EXHIBIT 23.1
 
                   CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS
 
    As independent public accountants, we hereby consent to the incorporation of
our  report  included in  this Form  10-K, into  the Company's  previously filed
Registration Statements File #33-61697, File #33-63199, File #33-80660 and  File
#33-84502.
 
                                    /s/ ARTHUR ANDERSEN LLP
                                    ARTHUR ANDERSEN LLP
 
Albuquerque, New Mexico
August 12, 1996