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Comparative porphyry copper mining and processing costs - Alaska and Arizona.
| Author: | Bottge, Robert G. |
|---|---|
| Year: | 1974 |
| Document Type: | USBI |
| Issuing Agency: | U.S. Bureau of Mines |
| SUDOC: | I 28.27:8656 |
| Series: | United States. Bureau of Mines. Information circular |
| Report Number: | 8656 |
| Subjects: | Copper mines and mining--Arizona--Cost of operation |
| Copper mines and mining--Alaska--Cost of operation | |
| Link: | https://hdl.handle.net/2027/mdp.39015078463380 |
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