| Author: | Adams, William W. | 
|---|---|
| Year: | 1927 | 
| Document Type: | USBM | 
| Issuing Agency: | U.S. Dept. of Commerce, Bureau of Mines : | 
| SUDOC: | C 22.5:426 | 
| Series: | Technical paper / United States Department of Commerce, Bureau of Mines ; | 
| Report Number: | 426 | 
| Subjects: | Explosives | 
| Coal mine accidents | |
| Link: | https://hdl.handle.net/2027/mdp.39015078543116 |