CROWN ENERGY CORP
SC 13D, 1997-10-10
DRILLING OIL & GAS WELLS
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<PAGE>
 
                                                             Document No. 175675

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                                 UNITED STATES
                      SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C. 20549

                                 SCHEDULE 13D

                   UNDER THE SECURITIES EXCHANGE ACT OF 1934


                           Crown Energy Corporation
                           ------------------------
                               (Name of Issuer)

                    Common Stock, par value $0.02 per share
                    ---------------------------------------
                        (Title of Class of Securities)

                                   228341301
                                   ---------
                                (CUSIP Number)

  Jay Mealey, Crown Energy Corporation, 215 South State, Suite 550, Salt Lake
  ---------------------------------------------------------------------------
                               City, Utah 84111
                               ----------------
(Name, Address and Telephone Number of Person Authorized to Receive Notices and
Communications)

                              September 30, 1997
                              ------------------
            (Date of Event which Requires Filing of this Statement)

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

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

NOTE:  Six copies of this statement, including all exhibits, should be filed
with the Commission.  See Rule 13d-1(a) for other parties to whom copies are to
be sent.

*The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter
disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).


Index to Exhibits on Page #9    Page 1 of 9 Pages               SEC 1746 (12-91)
<PAGE>
 
                                 SCHEDULE 13D


- -----------------------                                  ---------------------
  CUSIP NO. 228341301                                      PAGE 2 OF 9 PAGES
- -----------------------                                  ---------------------
 
- ------------------------------------------------------------------------------
      NAME OF REPORTING PERSON
 1    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
                          
              Enron Capital & Trade Resources Group

- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
 2                                                              (a) [_]
                                                                (b) [X]
                                                 
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3
 

- -------------------------------------------------------------------------------
      SOURCE OF FUNDS *
 4
              WC

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

- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 6    
              United States of America, State of Delaware

- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     7     
     NUMBER OF                 0
                          
      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      8    
                               1,021,500
     OWNED BY             
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     9     
    REPORTING                  0
                          
      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH         10    
                               1,021,500
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
11    
              1,021,500
      
- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
12                                                                 [ ] 
              
 
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
13    
              7%
      
- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
14
              CO
      
- ------------------------------------------------------------------------------
                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
         INCLUDE BOTH SIDES OF THE COVER PAGE, RESPONSES TO ITEMS 1-7
     (INCLUDING EXHIBITS) OF THE SCHEDULE, AND THE SIGNATURE ATTESTATION.
<PAGE>
 
                                 SCHEDULE 13D


- -----------------------                                  ---------------------
  CUSIP NO. 228341301                                      PAGE 3 OF 9 PAGES
- -----------------------                                  ---------------------
 
- ------------------------------------------------------------------------------
      NAME OF REPORTING PERSON
 1    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
                          
              Enron Corp.

- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
 2                                                              (a) [_]
                                                                (b) [X]
                                                 
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3
 

- -------------------------------------------------------------------------------
      SOURCE OF FUNDS*
 4
              WC

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

- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 6    
              United States of America, State of Oregon

- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     7     
     NUMBER OF                 0
                           
      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      8    
                               1,021,500
     OWNED BY             
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     9     
    REPORTING                  0
                          
      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH         10    
                               1,021,500
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
11    
              1,021,500
      
- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
12                                                                [ ]
               

- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
13    
              7%
      
- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
14
              CO
      
- ------------------------------------------------------------------------------
                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
         INCLUDE BOTH SIDES OF THE COVER PAGE, RESPONSES TO ITEMS 1-7
     (INCLUDING EXHIBITS) OF THE SCHEDULE, AND THE SIGNATURE ATTESTATION.
<PAGE>
 
ITEM 1.   SECURITY AND ISSUER.

This statement relates to the common stock, par value $0.02 per share (the
"Common Stock"), of Crown Energy Corporation, a Utah corporation (the "Issuer").
The address of the principal executive offices of the Issuer is 215 South State,
Suite 550, Salt Lake City, Utah, 84111.

ITEM 2.   IDENTITY AND BACKGROUND.

This statement is being filed by Enron Capital & Trade Resources Corp., a
Delaware corporation ("ECT"), and by Enron Corp., an Oregon corporation
("Enron"). ECT is a wholly owned subsidiary of Enron and is engaged primarily in
the business of purchasing natural gas, gas liquids and power through a variety
of contractual arrangements and marketing these energy products to local
distribution companies, electric utilities, cogenerators and both commercial and
industrial end-users. ECT also provides risk management services. Enron is an
integrated natural gas company that engages, primarily through subsidiaries, in
the gathering, transportation and wholesale marketing of natural gas, the
exploration for and the production of natural gas and crude oil, the production,
purchase, transportation and worldwide marketing and trading of natural gas
liquids, crude oil and refined petroleum products, the production and sale of
cogenerated electricity and steam and the purchasing and marketing of long-term
energy-related commitments. ECT and Enron are referred to herein as the
"Reporting Entities."

The address of the principal business and the principal office of ECT and Enron
is 1400 Smith, Houston, Texas 77002. Schedules 1 and 2 attached hereto set forth
certain additional information with respect to each director and each executive
officer of ECT and Enron. The filing of this statement on Schedule 13D shall not
be construed as an admission that Enron or ECT or any person listed on Schedule
1 or 2 hereto is, for the purposes of Section 13(d) or 13(g) of the Securities
Exchange Act of 1934, the beneficial owner of any securities covered by this
statement.

Neither of the Reporting Entities nor, to their knowledge, any person listed on
Schedule 1 or 2 hereto, has been, 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 and as a result of such proceeding was or is
subject to a judgment, decree or final order enjoining future violation of, or
prohibiting or mandating activities subject to, U.S. federal or state securities
laws or finding any violation with respect to such laws.

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

Under the terms of a Stock Purchase Agreement dated September 25, 1997, between
ECT and the Issuer (the "Stock Purchase Agreement"), ECT agreed to purchase from
the Issuer 45,000 shares of $10 Series A Preferred Stock of the Issuer (the
"Preferred Stock") for a cash purchase price of $450,000. The Preferred Stock
was issued effective September 30, 1997, the date upon which the Certificate of
the Voting Powers, Designations, Preferences and Relative Participating, Option
or other Special Rights, and Qualifications, Limitations and Restrictions
Thereof, of Series A Cumulative Convertible Preferred Stock (the "Certificate of
Rights and Designations") was filed with and approved by the Utah Secretary of
State. The source of the purchase price was working capital of Enron and ECT.

ITEM 4.   PURPOSE OF TRANSACTION.

The transactions described in Item 3 above occurred as a result of negotiations
with the Issuer. The Securities purchased by ECT were acquired for investment
purposes. The Stock Purchase Agreement provides for ECT to acquire an additional
455,000 shares of the Preferred Stock, plus a warrant (the "Warrant")
exercisable for a number of additional shares of the Issuers Common Stock, such
number being dependent upon the financial performance of the Issuer over a
period of five years from the date of the Stock Purchase Agreement.  ECT intends
to review its investment in the Issuer on an ongoing basis and, depending upon
the price of, and other market conditions relating to, the Common Stock,
subsequent developments affecting the Issuer, the Issuer's business and
prospects, other

                                       4
<PAGE>
 
investment and business opportunities available to ECT, general stock market and
economic conditions, tax considerations and other factors deemed relevant, may
decide to convert its Preferred Stock into Common Stock, exercise its Warrant,
or otherwise increase or decrease the size of its investment in the Issuer.

Other than as described above, neither of the Reporting Entities, nor, to their
knowledge, any person listed on Schedule 1 or 2 hereto, has any plan or proposal
that would result in any of the consequences listed in paragraphs (a) -(j) of
Item 4 of Schedule 13D.

ITEM 5.   INTEREST IN SECURITIES OF THE ISSUER.

ECT beneficially owns and has the power to vote and dispose of 1,021,500 shares
of Common Stock, representing approximately 7% of the shares of Common Stock
outstanding (determined in accordance with Rule 13d-3). Because ECT is a wholly
owned subsidiary of Enron, Enron may also be deemed to beneficially own such
shares. Enron disclaims beneficial ownership of all of such shares. All
1,021,500 shares are issuable upon conversion of Preferred Stock owned by ECT.
Each share of Preferred Stock is initially convertible at the option of the
holder thereof at any time for 22.7 shares of Common Stock (the "Conversion
Ratio").  Upon the occurrence of certain events described in the Stock Purchase
Agreement, the Conversion Ratio of the Preferred Stock may become 8.57. The
number of shares of Common Stock issuable on conversion or exercise of the
Preferred Stock is subject to adjustment pursuant to customary antidilution
provisions included in the terms of such securities. The rights and preferences
of the Preferred Stock are set forth in the Certificate of Rights and
Designations described in Item 3 above. Under the Stock Purchase Agreement the
Issuer may be obligated to issue to ECT, for additional consideration, an
additional number of shares of Preferred Stock and the Warrant described above.

Except as described herein, neither of the Reporting Entities, nor, to their
knowledge, any of the persons named in Schedule 1 or 2 hereto, has effected any
transactions in the Common Stock during the past sixty days.

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

As part of the Stock Purchase Agreement, the Issuer and ECT agreed that upon the
occurrence of certain conditions, ECT would purchase an additional 455,000
shares of Preferred Stock and the Warrant. The Issuer also agreed that ECT,
subject to compliance with applicable laws, shall have the right to appoint 20%
of the Issuer's board of directors at its discretion, in addition to appointing
a representative who may attend and be heard at all meetings of the Issuer's
board of directors.

Pursuant to the Certificate of Rights and Designations, the Issuer has agreed to
redeem 25%, 25%, and 50% of the Preferred Stock at ECT's option on the eighth,
ninth, and tenth anniversary of the issue of the Preferred Stock. Subject to
ECT's right of conversion, the Issuer may redeem the Preferred Stock at any time
for accrued and unpaid dividends plus a percentage of stated value as set forth
in the Certificate of Rights and Designations.

The Stock Purchase Agreement provides a right of first refusal for the Issuer in
the event that ECT sells any of its Preferred Stock or Common Stock issued upon
conversion of Preferred Stock.

The Stock Purchase Agreement also contains demand registration provisions,
obligating the Issuer to file a Registration Statement with the Securities and
Exchange Commission with respect to all shares of Common Stock held by or
issuable to ECT in connection with the transactions contemplated by the Stock
Purchase Agreement. The Stock Purchase Agreement also contains certain piggy-
back registration rights with respect to such shares.


                                       5
<PAGE>
 
The Warrant which ECT will receive upon satisfaction of further conditions by
the parties to the Stock Purchase Agreement will provide ECT the right to
purchase up to an additional 8% of the total outstanding shares of the Issuer's
common stock, in the event that the internal rate of return on ECT's investment
after five years (as defined in the Stock Purchase Agreement) is less than 39%
per year.  The Warrant has an exercise price of $0.01 per share and a term of
ten years.

Pursuant to the Certificate of Rights and Designations, the Issuer will not,
without the consent of the holders of at least 75% of the Preferred Stock, take
or fail to take certain actions with respect to the Crown Asphalt Ridge project
(as defined in the Stock Purchase Agreement).  Additionally, the Issuer will
not, without the consent of the holders of at least 75% of the Preferred Stock,
(i) alter the rights, preferences or privileges of the Preferred Stock; (ii)
authorize or issue any security having liquidation preferences or redemption,
voting or dividend rights senior to or on a parity with the Preferred Stock;
(iii) increase the number of shares of Preferred Stock which the Issuer shall
have the authority to issue; (iv) reclassify any of the Issuer's or any
subsidiary's securities; (v) acquire any material business by merger,
consolidation, stock or equity purchase, asset acquisition or otherwise (other
than businesses within the Issuer's or any subsidiary's existing business lines
with an aggregate purchase price of less than $5,000,000 (including assumption
of debt)); (vi) merge, consolidate, sell or dispose of all or substantially all
of the Issuer's or any subsidiary's assets or property, other than as provided
in the Certificate of Rights and Designations; (vii) otherwise engage in a
change in control event or fundamental corporate transaction; (viii) pay
dividends, redeem stock or make any other restricted payments, or permit any
subsidiary to pay dividends, redeem stock or make any other restricted payments,
to the holders of the Issuer's or such subsidiary's outstanding equity
securities (other than with respect to Preferred Stock pursuant to the terms of
the Issuer's Articles of Incorporation); (ix) amend the Issuer's or any
subsidiary's Articles of Incorporation, by-laws or other charter documents, or
any stock option or other stock compensation plan, to the extent that such an
amendment affects the legal or economic rights of the Preferred Stock; (x) allow
any subsidiary of the Issuer to issue securities to an entity or person other
than the Issuer or a wholly-owned direct or indirect subsidiary of the Issuer;
(xi) make any changes in the employment status of the person holding the
position of president of the Corporation; (xii) directly or indirectly make any
guarantees or otherwise become liable in any way with respect to the obligations
or liabilities of any person or entity, or permit any subsidiary to do the same,
except in the ordinary course of business; (xiii) mortgage, pledge or create a
security interest in, or permit any subsidiary to mortgage, pledge or create a
security interest in, all or any material proportion of the Issuer's or such
subsidiary's assets; (xiv) incur, create or assume, or permit any subsidiary to
incur, create or assume any indebtedness for borrowed money in excess of
$2,500,000 (not including any capitalized leases or other financing arrangements
with respect to certain leased equipment); (xv) change the Issuer's principal
business, enter into new lines of business or exit the current line of business,
or permit any subsidiary to do the same (the Issuer's current line of business
is asphalt manufacturing, production, refining, blending, modifying, storing,
transporting, marketing, and any other activities relating to the asphalt
industry); (xvi) enter into, materially amend or terminate, or make any material
waiver pursuant to or materially breach, any material contract; (xvii) increase
or decrease the size of the Board of Directors of the Issuer; (xviii)
voluntarily liquidate, dissolve or wind-up the Issuer or any subsidiary; (xix)
allow the commencement of an involuntary case or other proceeding against the
Issuer or any subsidiary seeking liquidation, reorganization or other relief
with respect to its debts under any applicable federal or state bankruptcy,
insolvency, reorganization or similar law now or hereafter in effect or seeking
the appointment of a custodian, receiver, liquidator, assignee, trustee,
sequestrator, or similar official of it or any substantial part of its property,
which involuntary case or other proceeding shall remain undismissed and
unstayed, or allow an order or decree approving or ordering any of the foregoing
to be entered and continued unstayed and in effect, for a period of ninety days;
(xx) commence a voluntary case or proceeding under any applicable federal or
state bankruptcy, insolvency, reorganization or other similar law or any other
case or proceeding to be adjudicated a bankrupt or insolvent or consent to the
entry of a decree or order for relief in respect of the Issuer or any subsidiary
in an involuntary case or proceeding under any applicable, federal or state
bankruptcy, insolvency, reorganization or other similar law or to the
commencement of any bankruptcy or insolvency case or proceeding against any of
them, or file a petition or answer or consent seeking reorganization or relief
under any applicable, federal or state law, or consent to the filing of such
petition or to the appointment of or taking possession by a custodian, receiver,



                                       6
<PAGE>
 
liquidator, assignee, trustee, sequestrator or similar official of the Issuer or
any subsidiary or any substantial part of its property or making assignment for
the benefit of creditors, or admit in writing an inability to pay their debts
generally as they become due, or take any action in furtherance of any such
action; and (xxi) consent to the sale, lease or other disposition of all or
substantially all of the assets of certain subsidiaries.

Contemporaneous with the Stock Purchase Agreement, ECT entered into a Right of
Co-Sale Agreement (the "Co-Sale Agreement") with Jay Mealey, a shareholder of
the Issuer (the "Shareholder").  Pursuant to the Co-Sale Agreement, the
Shareholder has agreed not to sell or otherwise dispose of any Common or
Preferred Stock of the Issuer for a period of five years from the date of the
Co-Sale Agreement, except in accordance with its provisions. The Co-Sale
Agreement provides for rights of co-sale for ECT in the event the Shareholder
receives a bona fide offer to purchase his shares of Common or Preferred Stock.
The Co-Sale Agreement does not apply to sales which do not involve at least (i)
50% of the Common and Preferred Stock owned by the Shareholder and (ii) more
than 50% of the outstanding Common Stock of the Issuer, including Common Stock
issuable upon conversion of outstanding Preferred Stock.

ITEM 7.   MATERIAL TO BE FILED AS EXHIBITS

Exhibit 1  Stock Purchase Agreement dated as of September 25, 1997 between the
           Issuer and ECT.

Exhibit 2  Certificate of Rights and Designations of the Preferred Stock, as
           filed and approved by the Utah Secretary of State on September 30,
           1997.

Exhibit 3  Warrant to purchase additional shares of Common Stock.

Exhibit 4  Right of Co-Sale Agreement


                                       7
<PAGE>
 
SIGNATURE

After reasonable inquiry and to the best knowledge and belief of the
undersigned, the undersigned certify that the information set forth in this
statement is true, complete and correct.


October 10, 1997            ENRON CAPITAL & TRADE RESOURCES CORP.

                            By:    /s/ PEGGY B. MENCHACA
                                   -----------------------
                                   Peggy B. Menchaca
                                   Vice President and Secretary

 
                            ENRON CORP.


                            By:    /s/ PEGGY B. MENCHACA
                                   -----------------------
                                   Peggy B. Menchaca
                                   Vice President and Secretary


                                       8
<PAGE>
 
                        INDEX TO SCHEDULES AND EXHIBITS

Schedule 1     Directors and Executive Officers of Enron Capital & Trade Corp.

Schedule 2     Directors and Executive Officers of Enron Corp.

Exhibit 1      Stock Purchase Agreement dated as of September 25, 1997 between
               the Issuer and ECT.

Exhibit 2      Certificate of Rights and Designations of the Preferred Stock, as
               filed and approved by the Utah Secretary of State on September
               30, 1997.

Exhibit 3      Warrant to purchase additional shares of Common Stock.

Exhibit 4      Right of Co-Sale Agreement.



                                       9
<PAGE>
 
                                  SCHEDULE I
                       DIRECTORS AND EXECUTIVE OFFICERS
                          ENRON CAPITAL & TRADE CORP.
 
 
NAME AND
BUSINESS ADDRESS         CITIZENSHIP     POSITION AND OCCUPATION
- ----------------         -----------     -----------------------
John J. Esslinger          U.S.A.        Director
1400 Smith Street                        Vice Chairman and Managing
Houston, Texas 77002                     Director - ECT North America
 
Mark E. Haedicke           U.S.A.        Director
1400 Smith Street                        Managing Director, Legal
Houston, Texas 77002
 
Kenneth D. Rice            U.S.A.        Director
1400 Smith Street                        Chairman, Chief Executive Officer
Houston, Texas 77002                     and Managing Director - ECT 
                                         North America
 
Lou L. Pai                 U.S.A.        Chairman, President, Chief
1400 Smith Street                        Executive Officer, and Managing
Houston, Texas 77002                     Director - Enron Energy Services
 
Mark A. Frevert            U.S.A.        President and Managing Director -
1400 Smith Street                        ECT Europe, Managing Director,
Houston, Texas 77002                     International
 
Kevin P. Hannon            U.S.A.        President and Managing Director -
1400 Smith Street                        ECT Commodity and Trade Services
Houston, Texas 77002
 
Ashok Rao                  U.S.A.        President, Chief Operating
1400 Smith Street                        Officer and Managing Director -
Houston, Texas 77002                     Enron Energy Services
 
J. Clifford Baxter         U.S.A.        Managing Director
1400 Smith Street
Houston, Texas 77002
 
William O. Butler          U.S.A.        Managing Director
1400 Smith Street
Houston, Texas 77002
 
John B. Echols, Jr.        U.S.A.        Managing Director
1400 Smith Street
Houston, Texas 77002
 
Gene E. Humphrey           U.S.A.        Managing Director, Finance 
1400 Smith Street
Houston, Texas 77002 
 


                                      10
<PAGE>
 
Amanda K. Martin           U.S.A.        Managing Director 
1400 Smith Street
Houston, Texas 77002
 
Jere C. Overdyke, Jr.      U.S.A.        Managing Director
1400 Smith Street
Houston, Texas 77002
 
Rebecca C. Carter          U.S.A.        Vice President and Chief Control
1400 Smith Street                        Officer
Houston, Texas 77002





                                      11
<PAGE>
 
                                  SCHEDULE 2
                       DIRECTORS AND EXECUTIVE OFFICERS
                                  ENRON CORP.
 
NAME AND
BUSINESS ADDRESS            CITIZENSHIP        POSITION AND OCCUPATION
- ----------------            -----------        -----------------------
 
Robert A. Belfer               U.S.A.          Director
767 5th Avenue, 46th Floor                     Chairman, President
New York, NY  10153                            Chief Executive Officer  
                                               Belco Oil & Gas Corp.
 
Norman P. Blake, Jr.           U.S.A.          Director USF&G Corporation
USF&G Corporation                              Chairman, President and CEO,
6225 Smith Ave. LA0300                         USF&G Corporation
Baltimore, MD 21209
 
Ronnie C. Chan                 U.S.A.          Director
Hang Lung Development                          Chairman of Hang Lung
Company Limited                                Development Group
28/F, Standard Chartered
  Bank Building
4 Des Vouex Road Central
Hong Kong
 
John H. Duncan                 U.S.A.          Director
5851 San Felipe, Suite 850                     Investments
Houston, TX 77057
 
Joe H. Foy                     U.S.A.          Director
404 Highridge Dr.                              Retired Senior Partner,
Kerrville, TX 78028                            Bracewell & Patterson, L.L.P.
 
Wendy L. Gramm                 U.S.A.          Director
P. O. Box 39134                                Former Chairman,
U.S. Washington, D.C.  20016                   Commodity Futures Trading 
                                               Commission
 
Ken L. Harrison                U.S.A.          Director
One World Trade Center                         Chairman, Chief Executive Officer
121 SW Salmon Street                           and President, Portland General
Portland, Oregon 97204                         Electric Company
 
Robert K. Jaedicke             U.S.A.          Director
Graduate School of Business                    Professor (Emeritus), Graduate
Stanford University                            School of Business, Stanford
Stanford, CA  94305                            University
 
Charles A. LeMaistre           U.S.A.          Director
13104 Travis View Loop                         President (Emeritus),
Austin, Texas  78732                           University of Texas
                                               M.D. Anderson Cancer Center 

                                      12
<PAGE>
 
Jerome J. Meyer                U.S.A.          Director
26600 SW Parkway, Bldg. 63                     Chairman, Chief Executive Officer
P.O. Box 1000                                  Tektronix, Inc. 
Wilsonville, OR 97070-1000
 
John A. Urquhart               U.S.A.          Director and Vice Chairman,
John A. Urquhart Associates                    Enron Corp.,
111 Beach Road                                 President, John A. Urquhart
Fairfield, CT  06430                           Associates
 
John Wakeham                   U.K.            Director
Pinglestone House                              Former U.K. Secretary of State
Old Alresford                                  for Energy and Leader of the 
Hampshire S024 9TB                             Houses of Commons and Lords 
                                               United Kingdom
 
Charls E. Walker               U.S.A.          Director
Walker & Walker, LLC                           Chairman, Walker & Walker, LLC
10220 River Road, Ste. 105
Potomac, Maryland 20854
 
Bruce G. Willison              U.S.A.          Director
4900 Rivergrade Rd.                            President and Chief Operating
Irwindale, CA  91706                           Officer H.F. Ahmanson Company
 
Herbert S. Winokur, Jr.        U.S.A.          Director
Winokur & Associates, Inc.                     President, Winokur & Associates,
30 East Elm St.                                Inc.
Greenwich, Ct  06830
 
Kenneth L. Lay                 U.S.A.          Director, Chairman and Chief
1400 Smith Street                              Executive Officer
Houston, Texas 77002
 
Jeffrey K. Skilling            U.S.A.          Director, President and Chief
1400 Smith Street                              Operating Officer
Houston, Texas 77002
 
J. Clifford Baxter             U.S.A.          Senior Vice President, Corporate
1400 Smith Street                              Development
Houston, Texas 77002
 
Richard A. Causey              U.S.A.          Senior Vice President and Chief
1400 Smith Street                              Accounting and Information
Houston, Texas 77002                           Officer
 
Edmund P. Segner, III          U.S.A.          Executive Vice President and 
1400 Smith Street                              Chief of Staff
Houston, Texas 77002


                                      13
<PAGE>
 
James V. Derrick, Jr.          U.S.A.          Senior Vice President and General
1400 Smith Street                              Counsel
Houston, Texas 77002
 
Andrew S. Fastow               U.S.A.          Senior Vice President, Finance
1400 Smith Street
Houston, Texas 77002
 
Stanley C. Horton              U.S.A.          Chairman and Chief Executive
1400 Smith Street                              Officer, Enron Gas Pipeline Group
Houston, Texas 77002
 
Rebecca P. Mark                U.S.A.          Chairman and Chief Executive
1400 Smith Street                              Officer, Enron International,Inc.
Houston, Texas 77002
 
Thomas E. White                U.S.A.          Chairman and Chief Executive
1400 Smith Street                              Officer, Enron Ventures Corp.
Houston, Texas 77002
 
Rodney L. Gray                 U.S.A.          Chairman, President and Chief
1400 Smith Street                              Executive Officer, Enron Global
Houston, Texas 77002                           Power & Pipelines L.L.C.


                                      14

<PAGE>
 
                                                                       EXHIBIT 1
                                                             DOCUMENT NO. 165386

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



                           STOCK PURCHASE AGREEMENT



                                 BY AND AMONG

                     ENRON CAPITAL & TRADE RESOURCES CORP.

                                      AND

                           CROWN ENERGY CORPORATION



                       DATED AS OF SEPTEMBER 25, 1997



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                           STOCK PURCHASE AGREEMENT


     This Stock Purchase Agreement (the "Agreement") is made this 25th day of
September, 1997, by and between Crown Energy Corporation ("Crown" or the
"Corporation") and Enron Capital & Trade Resources Corp. ("Enron" or the
"Investor"). Certain capitalized terms not defined in the text of this Agreement
are defined in Appendix A to this Agreement.

     WHEREAS, Crown and Enron desire that Enron make an investment in the
Corporation and receive in consideration of such investment certain equity
securities of the Corporation upon the terms and conditions contained in this
Agreement;

     WHEREAS, Crown Asphalt Corporation, a wholly-owned subsidiary of Crown, has
entered into the Operating Agreement, and is required to make certain
contributions of cash and assets to Crown Asphalt Ridge pursuant to the
Operating Agreement;

     WHEREAS, it is the understanding of the parties hereto that part of the
funds invested and to be invested hereby are to be used by Crown Asphalt
Corporation to fund its obligations under the Operating Agreement; and

     WHEREAS, each of the parties hereto is making certain representations,
warranties, covenants and indemnities herein to induce the other to enter into
this Agreement;

     NOW, THEREFORE, in consideration of the respective representations,
warranties, covenants and indemnities contained herein, Crown and Enron hereby
agree as follows:

                                  ARTICLE I.
                            ISSUANCE OF SECURITIES

     1.1  AUTHORIZATION AND ISSUANCE OF PREFERRED STOCK.  The Corporation will
authorize the issuance and sale to the Investor of certain preferred stock and
warrants in two separate tranches ("Tranche 1" and "Tranche 2"), in the
quantities set forth on Schedule 1.1.  The preferred stock issued in Tranches 1
and 2 (sometimes referred to as Tranche 1 Preferred Stock or Tranche 2 Preferred
Stock, respectively, and sometimes collectively referred to as the "Preferred
Stock") shall have the powers and qualifications as described in the "Series A
Preferred Stock Designation of Rights and Preferences" attached hereto as
Exhibit A.  The warrants (the "Warrants"), all of which are to be issued in
Tranche 2, shall have the powers and qualifications as described in the Warrant
Agreement attached hereto as Exhibit B.  Subject to the terms and conditions set
forth herein, the Corporation agrees to sell to the Investor, and the Investor
agrees to purchase from the Corporation, the number of shares of Preferred Stock
and Warrants set forth on Schedule 1.1, at the purchase prices set forth therein
(the "Tranche 1 Purchase Price" and the "Tranche 2 Purchase Price",
respectively; collectively, the "Purchase Price").  The Tranche 1 Purchase Price
shall be payable by

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the Investor to the Corporation in immediately available funds on the First
Closing  Date (as defined hereinafter). The Tranche 2 Purchase Price shall be
payable by the Investor to the Corporation in immediately available funds on the
Second Closing Date (as defined hereinafter).

     1.2  FIRST CLOSING.  The first closing (the "First Closing") and the second
closing (the "Second Closing") of the purchase and sale of Preferred Stock and
Warrants provided for in this Agreement shall take place at the offices of
Liddell, Sapp, Zivley, Hill & LaBoon, L.L.P., 3500 Texas Commerce Tower,
Houston, Texas.  The First Closing shall take place on September 26, 1997 (the
"First Closing Date"), or at such other time and place as the parties hereto
shall mutually agree. The Second Closing shall take place no later than 10
business days after the satisfaction of the conditions to the Second Closing
specified in Article V hereof.  Except as specifically provided herein, failure
to consummate the purchases and sales provided for in this Agreement on the date
and time and at the place determined pursuant to this Section 1.2 shall not
result in the termination of this Agreement, and shall not relieve any parties
to this Agreement of any obligation hereunder.

     1.3  CROSS RECEIPT.    At the First Closing and the Second Closing, the
Corporation and the Investor shall each execute and deliver a cross receipt
acknowledging the receipt of the Tranche 1 Purchase Price and the Tranche 2
Purchase Price, respectively, and the Preferred Stock, respectively.

     1.4  USE OF PROCEEDS.  The Tranche 1 and Tranche 2 Purchase Prices shall be
devoted to development of the Crown Asphalt Ridge project described herein and
working capital needs of the Corporation, in accordance with the projections and
plans disclosed to the Investor by the Corporation  in connection herewith.

     1.5  STRUCTURING FEE.  On the First Closing Date, the Corporation shall pay
a structuring fee to ECT Securities Corp. of $150,000 (the "Structuring Fee").

     1.6  OTHER DOCUMENTS TO BE DELIVERED ON THE FIRST CLOSING  DATE.  The
Corporation shall deliver to the Investor indicated the following at the First
Closing:

               (A) Certificates representing the shares of Tranche 1 Preferred
     Stock or Tranche 2 Preferred Stock, respectively, purchased by the Investor
     pursuant hereto;

               (B) The Articles of Incorporation of the Corporation, as amended
     and in effect as of the applicable Closing  Date, certified by the
     Secretary of State of the State of Utah;

               (C) Certificates, as of the most recent practicable dates prior
     to the applicable Closing, as to the corporate good standing of the
     Corporation, issued by the Secretary of State of the State of Utah;

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               (D) A certificate of the Secretary of the Corporation attesting
     to the incumbency of the Corporation's officers, the authenticity of the
     resolutions authorizing the transactions contemplated by this Agreement,
     and the authenticity and continuing validity of the charter documents and
     by-laws of the Corporation;

               (E) Executed copy of this Agreement.


                                  ARTICLE II.
                      REPRESENTATIONS OF THE CORPORATION

     The Corporation represents and warrants to the Investor as follows:

     2.1  ORGANIZATION, EXISTENCE AND GOOD STANDING.  The Corporation is a
corporation duly organized, validly existing and in good standing under the laws
of the State of Utah and has all requisite corporate power and authority to
carry on its business as now being conducted and as proposed to be conducted,
and is duly qualified as a foreign corporation to do business and is in good
standing in each other jurisdiction in which the nature of the business
conducted by it makes such qualification necessary, except where the failure to
so qualify would not have a Material Adverse Effect.

