Smelting began at the El Paso smelter site in 1887 with a small lead smelter designed to treat Mexican ores, and in 1889 was incorporated into the newly organised Asarco. Copper smelting facilities were added at the turn of the century to treat the increasing production from mines in the Southwest USA. Considerable expansion and improvement of the copper smelter took place in the 1970s. The lead smelter and the zinc fuming plant were shutdown in 1985, and the cadmium plant was shutdown in...
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