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Gold mining and milling methods and costs at the Vallecito Western Drift mine, Angels Camp, Calif.
| Author: | Steffa, Don. |
|---|---|
| Year: | 1932 |
| Document Type: | USBI |
| Issuing Agency: | U.S. Dept. of Commerce, U.S. Bureau of Mines, |
| SUDOC: | C 22.11:6612 |
| Series: | United States. Bureau of Mines. Information circular |
| Report Number: | 6612 |
| Subjects: | Gold--Milling |
| Gold mines and mining--California--Angels Camp | |
| Link: | https://hdl.handle.net/2027/mdp.39015086485433 |
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