1 EXHIBIT 23.2 CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS As independent public accountants, we hereby consent to the incorporation by reference of our reports included in this Form 10-K, into the Company's previously filed Registration Statements File Nos. 33-76526, 33-80454, 33-88302, 333-2818 and 333-07457. ARTHUR ANDERSEN LLP Phoenix, Arizona, September 29, 1997.