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Arabian Peninsula
Water Resources Division, U.S. Geological Survey
1963, IMAP 270-B-2
No abstract available....
Economic geology of the Central City district, Gilpin County, Colorado
P.K. Sims, Avery A. Drake Jr., E. W. Tooker
1963, Professional Paper 359
The Central City district, in Gilpin County, Colo., is on the east flank of the Front Range, about 30 miles west of Denver. The district is the most important mining camp in the Front Range mineral belt, and has yielded more than $100 million worth of gold, silver, uranium, and...