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                                                                    EXHIBIT 23.2
 
                 CONSENT OF INDEPENDENT GEOLOGICAL CONSULTANTS
 
     As independent geological consultants, we hereby consent to the use of our
report (and to all references to our firm) included in or made a part of this
registration statement.
 
                                            /s/  Douglas International, Inc.
                                                --------------------------------
 
Denver, Colorado
   
December 20, 1996