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The arrastra has been used since the Phoenicians to grind ores, most often gold or silver. The construction involves a circular pit paved with flat stones. Large flat-bottomed drag stones are connected to a center post by a long arm. Using horse, mule or human power, the arm drags the large stones over the ore, crushing it. This arrastra at the Gold Bug Mine was powered by a waterwheel, clearly evident in the photograph. It is a cheap but effective...
2. Stamp Mill
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The Glengarry Mine site at 11,414 ft., Holy Cross Mining District. Middle Mountain has an elevation of 12,336 feet.
From the Eagle County Assessment Roll 1891-92 p.8: "Glengary #4354, 5.166 acres, value $60; Hidden Treasure #4353, 4.596 acres, value $50."
From the Eagle County Assessment Roll 1922. Transit Gold Mining Co. [Red Cliff School District 1 Holy Cross Mines] owned Glengary, Hidden Treasure and the Transit mines. Glengary was valued at...