| Author: | Gleim, E. J. |
|---|---|
| Additional Authors: | Freeman, Howard Bassett, |
| Year: | 1932 |
| Document Type: | USBM |
| Issuing Agency: | U.S.Bureau of Mines, |
| SUDOC: | C 22.5:537 |
| Series: | Technical paper / United States. Bureau of Mines ; |
| Report Number: | 537. |
| Subjects: | Coal mines and mining--Safety measures |
| Electricity in mining | |
| Link: | https://hdl.handle.net/2027/mdp.39015077565631 |