     2.2  CAPITALIZATION.

               (A) The authorized capital stock of the Corporation consists of
     50,000,000 shares of Common Stock, par value $0.02 per share, 11,572,141
     shares of which are issued and outstanding, and 500,000 shares of Preferred
     Stock, none of which are issued and outstanding.  All such issued shares
     have been duly issued in accordance with applicable laws, including federal
     and state securities laws. All of the outstanding shares of capital stock
     of the Corporation and each Subsidiary have been duly authorized and are
     validly issued, fully paid and nonassessable.  All dividends and other
     distributions declared with respect to the issued and outstanding shares of
     the capital stock of the Corporation and each Subsidiary have been paid or
     distributed.

               (B) The certificates representing the Preferred Stock to be
     delivered to the Investor at the First Closing  and at the Second Closing,
     and the signatures on the endorsements thereof or stock powers delivered
     therewith, will be valid and genuine.  The stock certificates,
     endorsements, stock powers and other documents to be delivered to the
     Investor on the First Closing  Date and on the Second Closing Date will
     transfer to and vest in the Investor good, valid and indefeasible title to
     the Preferred Stock, free and clear of any adverse claims of any other
     person, including without limitation any Encumbrance.

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               (C) No stock transfer taxes or other similar taxes are or will be
     required to be paid by the Investor with respect to the transfer of the
     Preferred Stock as provided herein.

               (D) Except as provided in clause (A) above or on Schedule 2.2, as
     of the First Closing  Date, there will be no outstanding

               (1)  shares of Common Stock or Preferred Stock ("Capital Stock")
                    or voting securities of the Corporation;

               (2)  securities of the Corporation convertible into or
                    exchangeable for shares of Capital Stock or voting
                    securities of the Corporation; or

               (3)  options or other rights to acquire from the Corporation, or
                    other obligations of the Corporation to issue, any Capital
                    Stock, voting securities, or securities convertible into or
                    exchangeable for Capital Stock or voting securities of the
                    Corporation.

               (E) There are no outstanding obligations of the Corporation to
     repurchase, redeem, or otherwise acquire any existing securities of the
     Corporation.

     2.3  SUBSIDIARIES.

               (A) Except as set forth on Schedule 2.3, the Corporation (i) has
     no Subsidiaries, (ii) has no Affiliates, (iii) is not a partner in any
     partnerships, and (iv) does not control or have any ownership interest in
     any other entity.

               (B) Each Subsidiary and Affiliate listed on Schedule 2.3 is duly
     organized and validly existing under all applicable laws and has all
     necessary power and authority to own or lease and operate its properties
     and assets, and to perform all obligations under the agreements and
     instruments to which it is a party or by which it is bound.  Each such
     Subsidiary and Affiliate is duly qualified to do business and is in good
     standing under the laws of each state or other jurisdiction with respect to
     which the properties and assets owned or leased and operated by it or the
     nature of the business conducted by it makes such qualification necessary.

     2.4  AUTHORITY.  The Corporation has full corporate power and authority to
execute and deliver this Agreement and to consummate the transactions
contemplated hereby.  The execution and delivery of this Agreement and the
consummation of the transactions contemplated hereby have been duly and validly
authorized and approved by the board of directors of the Corporation, and no
other corporate proceedings on the part of the Corporation are necessary to
authorize this Agreement or the consummation of the transactions contemplated
hereby.  This Agreement has been duly and validly executed and delivered by the
Corporation, and this Agreement constitutes the legal, valid

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and binding agreement of the Corporation enforceable against the Corporation in
accordance with its terms, subject to (i) bankruptcy, insolvency and other
similar laws now or hereafter affecting the enforcement of the rights of
creditors generally and (ii) general principles of equity.

     2.5  MATERIAL CONTRACTS.

               (A) Except as disclosed in Schedule 2.5 or any other Schedule
     hereto, neither the Corporation nor any Subsidiary is a party to, nor is it
     bound by,

               (1)  any lease of real property;

               (2)  any lease of personal property providing for annual rentals
                    of $10,000 or more;

               (3)  any agreement for the purchase of materials, supplies,
                    goods, services, equipment, or other assets that provides
                    for either (i) annual payments by the Corporation or any
                    Subsidiary of $10,000 or more, or (ii) aggregate payments by
                    the Corporation or any Subsidiary of $50,000 or more;

               (4)  any sales, distribution, or other similar agreements
                    providing for the sale by the Corporation or any Subsidiary
                    of materials, supplies, goods, services, or other assets
                    that provides for either (i) annual payments to the
                    Corporation or any Subsidiary of $10,000 or more or (ii)
                    aggregate payments to the Corporation or any Subsidiary of
                    $50,000 or more;

               (5)  any partnership, joint venture, limited liability company,
                    or other similar agreement or arrangement (including any
                    related management agreements);

               (6)  any agreement relating to the acquisition or disposition of
                    any business (whether by merger, sale of stock, sale of
                    assets, or otherwise);

               (7)  any agreement relating to indebtedness for borrowed money or
                    the deferred purchase price of property (in either case,
                    whether incurred, assumed, guaranteed, or secured by any
                    asset), except any such agreement with an aggregate
                    principal amount not exceeding $50,000 and which may be
                    prepaid on not more than thirty (30) days notice without the
                    payment of any penalty;

               (8)  any license, franchise, or similar agreement;

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               (9)  any management, agency, marketing, or other similar
                    agreement;

               (10) any consulting or advisory agreements;

               (11) any agreement that limits the freedom of the Corporation or
                    any Subsidiary to compete in any line of business or with
                    any Person or in any area or which would so limit the
                    freedom of the Corporation or any Subsidiary after the First
                    Closing  Date;

               (12) any other agreement, commitment, arrangement, or plan not
                    made in the Ordinary Course of Business that is material to
                    the Corporation or any Subsidiary.

               (B) Each agreement, commitment, arrangement, or plan disclosed in
     any Schedule to this agreement or required to be disclosed pursuant to this
     Section 2.5 is a valid and binding agreement of the Corporation or the
     applicable Subsidiary and is in full force and effect, and neither the
     Corporation, the applicable Subsidiary, nor any other party to such
     agreement is in default or breach in any material respect under the terms
     of such agreement, contract, plan, lease, arrangement, or commitment.

     2.6  NO VIOLATION.  Neither the execution and delivery of this Agreement,
the consummation of the transactions contemplated hereby, nor the compliance by
the Corporation or any Subsidiary with any of the provisions hereof will (i)
conflict with or result in any breach of any provision of the Articles of
Incorporation, Bylaws or other Organizational Document of the Corporation or any
Subsidiary, (ii) result in a violation or breach of or constitute (with or
without due notice or lapse of time or both) a default (or give rise to any
right of termination, cancellation or acceleration) under, or require any
consent or other action by any Person as a result of, any of the terms,
conditions or provisions of any note, contract, agreement, commitment, bond,
mortgage, indenture, license, pledge agreement or other instrument or obligation
to which the Corporation or any Subsidiary is a party or by which the
Corporation or any Subsidiary may be bound, or (iii) violate any law,
regulation, judgment, order, writ, injunction or decree applicable to the
Corporation or any Subsidiary.

     2.7  DEBT.  Schedule 2.7 correctly sets forth all debts of the Corporation
and any Subsidiary in excess of $10,000 outstanding on the First Closing Date
and the Second Closing Date, as applicable.

     2.8  COMPLIANCE WITH LAWS.

               (A) Except as set forth on Schedule 2.8, and except for any
     noncompliance the result of which would not result in any Material Adverse
     Effect on the Corporation or any Subsidiary, (i) the Corporation and any
     Subsidiaries are, and at all times during the five-year

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     period prior to the date hereof have been, in compliance with all Legal
     Requirements (including without limitation those pertaining to zoning,
     occupational safety and health practices, and water and air pollution and
     other environmental matters) applicable to them or to the ownership of
     their assets or the operation of their business, and (ii) neither the
     Corporation nor any Subsidiary has any basis to expect, nor has received,
     during the five-year period prior to the date hereof, any Order, notice, or
     other communication from any Governmental Authority including but not
     limited to those administering or enforcing the Occupational Safety and
     Health Act of 1970, as amended, or any Environmental Law, of any alleged,
     actual, or potential violation and/or failure to comply with any such Legal
     Requirement, or of any alleged, actual, or potential obligation to
     undertake or bear the cost of remedial action at any property now owned or
     previously owned or leased by the Corporation or any of the Subsidiaries or
     to which hazardous materials generated by the Corporation or any of the
     Subsidiaries may have been transported.

               (B) Set forth on Schedule 2.8 are all the Governmental
     Authorizations held or to be applied for by the Corporation and any of the
     Subsidiaries on the date hereof, which constitute all of the Governmental
     Authorizations necessary to permit the Corporation or any of the
     Subsidiaries to own, operate, use, and maintain their assets in the manner
     in which they are now operated and maintained and to conduct their
     businesses as now being conducted or as intended to be conducted.  All
     required filings with respect to such Governmental Authorizations have been
     or will be timely made and all required applications for renewal thereof
     have been or will be timely filed.  With respect to those already obtained,
     all such Governmental Authorizations are in full force and effect; with
     respect to those to be applied for, to the best of the Corporation and any
     Subsidiary's Knowledge, there is no reason to believe that such
     Governmental Authorizations will not be issued in due course and in a
     timely fashion.  All Governmental Authorizations which would normally have
     been issued or applied for at this stage in the development of a project of
     the type described in Schedule 1.4 have been so issued or applied for, and
     there are no Proceedings pending or threatened that seek the revocation,
     cancellation, suspension, or adverse modification thereof.

          2.9  TITLE TO PROPERTIES. [Intentionally deleted.]

          2.10 REAL PROPERTY.  Neither the Corporation nor any Subsidiary owns
any real property.  The Corporation has previously provided or made available to
the Investor true, correct and complete copies of all contracts, agreements,
mortgages, concessions, leases and commitments relating to or affecting real
property or any interests therein, including leasehold interests, to which the
Corporation or any of its Subsidiaries is a party or by which the Corporation or
any of its Subsidiaries or any property of the Corporation or any of its
Subsidiaries is in any way bound or affected, together with all amendments and
supplements thereto and modifications thereof.  All such contracts, agreements,
mortgages, concessions, leases, commitments, amendments, supplements and
modifications are legally valid and binding and in full force and effect, and
there are no defaults thereunder.  Neither the Corporation nor any of the
Subsidiaries purports to have any leasehold or other interest in real property
except as described in Schedule 2.10.  Each of the Corporation and the

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Subsidiaries has and will have the right to quiet enjoyment of all real property
leased to it for the full term of each lease and any renewal option related
thereto, and no leasehold or other interest of the Corporation or any of the
Subsidiaries in real property is or will be subject or subordinate to any
Encumbrance whether or not the same constitutes a lien or renders the title to
such real property unmarketable, except as described on Schedule 2.10.  None of
the rights of the Corporation or any of the Subsidiaries under any such
leasehold or other interest in real property will be impaired by the
consummation of the transactions contemplated by this Agreement, and all of such
rights will be enforceable by the Corporation and the Subsidiaries after the
First Closing  without the consent or agreement of any other party except for
consents and agreements specifically described on Schedule 2.10.

     2.11 PERSONAL PROPERTY.  Except as disclosed in the Schedules or in
this Agreement, there is no equipment, other tangible personal property, or
other interests either owned or leased by the Corporation or any of the
Subsidiaries with an individual value in excess of ten thousand dollars
($10,000).  The Corporation and any Subsidiaries own all the properties and
assets (real, personal and mixed, tangible and intangible) reflected as owned in
the books and records of the Corporation or any of the Subsidiaries, including,
but not limited to, all the properties and assets reflected in the Balance Sheet
(as that term is defined in Section 2.20) except for personal property sold
since the date of the Balance Sheet in the Ordinary Course of Business.  The
Corporation has previously provided or made available to the Investor true,
correct and complete copies of all contracts, agreements, mortgages, leases and
commitments relating to or affecting any interest in tangible personal property
to which the Corporation or any of the Subsidiaries is a party or by which the
Corporation or any of the Subsidiaries or any property of the Corporation or any
of the Subsidiaries is in any way bound or affected, together with all
amendments and supplements thereto and modifications thereof.  All such
contracts, agreements, mortgages, leases, commitments, amendments, supplements
and modifications are legally valid and binding and in full force and effect,
and there are no material defaults thereunder.  Copies of all such contracts,
agreements, mortgages, leases, commitments, amendments, supplements and
modifications thereof have provided or made available to the Investor.  No
leasehold or other interest of the Corporation or any of the Subsidiaries in
tangible personal property is subject or subordinate to any Encumbrance, whether
or not the same constitutes a lien or renders the title to such tangible
personal property unmarketable. None of the rights of the Corporation or any of
the Subsidiaries under any such leasehold or other interest in tangible personal
property will be impaired by the consummation of the transactions contemplated
by this Agreement, and all of such rights will be enforceable by the Corporation
and the Subsidiaries after the First Closing  without the consent or agreement
of any other party.

     2.12 CONDITION OF PROPERTY.  All of the personal property and fixtures of
the Corporation or any Subsidiary is in sound operating condition and repair,
normal wear and tear excepted, with the exception of such property that is
obsolete or surplus and except where failure to so maintain could not cause a
Material Adverse Effect.

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     2.13 NO PENDING LITIGATION OR PROCEEDINGS.  Neither the Corporation nor
any Subsidiary is a party to, nor to the Knowledge of the Corporation or any
Subsidiary has the Corporation or any Subsidiary been threatened by any suits,
actions, claims, investigations by Governmental Authorities or legal,
administrative or arbitrational proceedings.  Neither the Corporation nor any
Subsidiary nor any of their respective officers or directors know of any basis
or grounds for any such suit or proceeding.  There are no outstanding orders,
judgments, writs, injunctions or decrees of any court, government agency or
arbitrational tribunal against or affecting the Corporation, its Subsidiaries,
or their respective Properties, assets or business.

     2.14 TAXES. The Corporation and any Subsidiaries have filed or caused to be
filed on a timely basis all Tax Returns that are or were required to be filed by
or with respect to any of them, either separately or as a member of a group of
corporations, pursuant to the Legal Requirements of each Governmental Authority
with taxing power over them or their assets.  The Corporation has delivered or
made available to Investor copies of all such Tax Returns filed since 1995.  The
Corporation and any Subsidiaries have paid, or made provision for the payment
of, all Taxes that have or may have become due pursuant to those Tax Returns, or
otherwise.  None of the United States federal and state income Tax Returns of
the Corporation and each of the Subsidiaries subject to such Taxes have been
audited by the Internal Revenue Service or relevant state tax authorities. No
adjustments to the United States federal income tax returns filed by the
Corporation or any of the Subsidiaries or any group of corporations including
the Corporation or any of the Subsidiaries for all taxable years since 1995 have
been made or filed.  None of the Corporation or any of the Subsidiaries has
given or been requested to give waivers or extensions (or is or would be subject
to a waiver or extension given by any other entity) of any statute of
limitations relating to the payment of Taxes of the Corporation or any of the
Subsidiaries or for which the Corporation or any of the Subsidiaries may be
liable.  The charges, accruals and reserves with respect to Taxes on the
respective books of the Corporation and each of the Subsidiaries are adequate
(determined in accordance with GAAP) and are at least equal to that entity's
liability for Taxes. There exists no proposed tax assessment against the
Corporation or any of the Subsidiaries.  No consent to the application of
Section 341(f)(2) of the Code has been filed with respect to any property or
assets held or acquired or to be acquired by the Corporation or any of the
Subsidiaries.  All Taxes that the Corporation or any of the Subsidiaries is or
was required by law to withhold or collect have been duly withheld or collected
and, to the extent required, have been paid to the proper Governmental Body or
other Person.  All Tax Returns filed by the Corporation or any of the
Subsidiaries are true, correct and complete.  There is no tax sharing agreement
that will require any payment by the Corporation or any of the Subsidiaries
after the date of this agreement.

     2.15 PATENTS, TRADEMARKS AND OTHER RIGHTS.

               (A) The term "Intellectual Property Assets" shall include the
     names the Corporation and any Subsidiaries, all fictitious business names,
     trade names, brand names, registered and  unregistered trademarks, service
     marks and applications (collectively, "Marks"), all patents and patent
     applications (collectively, "Patents"), all copyrights in both published
     works and unpublished works (collectively, "Copyrights"), and all
     inventions,

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     processes, formulas, patterns, designs, know-how, trade secrets,
     confidential information, software, technical information, process
     technology, plans, drawings and blue prints (collectively, "Trade Secrets")
     owned, used or licensed by the Corporation or any of the Subsidiaries as
     licensee or licensor.

               (B) Except for any license implied by the sale of a product,
     Schedule 2.15 sets forth an accurate and complete listing and summary
     description, including any royalties paid or received by the Corporation or
     any Subsidiary, of all agreements relating to the Intellectual Property
     Assets to which the Corporation or any Subsidiary is a party.  There are no
     outstanding or threatened disputes or disagreements with respect to any
     such agreement.

               (C) The Intellectual Property Assets are all those necessary for
     the operation of the Corporation's and the Subsidiaries' businesses as they
     are currently conducted or as reflected or proposed in the business plan
     given to the Investor.

               (1)  The Corporation and the Subsidiaries are the owners or
                    licensees of all right, title and interest in and to each of
                    the Intellectual Property Assets free and clear of all
                    Encumbrances and except as set forth in Schedule 2.15 have
                    the right to use without payment to a third party all the
                    Intellectual Property Assets.

               (2)  No employee of the Corporation or any Subsidiary has entered
                    into any agreement which restricts or limits in any way the
                    scope or type of work in which the employee may be engaged
                    or requires the employee to transfer, assign or disclose
                    information concerning his work to anyone other than the
                    Corporation or a Subsidiary.

               (D) The Corporation and the Subsidiaries have no Knowledge of, or
     any reason to suspect the existence of, any intellectual property or other
     rights of any other Person which would be infringed, interfered with or
     otherwise violated in pursuing the business of the Corporation as
     contemplated by this Agreement.

               (1)  Neither the Corporation nor any Affiliate or Subsidiary owns
                    or controls any intellectual property, other than those
                    rights under the Guymon License, which would be necessary or
                    beneficial to pursuing the business of the Corporation as
                    contemplated by this Agreement, and if the Corporation or
                    any Affiliate or Subsidiary does now or hereafter own or
                    control any such intellectual property rights, then the
                    Corporation or such Affiliate or Subsidiary shall grant to
                    Crown Asphalt Ridge such of those rights as are necessary or
                    beneficial to pursuing the business of Crown Asphalt Ridge.


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               (2)  The Corporation and any Affiliates and Subsidiaries have no
                    Knowledge of any potentially interfering patent or patent
                    application of any third party.  None of the products
                    manufactured and sold, nor any processes or know-how used or
                    to be used, by the Corporation or any Subsidiary, including
                    without limitation the technology covered by the Guymon
                    License, infringe or are alleged to infringe any patent or
                    other proprietary right of any other person.  The Guymon
                    License is valid and has not been terminated and no party to
                    the Guymon License is currently in material breach of that
                    license and neither the Corporation nor any Affiliate or
                    Subsidiary of the Corporation has any reason to suspect that
                    any party to that license will materially breach that
                    license at any future date.

               (3)  Neither the Corporation nor any Affiliate or Subsidiary has
                    Knowledge of or reason to suspect that U.S. Patent No.
                    4,968,412 is invalid or unenforceable.

               (4)  The Corporation and its Affiliates and Subsidiaries, now and
                    since January 20, 1989, qualify as a small business concern
                    as defined in the regulations of the Small Business
                    Administration in 13 C.F.R. part 121 (a "Small Business
                    Concern"), and the Corporation, including its Affiliates and
                    Subsidiaries, now and since January 20, 1989, has no more
                    than five hundred (500) employees; furthermore, no
                    sublicense or other rights under the Guymon License have
                    heretofore been granted, including any options or contingent
                    interests, to any entity that is not a Small Business
                    Concern.  Neither the Corporation nor any Affiliate or
                    Subsidiary has any reason to believe that any rights under
                    U.S. Patent No. 4,968,412 have heretofore been granted to
                    any entity that is not a Small Business Concern.

               (5)  The Corporation will obtain approval from Park E. Guymon
                    Enterprises, Inc., pursuant to the Guymon License, for the
                    Crown Asphalt Ridge Project (as described in Section 5.1(J))
                    and subsequent such projects, prior to the Second Closing
                    Date.

               (E) Neither the Corporation nor any Subsidiary owns or has any
     interest in any Mark.

               (F) Neither the Corporation nor any Subsidiary owns or has any
     interest in any registered Copyright.

               (G) With respect to each Trade Secret the documentation relating
     to such Trade Secret is current, accurate and sufficient in detail and
     content to identify and explain

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     it, and to allow its full and proper use without reliance on the special
     Knowledge or memory of others.

               (1)  The Corporation and the Subsidiaries have taken all
                    reasonable precautions to protect the secrecy,
                    confidentiality and value of the Trade Secrets.

               (2)  The Corporation or a Subsidiary has good title and an
                    absolute (although not necessarily exclusive) right to use
                    the Trade Secrets. The Trade Secrets are not part of the
                    public Knowledge or literature, nor have they been used,
                    divulged, or appropriated for the benefit of any person
                    other than the Corporation or a Subsidiary or to the
                    detriment of the Corporation or any Subsidiary.  No Trade
                    Secret is subject to any adverse claim nor, to the best of
                    the Knowledge of the Corporation or any Subsidiary, has any
                    Trade Secret been challenged or threatened in any way.

     2.16 GOVERNMENTAL CONSENTS.   None of the circumstances in connection with
the offer, issue, sale or delivery of the Preferred Stock or the execution and
delivery of this Agreement is such as to require a consent, approval or
authorization of, or filing, registration or qualification with any Governmental
Authority on the part of the Corporation or any Subsidiary in connection with
the execution and delivery of this Agreement or the offer, issue, sale or
delivery of the Preferred Stock.

     2.17 ENVIRONMENTAL COMPLIANCE.

               (A) There has been no spill, release, threatened release,
     discharge or disposal of Hazardous Substances that has occurred or which is
     presently occurring on or onto any Business Facility or from any properties
     adjacent to or neighboring any Business Facility.

               (B) There are no presently existing or threatened Environmental
     Claims.

               (C) In connection with the construction on, or operation and use
     of, any Business Facility, there has been no failure by the Corporation or
     any Subsidiary or, to the Corporation's Knowledge, of any predecessor in
     interest to the Corporation to comply with all applicable Requirements of
     Environmental Laws relating to the Corporation, its operations, any
     Subsidiary, or any Business Facility or the Corporation's or any
     Subsidiary's manufacturing, processing, distribution, use, treatment,
     generation, recycling, reuse, sale, storage, handling, transportation or
     disposal of any Hazardous Substance and the Corporation is not aware of any
     facts or circumstances which could materially impair such compliance with
     all applicable Environmental Laws after the date of this Agreement.

                                       12
<PAGE>
 
               (D) The Corporation, each Subsidiary, and every Business Facility
     have made all required filings with respect to such Environmental Permits,
     or such Environmental Permits have been or will be timely made and all
     required applications for renewal thereof have been or will be timely
     filed.  With respect to those already obtained, all such Environmental
     Authorizations are in full force and effect; with respect to those to be
     applied for, to the best of the Corporation and any Subsidiary's Knowledge,
     there is no reason to believe that such Environmental Permits will not be
     issued in due course and in a timely fashion.  All Environmental Permits
     which would normally have been issued or applied for at this stage in the
     development of a project like the Crown Asphalt Ridge Project have been so
     issued or applied for, and there are no Proceedings pending or threatened
     that seek the revocation, cancellation, suspension, or adverse modification
     thereof.  The Corporation and each Subsidiary will have all pollution
     control equipment necessary to comply with all Requirements of
     Environmental Laws (including, without limitation, all applicable
     Environmental Permits) as they apply to the business currently being
     conducted; and the operations conducted at each Business Facility are in
     compliance with all terms and conditions of applicable Environmental
     Permits or Laws.

               (E) The Corporation and all Subsidiaries are not currently, and
     to the Corporation's Knowledge no predecessor in interest to the
     Corporation was, required to obtain any Environmental Permit to construct,
     demolish, renovate, occupy, operate or use any buildings, improvements,
     fixtures or equipment forming a part of any Business Facility that have not
     been obtained and fully disclosed to the Investor.

               (F) The present and past uses of every Business Facility satisfy
     all Requirements of Environmental Laws and there is no fact or circumstance
     which upon disclosure to any Governmental Authority would render this
     representation to be false or misleading in any respect.

               (G) There are no off-site locations where Hazardous Substances
     generated from any Business Facility have been stored or disposed of.

               (H) Neither the Corporation nor any Subsidiary has voluntarily
     undertaken response, decontamination or clean-up of any Business Facility
     or entered into an agreement to do the same or has been named as a
     potentially responsible party under or subject to a potential claim under
     CERCLA or comparable Environmental Laws; and neither the Corporation nor
     any Subsidiary has received notice of (i) any disposal, release, or
     threatened release of any Hazardous Substance at any current or prior
     Business Facility or (ii) any violation of, noncompliance with, or remedial
     obligation under any Environmental Law.

               (I) To the best of the Corporation's knowledge, there are less
     than five (5) Aboveground Storage Tanks at the Business Facilities of Crown
     Asphalt Ridge used to store diesel fuel, and none of such tanks has
     experienced or is currently experiencing any leaks.  Apart from the
     aforementioned Aboveground Storage Tanks, there is no ACM,

                                       13
<PAGE>
 
     Aboveground Storage Tank or Underground Storage Tank located on, in
     (including, with respect to ACM, within building materials) or about any
     Business Facility nor has any ACM, Aboveground Storage Tank or Underground
     Storage Tank has at any time been removed from any Business Facility.

               (J) There are no liens affecting the Corporation, any Subsidiary,
     or any Business Facility arising out of or in connection with an
     Environmental Claim and neither the Corporation, nor any Subsidiaries have
     received any summons, directive, citation, notice, letter or other
     communication, whether written or oral, from any Governmental Authority or
     any other person concerning any intentional or unintentional action or
     omission by the Corporation or any Subsidiary or any other Person which may
     result in an Environmental Claim or a breach of any Requirement of
     Environmental Law with regard to the Corporation, any Subsidiary or any
     Business Facility.

               (K) Notwithstanding anything else in this Section 2.17, all
     representations made by the Corporation with respect to this Section 2.17
     are made to the best Knowledge of the Corporation or any Subsidiary, to the
     extent that such representations relate to the period of time before the
     Corporation or any Subsidiary owned, occupied, worked at, or otherwise had
     control over or Knowledge of the relevant Business Facility.  This proviso
     does not affect the indemnification obligations of the Corporation under
     Article X hereof, which are undertaken without regard to qualifications
     relating to Knowledge of the Corporation or any Subsidiary.

     2.18 NON-CONTRAVENTION.  Except for exceptions that do not have a Material
Adverse Effect on the Corporation or any Subsidiary, neither the Corporation nor
any Subsidiary is in breach of, default under, or in violation of any applicable
law, decree, order, rule or regulation, or any indenture, contract, agreement,
deed, lease, loan agreement, commitment, bond, note, deed of trust, restrictive
covenant, license or other instrument or obligation to which it is a party or by
which it is bound or to which any of its assets are subject, the execution,
delivery and performance of this Agreement and the issuance, sale and delivery
of the Preferred Stock and other documents will not constitute any such breach,
default or violation or require consent or approval of any court or Governmental
Authority except as contemplated herein.

     2.19 BOOKS AND RECORDS.  The Corporation and any Subsidiaries maintain
books, records and accounts which, in reasonable detail, accurately and fairly
reflect the transactions and disposition of their  assets, and maintain a system
of internal accounting controls sufficient to provide reasonable assurances that
(i) transactions are executed in accordance with management's general or
specific authorization; (ii) transactions are recorded as necessary (a) to
permit preparation of financial statements in accordance with GAAP, and (b) to
maintain accountability for assets; (iii) access to assets is permitted only in
accordance with management's general or specific authorization; and (iv) the
recorded accountability for assets is compared with the existing assets at
reasonable intervals and appropriate action is taken with respect to any
differences.

                                       14
<PAGE>
 
     2.20  FINANCIAL STATEMENTS. The Investor has been furnished with the
consolidated balance sheet of the Corporation and its consolidated subsidiaries
as of December 31, 1996, and the related consolidated statements of earnings,
changes in shareholders' equity and cash flows for the years then ended,
together with the notes thereto and the related unqualified report thereon of an
independent certified public accountant (collectively, the "Audited
Financials").  The Investor also has been furnished with the unaudited
consolidated balance sheet of the Corporation and its consolidated subsidiaries
(the "Balance Sheet") as of June 30, 1997 (the "Balance Sheet Date") and the
related consolidated income statement for the six months then ended
(collectively, the "Unaudited Financials").  The Audited Financials, with the
related notes thereto, and the Unaudited Financials, (i) are in accordance with
the respective books and records of the Corporation and its consolidated
subsidiaries, and (ii) except as set forth on Schedule 2.20 hereto do not
reflect any material items of extraordinary income except as stated therein.
The Audited Financials, with the related notes thereto, have been prepared in
accordance with GAAP consistently applied throughout the periods involved except
as may be otherwise indicated therein and present fairly, in all material
respects, the consolidated financial position of the Corporation and its
consolidated subsidiaries as of the respective dates thereof and the results of
operations of the Corporation and its consolidated subsidiaries for the
respective periods indicated therein.  Subject to the normal recurring year end
adjustments, the absence of notes, and the absence of any statements of cash
flows or shareholders equity, the Unaudited Financial Statements have been
prepared in accordance with GAAP consistently applied throughout the periods
involved except as may be otherwise indicated therein and present fairly, in all
material respects, the consolidated financial position of the Corporation and
its consolidated subsidiaries as of the date thereof and the results of
operations of the Corporation and its consolidated subsidiaries for the periods
indicated therein.

     2.21 ABSENCE OF CERTAIN CHANGES.  Since the Balance Sheet Date, the
business of the Corporation and its Subsidiaries has been conducted in the
ordinary course consistent with past practices and, except for transactions
contemplated by this Agreement and the Operating Agreement, there has not been:

               (A) any event, occurrence, development or state of circumstances
     or facts which has had or could reasonably be expected to have a Material
     Adverse Effect;

               (B) any declaration, setting aside or payment of any dividend or
     other distribution with respect to any shares of capital stock or any
     partnership interests of any of the Corporation or any Subsidiary or any
     repurchase, redemption or other acquisition by the Corporation or any
     Subsidiary of any outstanding shares of Capital Stock or other securities
     or partnership interests of, or other ownership interests in, the
     Corporation or any Subsidiary;

               (C) any amendment of any material term of any outstanding
     security of the Corporation or any Subsidiary;

               (D) any incurrence by the Corporation or any Subsidiary of any
     debt, except in the Ordinary Course of Business;

                                       15
<PAGE>
 
               (E) any creation or assumption by the Corporation or any
     Subsidiary of any Lien on any material asset other than in the Ordinary
     Course of Business;

               (F) any making of any loan, advance or capital contributions to
     or investment in any Person other than loans, advances or capital
     contributions to or investments made in the Ordinary Course of Business;

               (G) any damage, destruction or other casualty loss (whether or
     not covered by insurance) affecting the business or assets of the
     Corporation or any Subsidiary which, individually or in the aggregate, has
     had or would reasonably be expected to have a Material Adverse Effect on
     the Corporation or any Subsidiary;

               (H) any transaction or commitment made, or any contract or
     agreement entered into, by the Corporation or any Subsidiary relating to
     its assets or business (including the acquisition or disposition of any
     assets) or any relinquishment by the Corporation or any Subsidiary of any
     contract or other right, in either case, material to the Corporation or any
     Subsidiary, other than (i) transactions and commitments in the Ordinary
     Course of Business and (ii) transactions and commitments contemplated by
     this Agreement;

               (I) any change in any method of accounting or accounting practice
     by the Corporation or any Subsidiary; or

               (J) except as set forth on Schedule 4.2, any (i) employment,
     deferred compensation, severance, retirement or other similar agreement
     entered into with any director, officer or employee of the Corporation or
     any Subsidiary (or any amendment to any such existing agreement), (ii)
     grant of any severance or termination pay to any director, officer or
     employee of the Corporation or any Subsidiary, or (iii) change in
     compensation or other benefits payable to any director, officer or employee
     of the Corporation or any Subsidiary pursuant to any severance or
     retirement plans or policies thereof.

