Exhibit 21.1 SOUTHERN PERU COPPER CORPORATION Subsidiaries (More than 50% ownership) Percentage of voting securities owned Or other bases Name of Company of control --------------- ---------- PARENT: Southern Peru Holdings Corporation (Delaware) Registrant: Southern Peru Copper Corporation (Delaware) Los Tolmos S.A.(Peru) 99.99 Logistics Services Incorporated (Delaware) 100.0 LSI-Peru, S.A. (Peru) 98.18 Multimines Insurance Company, Ltd. (Bermuda) 100.0 Not included in this listing are subsidiaries which in the aggregate would not constitute a significant subsidiary.