| Author: | Sayers, R. R. |
|---|---|
| Year: | 1930 |
| Document Type: | USBI |
| Issuing Agency: | U.S. Dept. of Commerce, Bureau of Mines, |
| SUDOC: | C 22.11:6367 |
| Series: | Information circular / United States Department of Commerce, Bureau of Mines ; |
| Report Number: | 6367 |
| Subjects: | Industrial accidents |
| Mines and mineral resources--Safety measures | |
| Mine safety | |
| Link: | https://hdl.handle.net/2027/mdp.39015077576190 |