Close-up view of the brick smokestack and timber scaffolding of a Continental Oil Shale Mining Company retort in Rio Blanco County, Colorado. Shows pulleys or hoisting devices and ladders above a corrugated metal building.
Oil-shale industry--Colorado--Rio Blanco County--1900-1920.; Rio Blanco County (Colo.)--1900-1920.; Hoisting machinery--Colorado--Rio Blanco County--1900-1920.; Refineries--Colorado--Rio Blanco County--1900-1920.
[between 1900 and 1920?]
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