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  • All fields: Mining--Colorado--San Miguel County--1880-1890.
(9 results)



Display: 50

    • U. S. Gold Placers No 18, A.

    • U. S. Gold Placers mining operation No. 18, A. near the San Miguel River, Montrose County, Colorado. Two miners use hydraulic nozzles (monitors) fitted with rock counterbalances.
    • San Miguel County (Colo.)--1880-1890.; Gold miners--Colorado--San Miguel County--1880-1890.; Gold mining--Colorado--San Miguel County--1880-1890.; Hydraulic Mining--Colorado--San Miguel County--1880-1890.; Mining--Colorado--San Miguel...
    • December 16, 1887
    • Keystone placer just below Telluride

    • Keystone, a gold placer mine in San Miguel County, Colorado. A group of well-dressed men and women with a horse drawn wagon, stand on a hillside overlooking a mining operation. Water gushes out of a hydraulic nozzle (monitor) into a pit surrounded...
    • San Miguel County (Colo.)--1880-1890.; Gold mining--Colorado--San Miguel County--1880-1890.; Hydraulic Mining--Colorado--San Miguel County--1880-1890.; Mining--Colorado--San Miguel County--1880-1890.
    • [between 1880 and 1890?]
    • Keystone Placer Mine near Telluride, the giant at work

    • View of the Keystone Placer Mine near Telluride, (San Miguel County), Colorado; a miner wears a long coat and sprays an excavation site with a monitor nozzle fed by a segmented transport pipe.
    • Nozzles--Colorado--San Miguel County--1880-1890.; Keystone Mine (San Miguel County, Colo.)--1880-1890.; San Miguel County (Colo.)--1880-1890.; Hydraulic mining--Colorado--San Miguel County--1880-1890.; Miners--Colorado--San Miguel...
    • [between 1880 and 1890?]
    • Keystone Placer Mine, giant at work

    • View of mining operations at Keystone Mine, San Miguel County, Colorado. Shows a large water pipe on a log and hewn plank support as a hydraulic hose with a monitor nozzle sprays the hillside. A sluice box carries run-off down the slope. Shows a...
    • Keystone Mine (San Miguel County, Colo.)--1880-1890.; San Miguel County (Colo.)--1880-1890.; Hydraulic mining--Colorado--San Miguel County--1880-1890.; Mining--Colorado--San Miguel County--1880-1890.; Penstocks--Colorado--San Miguel...
    • [between 1880 and 1890?]
    • Marshal Basin looking north

    • View of the Smuggler-Union mines and cabins in Marshal Basin (San Miguel County), Colorado.
    • San Miguel County (Colo.)--1880-1890.; Cabins--Colorado--San Miguel County--1880-1890.; Mining--Colorado--San Miguel County--1880-1890.
    • [between 1890 and 1900]
    • Zigzag trail to Marshall Basin

    • View of mountain valley with zigzag dirt trail near large frame hillside buildings of the Pandora Mill of the Smuggler-Union Mine, near Pandora, San Miguel County, Colorado.
    • Pandora Mill (San Miguel County, Colo.)--1880-1890.; San Miguel County (Colo.)--1880-1890.; Mills--Colorado--San Miguel County--1880-1890.; Mining--Colorado--San Miguel County--1880-1890.; Trails & paths--Colorado--San Miguel County--1880-1890.
    • [between 1882 and 1890]
    • Marshall Basin Mines

    • Panoramic view of the mines at Marshall Basin (San Miguel County), Colorado; view above timberline shows rugged mountains and a natural basin with tailing piles. Wood frame offices, mill buildings, tents, dot the landscape. Shows a flume and a...
    • Basins (Geology)--Colorado--San Miguel County--1880-1890.; Marshall Basin (Colo.)--1880-1890.; San Miguel County (Colo.)--1880-1890.; General stores--Colorado--San Miguel County--1880-1890.; Mine buildings--Colorado--San Miguel County--1880-1890.;...
    • [between 1880 and 1890?]
    • Marshal [sic] Basin looking north

    • View of frame mine buildings, tailings piles and steep mountain slopes above timberline in Marshall Basin (San Miguel County), Colorado. A narrow road grade is on talus. Shows possibly buildings of the Smuggler-Union Mine among frame structures in...
    • Basins (Geology)--Colorado--San Miguel County--1880-1890.; Marshall Basin (Colo.)--1880-1890.; San Miguel County (Colo.)--1880-1890.; Mining--Colorado--San Miguel County--1880-1890.; Valleys--Colorado--San Miguel County--1880-1890.
    • [1889?]
    • Placer Mining on San Miguel River, Colo., U.S. Gold Placers, No. 26

    • Men stand beside hydraulic nozzles (monitors) fitted with rock counterbalances, or use shovels inside a wash, at a U.S. Gold Placers mining operation on the San Miguel River in San Miguel County, Colorado. Shows a water conduit and a wooden framed...
    • San Miguel County (Colo.)--1880-1890.; San Miguel River (Colo.)--1880-1890.; Gold mining--Colorado--San Miguel County--1880-1890.; Hydraulic mining--Colorado--San Miguel County--1880-1890.; Miners--Colorado--San Miguel County--1910-1920.;...
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