Exhibit 24(a) CONSENT OF INDEPENDENT PUBLIC ACCOUNTANT ---------------------------------------- I consent to the use in this Registration Statement of my report, dated November 24, 1997, on the financial statements of Summa Metals Corporation, as of October 31, 1997 and December 31, 1996 and 1995, included herein and to the reference made to me under the caption "Experts" in the prospectus. /s/ Luxenberg & Associates ------------------------------- Luxenberg & Associates November 25, 1997 Rancho Santa Margarita, California - -------------------------------------------------------------------------------- 22431 Antonio Parkway, #BI60-457, Rancho Santa Margarita, California 92688 Tel: (714) 788-0402 Fax: (714) 788-0006