Exhibit 23.1 Form 10-K Consent of Independent Accountants We consent to the incorporation by reference in the Registration Statements on Form S-8 (File Nos. 333-02736 and 333-40293) of Southern Peru Copper Corporation of our report dated March 10, 2000, relating to the financial statements which appears in this Form 10-K. PricewaterhouseCoopers LLP New York, New York March 15, 2000