EXHIBIT 23.1


CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS

As independent public  accountants,  we hereby consent to the incorporation
of our reports  included in this Form 11-K, into the Company's  previously filed
Registration  Statement  File  No.  33-65418,  Registration  Statement  File No.
333-032891,  Registration  Statement File No. 333-03303,  Registration Statement
File No. 333-32170, and Registration Statement File No.333-53367.


                                        ARTHUR ANDERSEN LLP

Albuquerque, New Mexico
May 24, 2001