Operations in Peru
See entry on La Oroya for more details
Doe Run owns 99.97% of the La Oroya polymetallic smelter. It was established by the American Cerro de Pasco Corporation in 1922, was nationalized and became the property of Centromin in 1974 and was then privatized in 1997 when Doe Run bought it for US$247 million. It consists of a copper and lead smelter and zinc refinery. These are closely integrated and have additional circuits to recover byproducts, particularly from the 'dirty concentrates' produced by a number of local mines They include gold and silver (mainly from refinery residues), antimony, arsenic trioxide, bismuth, cadmium, indium, selenium, tellurium, sulfuric acid and oleum. Production in 2006 was 48,600 metric tons of copper, 120,600 metric tons of lead, 45,000 metric tons of zinc, 34 million troy ounces (1,060 metric tons) of silver and 67,000 troy ounces (2,080 kilograms) of gold.
The company also owns the Cobriza copper mine, south of La Oroya, bought for US$7.5 million to ensure at least part of the concentrate supply to the smelter. It produced 16,244 metric tons of copper in concentrate in 2006 and had reserves of 6.5 million metric tons grading 1.2% copper.
Read more about this topic: Doe Run Company
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