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...

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...

Sophie Hamrick Knight, on the divide between Cross Creek and West Cross Creek. She is posed with the dog, "Hound," and burros Lucky and The Kid. She and Tom Knight were prospecting at the time. Verso: "Mom on the divide between Cross Creek and West Cross Creek with burros, Lucky and The Kid, and dog, The Houn'. 1938[?] Prospecting"