Tres Valles SxEw comprises Papomono underground mine, Don Gabriel open pit mine and a SX-EW plant. The plant is designed to produce up to 18.5ktpa of copper cathode. In early 2014, mining operations ceased. However, the plant continued to produce copper cathode through purchase of mineral from third parties. In October 2015, mining operations resumed. However, the plant is not working at maximum capacity and most of the ore still comes from third parties.