Palmarejo is a combined open pit and underground operation with a 2Mt/a carbon in leach (CIL) circuit. The mine is a co/by product gold producer with gold accounting for approximately 50% of net revenue over the life of mine. In 2015 the mine produced 71koz of gold and 5.1Moz of silver. Palmarejo is expected to transition into an underground only operation following the development of Independencia and Guadalupe deposits and cessation of open pit mining in 2016. Silver production accounts for a significant portion of revenue from the mine.