| Author: | Harrington, D. |
|---|---|
| Year: | 1939 |
| Document Type: | USBI |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
| Series: | Information circular / United States Department of the Interior, Bureau of Mines ; |
| Report Number: | 7070 |
| Subject: | Mine safety--Law and legislation--United States |
| Link: | https://hdl.handle.net/2027/mdp.39015077570441 |