| Author: | Harrington, D. | 
|---|---|
| Additional Authors: | East, J. H., | 
| Year: | 1953 | 
| Document Type: | USBI | 
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, | 
| SUDOC: | I 28.27:7674 | 
| Series: | Information circular / United States. Bureau of Mines ; | 
| Report Number: | 7674 | 
| Subjects: | Mines and mineral resources | 
| Explosives--Safety measures | |
| Link: | https://hdl.handle.net/2027/mdp.39015078460303 |