| Author: | Harrington, Daniel. |
|---|---|
| Year: | 1932 |
| Document Type: | USBI |
| Issuing Agency: | U.S. Dept. of Commerce, Bureau of Mines, |
| SUDOC: | C 22.11:6625 |
| Series: | Information circular / Bureau of Mines ; |
| Report Number: | 6625 |
| Subjects: | Mines and mineral resources--United States |
| Mine safety | |
| Accidents--United States--Prevention | |
| Link: | https://hdl.handle.net/2027/mdp.39015086485540 |