Casposo comprises a small open pit and an underground mine in San Juan province, Argentina, exploiting a gold-silver low sulphidation epithermal deposit. Commercial production was achieved in March 2011. The operation started as an open pit and transitioned into an underground mine in 2013. Approximately 400-500kt of ore are processed per year using a Merrill-Crowe plant producing silver/gold dore. The operation was under review in 2015, and all mining operations ceased in February 2016. However, in September 2017, operations recommenced.