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Comparison of methods of gold recovery from black sand
| Author: | Gross, John, |
|---|---|
| Year: | 1920 |
| Document Type: | BMRA |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
| Series: | Report of investigations / United States Department of the Interior, Bureau of Mines ; |
| Report Number: | 2192 |
| Subject: | Gold mines and mining |
| Link: | https://hdl.handle.net/2027/mdp.39015086499590 |
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