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Prevention of premature shots during springing of deep drill holes in quarries and open-pit workings
| Author: | Harrington, D. |
|---|---|
| Year: | 1941 |
| Document Type: | USBI |
| Issuing Agency: | U.S. Dept of the Interior, Bureau of Mines, |
| SUDOC: | I 28.27:7191 |
| Series: | Information circular / Bureau of Mines ; |
| Report Number: | 7191. |
| Subjects: | Quarries and quarrying |
| Strip mining | |
| Link: | https://hdl.handle.net/2027/mdp.39015078535773 |
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