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  • All fields: Refineries--Colorado--De Beque--1920-1930.
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    • At the camp above plant of Index Oil Shale Co., De Beque, Colo.

    • At the camp above plant of Index Oil Shale Co., De Beque, Colo.

    • Men wear suits, ties, overcoats, and felt hats and stand beside trees outside the Index Oil Shale Company plant in De Beque (Mesa County), Colorado. Shows metal and frame buildings and tall smokestacks. A flag above a building reads "Index." Metal...

    • Index Oil Shale Company--1920-1930.; Oil-shale industry--Colorado--De Beque--1920-1930.; De Beque (Colo.)--1920-1930.; Mining--Colorado--De Beque--1920-1930.; Refineries--Colorado--De Beque--1920-1930.

    • [between 1920 and 1930?]
    • The Plant of the Monarch Shale Oil Company using the "Ginet eduction process" De Beque,...

    • The Plant of the Monarch Shale Oil Company using the "Ginet eduction process" De Beque, Colorado

    • 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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