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  • All fields: Ore-dressing--Colorado--Golden--1910-1920.
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    • Ore dressing laboratory, Colo. School of Mines

    • Ore dressing laboratory, Colo. School of Mines

    • View of an ore dressing (processing) laboratory at Colorado School of Mines in Golden (Jefferson County), Colorado. The room has a work bench against one wall, a blackboard, and ore pulverizing machinery operated by pulleys and belts mounted on...

    • Colorado School of Mines--Facilities--1910-1920.; Ore-dressing--Colorado--Golden--1910-1920.; Golden (Colo.)--1910-1920.; Classrooms--Colorado--Golden--1910-1920.; Interiors--Colorado--Golden--1910-1920.; Laboratories--Colorado--Golden--1910-1920.;...

    • [between 1915 and 1920?]

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