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?]
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