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  • All fields: Hydraulic mining--Colorado--1870-1890.
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    • Dredging

    • Dredging

    • Two well-dressed women and a man pose on the shore in front of a hydraulic placer gold mining dredge, possibly in Clear Creek or Jefferson County, Colorado.

    • Dredges--Colorado--1870-1890.; Gold mining--Colorado--1870-1890.; Hydraulic mining--Colorado--1870-1890.; Mining--Colorado--1870-1890.

    • [between 1870 and 1890?]
    • Dredge

    • Dredge

    • Two well-dressed women and a man stand next to a hydraulic placer gold mining dredge, possibly in Clear Creek or Jefferson County, Colorado.

    • Dredges--Colorado--1870-1890.; Gold mining--Colorado--1870-1890.; Hydraulic mining--Colorado--1870-1890.; Mining--Colorado--1870-1890.

    • [between 1870 and 1890?]
    • Sluicing

    • Sluicing

    • Three Chinese men sluice for gold near an embankment in Colorado. Shows a wooden mine sluice.

    • Chinese Americans--Colorado--1870-1890.; Gold mining--Colorado--1870-1890.; Hydraulic mining--Colorado--1870-1890.; Mining--Colorado--1870-1890.; Sluices--Colorado--1870-1890.

    • [between 1878 and 1881?]

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