| Additional Authors: | Fay, Albert H. |
|---|---|
| Year: | 1919 |
| Document Type: | USBM |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
| SUDOC: | I 28.7:231 |
| Series: | Technical paper / United States Department of the Interior, Bureau of Mines ; |
| Report Number: | 231 |
| Subjects: | Coal mines and mining--Safety measures |
| Mine accidents | |
| Explosives | |
| Link: | https://hdl.handle.net/2027/mdp.39015086470849 |