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Mining at Dolores is by standard open pit methods using shovels, loaders, and haul trucks. In addition, a new underground mine is in development. The mine uses conventional cyanide heap leaching to produce gold and silver doré. The high grade portion of the mined material is processed through the pulp agglomeration treatment plant and is conveyed with the crushed lower grade portion of the mined material to the heap leach pads for leaching.