Compania de Minas Buenaventura S.A.
Compañía de Minas Buenaventura S.A.A. engages in the exploration, mining, concentration, smelting, and marketing of polymetallic ores and metals in Peru. It explores for gold, silver, lead, zinc, and copper deposits. The company operates operating mining units, including Tambomayo located in the Caylloma province; Orcopampa Unit located in the province of Castilla; Uchucchacua located in province of Oyón; and Julcani located in province of Angaraes, Peru, as well as San Gabriel located in the province of General Sánchez Cerro, in the Moquegua region. It also owns interests in Colquijirca, La Zanja, Cerro Verde, El Brocal, Coimolache, Yumpaq, San Gregorio mines, and Trapiche mining unit. In addition, the company owns and operates a monohydrate manganese sulphate crystallization plant; and hydroelectric power plants. Compañía de Minas Buenaventura S.A.A. was incorporated in 1953 and is based in Lima, Peru.
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United States Lime & Minerals, Inc. manufactures and supplies lime and limestone products in the United States. It extracts limestone from open-pit quarries and an underground mine, and processes it as pulverized limestone, quicklime, hydrated lime, and lime slurry. The company supplies its products primarily to the construction customers, including highway, road, and building contractors; industrial customers, such as paper and glass manufacturers; environmental customers comprising municipal sanitation and water treatment facilities, and flue gas treatment processes; oil and gas services companies; roof shingle manufacturers; and poultry producers. In addition, the company has various royalty interests with respect to oil and gas rights in natural gas wells located in Johnson County, Texas in the Barnett Shale Formation. The company was incorporated in 1950 and is headquartered in Dallas, Texas. United States Lime & Minerals, Inc. is a subsidiary of Inberdon Enterprises Ltd.
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