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How to mine and prospect for placer gold
| Author: | West, John M. |
|---|---|
| Year: | 1971 |
| Document Type: | USBI |
| Issuing Agency: | U.S. Bureau of Mines, |
| SUDOC: | I 28.27:8517 |
| Series: | Information circular / Bureau of Mines ; |
| Report Number: | 8517 |
| Subjects: | Prospecting |
| Placer mining | |
| Gold mines and mining | |
| Link: | https://hdl.handle.net/2027/mdp.39015078456731 |
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