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Loading whole round end
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Wagon loaded time 4 1/2 minutes
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Loading 3 50 ft middle pieces at once
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Hydraulic mine near Leadville, Colo.
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Grant's Smelter, Denver, Col.
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Baltimore & Ohio R.R. derailment, engine 4247, wrecking derrick X41, Akron, OH
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B & O hand wreck crane D32 lt wt. 40,900, PO 9-37 Portsmouth terminal, OH
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Mining hoists
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Kekionga Shaft House 1948
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Central City. Prospectors Windlass 1898
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Caribou, Colo. early mine machinery 1941
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Nevadaville 1938
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Shaft house interior
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Kekionga Shaft House
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Man next to winch
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Shovel & flatcars
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Line change in canyon
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Quarry
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Quarry
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Quarry
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Ruby Canyon - clamshell
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Unknown mine
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Miners in a shaft house
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