DYNECO INTERNATIONAL, INC.

                        1993 CORPORATE STOCK OPTION PLAN

                             STOCK OPTION AGREEMENT


     THIS AGREEMENT is made as of May 1, 1993, between DynEco International, 
Inc., a Minnesota corporation (the "Company"), and Thomas C. Edwards (the 
"Optionee").

     THE PARTIES AGREE AS FOLLOWS:

     1.   OPTION GRANT.  The Company hereby grants to the Optionee an option 
(the "Option") to purchase the number of shares of the Company's Common Stock 
(the "Shares"), for an exercise price per share (the "Option Price") and 
based upon a Grant Date, all as set forth below:

          Shares under option: 100,000

          Option Price per Share: $1.00

          Grant Date: May 1, 1993

The Option will be subject to all of the terms and conditions set forth 
herein and in the Company's 1993 Corporate Stock Option Plan (the "Option 
Plan"), a copy of which is attached hereto and incorporated by reference.  
The Option granted hereunder will be a nonstatutory or nonqualified option 
for tax purposes.

     2.   EXERCISE PRICE.  The Optionee may pay the Option Price for Shares, 
in his or her sole discretion, by either:

          (a)  by paying the Option Price in cash; or

          (b)  by paying with Previously Acquired Shares; or

          (c)  by paying the Option Price through surrendering that number of
               Options covering the number of underlying shares of Common Stock
               the fair market value of which shares equal the Option Price.

     3.   STOCKHOLDER RIGHTS.  No rights or privileges of a stockholder in 
the Company are conferred by reason of the granting of the Option.  Optionee 
will not become a stockholder in the Company with respect to the Shares 
unless and until the Option has been properly exercised and the Option Price 
fully paid as to the portion of the Option exercised.

                                      1



     4.   TERMINATION.  Subject to earlier termination as provided in the 
Option Plan, this Option will expire, unless previously exercised in full, on 
December 31, 1998.

     5.   TERMS OF THE OPTION PLAN. The Optionee understands that the Option 
Plan includes important terms and conditions that apply to this Option.  
Those terms include (without limitation): important conditions to the right 
of the Optionee to exercise the Option; important restrictions on the ability 
of the Optionee to transfer the Option or to transfer Shares received upon 
exercise of the Option; and early termination of the Option following the 
occurrence of certain events, including the Optionee no longer being an 
officer, director or employee to or of the Company or its subsidiaries.  THE 
OPTIONEE ACKNOWLEDGES THAT HE OR SHE HAS READ THE OPTION PLAN, AGREES TO BE 
BOUND BY ITS TERMS, AND MAKES EACH OF THE REPRESENTATIONS REQUIRED TO BE MADE 
BY THE OPTIONEE UNDER IT.

     6.   MISCELLANEOUS.  This Agreement (together with the Option Plan) sets 
forth the complete agreement of the parties concerning the subject matter 
hereof, superseding all prior agreements, negotiations and understandings.  
This Agreement will be governed by the substantive law of the State of 
Minnesota, and may be executed in counterparts.

     The parties hereby have entered into this Agreement as of the date set 
forth above.

                         DYNECO INTERNATIONAL, INC.

                         By ________________________________________
                            An Authorized Officer



                         OPTIONEE:

                         ___________________________________________
                         Thomas C. Edwards 
                         Address:
                         
                         ___________________________________________

                         ___________________________________________

                         ___________________________________________

Attachments:   (1)  Spousal Consent
               (2)  1993 Corporate Stock Option Plan



                                            2



                                 SPOUSAL CONSENT


     The undersigned is the spouse of the Optionee referred to in the 
attached DynEco International, Inc. 1993 Corporate Stock Option Plan 
Agreement (the "Agreement").  The undersigned acknowledges that he or she:

     1.   has received, reviewed and understands the terms of the Agreement
     (including its attachments);

     2.   consents to the Agreement, and agrees to be bound by its terms to the
     extent that he or she now has or may obtain any interest in the Option or
     Shares covered by the Agreement; and

     3.   understands that the Company is relying upon this consent in entering
     into the Agreement and in not taking further steps to protect its
     interests.

Date:  May __, 1993

                            _________________________________________
                            Print Name:

                            _________________________________________