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Exploration of the El Dorado copper mine, El Dorado County, Calif.

Survey of Tin in California

Investigation of the Hogan tin mine Kern County, Calif.

Published Year

• 1940-1949 (3) *

Subject

• Copper mines and mining--California--El Dorado County (1)
• Tin deposits -- California. (1)
• Tin mines and mining -- California. (1)
• Tin mines and mining--California--Kern County (1)

Author

• Bedford, Robert H. (3) *
• Ricker, Spangler. (1)

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