| Author: | Herbert, Charles Arthur, |
|---|---|
| Year: | 1935 |
| Document Type: | USBI |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
| SUDOC: | I 28.27:6828 |
| Series: | Information circular / United States Department of the Interior, Bureau of Mines ; |
| Report Number: | 6828 |
| Subject: | Coal mine accidents--Indiana |
| Link: | https://hdl.handle.net/2027/mdp.39015077568866 |