     2.22 EMPLOYEE BENEFIT MATTERS.  There is no existing single-employer plan
defined in Section 4021(a) of ERISA in respect of which the Corporation or any
Subsidiary is, or immediately after the First Closing will be, an "employer" or
a "substantial employer" as defined in Sections 3(5) and 4001(a)(2) of ERISA,
respectively.  There have been no reportable events as set forth in Section
4043(b) of ERISA in respect of any such plan, and no termination of any such
plan since the effective date of ERISA, which could result in any tax, penalty
or liability being imposed upon the Corporation or any Subsidiary.  Neither the
Corporation nor any Subsidiary has participated in, and the purchase of the
Preferred Stock by the Investor will not involve, any "prohibited transaction"
(as defined in Section 4975 of the Code) that could subject the Corporation, any
Subsidiary, or the Investor to any tax or penalty imposed by said Section 4975.
Since the effective date of ERISA, neither the Corporation nor any Subsidiary
has incurred any "accumulated funding deficiency," as such term is defined in
Section 302 of ERISA, to which the Corporation or any Subsidiary could be

                                       16
<PAGE>
 
subject or for which it might be liable.  Neither the Corporation nor any
Subsidiary is, and immediately after the First Closing , neither will be, a
party to, and none of the operations of the Corporation or any Subsidiary is or
after the First Closing  will be covered by, a multi-employer plan, as defined
in Section 3(37) of ERISA.

     2.23 COLLECTIVE BARGAINING.  Neither the Corporation nor any Subsidiary is,
nor after the First Closing  will be, a party to or subject to any collective
bargaining agreements or union contracts.  There are no labor disputes pending
or, to the best of the Corporation's Knowledge, threatened between the
Corporation or any Subsidiary and its employees which have had, or so far as the
Corporation can reasonably foresee, may have, a Material Adverse Effect.

     2.24 EMPLOYEES.  The Corporation has delivered to the Investor copies of
all employment and compensation contracts between the Corporation or any
Subsidiary and officers and executives of the Corporation or such Subsidiary. No
officer or key employee of the Corporation or any Subsidiary has advised the
Corporation or any Subsidiary (in writing) that he or she intends to terminate
employment with the Corporation or any Subsidiary, either as a result of the
transactions contemplated by this Agreement or otherwise.

     2.25 NO BROKER'S OR FINDER'S FEES.  Except as indicated on Schedule 2.25,
no agent, broker, investment banker, person or firm has acted directly or
indirectly on behalf of the Corporation or any Subsidiary in connection with
this Agreement or the transactions contemplated hereby, and no such person or
entity is or will be entitled to any broker's or finder's fee or any other
commission or similar fee or expense, directly or indirectly, in connection with
this Agreement or the transactions contemplated hereby.

     2.26 EXEMPTION FROM REGISTRATION.  Based in part on the representations of
the Investor herein, the offer, sale and delivery of the Preferred Stock
pursuant to this Agreement is exempt from the registration requirements of the
Securities Act and all applicable state securities laws.

     2.27 NO UNDISCLOSED MATERIAL LIABILITIES.  There are no liabilities of the
Corporation or any Subsidiary of any kind whatsoever, whether accrued,
contingent, absolute, determined, determinable or otherwise, and there is no
existing condition, situation or set of circumstances which could reasonably be
expected to result in such a liability, other than:

               (A) liabilities provided for in the Balance Sheet or disclosed in
     the notes thereto;

               (B) liabilities disclosed on any of the Schedules attached
     hereto; and

               (C) other undisclosed liabilities which, individually or in the
     aggregate, are not material to the Corporation or any Subsidiary.

                                       17
<PAGE>
 
     2.28 INSURANCE COVERAGE.  The Corporation has furnished to the Investor a
list of, and true and complete copies of, all insurance policies and fidelity
bonds relating to the assets, business, operations, employees, officers or
directors of the Corporation or any Subsidiary.  There is no claim by the
Corporation or any Subsidiary pending under any of such policies or bonds as to
which coverage has been questioned, denied or disputed by the underwriters of
such policies or bonds or in respect of which such underwriters have reserved
their rights.  All premiums payable under all such policies and bonds have been
paid timely and the Corporation or any Subsidiary has otherwise complied fully
with the terms and conditions of all such policies and bonds.  Such policies of
insurance and bonds (or other policies and bonds providing substantially similar
insurance coverage) remain in full force and effect, and all such policies of
property and casualty and general liability insurance have been in effect since
January 1, 1995.  Such policies and bonds are of the type and in amounts
customarily carried by Persons conducting businesses similar to those of the
Corporation or any Subsidiary.  Neither the Corporation nor any Subsidiary knows
of any threatened termination of, premium increase with respect to, or material
alteration of coverage under, any of such policies or bonds.  The Corporation
and its Subsidiaries shall after the First Closing  Date continue to have
coverage under such policies and bonds (or other policies and bonds providing
substantially similar insurance and bonding coverage) with respect to events
occurring prior to the First Closing  Date.

     2.29 DISCLOSURE.  Neither this Agreement nor any other document,
certificate or statement furnished to the Investor by or on behalf of the
Corporation in connection herewith, contains any untrue statement of a material
fact or omits to state a material fact necessary in order to make the statements
contained herein and therein not misleading.  There is no fact regarding the
Corporation or any Subsidiary known to the Corporation or any Subsidiary which
the Corporation or any Subsidiary reasonably believes will materially and
adversely affect the business or financial condition of the Corporation or any
Subsidiary, which heretofore has not been set forth in this Agreement or in the
other documents, certificates and written statements furnished or otherwise
provided in writing to the Investor by or on behalf of the Corporation or any
Subsidiary prior to the date hereof in connection with the transactions
contemplated hereby.  All information previously provided, or to be provided to
Investor, and all Schedules contemplated hereby are, or shall be, respectively,
true, accurate and complete in all material respects.

     2.30 SECURITIES FILINGS.

               (A) The Corporation and each Subsidiary has filed all forms,
     reports, and documents required to be filed with the Securities and
     Exchange Commission (the "SEC"; such forms, reports, and documents, the
     "SEC Filings") since it was first required to make such filings.  The SEC
     Filings:

               (1)  were prepared in all material respects in accordance with
                    the requirements of the Securities Act or the Exchange Act,
                    as applicable; and

                                       18
<PAGE>
 
               (2)  did not at the time they were filed (or if amended or
                    superseded by a filing prior to the date of this Agreement,
                    then on the date of such filing) contain any untrue
                    statement of a material fact or omit to state a material
                    fact required to be stated therein or necessary to make the
                    statements therein, in light of the circumstances under
                    which they were made, not misleading.

               (B) Each of the consolidated financial statements (including, in
     each case, any related notes thereto) contained in the SEC Filings has been
     prepared in accordance with GAAP applied on a consistent basis throughout
     the periods involved (except as may be indicated in the notes thereto) and
     each fairly represents the financial position of the Corporation and its
     Subsidiaries as at the respective dates thereof and the results of its
     operations and cash flows for the periods indicated, except that the
     Unaudited Financials were or are subject to normal and recurring year-end
     adjustments which were not or are not expected to be material in amount.

                                 ARTICLE III.
                        REPRESENTATIONS OF THE INVESTOR

     The Investor represents and warrants to the Corporation as follows:

     3.1  ORGANIZATION AND EXISTENCE.  The Investor is a corporation duly
organized, validly existing and in good standing under the laws of Delaware, and
has all requisite power and authority to carry on its business as now being
conducted.

     3.2  AUTHORITY.  The Investor has full power and authority to execute and
deliver this Agreement and to consummate the transactions contemplated hereby.
The execution and delivery of this Agreement and the consummation of the
transactions contemplated hereby have been duly and validly authorized and
approved by the board of directors of the Investor, and no other proceedings on
the part of the Investor are necessary to authorize this Agreement or the
consummation of the transactions contemplated hereby.  This Agreement has been
duly and validly executed and delivered by the Investor and constitutes the
legal, valid and binding agreement of the Investor, enforceable against the
Investor in accordance with its terms, subject to (i) bankruptcy, insolvency and
other similar laws now or hereafter affecting the enforcement of the rights of
creditors generally and (ii) general principles of equity.

     3.3  NO VIOLATION.  Neither the execution and delivery of this Agreement,
the consummation of the transactions contemplated hereby, nor the compliance by
the Investor with any of the provisions hereof will (i) conflict with or result
in any breach of any provision of the Articles of Incorporation or Bylaws of the
Investor, (ii) result in a violation or breach of or constitute (with or without
due notice or lapse of time or both) a default (or give rise to any right of
termination, cancellation or acceleration) under, any of the terms, conditions
or provisions of any note, contract, agreement, commitment, bond, mortgage,
indenture, license, pledge agreement or other instrument

                                       19
<PAGE>
 
or obligation to which the Investor is a party or by which such Investor may be
bound, or (iii) violate any law, regulation, judgment, order, writ, injunction
or decree applicable to the Investor.

     3.4  NO BROKER'S OR FINDER'S FEES. Except as indicated in Section 1.5
herein, no agent, broker, investment banker, person or firm has acted directly
or indirectly on behalf of such Investor in connection with this Agreement or
the transaction contemplated hereby, and no such person or entity is or will be
entitled to any broker's or finder's fee or any other commission or similar fee
or expense, directly or indirectly, in connection with this Agreement or the
transaction contemplated hereby.

     3.5  INVESTMENT INTENT.  The Investor is purchasing the Preferred Stock for
the Investor's own account for investment and not with a view to the
distribution thereof, and none of such Preferred Stock will be offered or sold
in violation of the provisions of the Securities Act, or other applicable state
securities laws.  The Investor acknowledges that (i) it has conducted extensive
due diligence concerning the Corporation, (ii) it has had the opportunity to
make such inquiries of the Corporation, its Subsidiaries and their officers as
it deemed relevant to its investment decisions, (iii) it has received such
information as it deemed relevant and necessary to its purchase of the Preferred
Stock, and (iv) the Preferred Stock may not be disposed of by it unless the
Preferred Stock is registered for sale under the Securities Act and other
applicable state securities laws or an exemption from registration is available.

     3.6  NO ADDITIONAL REPRESENTATIONS OR WARRANTIES.  The Investor is making
no representations or warranties, express or implied, of any nature whatsoever
except as specifically set forth in Article III of this Agreement.

                                  ARTICLE IV.
                   POST-CLOSING COVENANTS OF THE CORPORATION

     4.1  POST-CLOSING  COVENANTS.  From the date of this Agreement and through
the Second Closing Date (with respect to Sections 4.1(A) and (G) (1)-(4)), and
for as long as the Investor continues to hold Preferred Stock that has not been
converted to Common Stock (unless this Agreement is terminated sooner pursuant
to Article VIII), the Corporation covenants that it will:

          (A) report immediately in writing, and in any event within five
     Business Days, after becoming aware of the existence of any condition or
     event which constitutes a breach of this Agreement or makes any of the
     Corporation's representations and warranties herein untrue or misleading;

          (B) make all SEC Filings required to be made pursuant to the
     Securities Act or the Exchange Act, or the rules promulgated thereunder;

          (C) deliver with reasonable promptness such other data and information
     regarding the books, records, business, property, or financial condition of
     the Corporation or any

                                       20
<PAGE>
 
     Subsidiary as from time to time may be required by Governmental Authorities
     governing the Corporation or any Subsidiary, or as may be reasonably
     requested by the Investor;

          (D) keep and maintain the property of the Corporation or any
     Subsidiary in compliance with, and will not cause or permit such property
     to be in violation of, any applicable Environmental Law in any material
     respect;

          (E) at all times maintain or cause to be maintained insurance with
     financially sound, established and reputable insurers with respect to such
     Properties and business (including, without limitation, fire, errors and
     omissions, directors and officers, and comprehensive general liability
     insurance) against loss or damage of the kinds customarily insured against
     by prudent corporations of established reputation engaged in the same or
     similar business and of similar situation and size as the Corporation or
     any Subsidiary; within thirty (30) days after the First Closing  Date, such
     insurance policies on the assets of the Corporation or any Subsidiary shall
     name the Investor as an additional loss-payee, and shall not remove the
     Investor as an additional loss-payee without the Investor's prior written
     consent;

          (F) comply in all respects with all applicable statutes, rules,
     regulations and orders of all Governmental Authorities with respect to the
     conduct of its business and the ownership and use or operation of such
     Properties (including, without limitation, Environmental Laws and all
     applicable statutes, regulations, orders and restrictions relating to equal
     employment opportunities and environmental standards and controls), the
     violation of which could have a Material Adverse Effect;

          (G) promptly notify the Investor of:

              (1)  any notice or other communication from any Person alleging
                   that the consent of such Person is or may be required in
                   connection with the transactions contemplated by this
                   Agreement;

              (2)  any action, event or condition of any nature which would
                   make any of the representations and warranties made by the
                   Corporation untrue if such action, event or condition were
                   in existence on the date of this Agreement;

              (3)  any notice or other communication from any Governmental
                   Authority received by the Corporation or any Subsidiary in
                   connection with the transactions contemplated by this
                   Agreement;

              (4)  any actions, suits, claims, investigations, or proceedings
                   commenced or, to its Knowledge threatened against, relating
                   to or involving or otherwise affecting the Corporation or
                   any Subsidiary that if pending

                                       21
<PAGE>
 
                   on the date of this Agreement would have been required to be
                   disclosed pursuant to Article II; and

              (5)  any other action, event, or condition of any nature known to
                   an officer of the Corporation or any Subsidiary (i) where
                   there is a significant possibility that such action, event,
                   or condition will lead to or result in a Material Adverse
                   Effect on the Corporation or any Subsidiary, (ii) that, with
                   or without notice or lapse of time or both, would constitute
                   a material default under any other material agreement,
                   instrument, or indenture to which the Corporation or any
                   Subsidiary or material property of the Corporation or any
                   Subsidiary, may be subject, or (iii) where there is a
                   significant possibility that such action, event, or
                   condition will result in any termination or material
                   impairment of any other such material agreement, instrument,
                   or indenture.

          (H) allow, upon reasonable notice, the Investor or its representatives
     reasonable access during normal business hours to all places where the
     Corporation or any Subsidiary conducts business;

          (I) upon reasonable notice and during normal business hours, give to
     the Investor, its counsel, financial advisors, auditors, and other
     authorized representatives full access to the offices, properties, books
     and records of the Corporation or any Subsidiary;

          (J) furnish the Investor, its counsel, financial advisors, auditors,
     and other authorized representatives such financial and operating data and
     other information relating to the Corporation or any Subsidiary as such
     Persons shall reasonably request;

          (K) instruct the employees and agents of the Corporation or any
     Subsidiary to cooperate with the Investor in its investigation of the
     Corporation or any Subsidiary; and

          (L) comply with the terms of, and use reasonable efforts to cause any
     other party to  comply with the terms of, the contracts listed on Schedule
     2.5 (as it may be updated from time to time), including without limitation
     the Operating Agreement.

     No investigation by the Investor or other information received by the
Investor shall operate as a waiver or otherwise affect any representation,
warranty, or agreement given or made by the Corporation hereunder.

     4.2  NEGATIVE COVENANTS.  From the date of this Agreement and through the
Second Closing, the Corporation covenants that it will not, and that it will
cause any Subsidiaries not to, without the prior written consent of the
Investor:

                                       22
<PAGE>
 
          (A) amend its articles of incorporation or bylaws or other
     Organizational Documents;

          (B) change the methods used in allocating and charging costs, except
     as may be required by applicable law, regulation, or GAAP;

          (C) except as provided in the Operating Agreement, merge or
     consolidate with any other Person or acquire a material amount of assets of
     any other Person or enter into any agreement with respect to same;

          (D) except as provided in the Operating Agreement, incur or agree to
     incur, or otherwise guarantee or become liable for, any commitment,
     obligation or liability, absolute or contingent, other than in the Ordinary
     Course of Business;

          (E) except as provided in the Operating Agreement, enter into or
     assume any mortgage, pledge, conditional sale or other title retention
     agreement, or cause or permit any lien, security interest, mortgage,
     encumbrance or charge of any kind to attach upon any of its assets, whether
     now owned or hereafter acquired, except for capital leases and liens for
     taxes, assessments or governmental charges or levies which are not
     delinquent;

          (F) permit any insurance policy naming the Corporation or any
     Subsidiary as a beneficiary, insured or loss payable payee to be canceled
     or terminated or any of the coverage thereunder to lapse unless
     simultaneously with such cancellation or termination replacement policies
     providing substantially the same or greater coverage with comparable
     insurance carriers are in full force and effect;

          (G) except as provided in the Operating Agreement, enter into any
     business dealing or transaction, directly or indirectly, with any Affiliate
     of the Corporation or any Subsidiary, make any payments to any Affiliate of
     the Corporation or any Subsidiary or conduct or account for any existing
     transaction with any Affiliate of the Corporation or Subsidiary on other
     than an arm's length basis.

          (H) except as set forth on Schedule 2.2, change the number of shares
     of the Capital Stock issued and outstanding, or issue, reserve for
     issuance, grant, sell or authorize the issuance of any shares of its
     Capital Stock or subscriptions, options, warrants, calls, rights or
     commitments of any kind relating to the issuance or sale of or conversion
     into shares of its Capital Stock;

          (I) except as provided in the Operating Agreement, create, incur,
     assume or permit to exist, or contract to create, incur, assume or permit
     to exist any new debt, capital lease obligations, liens or encumbrances on
     the Corporation's assets or any Subsidiary's assets except for:

                                       23
<PAGE>
 
              (1)  debts, capital lease obligations, liens or encumbrances in
                   existence or contracted for as of the date hereof or sought
                   in conjunction with this Agreement and previously disclosed
                   in writing to the Investor; or

              (2)  debts, capital lease obligations, liens or encumbrances
                   created or incurred in the Ordinary Course of Business.

          (J) cancel any debts or waive any claims or rights of value except in
     the Ordinary Course of Business;

          (K) except as provided in the Operating Agreement, create a new
     Subsidiary or permit any Subsidiary to create, incur, assume or permit to
     exist, or contract to create, incur, assume or permit to exist any debt in
     excess of $10,000;

          (L) except in the Ordinary Course of Business, and except as provided
     in the Operating Agreement, sell, lease or dispose, or contract to sell,
     lease or dispose, of more than 10% of its assets owned as of the date of
     this Agreement or acquired hereafter;

          (M) except as set forth on Schedule 4.2, and except for regular salary
     increases granted in the Ordinary Course of Business, grant any increase in
     compensation or directors' fees, or pay or agree to pay or accrue any bonus
     or like benefit to or for the credit of any director, officer, employee or
     other person or enter into any employment, consulting or severance
     agreement or other agreement with any director, officer or employee, or
     adopt, amend or terminate any employee benefit plan or change or modify the
     period of vesting or retirement age for any participant of such a plan;

          (N) make any material changes in the operation of the business;

          (O) make any income tax or franchise tax election or settle or
     compromise any federal, state, local or foreign income tax or franchise tax
     liability, or, except in the Ordinary Course of Business, make any other
     tax election or settle or compromise any other federal, state, local or
     foreign tax liability;

          (P) enter into any transaction, or enter into, modify or amend any
     contract or commitment other than in the Ordinary Course of Business, or
     enter into a partnership or joint venture with or provide management
     services for another company in a similar business;

          (Q) change any fiscal year or the length thereof;

          (R) fail to comply with the terms of the Preferred Stock;

                                       24
<PAGE>
 
          (S) terminate or agree to any amendment to, or make any waiver with
     respect to, any of the contracts listed on Schedule 2.5 hereto (as it may
     be updated from time to time).

     4.3  DEEMED APPROVAL.  Prior to the Second Closing Date, if the Investor
does not respond in writing within three (3) business days  to the written
request of the Corporation to take any of the actions listed in Section 4.2, the
Investor shall be deemed to have approved such request.

     4.4  NO SOLICITATIONS.  Until the termination of this Agreement, the
Corporation will not, and will not permit its officers, directors, Subsidiaries,
or officers or directors of any Subsidiary to:

               (A) solicit, initiate, encourage, conduct, or engage in any
     discussion, or enter into any agreement or understanding, with any other
     Person regarding the transfer, directly or indirectly, of any of the
     ownership interests of the Corporation or any Subsidiary or any material
     part of the Corporation's or any Subsidiary's assets; or

               (B) disclose any nonpublic information relating to the Investor
     or the Corporation or any Subsidiary, or afford access to any other Person
     to the property, books, or records of the Corporation or any Subsidiary,
     that the Corporation believes to be considering acquiring an interest in
     the Corporation or any Subsidiary.

If the Corporation becomes aware of any inquiry or request by another Person
with respect to any such transfer or disclosure, the Corporation shall promptly
notify the Investor of such inquiry, indicate the identity of the offeror and
the terms and conditions of any proposals or offers or the nature of any
inquiries or contacts, and thereafter keep the Investor informed, on a current
basis, of the status and terms of any such proposals or offers and the status of
any such discussions or negotiations.

     4.5  INFORMATION REQUIREMENTS.

               (A) As long as the Investor or an Affiliate of the Investor owns
     any of the Preferred Stock it acquires hereby, the Corporation covenants to
     the Investor that it will:

               (1) deliver or cause to be delivered to the Investor as soon as
                   practicable after the end of each fiscal year of the
                   Corporation, and in any event within 120 days thereafter, one
                   copy of the audited consolidated and consolidating balance
                   sheet (as at the end of such fiscal period) and the related
                   consolidated and consolidating statements of income, retained
                   earnings and cash flows of the Corporation and any
                   Subsidiaries for such fiscal period, including the notes
                   thereto, setting forth in comparative form the figures for
                   the corresponding period of the previous fiscal year, all in
                   reasonable detail and accompanied by a report thereon of an
                   independent certified public accountant, selected by the
                   Corporation and acceptable to the Investor, which

                                       25
<PAGE>
 
                   report shall state that the audit was performed in accordance
                   with AICPA standards and that such consolidated and
                   consolidating financial statements present fairly, in all
                   material respects, the consolidated and consolidating
                   financial position of the Corporation and any Subsidiaries as
                   at the dates indicated and the results of operations and
                   changes in financial position for the periods indicated in
                   conformity with GAAP applied on a basis consistent with prior
                   years (except as otherwise specified in such report) and that
                   the audit by such accountants in connection with such
                   consolidated and consolidating financial statements has been
                   made in accordance with GAAP;

              (2) deliver or cause to be delivered to the Investor as soon as
                   practicable after the end of each of the quarterly fiscal
                   periods in each fiscal year of the Corporation and any
                   Subsidiaries, and in any event within 60 days thereafter, (i)
                   one copy of the compiled consolidated and consolidating
                   balance sheet (as at the end of such period) and the related
                   consolidated and consolidating statements of income, retained
                   earnings and cash flows of the Corporation and any
                   Subsidiaries for such period, including the notes thereto,
                   and (ii) for the period from the beginning of the current
                   fiscal year to the end of such quarterly fiscal period, the
                   related consolidated and consolidating statements of income,
                   retained earnings and cash flows of the Corporation and any
                   Subsidiaries, including the notes thereto, in each case for
                   such period, setting forth in comparative form the figures
                   for the corresponding periods of the previous fiscal year,
                   all in reasonable detail and certified by the Responsible
                   Officer of the Corporation as presenting fairly, in
                   accordance with GAAP applied on a basis consistent with such
                   prior fiscal periods, the information contained therein,
                   subject to changes resulting from normal year-end audit
                   adjustments;

               (3) deliver or cause to be delivered to the Investor as soon as
                   practicable after the end of each fiscal month, and in any
                   event within thirty (30) days thereafter, (i) one copy of the
                   balance sheet (as of the end of such month) and the related
                   consolidated and consolidating statements of income, retained
                   earnings and cash flows of the Corporation and any
                   Subsidiaries for such period, all in reasonable detail and
                   certified by the Responsible Officer of the Corporation as
                   presenting fairly, in accordance with GAAP applied on a basis
                   consistent with such fiscal periods, the information
                   contained therein, subject to changes resulting from normal
                   year-end audit adjustments, and (ii) for each such fiscal
                   month, a consolidated and consolidating

                                       26
<PAGE>
 
                   statement of income setting forth in comparative form the
                   budgeted and actual figures and the resulting variance for
                   such month;

               (4) deliver or cause to be delivered to the Investor as soon as
                   practicable prior to the end of each fiscal year of the
                   Corporation, and in any event no later than 15 days prior to
                   the end of the fiscal year of the Corporation, one copy of
                   the annual budgets and forecasts setting forth in reasonable
                   detail on a monthly basis such figures for the Corporation's
                   next fiscal year and the detailed assumptions underlying the
                   preparation of such budgets and forecasts;

              (5)  promptly file and pay all income, employer, property,
                   franchise and any other taxes for the Corporation and any
                   Subsidiaries, and provide to the Investor in connection with
                   the President's Report, and in no event later than 45 days
                   after filing, signed copies of each federal and state income,
                   employer, property, franchise and other tax returns and tax
                   reports (except for state and local fuel tax returns for
                   which a summary will suffice), as well as any requests for
                   extension of the filing deadline;

              (6)  provide to Investor a copy of each proposed or final Annual
                   Operating Plan prepared pursuant to either the Operating
                   Agreement or the Asphalt Ridge Project Operating and
                   Management Agreement between Crown Asphalt Corporation and
                   Crown Asphalt Ridge, L.L.C. (the "Management Agreement")
                   simultaneously with its delivery to the Management Committee
                   under the Operating Agreement;

              (7)  provide to the Investor a copy of each proposed or final
                   Annual Operating Budget prepared pursuant to either the
                   Operating Agreement or the Management Agreement
                   simultaneously with its delivery to the Management Committee
                   under the Operating Agreement;

              (8)  furnish the Investor copies of any reports prepared and
                   distributed pursuant to either the Operating Agreement or the
                   Management Agreement, including without limitation the
                   reports described in Article 6 of the Management Agreement;

              (9)  notify the Investor at least thirty (30) days prior to any
                   amendment or change to any Annual Operating Plan or Annual
                   Operating Budget described above; and

                                       27
<PAGE>
 
              (10) deliver to the Investor, contemporaneously with the filing,
                   publication or distribution of such, copies of all SEC
                   Filings, communications from the Corporation to its
                   shareholders or directors, or communications from any
                   Subsidiary to its shareholders, members, or managers or
                   directors, as the case may be, after the date of this
                   Agreement.

               (B) The Corporation shall have no obligations under Section
     4.5(A) to any transferee of the Preferred Stock or of the Common Stock into
     which the Preferred Stock is converted, other than an Affiliate of the
     Investor.

     Nothing contained in this Article IV is intended to influence the general
management or overall operations of the Corporation or any Subsidiary in a
manner not permitted by applicable law and the provisions hereof shall
automatically be reduced in compliance therewith.


                                  ARTICLE V.
                       CONDITIONS TO THE SECOND CLOSING

     5.1  CONDITIONS TO INVESTOR'S OBLIGATION WITH RESPECT TO SECOND CLOSING
DATE.  The Investor's obligation to pay the Tranche 2 Purchase Price in exchange
for the Tranche 2 Preferred Stock listed in Schedule 1.1 is subject to the
satisfaction, in the reasonable determination of the Investor, of the following
conditions precedent:

               (A) REPRESENTATIONS AND WARRANTIES.  The representations and
     warranties contained in this Agreement and those otherwise made in writing
     by or on behalf of the Corporation and delivered or otherwise provided to
     the Investor in connection with the transactions contemplated by this
     Agreement shall be true, correct and complete on and as of the Second
     Closing Date.  The Investor shall have received a certificate signed by the
     Corporation to that effect.

               (B) COMPLIANCE WITH AGREEMENT.  The Corporation and any
     Subsidiary shall have performed all obligations and complied with all
     covenants required by this Agreement to be performed or complied with by it
     on or prior to the Second Closing Date. The Investor shall have received a
     certificate signed by the Corporation to that effect.

               (C) LITIGATION.  There shall not be instituted or pending to the
     Knowledge of the Corporation or any Subsidiary, any action or proceeding by
     any Person before any court or Governmental Authority, (i) seeking to
     restrain or prohibit the ownership or operation by the Corporation or any
     Subsidiary of all or any material portion of the business or assets of the
     Corporation or any Subsidiary, (ii) seeking to impose or confirm material
     limitations on the ability of the Investor to exercise full rights of
     ownership of its Preferred Stock or Common Stock, or (iii) seeking to
     require divestiture by any Investor or any

                                       28
<PAGE>
 
     Investor's Affiliate of any of its Preferred Stock or Common Stock.  No
     injunction or restraining order, issued by a court of competent
     jurisdiction, which prohibits the consummation of, or materially and
     adversely affects, the transactions contemplated by this Agreement, shall
     be in effect.

               (D) AUTHORIZATION.  All action necessary to authorize the
     execution, delivery and performance of this Agreement by the Corporation or
     any Subsidiary and the consummation by  the Corporation or any Subsidiary
     of the transactions contemplated by this Agreement shall have been duly and
     validly taken.  All consents, approvals or waivers from third parties or
     from Governmental Authorities legally required in order to consummate the
     transactions contemplated by this Agreement, if any, shall have been
     obtained.

               (E) NO MATERIAL ADVERSE CHANGE.  Since the date of this
     Agreement, there shall have been no change in the assets, liabilities,
     financial condition, business, operations or prospects of the Corporation
     or any Subsidiary which would have a Material Adverse Effect on the
     Corporation or any of its Subsidiaries, which would have a Material Adverse
     Effect on the Corporation or any of its Subsidiaries.

               (F) PROCEEDINGS.  All corporate and other proceedings taken or to
     be taken by the Corporation or any Subsidiary in connection with the
     transactions contemplated by this Agreement and all documents incident to
     such proceedings shall be reasonably satisfactory in form and substance to
     the Investor and its counsel, and the Investor and its counsel shall have
     received all certified or other copies of such documents as the Investor or
     its counsel may reasonably request.

               (G) CONDUCT OF BUSINESS.  Since the First Closing  Date, the
     Corporation and any Subsidiaries shall have conducted the operations of
     their businesses consistent with past practices in the Ordinary Course of
     Business and shall have used reasonable efforts to preserve their business
     organizations intact and their good relationships with employees,
     customers, suppliers and others having business relationships with them.

               (H) ACCESS AND INFORMATION.  The Corporation and any Subsidiaries
     shall have afforded the Investor and its counsel, accountants and other
     representatives full access during normal business hours, as the Investor
     may reasonably request, to all of the properties, books, contracts,
     commitments and records of the Corporation or such Subsidiaries  and shall
     have furnished the Investor with all such information concerning the
     affairs of the Corporation or such Subsidiaries as the Investor may
     reasonably request.

