Cross Creek, Colorado
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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...
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Verso: "Don, Tom, Sam Anderson, and Harold Stoner at Gold Park cabin loading ore from the Glengarry Mine to be hauled to the Leadville smelter."
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Front: "Don single jacking, Glengarry mine"
MacDonald knight using a hammer and drilling steel to create holes in rock.
From the USDA Forest Service website:
"Single jacking involves an individual holding a drilling steel in one hand and hitting it with a hammer held in the other. The single jacks have 3- or 4-pound heads and 10-inch handles. The short handle helps you place blows accurately and resists breaking better than longer handles. Engineer's...
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Front: " '40, miners Glengarry June 1st, 1940"
Removing ore in an ore cart at the Glengarry [Glengary] Mine tunnel, June 1, 1940. Macdonald Knight is at left. Snow on the ground on June 1 is not that unusual for Cross Creek, given the altitude.
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An ore car sitting on mine tracks at the Glengarry Tunnel at Cross Creek, 1939.
7) Stamp Mill
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MacDonald Knight standing at the stamp mill house at Cross Creek in 1940.
Verso: "stamp mill house Cross Creek 1940;" stamp: "Empire Zinc Div, the New Jersey Zinc Co., Gilman, Colorado"
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Remains of the mineral mill at the head of Cross Creek . The mill serviced the Treasure Vault Mine.
