Compania de Minas Buenaventura SAA (Buenaventura) is a Peru-based mining company engaged in the exploration, mining, smelting and commercialization of gold and silver, as well as other metals and minerals. The Company operates directly seven Peruvian mining units located in Uchucchacua, Orcopampa, Poracota, Julcani, Recuperada, Antapite and Ishihuinca; as well as indirectly the mines of Shila-Paula, La Zanja and Colquijirca. Through its subsidiaries, the Company is also involved in the generation and distribution of electric power, as well as in the provision of engineering and chemical processing services. As of December 31, 2011, the Company owned such subsidiaries as Compania Minera Colquirrumi SA, Compania Minera Condesa SA, Empresa de Generacion Huanza SA, Buenaventura Ingenieros SA and Procesadora Industrial Rio Seco SA, among others.