               (I) DUE DILIGENCE.  The Corporation and any Subsidiaries shall
     have supplied the Investor with, and the Investor shall have reviewed and
     approved all documents, records, financial statements, and other materials
     necessary for the Investor to complete a due diligence review of the
     Corporation and such Subsidiaries.

                                       29
<PAGE>
 
               (J)  CROWN ASPHALT RIDGE PROJECT.

               (1)  All documents required for the equity financing necessary to
                    finance the construction of a 660,000 tons/year oil sands
                    (in raw materials) processing facility to be constructed in
                    eastern Utah (the "Project") shall have been executed,
                    including the Operating Agreement for Crown Asphalt Ridge,
                    in form and substance satisfactory to the Investor, and
                    there shall have been no events of default under such
                    documents.

               (2)  Crown Asphalt Ridge's contracts for the design, purchase and
                    construction of the Project and all provisions thereof,
                    including performance penalties and bonuses, and other
                    primary contracts and agreements required by Investor, shall
                    be in form and substance satisfactory to the Investor.

               (3)  Product marketing plans for the output of the Project shall
                    be in a form and substance satisfactory to the Investor.

               (4)  A complete technical review (including environmental review
                    and site audit) and analysis of the Project with respect to
                    the integrity and feasibility of all engineering, site
                    conditions, environmental requirements, design, technology,
                    capacity, construction, completion schedule, final cost
                    budget and operating specifications from the Investor's
                    environmental consultant shall have been conducted and shall
                    be satisfactory to the Investor.

               (5)  All Governmental Authorizations, including all Environmental
                    Permits, and approvals necessary to commence, construct and
                    operate the Project shall have been obtained, or shall be
                    obtained in the normal course of business.

               (6)  Certificates of insurance and brokers' opinion letters
                    demonstrating insurance coverage in types and amounts and
                    with insurers which are rated "A" or better by A.M. Best &
                    Corporation shall have been provided to the Investor, which
                    will include title, property, builders all risk,
                    comprehensive general liability, auto liability, excess
                    liability, workers' compensation, boiler and business
                    interruption insurance.  All policies will contain
                    provisions such that they shall not be invalidated by any
                    acts or omissions of Crown Asphalt Ridge, will require
                    issuer to provide at least 30 days written notice of
                    cancellation or material change, will list Crown Asphalt
                    Ridge and its Affiliates as their applicable interests
                    appear, and include issuer's

                                       30
<PAGE>
 
                    waiver of rights of subrogation, set-off and counterclaim
                    against lenders.

               (7)  Employment agreements in form and substance satisfactory to
                    the Investor shall have been executed with respect to the
                    president of the Corporation.

               (8)  Terms of the electricity and natural gas purchase agreements
                    with respect to the Project shall be satisfactory in form
                    and substance to the Investor.

               (9)  Current cost, budget, budget forecasts and projections for
                    the Project, including projections of the pro rata rate of
                    return, shall not be materially different from those
                    presented to the Investor by any party on the First Closing
                    Date.

               (10) The Corporation shall have provided a certificate to the
                    effect that there have been no defaults by any party under
                    the Operating Agreement.

               (11) The Corporation shall have certified to the Investor that
                    MCNIC has made the determination to proceed with the
                    secondary capital contributions described in Section 3.4 of
                    the Operating Agreement, and that all conditions to closing
                    under the Operating Agreement have been satisfied.

     5.2  OTHER DOCUMENTS AND ITEMS TO BE DELIVERED ON THE SECOND CLOSING DATE.
The Corporation shall have delivered to the Investor on or prior to the Second
Closing Date:

               (A) Certificates representing the shares of Tranche 2 Preferred
     Stock purchased by the Investor pursuant hereto;

               (B) A resolution of the board of directors of the Corporation
     authorizing the issuance of the Preferred Stock, and a certificate of the
     Secretary of the Corporation attesting to the authenticity of such
     resolution;

               (C) An opinion or opinions of counsel to the Corporation, dated
     the Second Closing Date, in form and substance reasonably satisfactory to
     the Investor.  In rendering such opinion or opinions, such counsel may make
     customary assumptions and exceptions and may rely upon certificates of
     public officers and, as to matters of fact, upon a certificate of the
     Corporation;

                                       31
<PAGE>
 
               (D) The Right of Co-Sale Agreement executed and delivered in the
     form attached hereto as Exhibit C to the Corporation by Jay Mealey;

               (E) A check from the Corporation for reimbursement of expenses as
     described in Section 12.1 hereof.


                                  ARTICLE VI.
                           COVENANTS OF THE INVESTOR

     6.1  CONFIDENTIALITY.  The Investor will hold, and will use its best
efforts to cause its officers, directors, employees, accountants, counsel,
consultants, advisors, and agents to hold, in confidence, unless compelled to
disclose by judicial or administrative process or by other requirements of law,
all documents and information concerning the Corporation or any Subsidiary
furnished to the Investor in connection with the transactions contemplated by
this Agreement except to the extent that such information can be shown to have
been

               (A) previously known on a nonconfidential basis by the Investor;

               (B) in the public domain through no fault of the Investor; or

               (C) later lawfully acquired by the Investor on a nonconfidential
     basis from sources other than the Corporation or any Subsidiary;

provided, that the Investor may disclose such information to its officers,
directors, employees, accountants, counsel, consultants, advisors, and agents in
connection with the transactions contemplated by this Agreement so long as such
Persons are informed by the Investor of the confidential nature of such
information and are directed by the Investor to treat such information
confidentially.  The obligation of the Investor to hold any such information in
confidence shall be satisfied if it exercises the same care with respect to such
information as it would take to preserve the confidentiality of its own similar
information.  If this Agreement is terminated, the Investor will, and will use
its best efforts to cause its respective officers, directors, employees,
accountants, counsel, consultants, advisors, and agents to, destroy or deliver
to the Corporation, upon request, all documents and other materials, and all
copies thereof, obtained by the Investor or on its behalf regarding the
Corporation or any Subsidiary in connection with the transactions contemplated
by this Agreement that are subject to such confidence.

                                       32
<PAGE>
 
                                 ARTICLE VII.
                         COVENANTS OF ALL THE PARTIES

     7.1  BEST EFFORTS.  Subject to the terms and conditions of this
Agreement, each party hereto will use its best efforts to take, or cause to be
taken, all actions and to do, or cause to be done, all things necessary or
desirable under applicable laws and regulations to consummate the transactions
contemplated by this Agreement.  Each party agrees to execute and deliver such
other documents, certificates, agreements, and other writings and to take such
other actions as may be necessary or desirable in order to consummate or
implement expeditiously the transactions contemplated by this Agreement.

     7.2  CERTAIN FILINGS. The parties hereto shall cooperate with one another

          (A) in determining whether any action by or in respect of, or
     filing with, any Governmental Authority is required, or any actions,
     consents, approvals, or waivers are required to be obtained from parties to
     any material contracts, in connection with the consummation of the
     transactions contemplated by this Agreement; and

          (B) in taking such actions or making such filings, furnishing
     information required in connection therewith and seeking timely to obtain
     any such actions, consents, approvals, or waivers.

                                 ARTICLE VIII.
                                  TERMINATION

     8.1  TERMINATION EVENTS.  In addition to any other rights or remedies a
party hereto may have under this Agreement, at law or in equity, or otherwise,
this Agreement may, by written notice given at or prior to the First Closing  in
the manner hereinafter provided, be terminated:

          (A) by the Investor, on the one hand, or the Corporation, on the
     other hand, if any representation or warranty made by the Corporation or of
     the Investor, respectively, shall not have been true, correct and complete
     when made, or a default or breach shall be made by the Corporation or the
     Investor, respectively, with respect to the due and timely performance of
     any of its covenants and agreements contained herein, or with respect to
     the due compliance with any of its representations, warranties or
     covenants, and such default has not been waived; provided, that before this
     Agreement is terminated pursuant to this Section 8.1(A), the party wishing
     to terminate hereunder must give the defaulting or breaching party ten (10)
     days written notice of intent to terminate, and state with reasonable
     specificity the reasons therefor.  Upon receipt of such notice, the
     breaching or defaulting party shall have ten (10) days time in which to
     cure the breach or default.  Upon such cure, the party giving notice shall
     no longer have the right to terminate pursuant to this Section 8.1(A) with
     respect to such breach or default.

                                       33
<PAGE>
 
          (B) by the Investor if all of the conditions set forth in Article V
     shall not have been satisfied on or before December 31, 1997, other than
     through failure of the Investor to comply fully with its obligations
     hereunder, and shall not have been waived by the Investor on or before such
     date;

          (C) by the Corporation, if all of the conditions set forth in Article
     V shall not have been satisfied on or before December 31, 1997, other than
     through failure of the Corporation to comply fully with its obligations
     hereunder, and shall not have been waived by the Corporation on or before
     such date;

          (D) by the Corporation, if the Second Closing has not occurred by the
     seventh business day following delivery of the certificate referred to in
     Section 5.2(J)(11) hereof; or

          (E) by mutual consent of all the parties to this Agreement.

     8.2  EFFECT OF TERMINATION.  In the event this Agreement is terminated
pursuant to Section 8.1, all further obligations of the parties hereunder shall
terminate, except that the obligations set forth in Sections 12.1, and Articles
VI, X, XI, and XII, shall survive; provided, that if this Agreement is so
terminated by a party because of an untrue, incorrect or incomplete
representation or warranty, because of a default on or breach of any covenant,
agreement or warranty contained herein, or because one or more of the conditions
to such party's obligations hereunder is not satisfied as a result of the other
party's failure or refusal to comply with its obligations under this Agreement,
the terminating party's right to pursue all legal remedies for breach of
contract or otherwise, including, without limitation, damages relating thereto,
shall also survive such termination unimpaired.  The exercise of the right to
terminate this Agreement pursuant to Section 8.1 or otherwise shall not be an
election of remedies.  If the Agreement is terminated for any reason prior to
the Second Closing, then Investor shall cause ECT Securities Corp. to return all
but $9,000 of the Structuring Fee to the Corporation.

                                  ARTICLE IX.
                            RIGHTS OF FIRST REFUSAL

     9.1  INVESTOR'S RIGHT OF FIRST REFUSAL UPON ISSUANCE OF NEW SECURITIES.

          (A) The Investor, and each other holder of Preferred Stock shall
     have the right of first refusal to purchase (subject to Section 9.1(A)(1)
     below), pro rata, all (or any part) of any New Securities (as defined in
     this Article) that the Corporation or any Subsidiary (other than Crown
     Asphalt Ridge) may, from time to time, propose to sell or issue:  for the
     express purpose of capitalizing, developing or acquiring a material new
     business (other than the Project or any business that is competitive with
     the Project).

                                       34
<PAGE>
 
               (1)  Each such holder's pro rata share, for the purposes of this
                    first offer right, is the ratio of the (a) number of shares
                    of Common Stock into which the shares of all Preferred Stock
                    then held by such holder is then convertible to (b) the sum
                    of (i) the total number of shares of Common Stock then
                    outstanding, on a fully diluted basis and (ii) the total
                    number of shares of Common Stock issuable upon conversion of
                    all shares of Preferred Stock then outstanding.

               (2)  The other provisions of Section 9.1 notwithstanding, the
                    right of the Investor and each other holder of Preferred
                    Stock under this Article IX shall only be to purchase that
                    amount of the New Securities that will enable each such
                    Person to maintain the percentage of equity ownership of the
                    Corporation (calculated with respect to the Preferred Stock,
                    on the basis of the Common Stock into which the Preferred
                    Stock held by such Persons is convertible) held by such
                    Person immediately before the issuance of such New
                    Securities.

          (B) "New Securities" shall mean any equity securities of the
     Corporation, or any of its Subsidiaries, except Crown Asphalt Ridge,
     whether now authorized or not, and rights, options, or warrants to purchase
     such equity securities; provided, however, that "New Securities" does not
     include shares of Common Stock issued upon conversion of shares of
     Preferred Stock; and provided, further, that it does not include equity
     securities to which Article 8 of the Series A Preferred Stock Designation
     of Rights and Preferences applies.

          (C) In the event that the Corporation or any subsidiary proposes
     to undertake an issuance of New Securities, at least thirty-one (31) days
     before such issuance, it shall deliver to each holder of Preferred Stock
     written notice of its intention, describing in such notice the type of New
     Securities, the price, and the general terms upon which the Corporation
     proposes to issue the New Securities.  Each such holder of Preferred Stock
     shall have twenty (20) days from the date of its receipt of any such notice
     to agree to purchase all or a part of its pro rata share of such New
     Securities for the price and upon the general terms specified in the notice
     by giving written notice to the Corporation and stating therein the
     quantity of New Securities to be purchased.  Each such holder of Preferred
     Stock shall have a right of over allotment such that if any holder fails to
     exercise its right hereunder to purchase its pro rata portion of the New
     Securities, the other holders may elect to purchase the nonpurchasing
     holder's portion on a pro rata basis, up to and including all of the New
     Securities proposed to be sold by the Corporation, within ten (10) days
     from the date such nonpurchasing party fails to exercise its right
     hereunder to purchase its pro rata share of New Securities.

               (D) In the event that the holders of Preferred Stock fail to
     exercise in full the right of first refusal within said twenty (20) plus
     ten (10) day period, the Corporation shall have ninety (90) days thereafter
     to sell the New Securities with respect to which the

                                       35
<PAGE>
 
     right of first refusal is not exercised (or initiate filing of a
     registration statement under the Securities Act, so long as the Corporation
     proceeds as promptly as possible to get the sale of such New Securities
     registered, and so long as they are in fact registered within one hundred
     fifty (150) days of the end of such twenty (20) plus  ten (10) day period),
     at a price and upon general terms no more favorable to the Investor thereof
     than specified in the Corporation's or Subsidiary's notice.  In the event
     the Corporation or any Subsidiary has not so sold the New Securities within
     said ninety (90) day period (or, if a registration statement is filed
     within such ninety (90) day period, said one hundred fifty (150) day
     period), the Corporation or any Subsidiary shall not thereafter issue or
     sell any New Securities, without first offering such New Securities to the
     holders of the Preferred Stock in the manner set forth above.

     9.2  CORPORATION'S RIGHT OF FIRST REFUSAL.

          (A) Subject to the provisions of Section 9.2(D) below, the
     Corporation shall have the right of first refusal to purchase all (or any
     part) of any Preferred Stock or Common Stock into which the Preferred Stock
     has been converted (collectively, for the purposes of this Section 9.2
     only, the "Securities") that the Investor or any Affiliate may, from time
     to time, propose to sell.

          (B) In the event that the Investor or any Affiliate proposes to
     sell any of the Securities, at least thirty-one (31) days before such sale,
     it shall deliver to the Corporation written notice of its intention,
     describing in such notice the price at, and the general terms upon, which
     the Investor or Affiliate proposes to sell the New Securities.  The
     Corporation shall have twenty (20) days from the date of its receipt of any
     such notice to agree to purchase all (but not less than all) of such
     Securities for the price and upon the general terms specified in the notice
     by giving written notice to the Investor.

          (C) In the event that the Corporation fails to exercise in full
     the right of first refusal within said twenty (20) day period, the Investor
     may proceed with the sale of the Securities, provided that such sale shall
     be at a price and upon general terms no more favorable to the purchaser
     than specified in the Investor's notice under Section 9.2(B) .  In the
     event the Investor has not so sold the Securities within said ninety (90)
     day period, the Investor shall not thereafter sell any Securities, without
     first offering such Securities to the Corporation in the manner set forth
     above.

          (D) Sections 9.2(A), (B), and (C) notwithstanding, the
     Corporation shall have no right of first refusal hereunder with respect to
     (i) any sales or transfers of Securities between and among the Investor
     and/or its Affiliates, (ii) any sale of less than five percent (5%) of the
     Securities then held by the Investor and its Affiliates (counting the
     shares of Preferred Stock according to the ratio at which they are
     convertible into Common Stock) in a private sale of Securities, and (iii)
     any sale of less than ten percent (10%) of such securities in a sale other
     than a private sale.

                                       36
<PAGE>
 
                                  ARTICLE X.
                                INDEMNIFICATION

     10.1 INDEMNIFICATION BY THE CORPORATION.    The Corporation (for the
purposes of this Article X, the "Indemnifying Party") shall indemnify the
Investor, its Affiliates, and their directors, officers, employees, agents and
counsel (collectively, the "Indemnified Parties") from, and hold each of them
harmless against, any and all actions, suits, losses, liabilities, claims and
damages, and expenses in connection therewith, including reasonable counsel's
fees and disbursements, whether foreseeable or unforeseeable ("Indemnified
Liabilities") to which any of them may become subject arising in connection with
this Agreement, the transactions contemplated hereby, and any action, omission
to act, occurrence or condition in connection herewith, regardless of (and
including Indemnified Liabilities arising from) any Indemnitee's sole, ordinary,
contributory or other negligence, other than gross negligence, including
Indemnified Liabilities that arise out of or relate to any:

          (A) actual or proposed use by the Corporation and any
     Subsidiaries of the proceeds;

          (B) exercise by the Investor or any Affiliate of their respective
     rights under either this Agreement or the other transactions contemplated
     by this Agreement, or the terms of the Preferred Stock;

          (C) Proceedings brought against the Investor or any Affiliate in
     their capacity as shareholders in the Corporation;

          (D) breach by the Corporation of this Agreement, including
     without limitation any inaccuracy in any representation or warranty of the
     Corporation under this Agreement, the Schedules hereto, or any agreement,
     certificate of other document delivered or to be delivered by the
     Corporation pursuant hereto in any respect, whether or not the Indemnified
     Party relied thereon or had Knowledge thereof and without regard to any
     qualifications contained in such representations and warranties limiting
     such representations and warranties (a) to matters within the Knowledge of
     the Corporation or any Subsidiary, or (b) as to materiality;

          (E) breach or nonfulfillment of any covenant, agreement or other
     obligation of the Corporation under this Agreement or any agreement or
     document delivered pursuant hereto; and

          (F) violation by the Corporation or any Subsidiaries of any legal
     requirement including, without limitation, applicable Environmental Laws.

                                       37
<PAGE>
 
     10.2 LIMITATIONS.  Section 10.1 hereof notwithstanding, no liability
under this Article X shall be incurred after (i) the applicable statute of
limitations with respect to liabilities arising under  Sections 2.15 and 2.18,
10.1(A), 10.1(B), 10.1(C), or Article IV or Article IX, or (ii) two (2) years
with respect to liabilities arising from breaches of any other Sections  of this
Agreement.

     10.3 NOTICE AND DEFENSE OF THIRD PARTY CLAIMS.  If any Proceeding shall be
brought or asserted under this Article X against an Indemnified Party in respect
of which indemnity may be sought under this Article from an Indemnifying Party,
the Indemnified Party shall give prompt written notice of such Proceeding to the
Indemnifying Party who shall assume the defense thereof, including the
employment of counsel reasonably satisfactory to the Indemnified Party and the
payment of all expenses; provided, that any delay or failure so to notify the
Indemnifying Party shall relieve the Indemnifying Party of its obligations
hereunder only to the extent, if at all, that it is prejudiced by reason of such
delay or failure.  In no event shall any Indemnified Party be required to make
any expenditure or bring any cause of action to enforce the Indemnifying Party's
obligations and liability under and  pursuant to the indemnifications set forth
in this Article.  In addition, actual or threatened action by a Governmental
Authority or other Person is not a condition or prerequisite to the Indemnifying
Party's obligations under this Article.  The Indemnified Party shall have the
right to employ separate counsel in any of the foregoing Proceedings and to
participate in the defense thereof, but the fees and expenses of such counsel
shall be at the expense of the Indemnified Party unless the Indemnified Party
shall in good faith determine that there exist actual or potential conflicts of
interest which make representation by the same counsel inappropriate.  The
Indemnified Party's right to participate in the defense or response to any
Proceeding should not be deemed to limit or otherwise modify the Indemnifying
Party's obligations under this Article.  In the event that the Indemnifying
Party, within five days after notice of any such Proceeding, fails to assume the
defense thereof, the Indemnified Party shall have the right to undertake the
defense, compromise or settlement of such Proceeding for the account of the
Indemnifying Party, subject to the right of the Indemnifying Party to assume the
defense of such Proceeding with counsel reasonably satisfactory to the
Indemnified Party at any time prior to the settlement, compromise or final
determination thereof.  Anything in this Article X to the contrary
notwithstanding, the Indemnifying Party shall not, without the Indemnified
Party's prior written consent, settle or compromise any Proceeding or consent to
the entry of any judgment with respect to any Proceeding for anything other than
money damages paid by the Indemnifying Party.  The Indemnifying Party may,
without the Indemnified Party's prior written consent, settle or compromise any
such Proceeding or consent to entry of any judgment with respect to any such
Proceeding that requires solely the payment of money damages by the Indemnifying
Party and that includes as an unconditional term thereof the release by the
claimant or the plaintiff of the Indemnified Party from all liability in respect
of such Proceeding.

                                       38
<PAGE>
 
                                  ARTICLE XI.
                              REGISTRATION RIGHTS

     11.1  DEMAND REGISTRATION.

           (A) At any time on or after the date five (5) years after the
     original date of this Agreement, the holders ("Holders") of a majority (as
     measured by voting rights) of the aggregate of (i) the Preferred Stock,
     whether now owned or hereafter acquired, and (ii) the Common Stock
     previously issued upon conversion of the Preferred Stock, or that is
     otherwise owned by holders of Preferred Stock (collectively, the
     "Registerable Stock," provided, however, that as used in this Agreement,
     "Registerable Stock" shall not include any Preferred Stock or Common Stock
     issued upon conversion of the Preferred Stock which may be immediately sold
     pursuant to Rule 144 promulgated under the Securities Act, taking into
     account any volume of sale limitations therein) may make a written request
     that the Corporation effect the registration under the Securities Act  (a
     "Demand Registration") of all or a portion of their shares of Registerable
     Stock.  Such written request (the "Registration Request") shall identify
     the Holders making such Request (the "Requesting Holders"), the number of
     shares of Registerable Stock that each of them proposes to sell in the
     Demand Registration, whether the sale is to be made pursuant to a firm
     commitment underwriting and, if so, the identities of the managing
     underwriter(s) selected (subject to this Article Section 11) by the
     Requesting Holders and, if not, the other intended method of disposition
     thereof.  The Corporation will promptly give written notice of such
     requested Demand Registration at least thirty (30) days prior to the
     anticipated filing date of the registration statement relating to such
     requested Demand Registration to all other Holders, and thereupon will use
     its best efforts to effect, as expeditiously as possible, the registration
     under the Securities Act of:

               (1)  the Registerable Stock that the Corporation has been so
                    requested to register by the Requesting Holders, then held
                    by the Requesting Holders; and

               (2)  all Registerable Stock of any other Holder entitled to
                    request a Demand Registration under Section 11.1, and,
                    subject to Section 11.2, all other Registerable Stock that
                    any other Holder entitled to request the Corporation to
                    effect an Incidental Registration (as such term is defined
                    in Section 11.2) pursuant to Section 11.2 (all such holders
                    of Registerable Stock, together with the Requesting Holder,
                    the "Selling Holders") has requested the Corporation to
                    register by written request received by the Corporation
                    within fifteen (15) days after the receipt by such Holders
                    of such written notice given by the Corporation,

                                       39
<PAGE>
 
all to the extent necessary to permit the disposition (in accordance with the
intended methods thereof as aforesaid) of the Registerable Stock so to be
registered; provided that, subject to Sections 11.1(C) and (E), and the next
sentence of this paragraph, the Corporation shall not be obligated to effect
more than two (2) Demand Registrations pursuant to this Section 11.1.  Except as
expressly provided hereinbelow, only Completed Demand Registrations (defined
hereinbelow) will constitute Demand Registrations for purposes of  this Section
11.1(A).

     Promptly after the expiration of the fifteen (15) day period referred to in
Section 11.1(A)(2), the Corporation will notify all the Selling Holders of the
other Selling Holders and the number of shares of Registerable Stock requested
to be included therein by each of them.  A majority of the Requesting Holders
(as measured by voting rights of their Registerable Stock) requesting a
registration under this Section 11.1(A) may, at any time prior to the effective
date of the registration statement relating to such registration, revoke such
request, without liability to any of the other Selling Holders, by providing a
written notice to the Corporation revoking such request, in which case such
request, so revoked, shall not be considered a Completed Demand Registration (as
hereinafter defined). Notwithstanding anything to the contrary contained in this
Article XI, the Corporation shall not be required to prepare, or file with the
SEC, a registration statement for any Demand Registration if the number of
shares of Registerable Stock for which requests for registration therein have
been received from Selling Holders is less than the number of shares which,
based on prevailing market prices, or a reasonable good faith estimate of the
price at which such shares of Registerable Stock will be sold pursuant to such
Demand Registration, will result in gross proceeds to the Selling Holders of
less than $3,000,000.  The Corporation shall promptly notify all Selling Holders
of its decision in this regard and such Demand Registration shall not be deemed
to be a Completed Demand Registration if the Corporation elects not to proceed
with such Demand Registration.

          (B) The Corporation will pay all Registration Expenses in
     connection with any Demand Registration, whether or not it constituted a
     Completed Demand Registration, unless such Registration Expenses are
     incurred in connection with a Demand Registration that is revoked by the
     Requesting Holder for reasons other than market conditions, underwriter
     recommendation or other reason not within the control of the Requesting
     Holder.

          (C) Except as otherwise provided in Section 11.1(A) above, a
     registration requested pursuant to this Section 11.1 shall not be deemed to
     have been effected unless the registration statement relating thereto (i)
     has become effective under the Securities Act and (ii) has remained
     effective for a period of at least ninety (90) days (or such shorter period
     in which all Registerable Stock of the Holders included in such
     registration has actually been sold thereunder) (a "Completed Demand
     Registration"); provided that if after any registration statement requested
     pursuant to this Section 11.1 becomes effective (i) such registration
     statement is interfered with by any stop order, injunction or other order
     or requirement of the SEC or other Governmental Authority due to the
     actions or omissions to act of the Corporation and (ii) less than 75% of
     the shares of Registerable Stock included in such registration have been
     sold thereunder, such a registration statement shall be at the sole

                                       40
<PAGE>
 
     expense of the Corporation and shall not be considered a Completed Demand
     Registration. Notwithstanding the foregoing, if any such interference was
     primarily due to any actions or omissions to act, of any of the Selling
     Holders, then irrespective of the number of shares of Registerable Stock
     that have been sold thereunder, such registration statement shall be
     considered a Completed Demand Registration.

          (D) If a Demand Registration involves a Public Offering and the
     managing underwriter shall advise the Corporation and the Requesting
     Holders that, in its view, (i) the number of securities requested to be
     included in such registration (including Common Stock which the Corporation
     proposes to be included which is not Registerable Stock) or (ii) the
     inclusion of some or all of the shares of Registerable Stock owned by the
     Selling Holders, in either case, exceeds the largest number of shares of
     Registerable Stock which can be sold without having a Material Adverse
     Effect on such offering, including the price at which such shares of
     Registerable Stock can be sold (the "Maximum Offering Size"), the
     Corporation will include in such registration, in the priorities listed
     below, up to the Maximum Offering Size:

               (1)  first, all shares of Registerable Stock requested to be
                    registered by the Requesting Holders and all other Selling
                    Holders (allocated, if necessary for the offering not to
                    exceed the Maximum Offering Size, pro rata among such
                    Persons on the basis of the relative number of shares of
                    Registerable Stock requested to be registered);

               (2)  second, all shares of Registerable Stock requested to be
                    included in such registration pursuant to Section 11.2; and

               (3)  third, any Common Stock proposed to be registered by the
                    Corporation.

          (E) If Registerable Stock representing at least 50% of the number
     of shares requested to be registered in the Demand Registration is not
     included in any Demand Registration, then such Requesting Holders may
     request, subject to the minimum offering size requirements in Section
     11.1(A), that the Corporation effect a registration under the Securities
     Act in addition to those required under Section 11.1(A) of all or part of
     such Holders' Registerable Stock in accordance with the provisions of this
     Section 11.1, and the Corporation shall pay the Registration Expenses in
     connection with such additional registration.

          (F) Notwithstanding anything to the contrary in this Article XI,
     if, following receipt by the Corporation of a written request for a Demand
     Registration from Holders of Registerable Stock and prior to the
     effectiveness thereof, any facts, events, developments or circumstances
     arise which have not been disclosed publicly and public disclosure of
     which, in the reasonable and good faith judgment of the board of directors
     of

                                       41
<PAGE>
 
     the Corporation, would cause material harm or damage or a loss of a
     material benefit or business or strategic opportunity to the Corporation,
     the Corporation may suspend further preparation and processing of such
     Demand Registration until the earlier of (i) sixty (60) days after written
     notice of such suspension is given to the Requesting Holders, or (ii) two
     (2) business days after the date that such information is publicly
     disclosed by the Corporation in a press release, a report filed under the
     Securities Exchange Act or in the registration statement being prepared for
     the Demand Registration, whichever first occurs.

          (G) Notwithstanding anything to the contrary contained in this
     Article XI, if a request is made by any Requesting Holders under Section
     11.1(A) that would obligate the Corporation to effectuate a Demand
     Registration of Registerable Stock, then, notwithstanding anything to the
     contrary contained in this Section 11.1, the Corporation may elect, within
     twenty (20) days of its receipt of such request, to use its best efforts to
     effectuate a Public Offering of its securities in place of the Demand
     Registration.  In such event, the Corporation shall notify the Requesting
     Holders thereof in writing prior to the expiration of such 20-day period
     and in that event (i) the Corporation shall be released from its obligation
     to effectuate the Demand Registration that was the subject of such
     Registration Request, provided that such Demand Registration shall not
     constitute a Completed Demand Registration for purposes of this Article XI,
     and (ii) the Public Offering shall constitute an Incidental Registration
     under Section 11.2 hereof and all Holders of Registerable Stock shall be
     entitled to include their Registerable Stock therein, subject, however, to
     the terms, conditions and limitations applicable to Incidental
     Registrations contained in this Article XI.

     11.2 INCIDENTAL REGISTRATION.

          (A) If the Corporation proposes to register any of its Common
     Stock under the Securities Act (other than a registration (i) on Form S-8
     or S-4 or any successor or similar forms, (ii) relating to Common Stock
     issuable upon exercise of employee stock options or in connection with any
     employee benefit or similar plan of the Corporation, or (iii) in connection
     with any acquisition by the Corporation of another business), whether or
     not for sale for its own account, it will each such time, subject to the
     provisions of Section 11.2(B), give prompt written notice at least thirty
     (30) days prior to the anticipated filing date of the registration
     statement relating to such registration to each Holder as of the date of
     this Agreement, which notice shall set forth such Holder's rights under
     this Section 11.2 and shall offer such Holders the opportunity to include
     in such registration statement such number of shares of Registerable Stock
     as each such Holder may request (an "Incidental Registration"). Upon the
     written request of any such Holder made within fifteen (15) days after the
     receipt of notice from the Corporation (which request shall specify the
     number of shares of Registerable Stock intended to be disposed of by such
     Holder), the Corporation will use its best efforts to effect the
     registration under the Securities Act of all Registerable Stock which the
     Corporation has been so requested to register by such Holders, to the
     extent requisite to permit the disposition of the Registerable Stock so to
     be registered; provided that (i) if such registration involves a Public
     Offering, all such Holders requesting to be included in the

                                       42
<PAGE>
 
     Corporation's registration must sell their Registerable Stock to the
     underwriters selected as provided in Section 11.4(F) on the same terms and
     conditions as apply to the Corporation and (ii) if, at any time after
     giving written notice of its intention to register any stock pursuant to
     this Section 11.2(A) and prior to the effective date of the registration
     statement filed in connection with such registration, the Corporation shall
     determine for any reason not to register such stock, the Corporation shall
     give written notice to all such Holders and, thereupon, shall be relieved
     of its obligation to register any Registerable Stock in connection with
     such registration (without prejudice, however, to rights of any Holder
     under Section 11.1).  No registration effected under this Section 11.2
     shall relieve the Corporation of its obligations to effect a Demand
     Registration to the extent required by Section 11.1.  The Corporation will
     pay all Registration Expenses in connection with each registration of
     Registerable Stock requested pursuant to this Section 11.2.

