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Mining methods at the Eighty-five mine.Calumet and Arizona Mining Co., Valedon, N. Mex.
| Author: | Youtz, Ralph B. |
|---|---|
| Year: | 1931 |
| Document Type: | USBI |
| Issuing Agency: | Dept. of Commerce, U.S. Bureau of Mines, |
| SUDOC: | C 22.11:6413 |
| Series: | Information circular / Bureau of Mines ; |
| Report Number: | 6413 |
| Link: | https://hdl.handle.net/2027/mdp.39015077576026 |
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