EXHIBIT 23.1     
                    
                 CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS     
   
  As independent public accountants, 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 (No. 333-56999).     
                                             
                                          Arthur Andersen LLP     
   
Denver, Colorado     
   
July 29, 1998