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    • Placer mining

    • Placer mining

    • Men pose near monitor nozzles probably for a U.S. Gold Placers mining operation near the San Miguel River in Montrose County or San Miguel County, Colorado. Piles of large rocks anchor the nozzles and the water pipe that supplies the monitors.

    • Gold mining.; Hydraulic mining--1880-1890.; Miners.; Rivers.

    • [between 1880 and 1890?]
    • U.S. Gold placer no. 6, San Miguel River : building flume

    • U.S. Gold placer no. 6, San Miguel River : building flume

    • Men work on a flume for a U.S. Gold Placers mining operation beside the San Miguel River in Montrose or San Miguel County, Colorado. The workmen pose near a wooden flume that is under construction. Shows piles of lumber.

    • San Miguel River (Colo.-Utah)--1880-1890.; Construction.; Flumes.; Gold mining.; Hydraulic mining.; Laborers.; Rivers.

    • [between 1880 and 1890?]

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