Palmarejo commenced operations in 2009 as a combined open pit and underground operation. The property comprises the Palmarejo mine and mill facilities, Guadalupe and Indepencia underground mines. Ore is processed in a 2Mt/a carbon-in-leach (CIL) circuit to produce gold and silver. Palmarejo is transitioning into an underground only operation following the development of Independencia and Guadalupe deposits, and cessation of open pit mining in 2016. In 2016, the mines produced 74koz of gold and 4.4Moz of silver. Combined production of 110 - 120koz of gold and 6.5 - 7Moz of silver is expected from the underground mines in 2017.