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Safety practices in churn drilling at Morenci Branch, Phelps Dodge Corp, Morenci, Ariz.
| Author: | Sharp, Alan A. |
|---|---|
| Additional Authors: | Look, Allen D. |
| Year: | 1950 |
| Document Type: | USBI |
| Issuing Agency: | Dept. of the Interior, Bureau of Mines, |
| SUDOC: | I 28.27:7548 |
| Series: | Information circular / United States. Bureau of Mines ; |
| Report Number: | 7548 |
| Subjects: | Copper mines and mining--Arizona |
| Mine safety | |
| Link: | https://hdl.handle.net/2027/mdp.39015078463885 |
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