| Author: | Tomlinson, W. H. |
|---|---|
| Year: | 1944 |
| Document Type: | USBI |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
| SUDOC: | I 28.27:7271 |
| Series: | Information circular / United States Department of the Interior, Bureau of Mines ; |
| Report Number: | 7271 |
| Subjects: | Mine safety--Equipment and supplies |
| Safety lamps | |
| Link: | https://hdl.handle.net/2027/mdp.39015077570649 |