High Quality Content by WIKIPEDIA articles! 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), 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. 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. Doe Run also produced 123,800 metric tons of secondary lead and smaller tonnages of zinc and copper in concentrate.