| Author: | Allsman, Paul T. |
|---|---|
| Year: | 1938 |
| Document Type: | USBI |
| Issuing Agency: | United States Dept. of the Interior, Bureau of Mines, |
| SUDOC: | I28.27:7029 |
| Series: | Information Circular / Bureau of Mines ; |
| Report Number: | 7029 |
| Subject: | Copper mines and mining--Nevada--Clark County--Cost of operation |
| Link: | https://hdl.handle.net/2027/mdp.39015077575861 |