View of a Continental Oil Shale Mining and Refining Company plant on a hillside near layered shale cliffs in Rio Blanco County, Colorado. Shows a brick retort with timber scaffolding and ladders and a sign that reads: "The Colorado Continuous...
Oil-shale industry--Colorado--Rio Blanco County--1900-1920.; Oil-shales--Colorado--Rio Blanco County--1900-1920.; Rio Blanco County (Colo.)--1900-1920.; Cliffs--Colorado--Rio Blanco County--1900-1920.; Refineries--Colorado--Rio Blanco...
View of the North London Mine and boardinghouse near Park City (Park County), Colorado. Snow covers the ground.
North London Mine (Park County, Colo.)--1880-1900.; Park City (Colo.)--1880-1900.; Lodging houses--Colorado--Park City--1880-1900.; Mining--Colorado--Park City--1880-1900.
[between 1940 and 1960]
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