| Author: | Howell, S. P. |
|---|---|
| Additional Authors: | Tiffany, J. E. |
| Year: | 1918 |
| Document Type: | USBM |
| Issuing Agency: | U.S.Bureau of Mines, |
| SUDOC: | I 28.7:186 |
| Series: | Technical paper / United States. Bureau of Mines ; |
| Report Number: | 186 |
| Subjects: | Coal mines and mining--Explosives |
| Explosives--Testing | |
| Link: | https://hdl.handle.net/2027/mdp.39015077565870 |