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  • All fields: Mining--Colorado--Boulder County--1910-1920.
(4 results)



Display: 50

    • Rocky Mountain Fuel Company mine

    • View of a "churn drill," used for mineral exploration as well as water well drilling, by a mine shaft in Boulder County, Colorado. A miners' camp is nearby.
    • Rocky Mountain Fuel Company--Facilities--1910-1920.; Boulder County (Colo.)--1910-1920.; Coal mining--Colorado--Boulder County--1910-1920.; Hoisting machinery--Colorado--Boulder County--1910-1920.; Mining--Colorado--Boulder County--1910-1920.
    • [between 1910 and 1920]
    • Interior shaft house, Alpine Horn Mill

    • Interior view of Alpine Horn Mine Shaft House, Boulder County Colorado, a frame structure with motors, electrical boxes and a hoist; "Signal Level" chart is on the wall.
    • Alpine Horn Mine (Boulder County, Colo.)--1910-1920.; Boulder County (Colo.)--1910-1920.; Hoisting machinery--Colorado--Boulder County--1910-1920.; Mining--Colorado--Boulder County--1910-1920.
    • [between 1910 and 1915]
    • Compressor & boiler house, part of dump, and peak south west of Fourth of July mine

    • View of the compressor and boiler house, a portion of the tailings pile, and Mount Neva at the Fourth of July mine, Boulder County, Colorado.
    • Mine buildings--Colorado--Boulder County--1910-1920.; Tailings embankments--Colorado--Boulder County--1910-1920.; Boulder County (Colo.)--1910-1920.; Fourth of July Mine (Boulder County, Colo.)--1910-1920.; Mining--Colorado--Boulder...
    • 1917 August 20
    • Interior Eureka-Tungston [sic] mill, Boulder, Colo.

    • Interior view of Eureka-Tungsten Mill, in Boulder County Colorado; man leans against wooden ore chute with one foot raised.
    • Eureka-Tungsten Mill (Colo.)--1910-1920.; Boulder County (Colo.)--1910-1920.; Mining--Colorado--Boulder County--1910-1920.; Ore industry--Colorado--Boulder County--1910-1920.
    • [between 1910 and 1915]

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