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Green River Oil-Shale Reserves of Northwestern Colorado
Report issued by the U.S. Bureau of Mines on the oil-shale reserves near the Green River formation. Samples are analyzed for economic value, and presented in tables and illustrations. The report also includes maps of the sample areas.
Date:
February 1951
Creator:
Belser, Carl.
System:
The UNT Digital Library
Investigation of West Belt Copper-Zinc Mines, El Dorado, Amador, Calaveras, and Mariposa Counties, California
Report issued by the U.S. Bureau of Mines on the West Belt copper-zinc mines. The properties and characteristics of the mineral composition are presented. The report includes tables and maps.
Date:
February 1951
Creator:
Wiebelt, Frank J.; Sanborn, W. C.; Trengove, R. R. & Ricker, Spangler
System:
The UNT Digital Library