          (B) If a registration pursuant to this Section 11.2 involves a
     Public Offering (other than a Public Offering pursuant to a Demand
     Registration as to which the applicable provisions with respect to priority
     of inclusion in such offering are set forth in Section 11.1(D)) and the
     managing underwriter advises the Corporation that, in its view, the number
     of shares of Registerable Stock that the Corporation and such Holders
     intend to include in such registration exceeds the Maximum Offering Size,
     the Corporation will include in such registration, in the following
     priority, up to the Maximum Offering Size:

               (1)  first, so much of the Common Stock proposed to be registered
                    by the Corporation as would not cause the offering to exceed
                    the Maximum Offering Size; and

               (2)  second, all other shares of Registerable Stock requested to
                    be included in such registration pursuant to this Section
                    (allocated, if necessary for the offering not to exceed the
                    Maximum Offering Size, pro rata among such Persons on the
                    basis of the relative number of shares of Registerable Stock
                    requested to be so included).

     11.3 HOLDBACK AGREEMENTS.  If any registration of Registerable Stock shall
be in connection with a Public Offering, each Holder, whether it is or is not a
Selling Holder, agrees not to effect any public sale or distribution, including
any sale pursuant to Rule 144, or any successor provision, under the Securities
Act, of any Registerable Stock, and not to effect any such public sale or
distribution of any other Common Stock of the Corporation or of any stock
convertible into or exchangeable or exercisable for any Common Stock of the
Corporation (in each case, other than as part of such Public Offering) during
the fourteen (14) days prior to the effective date of such registration
statement (except as part of such registration) or during the period after such
effective date equal to the lesser of (i) such period of time as agreed between
such managing underwriter and the Corporation and (ii) one hundred eighty (180)
days.

                                       43
<PAGE>
 
     11.4 REGISTRATION PROCEDURES.  Whenever Holders of Registerable Stock
request that any shares thereof be registered pursuant to Section 11.1 or 11.2
("Participating Holders"), the Corporation will, subject to the provisions of
such Sections, use its best efforts to effect the registration and the sale of
such Registerable Stock in accordance with the intended method of disposition
thereof as quickly as practicable, and in connection with any such request:

          (A) The Corporation will as expeditiously as practicable prepare
     and file with the SEC a registration statement on any form for which the
     Corporation then qualifies or which counsel for the Corporation shall deem
     appropriate and which form shall be available for the sale of the
     Registerable Stock to be registered thereunder in accordance with the
     intended method of distribution thereof, and use its best efforts to cause
     such filed registration statement to become effective and to remain
     effective for a period of not less than ninety (90) days, or such lesser
     number of days within which the shares of Registerable Stock registered
     thereunder have been sold.

          (B) The Corporation will, if requested, prior to filing a
     registration statement or prospectus or any amendment or supplement
     thereto, furnish to each Participating Holder and each underwriter, if any,
     of the Registerable Stock covered by such registration statement copies of
     such registration statement as proposed to be filed, and thereafter the
     Corporation will furnish to such Participating Holder and underwriter, if
     any, such number of copies of such registration statement, each amendment
     and supplement thereto (in each case including all exhibits thereto and
     documents incorporated by reference therein), the prospectus included in
     such registration statement (including each preliminary prospectus) and
     such other documents as such Participating Holder or underwriter may
     reasonably request in order to facilitate the disposition of the
     Registerable Stock owned by such Participating Holder.

          (C) After filing of the registration statement, the Corporation
     will promptly notify each Participating Holder of any stop order issued or
     threatened by the SEC and take all reasonable actions required to prevent
     the entry of such stop order or to remove it, if entered.

          (D) The Corporation will use its best efforts to (i) register or
     qualify the Registerable Stock covered by such registration statement under
     such other securities or blue sky laws of such jurisdictions in the United
     States as any Participating Holder reasonably (in light of such
     Participating Holder's intended plan of distribution) requests and (ii)
     cause such Registerable Stock to be registered with or approved by such
     other Governmental Authorities or as may be necessary by virtue of the
     business and operations of the Corporation and do any and all other acts
     and things that may be reasonably necessary or advisable to enable such
     Participating Holder to consummate the disposition of the Registerable
     Stock owned by such Participating Holder; provided that the Corporation
     will not be required to (i) qualify generally to do business in any
     jurisdiction where it would not otherwise be required to

                                       44
<PAGE>
 
     qualify but for this paragraph (D), (ii) subject itself to taxation in any
     such jurisdiction, or (iii) consent to general service of process in any
     such jurisdiction.

          (E) The Corporation will immediately notify each Participating
     Holder at any time when a prospectus relating thereto is required to be
     delivered under the Securities Act, of the occurrence of an event requiring
     the preparation of a supplement or amendment to such prospectus so that, as
     thereafter delivered to the purchasers of such Registerable Stock, such
     prospectus will not contain an untrue statement of a material fact or omit
     to state any material fact required to be stated therein or necessary to
     make the statement therein, in light of the circumstances under which they
     were made, not misleading, and promptly prepare and shall make available to
     each such Participating Holder any such supplement or amendment, promptly
     after such supplement or amendment may be used in connection with the offer
     or sale of the Registerable Stock without thereby violating any federal or
     state securities laws.

          (F) (i) A majority in interest of the Requesting Holders
     exercising their Demand Registration rights will have the right, in their
     sole discretion, to select an underwriter or underwriters in connection
     with any Public Offering resulting from the exercise by the Requesting
     Holders of a Demand Registration, provided that the Corporation's approval
     of such underwriter or underwriters shall be required, with such approval
     not to be unreasonably withheld, and (ii) the Corporation will select an
     underwriter or underwriters in connection with any other Public Offering,
     provided that a majority in interest of the Requesting Holders must approve
     of such underwriter or underwriters, with such approval not to be
     unreasonably withheld.  In connection with any Public Offering, the
     Corporation will enter into customary agreements (including an underwriting
     agreement in customary form) and take such other actions as are reasonably
     required in order to expedite or facilitate the disposition of Registerable
     Stock in any such Public Offering, including the engagement of a "qualified
     independent underwriter" in connection with the qualification of the
     underwriting arrangements with the National Association of Securities
     Dealers ("NASD"), if required by the NASD.

          (G) Upon the execution of confidentiality agreements in form and
     substance satisfactory to the Corporation, the Corporation will make
     available for inspection by any Participating Holder and any underwriter,
     in each case participating in any disposition pursuant to a registration
     statement being filed by the Corporation pursuant to this Section 11.4, and
     any attorney, accountant or other professional retained by any such
     Participating Holder or underwriter (collectively, the "Inspectors"), all
     financial and other records, pertinent corporate documents and properties
     of the Corporation (collectively, the "Records") as shall be reasonably
     necessary to enable them to exercise their due diligence responsibility,
     and cause the Corporation's officers, directors and employees to supply all
     information reasonably requested by any Inspectors in connection with such
     registration statement. Records that the Corporation determines, in good
     faith, to be confidential and that it notifies the Inspectors are
     confidential shall not be disclosed by the Inspectors unless (i) the

                                       45
<PAGE>
 
     disclosure of such Records is necessary to avoid or correct a misstatement
     or omission in such registration statement of a material fact or (ii) the
     release of such Records is ordered pursuant to a subpoena or other order
     from a court of competent jurisdiction.  Each Participating Holder agrees
     that information obtained by it as a result of such inspections shall be
     deemed confidential and shall not be used by it as the basis for any market
     transactions in the securities of the Corporation or its Affiliates unless
     and until such is made generally available to the public.  Each
     Participating Holder further agrees that it will, upon learning that
     disclosure of such Records is sought in a court of competent jurisdiction,
     give notice to the Corporation and allow the Corporation, at its expense,
     to undertake appropriate action to prevent disclosure of the Records deemed
     confidential.

          (H) In connection with any Public Offering in which Holders
     participate, the Corporation will use its best efforts to furnish, or to
     cause to be furnished, to each such Participating Holder and to each such
     underwriter, if any, a signed counterpart, addressed to each such
     Participating Holder and such underwriter, of (i) an opinion or opinions of
     counsel to the Corporation and (ii) a comfort letter or comfort letters
     from the Corporation's independent public accountants, each in customary
     form and covering such matters of the type customarily covered by opinions
     or comfort letters, as the case may be, as a majority of such Participating
     Holders or the managing underwriter therefor reasonably requests.

          (I) The Corporation will otherwise use its best efforts to comply
     with all applicable rules and regulations of the SEC, and make available to
     the Holders, as soon as reasonably practicable, an earnings statement
     covering a period of twelve (12) months, beginning within three months
     after the effective date of the registration statement, which earnings
     statement shall satisfy the provisions of Section 11(a) of the Securities
     Act.

          (J) The Corporation may require each Participating Holder to, and
     each such Holder shall, as a condition to the inclusion of its Registerable
     Stock in the Registration Statement, promptly furnish in writing to the
     Corporation such information regarding the distribution of the Registerable
     Securities as the Corporation may from time to time reasonably request and
     such other information as may be legally required in connection with such
     registration.

          (K) Each such Participating Holder agrees that, upon receipt of
     any notice from the Corporation of the happening of any event of the kind
     described in Section 11.4(E), such Participating Holder will forthwith
     discontinue disposition of Registerable Securities pursuant to the
     registration statement covering such Registerable Securities until such
     Participating Holder's receipt of the copies of the supplemented or amended
     prospectus contemplated by Section 11.4(E), and, if so directed by the
     Corporation, such Participating Holder will deliver to the Corporation all
     copies, other than any permanent file copies then in such Participating
     Holder's possession, of the most recent prospectus covering such
     Registerable Stock at the time of receipt of such notice.  In the event
     that the Corporation shall give such notice, the Corporation shall extend
     the period referred to in Section 11.4(A))

                                       46
<PAGE>
 
     by the number of days during the period from and including the date of the
     giving of notice pursuant to Section 11.4(E) to the date when the
     Corporation shall make available to such Participating Holder a prospectus
     supplemented or amended to conform with the requirements of Section
     11.4(E).

     11.5 PARTICIPATION IN PUBLIC OFFERING.  No Person may participate in any
Public Offering hereunder unless such Person (a) agrees to sell such Person's
securities on the basis provided in any underwriting agreement approved by the
Persons entitled hereunder to approve such arrangements and (b) completes and
executes all questionnaires, powers of attorney, indemnities, underwriting
agreements and other documents reasonably required under the terms of such
underwriting arrangements and the provisions of this Agreement in respect of
registration rights.

     11.6 STOCK LEGENDS.  All stock certificates representing Preferred Stock
issued pursuant to the provisions of this Agreement or Common Stock issued upon
the conversion of such Preferred Stock shall bear a legend stating that such
shares are subject to the provisions of this Agreement.

                                 ARTICLE XII.
                                 MISCELLANEOUS

     12.1 EXPENSES.  Whether or not the purchase of the Preferred Stock herein
contemplated is consummated, the Corporation agrees to pay directly, on the
Second Closing Date, $30,000 of the Investor's reasonable expenses in connection
with preparation, execution and delivery of this Agreement and the transactions
contemplated hereby and thereby, including, but not limited to, the reasonable
out-of-pocket expenses of the Investor, charges and disbursements of special and
local counsel, duplicating costs, and all similar expenses relating to any
amendment, modification, waivers or consents requested pursuant to the
provisions hereof, and any amendments, waivers, or consents resulting from any
renegotiation or restructuring relating to the performance of the Corporation
under this Agreement. The Corporation also agrees that it will pay and save the
Investor harmless against any and all liability with respect to stamp and other
documentary taxes, if any, which may be payable, or which may be determined to
be payable in connection with the execution and delivery of this Agreement or
the Preferred Stock, whether or not any shares of  Preferred Stock are then
outstanding.  The obligations, if unpaid, of the Corporation under this Section
12.1 shall survive the issuance of the Preferred Stock.

     12.2 AMENDMENT AND MODIFICATION.  This Agreement may be amended, modified
or supplemented only by the written agreement of the parties hereto.

     12.3 WAIVER OF COMPLIANCE; CONSENTS.  Any failure of the Investor, on the
one hand, or the Corporation, on the other hand, to comply with any obligation,
covenant, agreement or condition herein may be waived by the Corporation or the
Investor, respectively, only by a written instrument signed by the party
granting such waiver, but such waiver or failure to insist upon strict
compliance with such obligation, covenant, agreement or condition shall not
operate as a waiver of, or estoppel with respect to, any subsequent or other
failure.  Whenever this Agreement requires or permits

                                       47
<PAGE>
 
consent by or on behalf of any party hereto, such consent shall be given in
writing in a manner consistent with the requirements for a waiver of compliance
as set forth in this Section 12.3.

     12.4 NOTICES.  All notices and other communications hereunder shall be in
writing and shall be deemed given if (i) delivered personally, (ii) mailed by
registered or certified mail (return receipt requested), whereupon notice shall
be deemed given three days after mailing, or (iii) sent by telecopy with
confirmation, to the other party at the following addresses (or at such other
address for a party as shall be specified by like notice; provided that notices
of a change of address shall be effective only upon receipt thereof):

     If to the Corporation, to:  Crown Energy
                                 215 South State, Suite 550
                                 Salt Lake City, Utah  84111
                                 Attn:  Mr. Jay Mealey
                                 Telecopy Number:  (801) 537-5609
 
     with a copy to:             Ray, Quinney & Nebeker
                                 79 South Main
                                 Salt Lake City, Utah  84145
                                 Attn:  Mr. Lorin Patterson
                                 Telecopy Number:  (801) 532-7543

     If to the Investor, to:     Enron Capital & Trade Resources Corp.
                                 P.O. Box 1188
                                 Houston, Texas  77002
                                 Attn:  Mr. Tony Valentine
                                 Telecopy Number:  (713) 646-8048

     with a copy to:             Liddell, Sapp, Zivley, Hill & LaBoon, L.L.P.
                                 3500 Texas Commerce Tower
                                 600 Travis
                                 Houston, Texas 77002
                                 Attention: Mr. H. William Swanstrom
                                 Telecopy number:  (713) 223-3717

     12.5 ASSIGNMENT.  This Agreement and all of the provisions hereof shall be
binding upon and inure to the benefit of the parties hereto and their respective
successors and permitted assigns. Neither this Agreement nor any of the rights,
interests or obligations hereunder shall be assigned by the Corporation without
the prior written consent of the Investor.  No permitted assignment shall
relieve the assigning party of any of its obligations hereunder.

                                       48
<PAGE>
 
     12.6  GOVERNING LAW.  This Agreement shall be governed by the laws of the
State of Texas (regardless of the laws that might otherwise govern under
applicable Texas principles of conflicts of law) as to all matters, including
but not limited to matters of validity, construction, effect, performance and
remedies.

     12.7 DISPUTE RESOLUTION.

          (A) If a dispute arises between the parties hereto regarding any
     issue that relates to this Agreement, the parties agree that their
     respective representatives shall meet and consult in good faith in an
     attempt to settle the dispute, within thirty (30) days of written notice
     thereof, as a condition precedent to the initiative of arbitration
     proceedings under the Commercial Arbitration Rules of the American
     Arbitration Association.

          (B) In the event the parties are unable to resolve their
     differences, such dispute shall be submitted to arbitration.  Arbitration
     shall be conducted in Houston, Texas, or Salt Lake City, Utah, under the
     Commercial Arbitration Rules then in force of the American Arbitration
     Association.  The arbitration proceedings shall be conducted before a panel
     of three members of the State Bar of the State in which the arbitration is
     conducted, actively engaged in commercial transactions.  The parties agree
     that discovery shall be limited and shall be handled expeditiously.
     Discovery proceedings available in litigation before the courts shall not
     apply in an arbitration conducted pursuant to this Agreement. However, each
     party shall produce relevant and non-privileged documents or copies thereof
     requested by the other party within the time limits set and to the extent
     required by order of the arbitrators.  All disputes regarding discovery
     shall be promptly resolved by the arbitrators.  Strict rules of evidence
     shall not apply in such arbitration.  The parties may offer such evidence
     as they desire and the arbitrators shall accept such evidence as the
     arbitrators deems relevant to the issues and accord it such weight as the
     arbitrators deem appropriate. In rendering the award, the arbitrators shall
     determine the respective rights and obligations of the parties according to
     the laws of the State of Texas.  The arbitrators shall award to the
     prevailing party, if any, as determined by the arbitrator all of the
     prevailing party's costs and fees. "Costs and fees" shall include the
     reasonable pre-award expenses of the arbitration, including arbitrator's
     fees, administrative fees, witness fees and attorney's fees.  The parties
     and arbitrators shall treat all aspects of the arbitration proceedings,
     including without limitation, discovery, testimony and other evidence,
     briefs and the award, as strictly confidential.  The arbitrators' decision
     may include any remedy contemplated by this Agreement.

          (C) It is the intent of the parties that, excepting extraordinary
     circumstances, any arbitration shall be concluded within four months of the
     date arbitration is commenced.  The parties may, upon agreement, extend the
     time limits or the arbitrators may determine that such an extension is
     necessary in the interest of justice.

                                       49
<PAGE>
 
           (D) The arbitrators will use their best efforts to issue a final
     award within forty-five days after closure of the proceedings.  The
     arbitration award shall be in writing and specify the factual and legal
     basis for the award.

           (E) Either party may appeal the arbitrators' award to an
     appellate arbitrator by filing with the AAA within twenty days after
     transmittal of the award, a written brief, not to exceed twenty pages
     stating the reason(s) why the arbitrators' decision should be reversed or
     modified.  The opposing party shall file with the AAA and serve on the
     appealing party within twenty days of receiving the appeal brief, and
     opposition brief not to exceed twenty pages.  The appellate arbitrator
     shall be appointed directly by the AAA without submission of a list by the
     parties, and shall be a retired judge of a court of record of the State in
     which the arbitration is conducted.

           (F) If no appeal is filed, the arbitrators' decision shall be
     final and binding upon the parties.  If an appeal is filed, the decision of
     the appellate arbitrator's decision shall be final and binding upon the
     parties.  Judgment upon the award of the arbitrators, if no appeal was
     made, or upon the decision of the appellate arbitrator, if an appeal was
     filed, may be ordered and enforced by a court of competent Jurisdiction.

     12.8  COUNTERPARTS.  This Agreement may be executed in counterparts, each
of which shall be deemed an original, but all of which together shall constitute
one and the same instrument.

     12.9  NO THIRD-PARTY BENEFICIARIES.  No provision of this Agreement is
intended to confer upon any Person other than the Parties hereto any rights or
remedies hereunder.

     12.10 INTERPRETATION.  The article and section headings contained in
this Agreement are solely for the purpose of reference, are not part of the
agreement of the parties and shall not in any way affect the meaning or
interpretation of this Agreement.

     12.11 ENTIRE AGREEMENT.  This Agreement, including the documents,
instruments and agreements referred to herein, and the agreements and documents
executed contemporaneously herewith embody the entire agreement and
understanding of the parties hereto in respect of the subject matter hereof.
There are no restrictions, promises, representations, warranties, covenants, or
undertakings, other than those expressly set forth or referred to herein or
therein.  This Agreement supersedes all prior agreements and understandings
between the parties with respect to such subject matter.

                                       50
<PAGE>
 
     12.12 ATTORNEYS' FEES.  In the event any party hereto institutes a lawsuit
against any other party hereto for a claim arising out of or to specifically
enforce this Agreement, the losing party shall pay the reasonable attorneys'
fees incurred by the prevailing party in connection with such lawsuit. The
obligations under this Section 12.12 are in addition to those described in
Article X.

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

                              CROWN ENERGY CORPORATION

                              By:    /s/ JAY MEALEY
                              Name:  Jay Mealey
                              Title: President


                              ENRON CAPITAL & TRADE RESOURCES
                              CORP.

                              By:    /s/ TONY A. VALENTINE
                              Name:  Tony A. Valentine
                              Title: Director


Appendix A - Definitions

Exhibit A - Series A Preferred Stock Designation of Rights and Preferences
Exhibit B - Warrant Agreement
Exhibit C - Form of Right of Co-Sale Agreement
Exhibit D - Environmental Laws

Schedule 1.1 - Issuance of Preferred Stock
Schedule 2.2 - Capitalization
Schedule 2.3 - Subsidiaries and Affiliates
Schedule 2.5 - Material Contracts
Schedule 2.7 - Debt
Schedule 2.8 - Compliance with Laws
Schedule 2.10 - Real Property
Schedule 2.15 - Intellectual Property
Schedule 2.20 - Financial Statements
Schedule 2.25 - Broker's Fees of the Corporation
Schedule 3.4 - Broker's Fees of the Investor

                                       51
<PAGE>
 
                                  APPENDIX A
                                  DEFINITIONS

     For the purposes of this Agreement, the following terms shall have the
meanings specified or referred to below whether or not capitalized when used in
this Agreement.  Where a defined term in this Agreement derives its meaning from
a statutory reference, for the purposes of this Agreement any regulatory
definition promulgated pursuant to the applicable statute shall be deemed to be
applicable to the extent its definition is broader than the statutory reference
and any reference or citation to a statute or regulation shall be deemed to
include any amendments to that statute or regulation and judicial and
administrative interpretations of it.  Any specific references to a law shall
include any amendments to it promulgated from time to time.

     Notwithstanding the following definitions, if any Environmental Law is
amended so as to broaden the meaning of any term defined in it, such broader
meaning shall apply subsequent to the effective date of such amendment.  To the
extent that the laws or regulations of the State of Texas establish a meaning
for a term defined in this Agreement through reference to federal Environmental
Law that is broader than the meaning specified in such federal Environmental
Law, such broader meaning set forth in the state Environmental Law shall apply.

     "Aboveground Storage Tank" means a nonvehicular device constructed of
nonearthen materials located above the ground surface or above the floor of a
structure that is below the ground and that is designed to contain Hazardous
Substances.

     "ACM" means asbestos or any material containing more than one percent (1%)
asbestos (as determined under Environmental Laws) that is friable or which bears
a risk of becoming friable if not abated.

     "Affiliate" means, with respect to a specified Person, (a) any Entity of
which such Person is an executive officer, director, partner, trustee or other
fiduciary or is directly or indirectly the Beneficial Owner of 10% or more of
any class of equity security thereof or other financial interest therein; (b) if
such Person is an individual, any relative or spouse of such individual, or any
relative of such spouse (such relative being related to the individual in
question within the second degree) and any Entity of which any such relative,
spouse, or relative of spouse is an executive officer, director, partner,
trustee or other fiduciary or is directly or indirectly the Beneficial Owner of
10% or more of any class of equity security thereof or other financial interest
therein; (c) if such Person is an Entity, any director, executive officer,
partner, trustee or other fiduciary or any direct or indirect Beneficial Owner
of 10% or more of any class of equity security of, or other financial interest
in, such Entity; or (d) any Person that directly, or indirectly through one or
more intermediaries, controls, is controlled by, or is under common control with
the Person specified.  For purposes of this definition, "executive officer"
means the president, any vice president in charge of a principal business unit,
division or function such as sales, administration, research and development, or
finance, and any other officer, employee or other Person who performs a policy
making function or has the same duties as those of a president or vice
president.  For purposes of this definition,

                                       52
<PAGE>
 
"control" (including "controlling", "controlled by" and "under common control
with") means the possession, direct or indirect, of the power to direct or cause
the direction of the management and policies of a Person, whether through the
ownership of voting securities, by contract or otherwise. When used without
reference to a particular Person, "Affiliate" means an Affiliate of the
Corporation or the Shareholders.

     "Agreement" means this Stock Purchase Agreement, including the schedules
and exhibits attached hereto, which are hereby incorporated herein.

     "Balance Sheet Date" shall have the meaning set forth in Section 2.22.

     "Beneficial Owner" shall have the meaning set forth in Rule 13d-3 of the
General Rules and Regulations promulgated under the Securities Exchange Act.

     "Best Efforts" means those efforts which a prudent individual desirous of
achieving a result would exert in similar circumstances to ensure that such
result is achieved as expeditiously as possible.

     "Business Facility" means any land, building, structure, installation,
equipment, pipe or pipeline (including any pipe into a sewer or publicly owned
treatment works), well, pit, pond, lagoon, impoundment, ditch, landfill, storage
container, motor vehicle, rolling stock, vessel or aircraft owned, leased,
operated or controlled by the Corporation or any Subsidiary.

     "CERCLA" means the Comprehensive Environmental Response Compensation and
Liability Act, 42 U.S.C. (S) 9601 et. seq., as amended or reauthorized from time
to time.

     "First Closing " shall have the meaning set forth in Section 1.2.

     "First Closing  Date" means the date and time as of which the First Closing
actually takes place.

     "Code" means the Internal Revenue Code of 1986, as amended from time to
time, or any successor law.

     "Common Stock" means any class or series of  the common stock, $0.02 per
share par value, of the Corporation.

     "Crown Asphalt Ridge" shall mean Crown Asphalt Ridge, L.L.C., a Utah
limited liability company of which the Corporation is a unitholder, and any
successors thereto.

     "Disposal" (or "disposed") shall have the meaning specified in RCRA.

                                       53
<PAGE>
 
     "Encumbrance" means any lien, pledge, hypothecation, charge, mortgage, deed
of trust, security interest, encumbrance, equity, trust, equitable interest,
claim, easement, right-of-way, servitude, right of possession, lease tenancy,
license, encroachment, burden, intrusion, covenant, infringement, interference,
proxy, option, right of first refusal, community property interest, legend,
defect, impediment, exception, condition, restriction, reservation, limitation,
impairment, imperfection of title, restriction on or condition to the voting of
any security, restriction on the transfer of any security or other asset,
restriction on the receipt of any income derived from any security or other
asset, and restriction on the possession, use, exercise or transfer of any other
attribute of ownership, whether based on or arising from common law,
constitutional provision, statute or contract.

     "Entity" means any corporation (including any non-profit corporation),
general partnership, limited partnership, joint venture, joint stock
association, estate, trust, cooperative, foundation, union, syndicate, league,
consortium, coalition, committee, society, firm, company or other enterprise,
association, organization or entity of any nature.

     "Environmental Claim" means any claim; demand; action; cause of action;
suit; liability, criminal liability, judgment, governmental or private
investigation relating to Remediation or compliance with Requirements of
Environmental Laws; proceeding; lien; personal injury; or property damage,
whether threatened, sought, brought or imposed, that is related to or that seeks
to recover costs related to, or seeks to impose liability regarding the
Corporation, any Business Facility or operations conducted at any Business
Facility for (i) improper use or treatment of wetlands, pinelands or other
protected lands or the protection or preservation of wildlife species; (ii)
noise; (iii) radioactive materials (including naturally occurring radioactive
materials); (iv) explosives; (v) pollution, contamination, preservation,
protection, remediation or clean-up of the air, surface water, ground water,
soil or wetlands; (vi) solid, gaseous or liquid waste generation, handling,
discharge, release, threatened release, treatment, storage, disposal or
transportation; (vii) exposure of persons or property to Hazardous Substances
and the effects thereof; (viii) the manufacture, processing, distribution in
commerce, use, treatment, storage, disposal or Remediation of Hazardous
Substances; (ix) injury to, death of or threat to the health or safety of any
person or persons caused directly or indirectly by Hazardous Substances; (x)
destruction caused directly or indirectly by Hazardous Substances or the release
of any Hazardous Substance on any property (whether real or personal); (xi) the
implementation of spill prevention and/or disaster plans relating to Hazardous
substances; (xii) community right-to-know and other disclosure laws or (xiii)
maintaining, disclosing or reporting information to Governmental Authorities
under any Environmental Law.  The term "Environmental Claim" also includes any
costs incurred in responding to efforts to require Remediation and any claim
based upon any asserted or actual breach or violation of any Requirements of
Environmental Law, or upon any event, occurrence or condition as a consequence
of which, pursuant to any Requirements of Environmental Law, (y) any owner,
operator or person having any interest in any Business Facility shall be liable
with respect to any Environmental Claim or otherwise suffer any loss or
disability or (z) any Business Facility shall be subject to any restriction on
use, ownership or transferability.  An "Environmental Claim" further includes a
proceeding to issue, modify, revoke or terminate an Environmental Permit, or to
adopt or amend a

                                       54
<PAGE>
 
regulation to the extent that such a proceeding or occurrence attempts to
redress violations of any applicable Environmental Permit or will materially
impair the Corporation's or any Subsidiary's current financial condition or its
ability to conduct its business operations or to continue in business as a going
concern.

     "Environmental Laws" means the laws described on Exhibit D attached hereto
and incorporated herein for all purposes and any and all other laws, rules,
regulations, ordinances, orders or guidance documents now or hereafter in effect
of any federal, state or local executive, legislative, judicial, regulatory or
administrative agency, board or authority or any judicial or administrative
decision relating thereto that relate to (i) wetlands, pinelands or other
protected lands or the protection and preservation of wildlife species; (ii)
noise; (iii) radioactive materials (including naturally occurring radioactive
materials); (iv) explosives; (v) pollution, contamination, preservation,
protection, or clean-up of the air, surface water, ground water, soil or
wetlands; (vi) solid, gaseous or liquid waste generation, handling, discharge,
release, threatened release, treatment, storage, disposal or transportation;
(vii) exposure of persons or property to Hazardous Substances and the effects
thereof; (viii) injury to, death of or threat to the safety or health of
employees and any other persons; (ix) the manufacture, processing, distribution
in commerce, use, treatment, storage, disposal or Remediation of Hazardous
Substances; (x) destruction, contamination of, or the release onto any property
(whether real or personal) directly or indirectly connected with Hazardous
Substances; (xi) the implementation of spill prevention and/or disaster plans
relating to Hazardous Substances; (xii) community right-to-know and other
disclosure laws or (xiii) maintaining, disclosing or reporting information to
Governmental Authorities under any Environmental Law.

     "Environmental Permits" means any permit, license, certificate,
registration, notice of intent, identification number, exemption, approval or
other authorization relating to the business or operations of the Corporation or
any Subsidiary, or any Business Facility required by any Environmental Law.

     "ERISA" means the Employee Retirement Income Security Act of 1974, as
amended from time to time, or any successor law, and all rules, regulations,
rulings and interpretations adopted by the Internal Revenue Service or the
Department of Labor thereunder.

     "Escrow Agreement" shall mean the escrow agreement between the parties
hereto executed simultaneously herewith in the form attached hereto as Exhibit
C.
 
     "Exchange Act" shall mean the Securities Exchange Act of 1934, as amended.

     "GAAP" means generally accepted United States accounting principles,
consistently applied. As applied to the Corporation, GAAP means those accounting
principles and practices (a) which are recognized as such by the Financial
Accounting Standards Board, (b) which are applied for all periods after the date
hereof in a manner consistent with the manner in which such principles and
practices were applied to the most recent audited financial statements of the
Corporation furnished to the Purchaser, and (c) which are consistently applied
for all periods after the date hereof so as to

                                       55
<PAGE>
 
reflect properly the financial condition, and results of operations and cash
flows, of the Corporation.

