The deposit was operated as an underground mine between 1923 and 1957. Open pit mining commenced in 1968 and the mine closed in 1996. The property straddles the Similkameen River (which will provide water for the mine) with the Ingerbelle deposit on the west side of the river and the Copper Mountain deposits on the east side of the river. The original mill complex is located on the Ingerbelle side and was connected to the Copper Mountain side by a conveyor system.
Copper Mountain is an alkalic porphyry copper deposit with associated gold and silver credits. The deposit was operated as an underground mine between 1925 and 1957. Open pit mining commenced in 1972 and the mine closed in 1996. Copper Mountain Mining Corp. and Mitsubishi Materials Corp re-commissioned the mine in 2011. The mill has a processing capacity of 40 ktpd and it consists of a primary and secondary crusher, grinding and flotation circuits. It produces copper concentrate with gold and silver credits. The concentrate is trucked to Vancouver port and shipped to Japan.
Construction of a permanent secondary crushing facility was completed in August 2014. Since its completion, they reached an average mill throughput of 35.1 ktpd in 2015 and 39.1 ktpd in 2016.