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Permissible Explosives, Mining Equipment, and Apparatus Approved Prior to January 1, 1924
| Author: | Crawshaw, John Edward, 1880- |
|---|---|
| Additional Authors: | Ilsley, L. C., 1880-, Parker, Dorsey J. |
| Year: | 1924 |
| Document Type: | N/A |
| SUDOC: | I 28.7:364 |
| Series: | Technical paper (United States. Bureau of Mines) |
| Report Number: | Technical paper (United States. Bureau of Mines) - 364 |
| Subjects: | Coal mines and mining -- Safety measures. |
| Explosives. | |
| Link: | http://digital.library.unt.edu/ark:/67531/metadc100834/ |
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