The Group’s mining operations produce copper with by-products of gold, molybdenum and silver. Los Pelambres and Centinela produce copper concentrate containing gold and silver, which is sold to smelters for further processing and refining into copper cathodes as well as producing gold and silver. Centinela also produces copper cathodes, as do Antucoya and Zaldívar, which are sold to fabricators. In addition, Los Pelambres produces molybdenum concentrate, which is sold to roasters for further processing and refining.