| Author: | Adams, William W. |
|---|---|
| Additional Authors: | Gerry, L. S. |
| Year: | 1931 |
| Document Type: | USBM |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
| SUDOC: | C 22.5:509 |
| Series: | Technical paper / Dept. of the Interior, Bureau of Mines ; |
| Report Number: | 509 |
| Subjects: | Explosives |
| Coal mine accidents | |
| Links: | https://hdl.handle.net/2027/mdp.39015077559139 |
| https://hdl.handle.net/2027/mdp.39015086470948 |