     "Governmental Authority" means any foreign governmental authority, the
United States of America, any State of the United States, any local authority
and any political subdivision of any of the foregoing, any multi-national
organization or body, any agency, department, commission, board, bureau, court
or other authority thereof, or any quasi-governmental or private body
exercising, or purporting to exercise, any executive, legislative, judicial,
administrative, police, regulatory or taxing authority or power of any nature.

     "Governmental Authorization" means any permit, license, franchise,
approval, certificate, consent, ratification, permission, confirmation,
endorsement, waiver, certification, registration, qualification or other
authorization issued, granted, given or otherwise made available by or under the
authority of any Governmental Authority or pursuant to any Legal Requirement.

     "Guymon License" shall mean that License Agreement dated as of January 20,
1989, between Park Guymon Enterprises, Inc., as licensor, and Crown Asphalt
Corporation, as licensee, covering the state of Utah, and including any
amendments thereto.

     "Hazardous Substances" means (i) those substances included within the
statutory and/or regulatory definitions of "hazardous substance," "hazardous
waste," "extremely hazardous substance," "regulated substance," "contaminant,"
"hazardous materials" or "toxic substances," under any Environmental Law, (ii)
those substances listed in 49 C.F.R. 172.101 and in 40 C.F.R. Part 302; (iii)
any material, waste or substance which is (A) petroleum, oil or a fraction or
constituent thereof, except for those naturally occurring in the oil sands in
place in their undisturbed condition, (B) ACM, (C) polychlorinated biphenyls,
(D) formaldehyde, (E) designated as a "hazardous substance" pursuant to 33
U.S.C. (S) 1321 or listed pursuant to 33 U.S.C. (S) 1317; (F) explosives or (G)
radioactive materials (including naturally occurring radioactive materials);
(iv) Solid Wastes that pose imminent and substantial endangerment to health or
the environment; (v) radon gas in an ambient air concentration exceeding four
picocuries per liter (4 pCi/l); (vi) such other substances, materials, or wastes
that are or become classified or regulated as hazardous or toxic under any
federal, state or local law or regulation.

     "Intellectual Property Assets" shall have the meaning set forth in Section
3.17.

     "Knowledge" or "known" - An individual shall be deemed to have "knowledge"
of or to have "known" a particular fact or other matter if (i) such individual
is actually aware of such fact or other matter; or (ii) a prudent individual
could be expected to discover or otherwise become aware of such fact or other
matter in the course of conducting a reasonably comprehensive investigation
concerning the truth or existence of such fact or other matter.  An Entity shall
be deemed to have "knowledge" of or to have "known" a particular fact or other
matter if any individual who is serving, or who has at any time served, as a
director, officer, employee, general partner, executor or trustee (or in any
similar capacity) of such Entity has, or at any time had, knowledge of such fact
or other matter.  Each such Person is understood to have undertaken a separate
investigation in connection with the

                                       56
<PAGE>
 
transactions contemplated hereby to determine the existence or absence of facts
or other matters in any statement qualified as "known" by such Person or the
"knowledge" of such Person.

     "Legal Requirement" means any law, statute, ordinance, decree, requirement,
Order, treaty, proclamation, convention, rule or regulation (or interpretation
of any of the foregoing) of, and the terms of any Governmental Authorization
issued by, any Governmental Authority.

     "Liability" means any debt, obligation, duty or liability of any nature
(including any unknown, undisclosed, unfixed, unliquidated, unsecured,
unmatured, unaccrued, unasserted, contingent, conditional, inchoate, implied,
vicarious, joint, several or secondary liability), regardless of whether such
debt, obligation, duty or liability would be required to be disclosed on a
balance sheet prepared in accordance with GAAP.

     "Loss" means any loss, damage, injury, harm, detriment, decline in value,
lost opportunity, Liability, exposure, claim, demand, Proceeding, settlement,
judgment, award, punitive damage award, fine, penalty, Tax, fee, charge, cost or
expense (including, without limitation, costs of attempting to avoid or in
opposing the imposition thereof, interest, penalties, costs of preparation and
investigation, and the fees, disbursements and expenses of attorneys,
accountants and other professional advisors), as well as with, respect to
compliance with the Requirements of Environmental Law, expenses of Remediation
and any other remedial, removal, response, abatement, cleanup, investigative,
monitoring, or record keeping costs and expenses.

     "MCNIC" means MCNIC Pipeline & Processing Company and its parent
corporation, MCN Energy Group.

     "Material Adverse Effect" means any material adverse change in the
condition (financial or otherwise), business, operations, properties, prospects,
assets or Liabilities of the Corporation or any Subsidiary (whether or not
covered by insurance).

     "Operating Agreement" means the Operating Agreement between MCNIC Pipeline
and Processing Company and Crown Asphalt Corporation relating to the operation
of the Project, dated September 3, 1997.

     "Order" means any order, judgment, injunction, edict, decree, ruling,
pronouncement, determination, decision, opinion, sentence, subpoena, writ or
award issued, made, entered or rendered by any court, administrative agency or
other Governmental Authority or by any arbitrator.

     "Ordinary Course of Business" means an action taken by a Person shall be
deemed to have been taken in the "Ordinary Course of Business" if:

          (i)   such action is recurring in nature, is consistent with the past
practices of such Person and is taken in the ordinary course of the normal day-
to-day operations of such Person;

                                       57
<PAGE>
 
          (ii)  if such Person is an Entity such action is not required to be
authorized by the board of directors of such Entity (or by any Person or group
of Persons exercising similar authority), is not required to be authorized by
the shareholders or other equity owners (if any) of such Entity, and does not
require any other separate or special authorization of any nature; and

          (iii) such action is similar in nature and magnitude to actions
customarily taken, without any separate or special authorization, in the
ordinary course of the normal day-to-day operations of other persons that are in
the same line of business as such Person.

     "Organizational Documents" means, with respect to a corporation, the
certificate of incorporation, articles of incorporation and bylaws of such
corporation; with respect to a general partnership, the partnership agreement
establishing such partnership; with respect to a joint venture, the joint
venture agreement establishing such joint venture; with respect to a limited
partnership, the limited partnership agreement and the certificate of limited
partnership of such limited partnership; with respect to a trust, the instrument
establishing such trust; and with respect to any other Entity, any charter
document or other document executed, adopted, approved, ratified or filed in
connection with the formation, creation, constitution or organization of such
Entity, in each case including any and all amendments or modifications thereof.

     "PBGC" means the Pension Benefit Guaranty Corporation, or any successor
thereto.

     "Person" means any individual, Entity or Governmental Authority.

     "Plan" means any "employee benefit plan," as defined in Section 3(3) of
ERISA, that covers any employee or former employee of any Corporation or any of
its Subsidiaries.

     "Proceeding" means any action, suit, litigation, arbitration, lawsuit,
claim, proceeding (including any civil, criminal, administrative, investigative
or appellate proceeding and any informal proceeding), prosecution, contest,
hearing, inquiry, inquest, audit, examination, investigation, challenge,
controversy or dispute commenced, brought, conducted or heard by or before, or
otherwise involving, any Governmental Authority or any arbitrator.

     "Public Offering" means an underwritten public offering of Common Stock of
the Corporation pursuant to an effective registration statement under the
Securities Act.

     "RCRA" means the Resource Conservation and Recovery Act, 42 U.S.C. (S)(S)
6901 et seq., as amended from time to time.

     "Registration Expenses" means (i) all registration and filing fees, (ii)
fees and expenses of compliance with securities and blue sky laws (including
reasonable fees and disbursements of counsel in connection with blue sky
qualifications), (iii) printing expenses, (iv) internal expenses of the
Corporation (including, without limitation, salaries and expenses of its
officers and employees performing legal or accounting duties), (v) reasonable
fees and disbursements of counsel for the

                                       58
<PAGE>
 
Corporation and customary fees and expenses for independent certified public
accountants retained by the Corporation (including the expenses of any comfort
letter or letters requested pursuant to any provision of this Agreement), (vi)
the reasonable fees and expenses of any special experts retained by the
Corporation in connection with such registration, (vii) reasonable fees and
expenses of one counsel for the Requesting Holders, (viii) fees and expenses in
connection with any review of underwriting arrangements by the NASD, including
fees and arrangements by a "qualified independent underwriter" and (ix) all
other fees and disbursements of underwriters customarily paid by issuers or
sellers of securities; but shall not include any underwriting fees, discounts or
commissions attributable to the sale of the Registerable Stock, or any out-of-
pocket expenses (except as set forth in clause (vii) above) of the Requesting
Holders (or the agents who manage their accounts) or any fees and expenses of
underwriter's counsel.

     "Release" (or "released") shall have the meaning specified in CERCLA.

     "Remediation" means any action necessary to ensure compliance with the
Requirements of Environmental Law including (i) the removal and disposal or
containment (if containment is practical under the circumstances and is
permissible within Requirements of Environmental Law) or monitoring of any and
all Hazardous Substances at any Business Facility; (ii) the taking of reasonably
necessary precautions to protect against the release or threatened release of
Hazardous Substances at, on, in, about, under, within or near the air, soil,
surface water, groundwater or soil vapor at any Business Facility or any
surrounding areas thereof; (iii) any action necessary to mitigate the usurpation
of wetlands, pinelands or other protected land or reclaim the same or to protect
and preserve wildlife species; (iv) any action necessary to meet the
requirements of to an Environmental Permit or (v) any other action reasonably
required to satisfy Requirements of Environmental Law imposed upon the
Corporation, any Subsidiary, any Business Facility and/or any operation thereon.

     "Requirements of Environmental Law" means all requirements, conditions,
restrictions or stipulations of Environmental Laws imposed upon or related to
the Corporation, any Subsidiary, any Business Facility or any operation
conducted on any Business Facility.

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

     "Solid Waste" shall have the meaning ascribed to it in RCRA.

     "Subsidiary" means, with respect to any Person, any corporation,
partnership, joint venture, joint stock association, business trust or other
Entity which is, directly or indirectly, owned or controlled by another Person
or any other Person which is itself a Subsidiary within the meaning of this
definition, including, without limitation, all Persons the majority of the
Capital Stock or voting stock of which is directly or indirectly owned by the
Corporation.

     "Tax" means any tax (including without limitation any income tax, franchise
tax, capital gains tax, gross receipts tax, value-added tax, surtax, excise tax,
ad valorem tax, transfer tax, stamp tax, sales tax, use tax, property tax,
inventory tax, occupancy tax, withholding tax, payroll tax, gift tax,

                                       59
<PAGE>
 
estate tax or inheritance tax), levy, assessment, tariff, impost, imposition,
toll, duty (including any customs duty), deficiency or fee, and any related
charge or amount (including any fine, penalty or interest), imposed, assessed or
collected by or under the authority of any Governmental Authority or payable
pursuant to any tax-sharing agreement or pursuant to any other contract relating
to the sharing or payment of any such tax, levy, assessment, tariff, impost,
imposition, toll, duty, deficiency or fee.

     "Tax Return" means any return (including any information return), report,
statement, declaration, schedule, notice, notification, form, certificate or
other document or information filed with or submitted to, or required to be
filed with or submitted to, any Governmental Authority in connection with the
determination, assessment, collection or payment of any Tax or in connection
with the administration, implementation or enforcement of or compliance with any
Legal Requirement relating to any Tax.

     "Threatened" - A Proceeding, dispute or other matter shall be deemed to
have been "threatened" if any demand or statement shall have been made (orally
or in writing) or any notice shall have been given (orally or in writing), or if
any other event shall have occurred or any other circumstances shall exist, that
might lead a prudent Person to conclude that such a Proceeding, dispute or other
matter might be asserted, commenced, taken or otherwise pursued in the future;
provided, however, when used in the context of "threatened releases", each term
shall have the meaning ascribed to it under Environmental Laws.

     "Underground Storage Tank" shall have the meaning ascribed to it in RCRA.

     Terms which are defined in the body of this Agreement shall have the
meanings specified therein.

                                       60
<PAGE>
 
                                   EXHIBIT A

                           SERIES A PREFERRED STOCK

                                       61
<PAGE>
 
                                   EXHIBIT B

                               MAKE-UP WARRANTS

                                       62
<PAGE>
 
                                   EXHIBIT C
                      FORM OF RIGHT OF CO-SALE AGREEMENT

                                       63
<PAGE>
 
                                   EXHIBIT D
                              ENVIRONMENTAL LAWS


Comprehensive Environmental Response, Compensation and Liability Act of 1980, 42
U.S.C. (S)(S)9601 et. seq. as amended by the Superfund Amendments and
Reauthorization Act of 1986.

Toxic Substances Control Act, 15 U.S.C. (S)2601 et. seq.

Clean Water Act, 33 U.S.C. (S)1251 et. seq. as amended by the Oil Pollution Act
of 19090, Pub. L. No. 101-380, 104 Stat. 484 (1990).

Safe Drinking Water Act, 42 U.S.C. (S)(S)300f-300j.

Clean Air Act, 42 U.S.C. (S)7401 et. seq.

Resource Conservation and Recovery Act of 1976, 42 U.S.C. (S)(S)6901 et. seq.

The Oil Pollution Act of 1990, Pub.L. No. 101-380, 104 Stat. 484 (1990).

Hazardous Materials Transportation Act, 49 U.S.C. (S)1801 et. seq.

Williams-Steiger Occupational Safety and Health Act

Endangered Species Act, 16 U.S.C. (S)1531 et. seq. and its state counterpart, if
any.

Texas Asbestos Health Protection Act

Texas Water Code

Texas Health and Safety Code

Texas Natural Resources Code

Statewide Rules for Oil, Gas and Geothermal Operations (promulgated by the
Railroad Commission of Texas)

The laws cited above shall be deemed to include any successor statutes and
amendments thereto and rules and regulations promulgated thereunder from time to
time.

                                       64
<PAGE>
 
                                 SCHEDULE 1.1


                                   Tranche 1

                           Series A Preferred Stock
                 45,000 shares at a per share price of $10.00



                                   Tranche 2

                           Series A Preferred Stock
                 455,000 shares at a per share price of $10.00

            Warrants will also be issued with terms and conditions
                  as set forth in Exhibit B of the Agreement

                                       65

<PAGE>
 
                                                                       EXHIBIT 2
                                                             Document No. 161043


                       CERTIFICATE OF THE VOTING POWERS,
            DESIGNATIONS, PREFERENCES AND RELATIVE, PARTICIPATING,
             OPTIONAL OR OTHER SPECIAL RIGHTS, AND QUALIFICATIONS,
         LIMITATIONS AND RESTRICTIONS THEREOF, OF SERIES A CUMULATIVE
                          CONVERTIBLE PREFERRED STOCK

                                      OF

                           CROWN ENERGY CORPORATION


     Designation of Rights and Preferences of Preferred Stock by Resolution of
the Board of Directors providing for an issue of 500,000 shares of Preferred
Stock, par value $0.005 per share, liquidation value $10.00 per share, plus all
accrued and unpaid dividends, if any, and stated value $10.00 per share (as
adjusted to reflect any stock splits, reverse stock splits or dividends thereon,
the "Stated Value"), designated "$10 Class A Cumulative Convertible Preferred
Stock" pursuant to Section 16-10a-621 of the Utah Revised Business Corporation
Act.

     I, Jay Mealey, President of Crown Energy Corporation (hereinafter referred
to as the "Corporation"), a corporation organized and existing under the Utah
Revised Business Corporation Act, in accordance with the provisions of Section
16-10a-621 thereof, do HEREBY CERTIFY:

     That pursuant to authority conferred upon the Board of Directors by the
Articles of Incorporation of the Corporation (hereinafter referred to as the
"Articles of Incorporation") as in effect on the date thereof, said Board of
Directors, at a meeting duly convened and held on September 2, 1997, adopted
resolutions providing for the issuance of 500,000 shares of Preferred Stock, par
value of $0.005 per share, to be designated "$10 Series A Cumulative Convertible
Preferred Stock," which resolutions are as follows:

          RESOLVED, that pursuant to the authority vested in the Board of
     Directors of the Corporation by the Articles of Incorporation, the Board of
     Directors does hereby provide for the issue of a series of Preferred Stock,
     par value $0.005 per share, of the Corporation, to be designated "$10
     Series A Cumulative Convertible Preferred Stock" (the "Preferred Stock"),
     such issue to consist of 500,000 shares, and to the extent that the
     designations, powers, preferences and relative and other special rights and
     the qualifications, limitations and restrictions of the Preferred Stock are
     not stated and expressed in the Articles of Incorporation, does hereby fix
     and herein state and express the designations, powers, preferences and
     relative and other special rights and the qualifications, limitations and
     restrictions thereof, as follows:

               1.   Description. The Corporation shall issue 500,000 shares of
          cumulative, convertible, redeemable Preferred Stock with a par value
          of $0.005 per share and a liquidation value of $10.00 per share, plus
          all accrued and unpaid dividends, if any (such liquidation value to be
          adjusted as the result of any stock splits, reverse stock 
<PAGE>
 
          splits or dividends thereon (as adjusted, the "Liquidation Value")).

               2.   Rank.  Except as approved by the holders of Preferred Stock
          pursuant to Article 7(B) hereof, (i) the Preferred Stock shall, with
          respect to rights of liquidation and dividends, be senior to all other
          capital stock issued by the Corporation, and (ii) no capital stock may
          be issued of the same series as the Preferred Stock.

               3.   Dividends.

               (A)  Amount; Time.  The holders of the outstanding shares of
          Preferred Stock shall be entitled to receive, when and as declared by
          the Board of Directors, out of any funds legally available therefor,
          quarterly dividends at a rate of eight percent (8%) per annum, based
          on the Preferred Stock's Stated Value, which shall accrue from the
          date of issuance of such shares.   All accrued and unpaid dividends
          shall be payable quarterly on January 1, April 1, July 1 and October 1
          of each year commencing on January 1, 1998, to such shareholders of
          record on a date not exceeding sixty (60) days preceding each such
          dividend payment date, fixed by the Board of Directors in advance of
          payment of such dividend.  Each quarterly dividend will be paid in
          cash or in Common Stock (as defined below), and if paid in Common
          Stock, using the Fair Market Value (as defined below in Article 12) of
          such Common Stock.  The holders of the Preferred Stock may designate
          which shares will have dividends paid in cash and which shares will
          have dividends paid in Common Stock, and must make this designation in
          writing to the Corporation at least thirty (30) days prior to the
          quarterly dividend payment date.  Any shares of Preferred Stock for
          which a timely dividend designation has not been made will be paid a
          cash dividend.

               (B)  Accumulation of Dividends.  Dividends on the shares of
          Preferred Stock shall accrue and be cumulative from the date of issue
          based on a 360-day year consisting of twelve 30-day months, whether or
          not (i) dividends on such shares are declared or (ii) there shall be
          funds legally available to the Corporation for the payment of
          dividends.  Accumulated but unpaid dividends shall bear interest at a
          rate of eight percent (8%) per annum.

               (C)  Limitations.  So long as any shares of Preferred Stock shall
          remain outstanding, no dividend or other distribution whatsoever shall
          be declared or paid upon or set apart for the Corporation's common
          stock, as such stock may be constituted from time to time (the "Common
          Stock"), unless all accrued and unpaid dividends on the Preferred
          Stock have been paid.  For so long as any shares of Preferred Stock
          remain outstanding, dividends shall not be declared, or paid upon or
          set apart on any preferred stock issued on parity with the Preferred
          Stock with respect to dividend rights ("Dividend Parity Preferred
          Stock") unless also declared or paid,

                                       2
<PAGE>
 
          respectively, on the Preferred Stock.  Any repurchase, redemption or
          retirement of Dividend Parity Preferred Stock shall be made on a pro
          rata basis with respect to the Preferred Stock unless and until all
          accrued and unpaid dividends and sinking fund repayments (as described
          in Article 5(B)) on the Preferred Stock have been made or paid.

          4.   Priority of Preferred Stock in the Event of Dissolution.

               (A) Priority. In the event of any liquidation or dissolution and
          winding up of the affairs of the Corporation, whether voluntary or
          otherwise, after payment or provision for payment of the debts and
          other liabilities of the Corporation, the holders of the Preferred
          Stock shall be entitled to receive the Liquidation Value in cash for
          each share of Preferred Stock, before any distribution shall be made
          to the holders of the Common Stock or any other class or series of
          stock of the Corporation ranking junior to the Preferred Stock with
          respect to liquidation rights. If upon any liquidation, dissolution or
          winding up of the Corporation, the assets distributable among the
          holders of the Preferred Stock and other preferred stock issued on
          parity with the Preferred Stock with respect to liquidation rights
          ("Liquidation Parity Preferred Stock") (any capital stock of the
          Corporation which is either Liquidation Parity Preferred Stock or
          Dividend Parity Preferred Stock, or both, is referred to herein
          collectively as "Parity Preferred Stock") shall be insufficient to
          permit the payment in full of the Liquidation Value to all of the
          holders of all the Preferred Stock and of all preferential amounts
          payable to all holders of such Liquidation Parity Preferred Stock,
          then the entire assets of the Corporation thus distributable shall be
          distributed ratably among the holders of the Preferred Stock in
          proportion to the respective amounts that would be payable on said
          shares of Preferred Stock and Liquidation Parity Preferred Stock if
          such assets were sufficient to permit payment in full.

               (B)  Events Treated as Liquidation.  A sale of all or
          substantially all of the Corporation's assets, or a merger or a
          consolidation in which control of the Corporation is transferred
          ("Change in Control Event"), may, at the option of each holder of the
          Preferred Stock, be treated as a liquidation for the purposes of
          Article 4(A).  In the alternative, at the option of each holder of the
          Preferred Stock, such holder has the right to receive, as the result
          of the Change in Control Event, either (i) preferred stock in the
          surviving entity with equivalent value, rights and preferences as the
          Preferred Stock, or (ii) the kind and number of shares of stock or
          other securities or property to which such holder would have been
          entitled if such holder had held the number of shares of Common Stock
          issuable upon the conversion of such holder's Preferred Stock
          immediately prior to such Change in Control Event. A transaction will
          not be a Change in Control Event if the shareholders of the
          Corporation before giving effect to any such merger, consolidation or
          sale, lease or disposition of assets beneficially owns at least 51% of
          the outstanding shares of

                                       3
<PAGE>
 
          capital stock of, or other equity interest in, the surviving or
          acquiring corporation or entity, calculated on a fully-diluted basis.
          The Corporation must provide written notice to each of the holders of
          Preferred Stock of the Change in Control Event at least forty-five
          (45) days prior to the record date for any such event.  The Preferred
          Stockholders' rights with respect to a Change in Control Event shall
          vest ten (10) days before the occurrence of the Change in Control
          Event; provided, however, that if the Change in Control Event does not
          in fact occur for any reason, the rights of Preferred Stockholders
          arising therefrom shall be voided to the extent a distribution
          pursuant to Article 4(A) hereof with respect to such holders has not
          previously occurred.

               5.   Redemption.

               (A)  Optional Redemption.  Subject to the holders' right to
          convert the Preferred Stock into Common Stock, the Corporation may
          redeem the Preferred Stock at any time against the payment of accrued
          and unpaid dividends, if any, at a redemption price equal to a
          percentage of the Stated Value as follows:

                    (i)    if the redemption occurs within thirty-six (36)
               months (the last day included) of the date of issuance of the
               Preferred Stock, one-hundred and thirty percent (130%) of the
               Stated Value,

                    (ii)   if the redemption occurs after thirty-six (36) months
               from, but within forty-eight (48) months (the last day included)
               of, the date of issuance of the Preferred Stock, one-hundred and
               fifteen percent (115%) of the Stated Value,

                    (iii)  if the redemption occurs after forty-eight (48)
               months from, but within sixty (60) months (the last day included)
               of, the date of issuance of the Preferred Stock, one-hundred and
               ten percent (110%) of the Stated Value,

                    (iv)   if the redemption occurs after sixty (60) months from
               the date of issuance of the Preferred Stock, at one-hundred
               percent (100%) of the Stated Value.

               The Corporation is only entitled to make three separate
          redemptions pursuant to this Article 5(A).  Each of such redemptions
          must be for at least 100,000 shares of Preferred Stock (as adjusted to
          reflect stock splits, stock dividends, recapitalizations and the
          like).

               Notwithstanding the foregoing (including the foregoing
          requirements as to number of shares redeemed), if the Investor elects
          not to consummate the Second Closing, then the Corporation shall have
          the right to redeem the Preferred Stock, at

                                       4
<PAGE>
 
     any time, at the Liquidation Value of such Preferred Stock.  This
     redemption right must be exercised by the Corporation with respect to
     particular shares of Preferred Stock no later than sixty (60) days after a
     holder's attempted exercise of its conversion rights with respect to such
     shares pursuant to Article 6(A) hereof.  If the Corporation does not
     exercise such redemption right within such time, then such holder's
     exercise of its conversion rights shall be effective immediately in
     accordance with the terms of Article 6 hereof.

               (B)  Mandatory Redemption at Option of Holder. The holders of the
          Preferred Stock may, at their option, require the Corporation to
          redeem, at a per share price no lower than the Stated Value, 125,000
          shares of Preferred Stock (as adjusted to reflect stock splits, stock
          dividends and the like) on the eighth anniversary of the issue of the
          Preferred Stock, 125,000 shares of Preferred Stock (as adjusted to
          reflect stock splits, stock dividends and the like) on the ninth
          anniversary of the issue of the Preferred Stock (plus any shares
          eligible for redemption on the eighth anniversary that were not
          redeemed), and all remaining outstanding shares of Preferred Stock on
          the tenth anniversary of the issue of the Preferred Stock.

               (C)  Redemption Subject to Applicable Law.  Notwithstanding the
          redemption right granted to the holders of the Preferred Stock in
          Articles 5(A) and 5(B), the Corporation shall be required to redeem
          the Preferred Stock only if funds are legally available therefor under
          the Utah Revised Business Corporation Act

               If a notice of redemption is timely given and the Corporation is
          unable to redeem the shares of Preferred Stock that are the subject of
          such notice of redemption under the provisions of the immediately
          preceding paragraph, the obligation of the Corporation to redeem such
          shares of Preferred Stock shall continue until the Corporation is
          permitted to redeem such Preferred Stock in accordance with this
          Article 5.

               (D)  Redemption of Parity Preferred Stock.  The Corporation shall
          not repurchase, redeem or retire any shares of Parity Preferred Stock,
          unless a pro rata amount of the Preferred Stock is simultaneously
          repurchased, redeemed or retired; provided that this restriction shall
          not apply if all accrued and unpaid dividends with respect to the
          Preferred Stock have been paid.

               (E)  Notice of Redemption.

                    (i)    In order to exercise the right of redemption granted
               under Article 5(A), the Corporation must give thirty (30) days
               prior written notice of its election to exercise such right to
               the holders of the Preferred Stock. Any notice of redemption
               under Article 5(A) must specifically refer to Article 5(A).
    

                                       5
<PAGE>
 
                    (ii) In order to exercise the right of redemption granted
               under Article 5(B), the holder having the right must give thirty
               (30) days prior written notice of his election to exercise such
               right to the Corporation, indicating what number of shares of
               Preferred Stock such holder would like to have redeemed. Any
               notice of redemption under Article 5(B) must specifically refer
               to Article 5(B). In the event notices of redemption are tendered
               with respect to more than the applicable percentage of Preferred
               Stock specified in Article 5(B) hereof, then the number of shares
               of Preferred Stock that the Corporation is required to redeem
               from each tendering holder shall be allocated pro rata based on
               the number of shares of Preferred Stock owned by each tendering
               holder.

               (F)  Remedy for Failure to Redeem.  If a notice of redemption is
          timely given and the Corporation is unable or otherwise fails to
          redeem the shares of Preferred Stock that are the subject of such
          notice of redemption, the holders of a majority of the shares of
          Preferred Stock then outstanding will have the right to immediately
          remove the entire Board of Directors of the Corporation and to fill
          the respective vacancies without any vote of the Common Stock.
          Furthermore, so long as the Corporation has not redeemed the shares
          that are the subject of such notice of redemption, each share of
          Preferred Stock shall be entitled to cast a number of votes with
          respect to shareholder approval of any Fundamental Corporate
          Transaction (as defined below) determined by dividing (i) 51% of the
          total number of votes (including the votes of such shares of the
          Preferred Stock, taking into account the additional votes provided to
          such shares pursuant to this Section) entitled to be cast by holders
          of all outstanding shares of the capital stock of the Corporation on
          any Fundamental Corporate Transaction by (ii) the number of then
          outstanding shares of Preferred Stock.  The term "Fundamental
          Corporate Transaction" means any Change in Control Event, any
          liquidation, dissolution or winding up of the Corporation, or any
          other similar transaction requiring shareholder approval under
          applicable law.

               6.   Conversion of Preferred Stock.

               (A)  Procedure for Conversion.  Each share of the Preferred Stock
          shall be convertible at the option of the record holder thereof at any
          time.  To exercise such conversion right, a holder shall present the
          certificate representing such share in person or by registered mail,
          return receipt requested, with postage prepaid thereon, at the
          principal office of the Corporation, or at such other offices or
          agencies of the Corporation, if any, as the Board of Directors may
          determine, and thereby convert such share of Preferred Stock into 8.57
          shares of Common Stock (the "Conversion Ratio"), subject to adjustment
          as provided in Article 8 hereof.  The Conversion Price shall initially
          be $1.17 per share of Common Stock, but shall also be adjusted
          pursuant to Article 8 hereof. Notwithstanding the foregoing, with
          respect to shares of Preferred Stock issued on the First Closing Date
          pursuant to that certain Stock Purchase Agreement by and between the
          Corporation and Enron Capital & Trade

                                       6
<PAGE>
 
          Resources Corp. (the "Investor"), dated as of September 25, 1997 (the
          "Stock Purchase Agreement"), the initial Conversion Ratio shall be
          22.7 shares of Common Stock, and the initial Conversion Price shall be
          $.44 per share of Common Stock, until the Second Closing Date pursuant
          to the Stock Purchase Agreement, subject to adjustment pursuant to
          Article 8 hereof.  After such Second Closing Date, the Conversion
          Ratio shall be 8.57 and the Conversion Price shall be $1.17, each as
          adjusted, with respect to such shares.

               (B) Surrender of Preferred Stock. Before any holder of shares of
          Preferred Stock shall convert such shares into Common Stock, such
          holder shall surrender the certificate or certificates for such shares
          of Preferred Stock as provided in this Article 6, which certificate or
          certificates, if the Corporation shall so request, shall be duly
          endorsed to the Corporation or in blank.

               (C) Delivery of Common Stock. Except as provided in Article 5(A)
          hereof, the Corporation will, as soon as practicable and in no event
          more than three (3) business days after such surrender of certificates
          for shares of Preferred Stock in accordance with the above provisions,
          issue and deliver at the office at which such certificates for shares
          of Preferred Stock shall have been surrendered to the person for whose
          account such shares of Preferred Stock were so surrendered or to such
          holder's nominee or nominees, certificates for the number of shares of
          Common Stock to which such holder shall be entitled as aforesaid. Such
          conversion shall be deemed to have been made as of the date of such
          surrender of the shares of Preferred Stock to be converted, and the
          person or persons entitled to receive the shares of Common Stock
          issuable upon the conversion of such shares of Preferred Stock shall
          be treated for all purposes as the record holder or holders of such
          Common Stock on such date.

               (D)  Conversion into Other Securities.  In case the Common Stock
          of the Corporation issuable upon conversion of the shares of Preferred
          Stock shall be changed into another kind of capital stock (otherwise
          than through a subdivision or combination of shares) or shall
          represent the right to receive some other security or property, as a
          result of any capital reorganization, or reclassification (other than
          pursuant to a transaction constituting a Change in Control Event),
          each share of Preferred Stock shall thereafter entitle the record
          holder to acquire upon conversion thereof the kind and number of
          shares of stock or other securities or property to which such holder
          would have been entitled if such holder had held the number of shares
          of Common Stock issuable upon the conversion of such holder's
          Preferred Stock immediately prior to such Change in Control Event.

