EXHIBIT 23.1 CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS As independent public accountants, we hereby consent to the incorporation by reference of our report dated June 22, 2001, included in this Form 11-K of the Savings Plan of Southern Peru Copper Corporation into the Company's previously filed Form S-8 Registration Statement Nos. 333-02736 and 333-40293. Arthur Andersen LLP New York, New York June 22, 2001 B35