SOUTHERN PERU COPPER CORPORATION 24. Name of Company  % (*)  Location Inscription in the RPMV 1  Grupo México, S.A. de C. V.  México  RAILROAD ACTIVITIES: 2  Infraestructura y Transportes México, S.A. de C.V.  99.99  Mexico  3  Grupo Ferroviario Mexicano  74.00  Mexico  MINING ACTIVITIES:  4  Grupo Minera México Internacional, S.A. de C.V.  99.99  Mexico  5  Americas Mining Corporation (AMC)  100.00  USA  6  Minera México, S. A. de C. V.  99.14  Mexico  7  Industrial Minera México, S.A. de C. V.  98.12  Mexico  8  Mexicana de Cobre, S.A. de C. V.  94.59  Mexico  9  Mexicana de Cananea, S.A. de C. V.  98.49  Mexico  10  ASARCO, Incorporated  100.00  USA  11  SPHC II, Incorporated  100.00  USA  12  SOUTHERN PERU COPPER CORPORATION (SPCC) 54.20  USA  X 1 13  Southern Peru Limited  100.00  USA  14  Logistics Services Incorporated (LSI)  100.00  USA  15  Global Natural Resources, Inc.  100.00  USA  16  Multimines Corporation  100.00  USA  17  Multimines Insurance Company, Ltd.  100.00  Bermuda  18  SOUTHERN PERU COPPER CORPORATION, SUCURSAL DEL PERU 82.40  Peru  X 2 19  Compañía Minera Los Tolmos S.A.  100.00  Peru  20  Southern Peru Copper Corporation, Agencia Chile 100.00  Chile  CORPORATE CAPITAL AND COMMON STOCK NOTES: 1.- Common Shares 2.- Labor Shares AUTHORIZATIONS OBTAINED FOR THE  DEVELOPMENT OF BUSINESS Corporate Capital and Common Stock  Shares The authorized number of shares are:  100,000,000  Issued an Paid-in Capital:  Class A Common shares  65,900,833 Common Shares outstanding  14,116,952 Nominal Value of Common Shares  US$ 0.01 Total number and percentage of shares   Shares  Interest  Southern Peru Holdings Corporation (*)  43,348,949  63.1% Cerro Trading Company, Inc.. (*)  11,378,088  16.6% Phelps Dodge Overseas Capital Corporation (*)  11,173,796  16.3% Common Shares  14,116,952  4.0% Total  80,017,785  100.0% (*) Class A common shares are entitled to five votes per share. Common shares are entitled to one vote per share. Based on Report N° 547-2002-EM/DGM/DPDM,  dated November 6th, 2002, the “Director General de  Minería” authorized the expansion of the Toquepala  Concentrator to a capacity of 60,000 MT/Day. Based on Report No. 266-99-EM/DGM/DPDM, dat- ed July 20, 1999, the “Director General de Minería”  authorized the expansion of the Cuajone Concentra- tor to a 87,000-Metric Ton/Day throughput. ares of surface land and authorized a throughput of  39,000 Metric Tons/Day. Based on Report No. 413-97-EM/DGM/DPDM dated  July 7, 1997, the “Director General de Minería” au- thorized the expansion of the Toquepala Concentra- tor to a 43,000-Metric Ton/Day throughput. 1.  Toquepala Concentrator: Authorized by Directorial  Resolution No. 455-91-EM/DGM/DCM, dated July  5, 1991, which approved the operation of the Toque- pala Concentrator. The resolution granted 240 hect- 3.  Toquepala Leaching Plant (SX/EW): Authorized by  Directorial Resolution No. 166-96-EM/DGM, dated  May 7, 1996, which approved the operation of the  Toquepala SX/EW plant. The resolution granted 60  hectares of surface land and authorized a throughput  of 11,850 Tons/Day.  2.  Botiflaca Concentrator in Cuajone: Authorized by  Directorial Resolution No. 150-81-EM/DCM, dated  August 14, 1981, which approved the operation of  the Cuajone Concentrator. The resolution granted 56  hectares of surface land. Based on Report No. 663-98-EM/DGM/DPDM,  dated November 10, 1998, the “Director General de  SOUTHERN PERU COPPER CORPORATION 25.