               (E)  Notices.  The Corporation shall furnish the holders of the
          Preferred Stock with all written notices or other information required
          by applicable law to be

                                       7
<PAGE>
 
          furnished to the holders of Common Stock, within the time periods, if
          any, prescribed by applicable law.

               (F)  Taxes.  The Corporation will pay any documentary stamp or
          other transfer taxes attributable to the initial issuance of Common
          Stock upon conversion of any shares of Preferred Stock pursuant
          hereto, provided that the Corporation shall not be required to pay any
          tax or taxes which may be payable in respect of any transfer involved
          in the issuance or delivery of any certificates of shares of Common
          Stock in a name other than that of the record holder of shares of
          Preferred Stock in respect of which such shares of Common Stock are
          issued.

               (G)  Reserves.  The Corporation shall, at all times during which
          shares of Preferred Stock may be converted as aforesaid, reserve and
          keep available out of its treasury stock or authorized and unissued
          stock, or both, solely for the purpose of effecting the conversion of
          the shares of Preferred Stock, such number of shares of Common Stock
          as shall from time to time be sufficient to effect the conversion of
          all shares of Preferred Stock from time to time outstanding, and shall
          take such action as may from time to time be necessary to assure that
          such shares of Common Stock will be, when issued upon conversion of
          Preferred Stock, fully paid and nonassessable.

               (H) Retirement of Preferred Stock. Upon any conversion of shares
          of Preferred Stock, the shares of Preferred Stock so converted shall
          be retired and may not be reissued.
 
               (I)  No Fractional Shares.  No fractional shares of Common Stock
          or scrip representing fractional shares shall be issued upon the
          conversion of any Preferred Stock.  Instead of any fractional shares
          of Common Stock which would otherwise be issuable upon conversion of
          any Preferred Stock, the Corporation will pay the holder of the
          Preferred Stock which was converted a cash adjustment in respect of
          such fractional shares in an amount equal to the same fraction of the
          Fair Market Value (as defined in Article 12 hereof) per share of the
          Common Stock at the close of business on the date of conversion.  The
          determination as to whether or not any fractional shares are issuable
          shall be based upon the total number of shares of Preferred Stock
          being converted at any one time by any holder thereof, not upon each
          share of Preferred Stock being converted.


               7.   Board of Directors; Voting Rights.

               (A)  Appointments to the Board of Directors.  The holders of a
          majority of the Preferred Stock shall have the right to appoint twenty
          percent (20%) of the Corporation's Board of Directors (the "Preferred
          Stock Designees"), at such holders'

                                       8
<PAGE>
 
          discretion.  The total number of Board members that the holders of
          Preferred Stock have the right to appoint hereunder shall be rounded
          to the nearest whole number. Any of the Preferred Stock Designees may
          be removed by a vote of a majority of the holders of Preferred Stock,
          but not otherwise. Any vacancy among the Preferred Stock Designees,
          whether as a result of removal, retirement, death or otherwise, shall
          be filled by another person elected in the manner described above.  In
          addition, the holders of a majority of the Preferred Stock have the
          right to appoint a non-voting, advisory director who may attend and be
          heard at (or send a representative to attend and be heard at) all
          meetings of the Corporation's Board of Directors.

               All actions required or permitted under this Article 7(A) may be
          authorized either by vote or written consent of the holders of the
          requisite percentage of Preferred Stock.

               (B)  Voting Rights.  In addition to the foregoing, so long as any
          shares of Preferred Stock are outstanding, neither the Corporation nor
          any Subsidiary of the Corporation shall, without the affirmative vote
          or the written consent of the holders of at least seventy-five percent
          (75%) of the outstanding shares of Preferred Stock, voting as a class:

                    (i)    alter the rights, preferences or privileges of the
          Preferred Stock;

                    (ii)   authorize or issue any security having liquidation
          preferences or redemption, voting or dividend rights senior to or on a
          parity with the Preferred Stock;

                    (iii)  increase the number of shares of Preferred Stock
          which the Corporation shall have the authority to issue;

                    (iv) reclassify any of the Corporation's or any Subsidiary's
          securities;

                    (v) acquire any material business by merger, consolidation,
          stock or equity purchase, asset acquisition or otherwise (other than
          businesses within the Corporation's or any Subsidiary's existing
          business lines with an aggregate purchase price of less than
          $5,000,000 (including assumption of debt));

                    (vi)   merge, consolidate, sell or dispose of all or
          substantially all of the Corporation's or any Subsidiary's assets or
          property, other than pursuant to the transfer of assets from Crown
          Asphalt Corporation, a wholly-owned subsidiary of the Corporation, to
          Crown Asphalt Ridge, L.L.C. (including any successor entity, "Crown
          Asphalt Ridge"), pursuant to Sections 3.1 and 3.3 of that certain
          Operating

                                       9
<PAGE>
 
          Agreement for Crown Asphalt Ridge, L.L.C. dated September 3, 1997 (the
          "Operating Agreement");

                    (vii)  otherwise engage in a Change in Control Event or
          Fundamental Corporate Transaction;

                    (viii) pay dividends, redeem stock or make any other
          restricted payments, or permit any Subsidiary to pay dividends, redeem
          stock or make any other restricted payments, to the holders of the
          Corporation's or such Subsidiary's outstanding equity securities
          (other than with respect to Preferred Stock pursuant to the terms of
          the Corporation's Articles of Incorporation);

                    (ix)   amend the Corporation's or any Subsidiary's Articles
          of Incorporation, by-laws or other Charter documents, or any stock
          option or other stock compensation plan, to the extent that such an
          amendment affects the legal or economic rights of the Preferred Stock;

                    (x)    allow any Subsidiary of the Corporation to issue
          securities to an entity or person other than the Corporation or a
          wholly-owned direct or indirect Subsidiary of the Corporation;

                    (xi) make any changes in the employment status of the person
          holding the position of president of the Corporation;

                    (xii)  directly or indirectly make any guarantees or
          otherwise become liable in any way with respect to the obligations or
          liabilities of any person or entity, or permit any Subsidiary to do
          the same, except in the ordinary course of business;

                    (xiii) mortgage, pledge or create a security interest in,
          or permit any Subsidiary to mortgage, pledge or create a security
          interest in, all or any material proportion of the Corporation's or
          such Subsidiary's assets;

                    (xiv)  incur, create or assume, or permit any Subsidiary to
          incur, create or assume any indebtedness for borrowed money in excess
          of $2,500,000 (not including any capitalized leases or other financing
          arrangements with respect to the Leased Equipment) (as defined in the
          Operating Agreement);

                    (xv) change the Corporation's principal business, enter into
          new lines of business or exit the current line of business, or permit
          any Subsidiary to do the same (the Corporation's current line of
          business is asphalt manufacturing, production, refining, blending,
          modifying, storing, transporting, marketing, and any other activities
          relating to the asphalt industry);

                                       10
<PAGE>
 
                    (xvi)   enter into, materially amend or terminate, or make
          any material waiver pursuant to or materially breach, any material
          contract, including without limitation the Operating Agreement,
          Management Agreement (as defined in the Operating Agreement),
          engineering and construction agreements, and other material agreements
          relating to the proposed oil sands mining and development project with
          respect to the oil sands deposits located near Vernal, Utah within the
          Asphalt Ridge (the "Project");

                    (xvii)  increase or decrease the size of the Board of
          Directors of the Corporation;

                    (xviii) voluntarily liquidate, dissolve or wind-up the
          Corporation or any Subsidiary;

                    (xix)   allow the commencement of an involuntary case or
          other proceeding against the Corporation or any Subsidiary seeking
          liquidation, reorganization or other relief with respect to its debts
          under any applicable federal or state bankruptcy, insolvency,
          reorganization or similar now or hereafter in effect or seeking the
          appointment of a custodian, receiver, liquidator, assignee, trustee,
          sequestrator, or similar official of it or any substantial part of its
          property, which involuntary case or other proceeding shall remain
          undismissed and unstayed, or allow an order or decree approving or
          ordering any of the foregoing to be entered and continued unstayed and
          in effect, for a period of ninety days;

                    (xx)    commence a voluntary case or proceeding under any
          applicable federal or state bankruptcy, insolvency, reorganization or
          other similar law or any other case or proceeding to be adjudicated a
          bankrupt or insolvent or consent to the entry of a decree or order for
          relief in respect of the Corporation or any Subsidiary in an
          involuntary case or proceeding under any applicable, federal or state
          bankruptcy, insolvency, reorganization or other similar law or to the
          commencement of any bankruptcy or insolvency case or proceeding
          against any of them, or file a petition or answer or consent seeking
          reorganization or relief under any applicable, federal or state law,
          or consent to the filing of such petition or to the appointment of or
          taking possession by a custodian, receiver, liquidator, assignee,
          trustee, sequestrator or similar official of the Corporation or any
          Subsidiary or any substantial part of its property or making
          assignment for the benefit of creditors, or admit in writing an
          inability to pay their debts generally as they become due, or take any
          action in furtherance of any such action;

                    (xxi)   consent to the sale, lease or other disposition of
          all or substantially all of the assets of Crown Asphalt Ridge;

                                       11
<PAGE>
 
                    (xxii)   consent to any capital call with respect to the
          Project to the extent such consent constitutes a Major Decision under
          the Operating Agreement;
 
                    (xxiii)  consent to any merger, reorganization,
          consolidation or similar restructuring of Crown Asphalt Ridge;

                    (xxiv) transfer or dispose of, or pledge, mortgage or grant
          a security interest in, all or any equity interests in Crown Asphalt
          Ridge;

                    (xxv) consent to the dissolution of Crown Asphalt Ridge or
          to any action that results in the dissolution of Crown Asphalt Ridge;

                    (xxvi) consent to any contract or transaction between Crown
          Asphalt Ridge and any of its members, managers or their respective
          affiliates (other than those on terms comparable to and competitive
          with those available to Crown Asphalt Ridge from others dealing at
          arm's length);

                    (xxvii)  consent to any pledge, mortgage or granting of a
          security interest in a substantial portion of the property or assets
          of Crown Asphalt Ridge other than: purchase money security interests
          and other liens created or existing at the time of acquisition of an
          asset; and materialmen's, mechanics', contractors', operators', tax
          and similar liens or charges arising in the ordinary course of
          business or by operation of law;

                    (xxviii) consent to the engagement by Crown Asphalt Ridge in
          any business activity out of the ordinary course of Crown Asphalt
          Ridge's business, or in any business activity outside of the Area of
          Mutual Interest;

                    (xxix)   resign as operator of the Project, other than any
          deemed resignation under the Management Agreement;

                    (xxx) consent to the issuance by Crown Asphalt Ridge of any
          new securities that reduces the ownership interest of the Corporation
          or its Subsidiary in Crown Asphalt Ridge.

                    (xxxi)  exercise, or decline to exercise, any right of first
          refusal or right of first offer under the Operating Agreement,
          including pursuant to Article XIII thereunder.

               For purposes hereof, the term "Subsidiary" shall mean any entity
          that is directly or indirectly owned or controlled by the Corporation.

                                       12
<PAGE>
 
          (C)  Deemed Consents.  If the holders of less than 25% of the
          outstanding shares of Preferred  Stock have voted against, or
          otherwise rejected, in writing, the authorization of any matter with
          respect to which the Preferred Stock has class voting rights pursuant
          to Article 8(B) hereof within three (3) business days of the delivery
          to such holders of a written request from the Corporation to approve
          such matter, then the holders of Preferred Stock shall be deemed to
          have consented to such matter.

          (D) Voting Rights Expire Upon Notice of Redemption.  If the
          Corporation exercises, with the intent of redeeming, its right  of
          optional redemption pursuant to Article 5(A) hereof with respect to
          all of the Preferred Stock within three (3) business days of receiving
          notice of the Preferred Stockholders' refusal to vote for or otherwise
          consent to an action pursuant to Article 8(B) hereof, then the voting
          rights of the Preferred Stockholders pursuant to Article 8(B) shall
          terminate effective upon delivery of the notice of redemption pursuant
          to Article 5(E)(i) hereunder; provided that such voting rights shall
          begin again if such redemption has not been consummated within thirty
          (30) days of the delivery of such notice of redemption.

          (E) Notice Requirements. Except as provided herein, the Corporation
          should be required to give each holder of Preferred Stock prior
          written notice, as early as practicable, of the following actions of
          the Corporation or its Subsidiaries:

                    (i)    any decision with respect to any Major Decision under
          the Operating Agreement;

                    (ii)   designating any representative to act or serve on
          behalf of the Corporation or any Subsidiary on the Management
          Committee or other governance group with respect to any entity formed
          in connection with the Project, or removing any such representative;

                    (iii)  consenting, or declining to consent, to the
          undertaking by Crown Asphalt Ridge of any Additional Opportunity
          within the Project Area (as such terms may be defined from time to
          time pursuant the Operating Agreement);

                    (iv) consenting, or declining to consent, to the exercise of
          the purchase option relating to the acquisition of properties outside
          of the Project Area but within the Area of Mutual Interest (as such
          terms are defined in the Operating Agreement);

                    (v) approving the Annual Operating Plan with respect to the
          Project, or any substantial amendment thereto or substantial variance
          therefrom;

                                       13
<PAGE>
 
                    (vi)   consenting, or declining to consent, to the
          construction of any Subsequent Plant (as defined in the Operating
          Agreement of Crown Asphalt Ridge), or to the formation of a new entity
          with respect to same;
 
                    (vii)  responses to any solicitation of the Corporation or
          any Subsidiary with respect to  any "Back-in Option" under the
          Operating Agreement;

                    (viii) consenting to the substitution of a Member pursuant
          to the Operating Agreement;

                    (ix)   any deemed resignation under the Management Agreement
          (provided that the Corporation need only give the required written
          notice as soon as practicable after such deemed resignation).

               8.   Adjustment of Conversion Ratio to Prevent Dilution.

               (A)  Conversion Ratio.  As used herein, "Conversion Ratio" at any
          time shall mean the number of shares of Common Stock of the
          Corporation into which a share of Preferred Stock shall be
          convertible, calculated as the Stated Value divided by the Conversion
          Price as adjusted pursuant to this Article 8.

               (B)  Adjustment of Conversion Price and Conversion Ratio.

                    (i)    Minimum Proportion of Common Stock Potentially
          Convertible.  Initially, the total number of shares of Common Stock
          which would be issued upon conversion of all of the Preferred Stock
          shall be equal to 4,286,948 shares (twenty-four percent (24%)) of the
          Corporation's Common Stock (the "24% Initial Amount"); provided,
          however, that until the Second Closing under the Stock Purchase
          Agreement, the total number of shares of Common Stock which would be
          issued upon conversion of all the Preferred Stock shall be equal to
          1,021,799 shares (seven percent (7%)) of the Corporation's Common
          Stock (the "7% Initial Amount"). The 24% Initial Amount and the 7%
          Initial Amount shall be increased to maintain such 24% and 7%
          interest, respectively (measured at the time of conversion), with
          respect to any common shares or common share equivalents (including
          without limitation common shares or common share equivalents into
          which any Options or Convertible Securities are convertible) issued in
          connection with:

                    (a) any aspect (including without limitation the
               construction, startup or operation) of the Project, or of the
               next two oil sands processing facilities in the Project Area (as
               defined in the Operating Agreement) having a capacity of at least
               660,000 tons/year (in raw materials) to be developed by the
               Corporation, any Subsidiary, Crown Asphalt Ridge or any other
               entity in which the Corporation has a direct or indirect
               financial interest; or

                                       14
<PAGE>
 
                    (b) the compensation of any employee, director, consultant
               or other service provider of the Corporation or any Subsidiary
               thereof (other than Options to acquire up to 5% of the
               Corporation's Common Stock (having an exercise price equal to or
               less than the then Fair Market Value of the Common Stock at the
               time of the conversion of Preferred Stock), to be granted as
               incentive compensation to key management personnel of the
               Corporation).

          The Conversion Price and the Conversion Ratio with respect to the
          Preferred Stock shall be adjusted automatically at the time of
          conversion to ensure that the Preferred Stock is convertible into such
          percentages.  The Corporation and the Board of Directors shall take no
          action which would prevent this condition from being fulfilled.

                    (ii)   Subdivision or Combination of Stock.  In case the
          Corporation shall at any time subdivide its outstanding common shares
          into a greater number of shares (by way of dividend, split or
          otherwise), the Conversion Price in effect immediately prior to the
          subdivision shall be proportionately reduced, and, in case the
          outstanding common shares shall be combined into a smaller number of
          shares (by way of reverse split or otherwise), the Conversion Price in
          effect immediately prior to the combination shall be proportionately
          increased.

                    (iii)  Certain Distributions.  In the event that the
          Corporation shall make any distribution of its assets upon or with
          respect to the common shares (A) to which holders of Preferred Stock
          are not also entitled under Article 3, (B) that does not constitute a
          dividend payable out of earnings or surplus legally available for
          dividends under the Utah Revised Business Corporation Act and (C) that
          does not constitute a liquidation under Article 4, the holder of each
          outstanding share of Preferred Stock shall, simultaneously with the
          conversion of that share of Preferred Stock after the record date for
          that distribution or, in the absence of a record date, after the date
          of that distribution, receive, in addition to the common shares into
          which that share of Preferred Stock is converted, the amount of such
          assets (or, at the option of the Corporation, a sum equal to the value
          of such assets at the time of distribution as determined in good faith
          by a disinterested majority of the Board of Directors of the
          Corporation) that would have been distributed to such holder if the
          holder has converted that share immediately prior to the record date
          for that distribution or, in the absence of a record date, immediately
          prior to the date of that distribution.

                    (iv) Immaterial Adjustments.  Notwithstanding the foregoing
          provisions of this Article 8, (i) no adjustment in the number of
          common shares into which a share of Preferred Stock is convertible
          shall be required, unless the adjustment would require an increase or
          decrease in the number of shares of at least

                                       15
<PAGE>
 
          1/10,000 of the aggregate number of common shares issuable upon
          conversion of all shares of Preferred Stock outstanding immediately
          prior to such adjustment and (ii) no adjustment in the Conversion
          Price shall be required, unless the adjustment would require an
          increase or decrease of at least one cent per share; provided,
          however, that any adjustments that, by reason of this Article 8(B),
          are not required to be made shall be carried forward and taken into
          account in any subsequent adjustment.  All calculations under this
          Article 8(B) shall be made to the nearest cent or the nearest 1/20,000
          of a share, as the case may be.

                    (v)    Record Date.  In case the Corporation shall take a
          record of the holders of its common shares for the purpose of
          entitling them (A) to receive a dividend or other distribution payable
          in common shares, any rights to subscribe for or to purchase, or any
          options or warrants for the purchase of, common shares or any stock or
          securities convertible into exchangeable for common shares (such
          rights, warrants or options being "Options", and such convertible or
          exchangeable securities being "Convertible Securities"), or (B) to
          subscribe for or purchase common shares, Options or Convertible
          Securities, then, upon the issuance, grant or sale, that record date
          shall be deemed to be the date of the issuance, grant or sale of the
          common shares deemed to have been issued, granted or sold upon the
          declaration of the dividend or the making of the other distribution or
          the date of the granting of the right of subscription or purchase, as
          the case may be.

                    (vi)   Notice of Adjustment.  Whenever any adjustment is
          required in the Conversion Price, the Corporation shall promptly (i)
          file with each office or agency maintained by the Corporation for the
          transfer of Preferred Stock a statement describing in reasonable
          detail the adjustment and the method of calculation used (which, at
          the time of such filing, shall be certified as correct by the
          Corporation's independent accountant) and (ii) cause a notice of the
          adjustment, setting forth the adjusted Conversion Price, to be mailed
          to the holders of record of shares of Preferred Stock at their
          respective addresses on the books of the Corporation.

                    (vii)  Certain Notices.  If the Corporation takes action:

                           (a) to make any distribution to the holders of its
               common shares;
 
                           (b) to accomplish any capital reorganization, or
               reclassification of the capital stock of the Corporation (other
               than a subdivision, split or combination of its common shares),
               or a consolidation or merger to which the Corporation is a party
               and for which approval of any shareholders of the Corporation is
               required, or the sale or transfer of all or substantially

                                       16
<PAGE>
 
               all of the assets of the Corporation, including without
               limitation any Change in Control Event; or

                           (c) to dissolve, liquidate or wind-up;

          then the Corporation shall (A) in case of any such distribution or Pro
          Rata Rights Offering, at least 30 days prior to the date or expected
          date on which the books of the Corporation shall close or a record
          shall be taken for the determination of holders entitled to the
          distribution or rights, and (B) in the case of any such
          reorganization, reclassification, consolidation, merger, sale,
          transfer, Change in Control Event, dissolution, liquidation or
          winding-up, at least 30 days prior to the date or expected date when
          that event shall take place (for the avoidance of doubt, it being
          understood that, in each such case, the shares of Preferred Stock
          shall continue to be convertible at any time during the applicable 30-
          day (or longer) period), cause written notice of the action to be
          mailed to each holder of shares of Preferred Stock at the holder's
          address on the books of the Corporation.  Any notice under clause (A)
          also shall specify the date or expected date on which the holders of
          common shares shall be entitled to the distribution or rights, and any
          notice under clause (B) also shall specify the date or expected date
          on which the holders of common shares shall be entitled to exchange
          their common shares for securities or other property deliverable upon
          such reorganization, reclassification, consolidation, merger, sale,
          transfer, Change in Control Event, dissolution, liquidation or
          winding-up.  Notwithstanding any other provision hereof, if a
          conversion of Preferred Stock is to be made in connection with any of
          the transactions listed in Article 8(B)(xii)(a)-(c) above, such
          conversion may, at the election of any holder tendering Preferred
          Stock for conversion, be conditioned upon the consummation of such
          transaction, in which case such conversion shall not be deemed to be
          effective until the consummation of such transaction.

                    (viii) Common Shares.  For purposes of this Article 8(B),
          the term "common shares" shall mean (i) the Common Stock or (ii) any
          other class of stock resulting from successive changes or
          reclassifications of such Common Stock consisting solely of changes in
          par value, or from no par value to par value, or from par value to no
          par value.  If at any time as a result of an adjustment pursuant to
          Article 8(B) a holder of shares of Preferred Stock thereafter
          surrendered for conversion shall become entitled to receive any shares
          of the Corporation other than common shares, thereafter the number of
          such other shares so receivable upon conversion of shares of Preferred
          Stock shall be subject to adjustment from time to time in a manner and
          on terms as nearly equivalent as practicable to the provisions with
          respect to the common shares in Article 8(B), and the other provisions
          of this Article 8 with respect to the common shares shall apply on
          like terms to any such other shares.

                                       17
<PAGE>
 
                    (ix) Certain Other Matters. Notwithstanding anything to the
          contrary in this Article 8(B), no Dividend or other distribution of
          any nature whatsoever payable in respect of the common shares after
          the conversion under this Article 8(B) shall be paid (but shall
          accrue) to a holder of any unsurrendered certificate evidencing shares
          of Preferred Stock, unless the certificate or certificates evidencing
          the holder's shares of Preferred Stock so converted are delivered to
          the Corporation in accordance with Article 6(A) or the holder notifies
          the Corporation that the certificate or certificates have been lost,
          stolen or destroyed and executes an agreement reasonably satisfactory
          to the Corporation to indemnify the Corporation against any resulting
          loss it incurs. Thereupon, (i) there shall be issued and delivered to
          the holder, in the holder's name shown on the certificate or
          certificates, a certificate or certificates evidencing the number of
          common shares into which the holder's shares of Preferred Stock were
          converted (together with any cash payment in lieu of a fractional
          share) and (ii) the holder shall be entitled to payment of the amount
          previously withheld pursuant to this Article 8(B)(x).

               9.   Closing of Books.  The Corporation will not close its books
          against the transfer of any shares of Preferred Stock.

               10.  Fair Market Value of Common Stock.  For purposes hereof, the
          terms "Fair Market Value" on any date shall mean (i) if the Common
          Stock is listed or admitted to trade on a national securities exchange
          or national market system, the averaged the closing prices of the
          Common Stock for the twenty (20) preceding trading days, as published
          in the Wall Street Journal; (ii) if the Common Stock is not listed or
          admitted to trade on a national securities exchange or national market
          system, the average of the mean between the bid and asked price for
          the Common Stock for the twenty (20) preceding trading days, as
          furnished by the National Association of Securities Dealers, Inc.,
          through NASDAQ or a similar organization if NASDAQ is no longer
          reporting such information; or (iii) if the Common Stock is not listed
          or admitted to trade on a national securities exchange or national
          market system and if bid and asked price for the Common Stock are not
          so furnished through NASDAQ or a similar organizational, the value
          established by the Board of Directors.

               11.  Replacement.  Upon receipt of evidence satisfactory to the
          Corporation of the ownership and the loss, theft, destruction or
          mutilation of any certificate evidencing one or more shares of
          Preferred Stock and, in the case of loss, theft or destruction, upon
          receipt of an agreement of indemnity reasonably satisfactory to the
          Corporation or, in the case of mutilation, upon surrender of such
          mutilated certificate, the Corporation shall (at its expense) execute
          and deliver in lieu of such certificate that has been lost, stolen,
          destroyed or mutilated, any certificate of like kind representing the
          number of shares of Preferred Stock represented by such

                                       18
<PAGE>
 
          lost, stolen, destroyed or mutilated certificate and dated the date of
          such lost, stolen, destroyed or mutilated certificate.



                                    CROWN ENERGY CORPORATION


                                    By:   /s/ JAY MEALEY

                                    Name: Jay Mealey

                                    Date: 9/25/97

 

                                       19

<PAGE>
 
                                                                       Exhibit 3
                                                                       ---------
                                                             Document No. 165607


     THIS WARRANT AND THE SHARES OF THE COMMON STOCK ISSUABLE UPON EXERCISE
     HEREOF HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS
     AMENDED, OR THE SECURITIES LAWS OF ANY STATE.  SUCH SECURITIES MAY NOT BE
     SOLD, PLEDGED, ASSIGNED OR OTHERWISE TRANSFERRED EXCEPT IN CONJUNCTION WITH
     A SALE, PLEDGE, TRANSFER OR ASSIGNMENT OF PREFERRED STOCK OR COMMON STOCK
     AS DESCRIBED HEREIN, AND EXCEPT UPON SUCH REGISTRATION OR UPON DELIVERY TO
     THE COMPANY OF AN OPINION SATISFACTORY TO THE COMPANY THAT REGISTRATION IS
     NOT REQUIRED FOR SUCH SALE, PLEDGE, ASSIGNMENT OR TRANSFER.

     THE TRANSFER OF THIS WARRANT AND THE SHARES OF COMMON STOCK ISSUABLE UPON
     EXERCISE HEREOF IS SUBJECT TO COMPLIANCE WITH THE CONDITIONS SPECIFIED
     BELOW, AND NO TRANSFER OF THIS WARRANT OR SUCH SHARES SHALL BE VALID UNTIL
     SUCH CONDITIONS HAVE BEEN FULFILLED.

                           CROWN ENERGY CORPORATION

         COMMON STOCK PURCHASE WARRANT DATED ______________, 1997, AND
                          EXPIRING ____________, 2007

     This is to Certify That, for value received, Enron Capital & Trade
Resources Corp., a Texas corporation, or its permitted assignee (the "Holder"),
upon due exercise of this Warrant, is entitled to purchase from Crown Energy
Corporation, a Utah corporation (the "Company"), before the close of business
on___________, 2007 (the "Expiration Date"), such number of fully paid and
nonassessable shares of common stock, par value $.02 per share, of the Company
("Common Stock"), that will enable the Holder to subscribe for and purchase, at
a per share Exercise Price of $.002 (the "Exercise Price"), up to eight percent
(8%) of the shares of Common Stock, measured as of the date hereof, on a fully
diluted basis  (the "Initial Amount ") (subject to adjustment herein).

     This Warrant is hereinafter called the "Warrant" and the shares of Common
Stock issuable upon exercise hereof are hereinafter called the "Warrant Shares."
This Warrant is issued by the Company pursuant to the Stock Purchase Agreement
between the Holder and the Company dated as of the date of this Warrant (the
"Stock Purchase Agreement"). Any capitalized terms not otherwise defined herein
shall have the meanings ascribed to them in the Stock Purchase Agreement.

                                   ARTICLE I
                              EXERCISE OF WARRANT

     1.1  Expiration of Warrant.  Except as otherwise provided herein, the
Holder may exercise this Warrant at any time on or after the fifth anniversary
of the date hereof and on or before the Expiration Date.  Notwithstanding the
other provisions of this Section, this Warrant shall not be exercised after the
close of business on the Expiration Date.
<PAGE>
 
     1.2  Exercise of Warrant.

          1.2.1     The Holder of this Warrant may, at any time on or after the
fifth anniversary of the date hereof and on or before the Expiration Date,
exercise this Warrant for the purchase of the shares of Common Stock which such
Holder is entitled to purchase hereunder at the Exercise Price. In order to
exercise this Warrant, the Holder hereof shall deliver to the Company (i) a
written notice of such Holder's election to exercise this Warrant, (ii) payment
of the aggregate Exercise Price of the shares of Common Stock being purchased in
cash or by certified or cashier's check, and (iii) this Warrant; provided that,
in case such shares shall not have been registered under the Securities Act of
1933, as amended (the "Securities Act"), the Company may require that such
Holder furnish to the Company a written statement that such Holder is purchasing
such shares for such Holder's own account for investment and not with a view to
the distribution thereof, and that none of such shares will be offered or sold
in violation of the provisions of the Securities Act or other applicable state
securities laws.  Upon receipt thereof, the Company shall, as promptly as
practicable but in any event within 30 days, execute or cause to be executed and
deliver to such Holder a certificate or certificates representing the aggregate
number of shares of Common Stock obtained pursuant to the exercise of this
Warrant.  The stock certificate or certificates so delivered shall be in such
denominations as may be specified in said notice and shall be registered in the
name of such Holder or such other name as shall be designated in such notice.
The Warrant shall be deemed to have been exercised and such certificate or
certificates shall be deemed to have been issued, and the Holder or any other
person so designated or named in such notice shall be deemed to have become a
Holder of record of the Warrant Shares for all purposes as of the date that such
notice is received by the Company.

          1.2.2     The Company shall pay all expenses, taxes and other charges
payable in connection with the preparation, execution and delivery of stock
certificates under this Section.  The Company represents, warrants and agrees
that all shares of Common Stock issuable upon any exercise of this Warrant shall
be validly authorized, duly issued, fully paid and nonassessable and free from
all taxes, liens and charges with respect to the issuance thereof attributable
to any act or omission by the Company, and the Company shall take no action
which will cause a contrary result (including, without limitation, any action
which would cause the Exercise Price to be less than the par value, if any, of
the Common Stock).

                                  ARTICLE II
                                   TRANSFER

     2.1  Warrant Office.  The Company shall maintain an office for certain
purposes specified herein (the "Warrant Office"), which office shall initially
be the Company's offices at 215 South State, Suite 550, Salt Lake City, Utah
84111, and may subsequently be such other office of the Company or of any
transfer agent of the Common Stock in the continental United States as to which
written notice has previously been given to the Holder hereof.  The Company
shall maintain, at the Warrant Office, a register for the Warrant in which the
Company shall record the name and address

                                      -2-
<PAGE>
 
of the Person in whose name this Warrant has been issued, as well as the name
and address of each permitted assignee of the rights of the registered owner
hereof.

