|
Doe Run Resources Corporation (registered to do business as the Doe Run Company) is the largest integrated lead producer in North America and the largest primary lead producer in the western world. It owns two primary lead smelters (only one is active , and that one will close on December 31, 2013), five mills (four of which are active), several mines, the world's largest secondary lead smelter, all in southeast Missouri, USA, a polymetallic smelter at La Oroya and copper mine at Cobriza, both in Peru, and lead fabricating facilities in Arizona and Washington.〔(''Doe Run 2006 10-K/A " )〕 It is wholly owned by the Renco Group which is in turn wholly owned by family trusts established by the company's Chairman and CEO, Ira Rennert. Total primary production in 2005 was 376,200 metric tons of lead, equivalent to 11.5% of world production that year.〔('' USGS 2005 lead statistics '' )〕 Doe Run also produced 123,800 metric tons of secondary lead and smaller tonnages of zinc and copper in concentrate.〔 ==Background== Doe Run started life in 1864 as the St. Joseph Lead Company, better known as St. Joe, which started lead mining on a small scale in southeastern Missouri. Despite the isolation and hardships of those days, it prospered and in 1892 it started up its smelter in Herculaneum, where all smelting was consolidated in 1920. It was active elsewhere and eventually owned mines (now disposed of) in South America and zinc operations in New York State, USA.〔(''History of St. Joe Lead Company '' )〕 It also built up a portfolio of gold mines and prospects, including Chile's largest gold mine, El Indio, which became St. Joe Gold. It was sold in the 1980s and is now part of Barrick Gold. With the gradual exhaustion of the Old Lead Belt after World War II, St. Joe and others explored other areas in southeastern Missouri and found more lead/zinc deposits, including the extensive Viburnum Trend on which Doe Run's U.S. mining operations are now concentrated. In 1981, St. Joe was acquired by the Fluor Corporation. In 1986 St. Joe and Homestake Lead formed a short lived partnership called the Doe Run Company which brought Homestake's Buick mine, mill and smelter into St. Joe. After dissolution of the partnership, St. Joe converted the Buick smelter for lead recycling, which grew to be the biggest single site facility in the world. In 1994, the Renco Group acquired St. Joe from Fluor and renamed the company the Doe Run Resources Corporation, registered to do business as the Doe Run Company. In 1994, Doe Run acquired lead fabricating facilities, and in 1997 it more than doubled in size with the purchase of the La Oroya smelter and Cobriza copper mine in Peru. 1998 saw the acquisition of ASARCO's Missouri Lead Division and its two mines and mills.〔(''Doe Run company information '' )〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Doe Run Company」の詳細全文を読む スポンサード リンク
|