Title to the San Jose property is held by Minera Santa Cruz, S.A. ("MSC"), the holding and operating company set up under the terms of an option and Joint Venture Agreement between McEwen Mining Inc. (49%) and Hochschild Mining Argentina (51%), a wholly-owned subsidiary of Hochschild.

The mineralisation at the San Jose property represents a low sulphidation type with quartz sulphide veins with economic silver and gold values and has geological and mineralogical characteristics similar to those of the Company’s Peruvian operations. San Jose commenced operations in June 2007 and the deposit is mined using the cut and fill method. The plant at San Jose has a capacity of 1,500 tonnes per day.

In 2016 silver equivalent production at San Jose was 13,721 koz comprised of 6,691 koz of silver and 95.01 koz of gold production.

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At San Jose 1,240m was drilled in the fourth quarter mainly in the Aguas Vivas area with the programme continuing into 2017. In addition in 2017, 20,800 metres of drilling is also planned in the Platifero, Clara and Saavedra Norte structures.