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  • All fields: Mine buildings--Colorado--De Beque--1920-1930.
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    • De Beque, Colorado

    • View of a frame mine building used in oil shale processing in or near De Beque (Mesa County), Colorado. Shows a tailings pile, an oil-stained ravine, a smokestack, and flumes or chutes on a steep slope.
    • Oil-shale industry--Colorado--De Beque--1920-1930.; De Beque (Colo.)--1920-1930.; Mine buildings--Colorado--De Beque--1920-1930.; Mining--Colorado--De Beque--1920-1930.
    • 1920 October
    • The Plant of the Monarch Shale Oil Company using the "Ginet eduction process" De Beque,...

    • View of the Monarch Shale Oil Company mine on a mesa in De Beque (Mesa County), Colorado. Shows the mine entrance and crusher site near layered shale at the top of the formation, a shale conveyor, a crushed shale bin, a retort, a stairway, storage...
    • Monarch Shale Oil Company--1920-1930.; Oil-shale industry--Colorado--De Beque--1920-1930.; De Beque (Colo.)--1920-1930.; Mine buildings--Colorado--De Beque--1920-1930.; Mining--Colorado--De Beque--1920-1930.; Refineries--Colorado--De...
    • [1920 August]

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