The Robinson mine is located in White Pine County, Nevada, USA, in the Egan Range, at an average altitude of 2 130 m.a.s.l The mine is comprised of 3 large pits: Liberty (mining re-commenced in 2013), Tripp-Veteran (closed) and Ruth, currently in operation. A concentrating plant and a tailings pond are also a part of the complex.
The mine’s beginnings can be traced back to 1876. Since then, with some minor breaks, copper, gold and silver and recently molybdenum have been extracted. KGHM INTERNATIONAL LTD. acquired the mine in April 2004, after it was closed due to low copper prices.
The mine reached full production capacity in October 2004.
Mining is conducted by conventional open-pit methods. It comprises extraction using blasting materials and dump trucks, loading and ore transport to a processing plant. The ore is crushed and then subjected to flotation. The acquired concentrate is thickened and filtered.
In 2015, the Robinson mine produced 57 thousand. tons of copper toll and 56 700 ounces of gold. It is worth mentioning that the mine also produces small amounts of molybdenum concentrate.