     2.2  Ownership of Warrants.  The Company may deem and treat the Person in
whose name the Warrants are registered as the Holder and owner hereof
(notwithstanding any notations of ownership or writing hereon made by anyone
other than the Company) for all purposes and shall not be affected by any notice
to the contrary until presentation of this Warrant for registration of transfer
an provided in this Article II.  Notwithstanding the foregoing, the Warrants
represented hereby, if properly assigned in compliance with this Article II, may
be exercised by an assignee for the purchase of Warrant Shares without having a
new Warrant issued.

     2.3  Restrictions on Transfer of Warrants.  The Company agrees to maintain
at the Warrant Office books for the registration and transfer of the Warrants.
Subject to the restrictions on transfer of the Warrants in this Section 2.3, the
Company, from time to time, shall register the transfer of the Warrants in such
books upon surrender of this Warrant at the Warrant Office properly endorsed or
accompanied by appropriate instruments of transfer and written instructions for
transfer satisfactory to the Company.  Upon any such transfer and upon payment
by the Holder or its transferee of any applicable transfer taxes, new Warrants
shall be issued to the transferee and the transferor (as their respective
interests may appear) and the surrendered Warrant shall be canceled by the
Company.  The Company shall pay all taxes (other than securities transfer taxes)
and all other expenses and charges payable in connection with the transfer of
the Warrants pursuant to this Section 2.3.

          2.3.1     Restrictions in General.  The Holder of the Warrants agrees
that it will neither (i) transfer the Warrants prior to delivery to the Company
of the opinion of counsel referred to in, and to the effect described in,
Section 2.3.2 hereof, or until registration hereof under the Securities Act of
1933 (the "Securities Act") and any applicable state securities or blue sky laws
has become effective, (ii) transfer such Warrant Shares prior to delivery to the
Company of the opinion of counsel referred to in, and to the effect described
in, Section 2.3.2 hereof, or until registration of such Warrant Shares under the
Securities Act and any applicable state securities or blue sky laws has become
effective nor (iii) transfer the Warrants other than together with, and to the
transferee pursuant to, a transfer of Preferred Stock (or of Common Stock
previously issued upon conversion of Preferred Stock), in a transaction in which
the percentage of the Warrants so transferred is equal to the percentage that
the transferred Preferred Stock (and transferred Common Stock previously issued
upon conversion of the Preferred Stock, as applicable) represents of the sum of
all of such Holder's (a) Preferred Stock, and (b) Common Stock previously issued
upon conversion of Preferred Stock (in all instances counting each share of
Preferred Stock as being equal to the number of shares of Common Stock into
which it is then convertible).

          2.3.2     Statement of Intention to Transfer; Opinion of Counsel.
Except as otherwise expressly provided herein, by its acceptance hereof the
Holder of the Warrants agrees that, prior to any transfer of the Warrants or any
transfer of the related Warrant Shares, such Holder will deliver to the Company
a statement setting forth the intention of such Holder's prospective transferee
with

                                      -3-
<PAGE>
 
respect to its retention or disposition of the Warrants or of such Warrant
Shares (whichever is involved in such transfer), in either such case together
with a signed copy of the opinion of such Holder's counsel, to the effect that
the proposed transfer of the Warrant or the proposed transfer of the Warrant
Shares may be effected without registration under the Securities Act and any
applicable state securities or blue sky laws.  The Holder of the Warrant shall
then be entitled to transfer the Warrants or to transfer such Warrant Shares in
accordance with the statement of intention delivered by such Holder to the
Company.

          2.3.3     Permitted Transfers.  Notwithstanding any provisions
contained in this Warrant to the contrary (other than Section 2.3.1(iii)), this
Warrant may be transferred, in whole or in part, by the Holder hereof without
regard to the requirements and conditions set forth in Sections 2.3.1 and 2.3.2
above if any such transfer is made to any entity that is an Affiliate of such
Holder.

     2.4  Compliance with Securities Laws.  Notwithstanding any other provisions
contained in this Warrant, the Holder hereof understands and agrees that the
following restrictions and limitations shall be applicable to all Warrant Shares
and to all resales or other transfers thereof pursuant to the Securities Act:

          2.4.1     The Holder hereof agrees that the Warrant Shares shall not
be sold or otherwise transferred unless the Warrant Shares are registered under
the Securities Act and applicable state securities or blue sky laws or are
exempt therefrom.

          2.4.2     A legend in substantially the following form will be placed
on the certificate(s) evidencing the Warrant Shares:

               "The shares represented by this certificate have not been
          registered under the Securities Act of 1933 or under applicable state
          securities laws. The shares may not be offered, sold, transferred,
          pledged or otherwise disposed of except in connection with a sale,
          pledge, transfer or assignment of Preferred Stock or Common Stock (as
          described in more detail in the Warrant Agreement with respect to this
          certificate), and except pursuant to an effective registration
          statement with respect thereto under all applicable securities laws,
          or an opinion of counsel satisfactory to Crown Energy Corporation that
          such registrations are not required."

          2.4.3     Stop transfer instructions will be imposed with respect to
the Warrant Shares so as to restrict resale or other transfer thereof, subject
to this Section 2.4.

                                      -4-
<PAGE>
 
                                 ARTICLE III
                                 ANTI-DILUTION

          3.1  Anti-Dilution Provisions.  The Exercise Price shall be subject to
adjustment from time to time as hereinafter provided.  Upon each adjustment of
the Exercise Price, the Holder of this Warrant shall thereafter be entitled to
purchase, at the Exercise Price resulting from such adjustment, the number of
shares of Common Stock obtained by multiplying the Exercise Price in effect
immediately prior to such adjustment by the number of shares purchasable
pursuant hereto immediately prior to such adjustment and dividing the product
thereof by the Exercise Price resulting from such adjustment.

          3.2  Basic Calculation of Warrant Shares.    Upon the fifth
anniversary of the date hereof, the Warrant will become exercisable into a
number of Warrant Shares equal to (a) the sum of the Purchase Price plus the
product of (i) the Purchase Price multiplied by (ii) 39% multiplied by (iii) 5
(the "39% Internal Rate of Return") minus (b) the sum of (i) all dividends and
other distributions paid by Company on the Preferred Stock or on the Common
Stock received upon conversion of the Preferred Stock, plus (ii) the greater of
the proceeds from the sale of any Common Stock received by the Holder from the
conversion of the Preferred Stock prior to the fifth anniversary hereof, or the
Terminal Value (as defined below) of such Common Stock sold prior to the fifth
anniversary hereof, plus (iii) the Terminal Value of the Preferred Stock and the
Common Stock received upon conversion of the Preferred Stock then held; divided
by (c) the Fair Market Value (as defined below) of the Company's Common Stock on
a weighted average basis for the 90 days immediately preceding the fifth
anniversary of the date hereof.  "Terminal Value" is defined as the (x) sum of
(i) the shares of Common Stock into which the Preferred Stock then held is
convertible, plus (ii) shares of Common Stock received upon conversion of
Preferred Stock, multiplied by (y) the Fair Market Value (as defined below) of
the Company's Common Stock on a weighted average basis for the ninety (90) days
immediately preceding the fifth anniversary of the date hereof.

          For example, as is expressed herein, the 39% Internal Rate of Return
equates to $14,750,000. If, on the third anniversary of the delivery of this
Warrant, the Holder sold 50% of the shares of Common Stock receivable upon the
conversion of the Preferred Stock (2,143,474 shares), at a per share price of $3
and the Terminal Value for such shares of Common Stock prevailing on both the
date of sale and the fifth anniversary of this Warrant is $2.50 per share, the
amount realized by the Holder would be $13,789,107 ($6,430,422 in sales
proceeds, $5,358,685 in Terminal Value on the fifth anniversary, and $2,000,000
in dividends).  Consequently, pursuant to the equations set forth above, the
Holder would receive a total of 384,357 Warrants to achieve the 39% Internal
Rate of Return ($14,750,000 minus $13,789,107 equals $960,893 divided by $2.50).
In the event that (a-b) divided by (c) above should equal zero, no Warrant
Shares would be issued hereunder.

          For purposes hereof, the terms "Fair Market Value" on any date shall
mean (i) if the Common Stock is listed or admitted to trade on a national
securities exchange or national market system, the closing price of the Common
Stock, as published in the Wall Street Journal or, if there is no trading of the
Common Stock on such date, then the closing price on the next preceding date on
which there

                                      -5-
<PAGE>
 
was trading of such shares; (ii) if the Common Stock is not listed or admitted
to trade on a national securities exchange or national market system, the mean
between the bid and asked price for the Common Stock on such date, as furnished
by the National Association of Securities Dealers, Inc., through NASDAQ or a
similar organization if NASDAQ is no longer reporting such information; or (iii)
if the Common Stock is not listed or admitted to trade on a national securities
exchange or national market system and if bid and asked price for the Common
Stock are not so furnished through NASDAQ or a similar organization, the market
value established by the Board of Directors as fairly reflecting the worth of
the Corporation.

          If the number of Warrant Shares, as calculated pursuant to the above
formula, is zero or less than zero, then this Warrant Agreement shall terminate
automatically.

          3.3  Adjustment of Initial Amount.  The Initial Amount shall be
increased to maintain the Initial Amount of 8% (measured at the fifth
anniversary of the date hereof) with respect to any common shares or common
share equivalents (including without limitation common shares or common share
equivalents into which any Options or Convertible Securities (as defined herein)
are convertible) issued in connection with:

               (a) any aspect (including without limitation the construction,
          startup or operation) of the Project, or of the next two oil sands
          processing facilities in the Project Area (as defined in the Operating
          Agreement) having a capacity of at least 660,000 tons/year (in raw
          materials) to be developed by the Corporation, any Subsidiary, Crown
          Asphalt Ridge or any other entity in which the Corporation has a
          direct or indirect financial interest; or

               (b) the compensation of any employee, director, consultant or
          other service provider of the Corporation or any Subsidiary thereof
          (other than Options to acquire up to 5% of the Corporation's Common
          Stock (having an exercise price equal to or less than the Fair Market
          Value of the Common Stock at the fifth anniversary of the date
          hereof), to be granted as incentive compensation to key management
          personnel of the Corporation).

     3.4  Stock Splits and Reverse Splits.  In the event that the Company shall
at any time subdivide its outstanding shares of Common Stock into a greater
number of shares (by way of dividend, split or otherwise), the Exercise Price in
effect immediately prior to such subdivision shall be proportionately reduced
and the number of Warrant Shares purchasable pursuant to this Warrant
immediately prior to such subdivision shall be proportionately increased, and
conversely, in the event that the outstanding shares of Common Stock shall at
any time be combined into a smaller number of shares, the Exercise Price in
effect immediately prior to such combination shall be proportionately increased
and the number of Warrant Shares purchasable upon the exercise of this Warrant
immediately prior to such combination shall be proportionately reduced.  Except
as provided in this Section 3.4 no adjustment in the Exercise Price and no
change in the number of Warrant Shares purchasable shall be made under this
Article III as a result of or by reason of any such subdivision or combination.

                                      -6-
<PAGE>
 
     3.5  Reorganizations and Asset Sales.  If any capital reorganization or
reclassification of the capital stock of the Company, or any consolidation,
merger or share exchange of the Company with another Person, or the sale,
transfer or other disposition of all or substantially all of its assets to
another Person shall be effected in such a way that holders of Common Stock
shall be entitled to receive capital stock, securities or assets with respect to
or in exchange for their shares, then the following provisions shall apply:

          3.5.1     As a condition of such reorganization, reclassification,
consolidation, merger, share exchange, sale, transfer or other disposition
(except as otherwise provided below in this Section 3.4), lawful and adequate
provisions shall be made whereby the Holders of Warrants shall thereafter have
the right to purchase and receive upon the terms and conditions specified in
this Warrant and in lieu of the Warrant Shares immediately theretofore
receivable upon the exercise of the rights represented hereby, such shares of
capital stock, securities or assets of the surviving entity (the "Successor
Person") as may be issued or payable with respect to or in exchange for a number
of outstanding shares of such Common Stock equal to the number of Warrant Shares
immediately theretofore so receivable, had such reorganization,
reclassification, consolidation, merger, share exchange or sale not taken place,
and in any such case appropriate provision reasonably satisfactory to such
Holder shall be made with respect to the rights and interests of such Holder to
the end that the provisions hereof (including, without limitation, provisions
for adjustments of the Exercise Price and of the number of Warrant Shares
receivable upon the exercise) shall thereafter be applicable, as nearly as
possible, in relation to any shares of capital stock, securities or assets
thereafter deliverable upon the exercise of Warrants.

          3.5.2     In the event of a merger, share exchange or consolidation of
the Company with or into another Person as a result of which a number of shares
of common stock or its equivalent of the Successor Person greater or lesser than
the number of shares of Common Stock outstanding immediately prior to such
merger, share exchange or consolidation are issuable to holders of Common Stock,
then the Exercise Price in effect immediately prior to such merger, share
exchange or consolidation shall be adjusted in the same manner as though there
were a subdivision or combination of the outstanding shares of Common Stock.

          3.5.3     The Company shall not effect any such consolidation, merger,
share exchange, sale, transfer or other disposition unless prior to or
simultaneously with the consummation thereof the Successor Person (if other than
the Company) resulting from such consolidation, share exchange or merger or the
Person purchasing or otherwise acquiring such assets shall have assumed by
written instrument executed and mailed or delivered to the Holder hereof at the
last address of such Holder appearing on the books of the Company the obligation
to deliver to such Holder such shares of capital stock, securities or assets as,
in accordance with the foregoing provisions, such Holder may be entitled to
receive, and all other liabilities and obligations of the Company hereunder.
Upon written request by the Holder hereof, such Successor Person will issue a
new Warrant revised to reflect the modifications in this Warrant effected
pursuant to this Section 3.5.

                                      -7-
<PAGE>
 
          3.5.4  If a purchase, tender or exchange offer is made to and accepted
by the holders of 50% or more of the outstanding shares of Common Stock the
Company shall not effect any consolidation, merger, share exchange or sale,
transfer or other disposition of all or substantially all of the Company's
assets with the Person having made such offer or with any affiliate of such
Person, unless prior to the consummation of such consolidation, merger, share
exchange, sale, transfer or other disposition the Holder hereof shall have been
given a reasonable opportunity to then elect to receive upon the exercise of the
Warrants either the capital stock, securities or assets then issuable with
respect to the Common Stock or the capital stock, securities or assets, or the
equivalent, issued to previous holders of the Common Stock in accordance with
such offer.

     3.6  Record Date.  In case the Company shall take a record of the holders
of its Common Stock for the purpose of entitling them (i) to receive a dividend
or other distribution payable in Common Stock or any stock or securities
convertible into or exchangeable for Common Stock ("Convertible Securities"), or
options, rights or warrants to acquire same ("Options"), or (ii) to subscribe
for or purchase Common Stock, Convertible Securities or Options, then such
record date shall be deemed to be the date of the issuance or sale of the Common
Stock, Convertible Securities or Options deemed to have been issued or sold as a
result of the declaration of such dividend or the making of such other
distribution or the date of the granting of such right of subscription or
purchase, as the case may be..

     3.7  Adjustment for Asset Distribution.  If the Company declares a dividend
or other distribution payable to all holders of shares of Common Stock in
evidences of indebtedness of the Company or other assets of the Company
(including, cash (other than regular cash dividends declared by the Board of
Directors), capital stock (other than Common Stock, Convertible Securities or
Options) or other property), the Exercise Price in effect immediately prior to
such declaration of such dividend or other distribution shall be reduced by an
amount equal to the amount of such dividend or distribution payable per share of
Common Stock, in the case of a cash dividend or distribution, or by the fair
value of such dividend or distribution per share of Common Stock (as reasonably
determined in good faith by the Board of Directors of the Company), in the case
of any other dividend or distribution.  Such reduction shall be made whenever
any such dividend or distribution is made and shall be effective as of the date
as of which a record is taken for purpose of such dividend or distribution or,
if a record is not taken, the date as of which holders of record of Common Stock
entitled to such dividend or distribution are determined.

     3.8  De Minimis Adjustments.  No adjustment in the number of shares of
Common Stock purchasable hereunder shall be required unless such adjustment
would require an increase or decrease of at least one share of Common Stock
purchasable upon an exercise of each Warrant and no adjustment in the Exercise
Price shall be required unless such adjustment would require an increase or
decrease of at least $.01 in the Exercise Price; provided, however, that any
adjustments which by reason of this Section 3.8 are not required to be made
shall be carried forward and taken into account in any subsequent adjustment.
All calculations shall be made to the nearest full share or nearest one
hundredth of a dollar, as applicable.

                                      -8-
<PAGE>
 
     3.9  Notice of Adjustment.  Whenever the Exercise Price or the number of
Warrant Shares issuable upon the exercise of the Warrant shall be adjusted as
herein provided, or the rights of the Holder hereof shall change by reason of
other events specified herein, the Company shall compute the adjusted Exercise
Price and the adjusted number of Warrant Shares in accordance with the
provisions hereof and shall prepare an Officer's Certificate setting forth the
adjusted Exercise Price and the adjusted number of Warrant Shares issuable upon
the exercise of the Warrant or specifying the other shares of stock, securities
or assets receivable as a result of such change in rights, and showing in
reasonable detail the facts and calculations upon which such adjustment or other
changes are based, and shall obtain an opinion of the Company's independent
accountants as to the correctness of such adjustments and calculations and to
the effect that such adjustments and calculations have been made in accordance
with the terms hereof.  The Company shall cause to be mailed to the Holder
hereof copies of such Officer's Certificate and an independent accountants'
opinion together with a notice stating that the Exercise Price and the number of
Warrant Shares purchasable upon exercise of the Warrants have been adjusted and
setting forth the adjusted Exercise Price and the adjusted number of Warrant
Shares purchasable upon the exercise of the Warrants.

     3.10 Notifications to Holders.  In case at any time the Company proposes:

          (i)   to offer for subscription pro rata to all of the holders of its
Common Stock any additional shares of capital stock of any class or other
rights;

          (ii)  to effect any capital reorganization, or reclassification of the
capital stock of the Company, or consolidation, merger or share exchange of the
Company with another Person, or sale, transfer or other disposition of all or
substantially all of its assets; or

          (iii) to effect a voluntary or involuntary dissolution,
liquidation or winding up of the Company,

then, in any one or more of such cases, the Company shall give the Holder hereof
(a) at least 15 days (but not more than 90 days) prior written notice of the
date on which the books of the Company shall close or a record shall be taken
for such dividend, distribution or subscription rights or for determining rights
to vote in respect of any such issuance, reorganization, reclassification,
consolidation, merger, share exchange, sale, transfer, disposition, dissolution,
liquidation or winding up, and (b) in the case of any such issuance,
reorganization, reclassification, consolidation, merger, share exchange, sale,
transfer, disposition, dissolution, liquidation or winding up, at least 15 days
(but not more than 90 days) prior written notice of the date when the same shall
take place.  Such notice in accordance with the foregoing clause (a) shall also
specify, in the case of any such dividend, distribution or subscription rights,
the date on which the holders of Common Stock shall be entitled thereto, and
such notice in accordance with the foregoing clause (b) shall also specify the
date on which the holders of Common Stock shall be entitled to exchange their
Common Stock, as the case may be, for securities or other property deliverable
upon such reorganization, reclassification, consolidation, merger, share
exchange, sale, transfer, disposition, dissolution, liquidation or winding up,
as the case may be.

                                      -9-
<PAGE>
 
     3.11 Company to Prevent Dilution. If any event or condition occurs as to
which other provisions of this Article III are not strictly applicable or if
strictly applicable would not fairly protect the exercise or purchase rights of
the Warrants evidenced hereby in accordance with the essential intent and
principles of such provisions, or that might materially and adversely affect the
exercise or purchase rights of the Holder hereof under any provisions of this
Warrant, then the Company shall make such adjustment in the application of such
provisions, in accordance with such essential intent and principles, so as to
protect such exercise and purchase rights as aforesaid, and any adjustment
necessary with respect to the Exercise Price and the number of Warrant Shares
purchasable hereunder so as to preserve the rights of the Holder hereunder.  In
no event shall any such adjustment have the effect of increasing the Exercise
Price as otherwise determined pursuant to this Article III except in the event
of a combination of shares of the type contemplated in Section 3.4 hereof, and
then in no event to an amount greater than the Exercise Price as adjusted
pursuant to Section 3.4 hereof.

     3.12 Common Shares.  For purposes of this Article 3, the term "common
shares" shall mean (i) the Common Stock or (ii) any other class of stock
resulting from successive changes or reclassifications of such Common Stock
consisting solely of changes in par value, or from no par value to par value, or
from par value to no par value.  If at any time as a result of an adjustment
pursuant to Article 3 a holder of shares of Preferred Stock thereafter
surrendered for conversion shall become entitled to receive any shares of the
Corporation other than common shares, thereafter the number of such other shares
so receivable upon  conversion of shares of Preferred Stock shall be subject to
adjustment from time to time in a manner and on terms as nearly equivalent as
practicable to the provisions with respect to the common shares in Article 3,
and the other provisions of this Article 3 with respect to the common shares
shall apply on like terms to any such other shares.

                                  ARTICLE IV
                                 MISCELLANEOUS

     4.1  Notices.  Any notice or other document required or permitted to be
given or delivered to the Holder of this Warrant and the Holder of the Warrant
Shares shall be sent by certified or registered mail to each such Holder at the
address shown on such Holder's Warrant or such other address as shall have been
furnished to the Company in writing by such Holder.  Any notice or other
document required or permitted to be given or delivered to the Company shall be
sent by certified or registered mail to the principal office of the Company, 215
South State, Suite 550, Salt Lake City, Utah, or such other address as shall
have been furnished to the Holder of this Warrant and the Holder of Warrant
Shares by the Company.

     4.2  Governing Law.  This Warrant shall be governed by the laws of the
State of Texas, without respect to the law or principles of conflicts-of-law of
any state.

     4.3  Entire Agreement.  This Warrant, together with the Agreement, contain
the entire agreement between the Holder hereof and the Company with respect to
the Warrant Shares

                                      -10-
<PAGE>
 
purchasable upon exercise hereof and the related transactions and supersedes all
prior arrangements or understandings with respect thereto.

     4.4  Waiver and Amendment.  Any term or provision of this Warrant may be
waived at any time by the party which is entitled to the benefits thereof and
any term or provision of this Warrant may be amended or supplemented at any time
by agreement of the Holder hereof and the Company, except that any waiver of any
term or condition, or any amendment or supplementation, of this Warrant shall be
in writing.  A waiver of any breach or failure to enforce any of the terms or
conditions of this Warrant shall not in any way effect, limit or waive a party's
rights hereunder at any time to enforce strict compliance thereafter with every
term or condition of this Warrant.

     4.5  Illegality.  ln the event that any or more of the provisions contained
in this Warrant shall be determined to be invalid, illegal or unenforceable in
any respect for any reason, the validity, legality and enforceability of any
such provision in any other respect and the remaining provisions of this Warrant
shall not, at the election of the party for whom the benefit of the provision
exists, be in any way impaired.

     4.6  Exchange, Loss, Destruction, etc. of Warrant.  Upon receipt of
evidence satisfactory to the Company of the loss, theft, mutilation or
destruction of this Warrant, and in the case of any such loss, theft or
destruction upon delivery of a bond of indemnity or such other security in such
form and amount as shall be reasonably satisfactory to the Company, or in the
event of such mutilation upon surrender and cancellation of this Warrant, the
Company will make and deliver a new Warrant of like tenor, in lieu of such lost,
stolen, destroyed or mutilated Warrant.  Any Warrant issued under the provisions
of this Section 4.6 in lieu of any Warrant alleged to be lost, destroyed or
stolen, or in lieu of any mutilated Warrant, shall constitute an original
contractual obligation on the part of the Company.  This Warrant shall be
promptly canceled by the Company upon the surrender hereof in connection with
any exchange or replacement.  The Company shall pay all taxes (other than
securities transfer taxes) and all other expenses and charges payable in
connection with the preparation, execution and delivery of Warrants pursuant to
this Section 4.6.

     4.7  Registration Rights.  The Warrants Shares shall be entitled to such
registration rights under the Securities Act and under applicable state
securities laws as are specified in the Stock Purchase Agreement.

     4.8  Headings.  The Article and Section and other headings herein are for
convenience only and are not a part of this Warrant and shall not affect the
interpretation thereof.

                                      -11-
<PAGE>
 
     IN WITNESS WHEREOF, the Company has caused this Warrant to be signed in its
name by an authorized officer and accepted by the Holder as of the _________ day
of __________, 1997.

                                    CROWN ENERGY CORPORATION


                                    By:__________________________________
                                    Name: _______________________________
                                    Title: ______________________________


ACCEPTED:

DATE: ____________________


ENRON CAPITAL & TRADE RESOURCES CORP.


By:___________________________________
Name: ________________________________
Title: _______________________________

                                      -12-
<PAGE>
 
                                  ASSIGNMENT

                    TO BE EXECUTED BY THE REGISTERED HOLDER
                     IF IT DESIRES TO TRANSFER THE WARRANT


     Subject to the provisions of Section 2.3, for value received,
_______________________ hereby sells, assigns and transfers unto
________________________ the right to purchase _________ shares of Common Stock,
evidenced by the within Warrant, and does hereby irrevocably constitute and
appoint ___________________ Attorney to transfer the said Warrant on the books
of the Company, with full power of substitution.


                              _________________________________________
                              Signature


                              _________________________________________ 

                              _________________________________________
                              Address

Dated:_____________________

In the presence of:


___________________________ 


                                     NOTICE

     The signature of the foregoing Assignment must correspond to the name as
written upon the face of the within Warrant in every particular, without
alteration or enlargement or any change whatsoever.

                                      -13-
<PAGE>
 
                              NOTICE OF EXERCISE

                    TO BE EXECUTED BY THE REGISTERED HOLDER
                     IF IT DESIRES TO EXERCISE THE WARRANT

     The undersigned hereby exercises the right to purchase such number of
shares of stock covered by this Warrant according to the conditions thereof and
herewith makes full payment of the Exercise Price for such shares.



                              _________________________________________
                              Signature


 
                              _________________________________________

                              _________________________________________ 
                              Address


Dated:____________________

                                      -14-

<PAGE>
 
                                                                       EXHIBIT 4
                                                              Document No. 16905

                          RIGHT OF CO-SALE AGREEMENT


     This Right of Co-Sale Agreement (this "Agreement") dated as of
September 25, 1997, is by and among Jay Mealey (together with any Affiliates,
the "Shareholder") and Enron Capital & Trade Resources Corp., a Delaware
corporation (the "Investor").


                                  WITNESSETH:

     WHEREAS, the Shareholder and the Investor are the owners of common stock
(the "Common Stock") of Series A Preferred Stock (the "Preferred Stock;"
together with all other capital stock of the Corporation, the "Securities") of
Crown Energy Corporation (the "Corporation"); and

     WHEREAS, the Corporation and the Investor are parties to that certain Stock
Purchase Agreement dated of even date herewith (the "Stock Purchase Agreement"),
and as a condition of the Investor becoming a party to the Stock Purchase
Agreement, the Shareholder has agreed to execute this Agreement; and

     WHEREAS, certain capitalized terms used herein shall have the meanings
assigned to them in the Stock Purchase Agreement; and

     WHEREAS, the parties hereto agree that the success of the Corporation
requires the active interest and support of the Shareholder and the Investor and
therefore desire to promote the best interests of the Corporation and their
mutual interests by imposing certain requirements with respect to the
transferability of the Securities of the Corporation owned by the parties
hereto;

     NOW, THEREFORE, for and in consideration of the promises and the mutual
covenants hereinafter set forth, and for other good and valuable consideration,
the parties hereby agree as follows:

                                   ARTICLE I
                               RIGHT OF CO-SALE

     SECTION 1.   Right of Co-Sale.  The Shareholder agrees that he shall not
Sell any Securities or any interest therein to any Person, except in accordance
with the terms of this Agreement, for a period of five (5) years from the date
hereof (the "Restrictive Period").

          1.1  "Sale", "Sell" or "Sold" shall mean and include any sale, gift or
other form of transfer, conveyance, disposal or encumbrance, whether voluntary
or involuntary, including any dividend or distribution and the pledging of any
security, and whether direct or indirect or alone or in a series of related
transactions.
<PAGE>
 
          1.2  Before the expiration of the Restrictive Period, if the
Shareholder receives a good faith, non-collusive offer to purchase such
Securities (an "Offer") which the Shareholder desires to accept, the Shareholder
shall first give written notice ("Notice") to the Investor as provided below.

          1.3  The Notice shall be sent to the Investor in compliance with the
terms of this Agreement and shall set forth:

               (a) the number of Securities and the interest therein that the
Shareholder desires to Sell;

               (b) the name of any proposed purchaser (the "Offeror") and a
description of the Offer,

               (c) the cash consideration per share to be received by the
Shareholder in connection with the Offer, or if the consideration is other than
cash or partly in cash and partly in the form of other consideration, the nature
of the other consideration to be received (with a reasonable description
thereof) and the other material terms and conditions of such proposed Sale; and

               (d) the address of the Shareholder at which the Investor may give
any notice required herein.

          1.4  The Investor shall have fifteen (15) days after receipt of the
Notice to notify the Shareholder as to its decision to exercise rights of co-
sale hereunder (the "Acceptance Period"). The Investor will include in such
notice the number of Securities that the Investor wishes to Sell in the Sale
contemplated by the Offer (the "Sale Transaction").

               (a) Upon receiving notice that the Investor has opted to exercise
its rights of co-sale hereunder, the Shareholder shall use his best efforts to
interest the Offeror in purchasing all of the Securities designated by the
Investor as well as those proposed to be Sold by the Shareholder. If the Offeror
does not wish to purchase all of the Securities with respect to which the
Investor has exercised rights of co-sale, Section 1.4(b) hereof shall govern.

               (b) If the Offeror does not wish to purchase all of the
Securities with respect to which the Investor has exercised rights of co-sale
hereunder, the Investor may participate in the Sale Transaction by selling all
or part of its pro-rata share of Securities to the proposed purchaser (the
"Participating Shares") on the terms contemplated by the Offer, along with the
pro-rata share of the Shareholder's Securities. For purposes of this Section, a
party's pro-rata share means, with respect to each party participating in the
Sale Transaction, the proportion (expressed as a percentage) that its ownership
of Securities (calculated, in the case of Preferred Stock, with respect to the
number of shares of Common Stock into which the Preferred Stock may be
converted) bears to the aggregate number of Securities (calculated, in the case
of Preferred Stock, with respect to the number of shares of Common Stock into
which the Preferred Stock may be converted) that the

                                      -2-
<PAGE>
 
number of shares of Common Stock into which the Preferred Stock may be
converted) that the Shareholder and Investor desire to Sell in the Sale
Transaction.

     SECTION 2.  Certain Exempt Transactions.

            2.1  The rights of the Investor under Section 1 hereof shall not
apply to any Sale of the Shareholder's Securities which does not involve at
least:

                 (a) fifty percent (50%) of the Securities owned by the
Shareholder; and

                 (b) more than fifty percent (50%) of the outstanding Securities
of the Company, calculated by taking into consideration the number of shares of
Common Stock into which any outstanding Preferred Stock may be converted.

     IN WITNESS WHEREOF, signed this 25th day of September, 1997.


                                         INVESTOR:

                                         ENRON CAPITAL & TRADE
                                         RESOURCES CORP.


                                         By:    /s/ TONY A. VALENTINE
                                         Name:  Tony A. Valentine
                                         Title: Director


                                         SHAREHOLDER:
                                          
                                         /s/ JAY MEALEY
                                         ___________________________________
                                         Jay Mealey
 

                                      -3-


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