Teck is a diversified resource company committed to responsible mining and mineral development with business units focused on copper, zinc, steel making coal and energy. Teck Metals Ltd. produces and mines zinc and copper in Canada, the United States, and Peru. The company also produces lead, silver, and gold along with specialty metals such as germanium and indium. Its copper production comes from its interests in two copper mines, one a conventional milling operation producing copper concentrates and the other a heap leach mine employing advanced bio-leaching technology, producing cathode copper. Teck Metals Ltd. was formerly known as Teck Cominco Metals Ltd. and changed its name to Teck Metals Ltd. in June 2009. The company was founded in 1906 and is based in Toronto, Canada. As of July 20, 2001, Teck Metals Ltd. operates as a subsidiary of Teck Resources Limited.