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  • All fields: Park County (Colo.)--1930-1950.
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    • Cooley Bros. dredge, gen. view dragline

    • View of a dragline crane and bucket at a hydraulic mining site on probably Beaver Creek in Park County, Colorado. Shows parked automobile, gabled buildings, dredge facilities, wooden sheds and water.
    • Park County (Colo.)--1930-1950.; Gold dredging--Colorado--Park County--1930-1950.; Hoisting machinery--Colorado--Park County--1930-1950.; Hydraulic mining--Colorado--Park County--1930-1950.
    • [between 1935 and 1945?]
    • Cooley Bros. Dredge, Gen. view

    • View of a dragline crane, a dredge, gabled buildings and mountains on probably Beaver Creek in Park County, Colorado.
    • Park County (Colo.)--1930-1950.; Dredges--Colorado--Park County--1930-1950.; Gold dredging--Colorado--Park County--1930-1950.; Hoisting machinery--Colorado--Park County--1930-1950.; Hydraulic mining--Colorado--Park County--1930-1950.
    • [between 1935 and 1950?]
    • Cooley Bros. Dredge, Gen. view

    • View of a dragline crane, a dredge and a shovel, possibly on Beaver Creek in Park County, Colorado. The crane reads: "Cooley Brothers" and "Bucyrus Monighan."
    • Park County (Colo.)--1930-1950.; Dredges--Colorado--Park County--1930-1950.; Gold dredging--Colorado--Park County--1930-1950.; Hoisting machinery--Colorado--Park County--1930-1950.; Hydraulic mining--Colorado--Park County--1930-1950.
    • [between 1935 and 1945?]

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