPTION> 
                       
For Years Ending       
  Dec. 31, 1996 - 2000                                    Projected
Number of Months                         Period 1    Period 2    Period 3    Period 4    Period 5    Period 6    Period 7
                                         --------------------------------------------------------------------------------
<S>                                      <C>         <C>         <C>         <C>         <C>         <C>         <C> 

EBIT                                         (121)        84        660           743       831           925       1,027

NOL available beginning of period  11,349
NOL utilized                                    0         84        660           743       831           925       1,027
NOL available end of period                11,349     11,265     10,604         9,862     9,031         8,106       7,079

Tax rate                           34.00%
Tax benefit from NOL                            0         29        225           252       282           315         349

Present Value Factor                       0.9582     0.8535     0.7373        0.6370    0.5503        0.4754      0.4108

Present Value                                   0         24        166           161       155           150         143

Total Present Value                       $ 1,413

</TABLE> 


<TABLE> 
<CAPTION> 

For Years Ending       
  Dec. 31, 1996 - 2000                                    Projected
Number of Months                         Period 8    Period 9    Period 10   Period 11   Period 12   Period 13   Period 14
                                         ---------------------------------------------------------------------------------
<S>                                      <C>         <C>         <C>         <C>         <C>         <C>         <C> 

EBIT                                        1,136      1,252      1,377         1,510     1,653         1,806       1,969


NOL utilized                                1,136      1,230      1,230         1,230     1,230         1,022           0
NOL available end of period                 5,943      4,713      3,482         2,252     1,022            (0)         (0)


Tax benefit from NOL                          386        418        418           418       418           347           0

Present Value Factor                       0.3549     0.3066     0.2649        0.2288    0.1977        0.1708      0.1475

Present Value                                 137        128        111            96        83            59           0


Note:  Alternative Minimum Tax would reduce benefit of NOL; present value of taxes paid today for AMT would be an offset for
         future taxes payable, so it is really a present value offset.

       For the analysis AMT were not incorporated, this will only make the analysis more conservative, for the fairness opinion.

</TABLE> 

<PAGE>
 
Client:     BOARD OF DIRECTORS - TGX CORPORATION
Property:   TGX CORPORATION
            FAIRNESS OPINION
Contract:   030816


                           WORKING CAPITAL ANALYSIS
                           ------------------------


Working capital based on discussions with management, comparative companies and 
TGX's historical experience


        As of May 31, 1996

                Current Assets                  $3,857
                Current Liabilities             $2,533
                                                ------
                Working Capital                 $1,324

                Normal Working Capital            
                as a percent of revenues          5.0%

                1995 Revenues                   $4,597
                Normal Working Capital            $230  1995 Revenues X 5%
                
                Excess Working Capital          $1,094  Actual - Normal
                        Round                   $1,100



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