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Guarding trolley wires in mines
| Author: | Gleim, E. J. |
|---|---|
| Year: | 1945 |
| Document Type: | USBI |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
| SUDOC: | I 28.27:7332 |
| Series: | Information circular / United States Department of the Interior, Bureau of Mines ; |
| Report Number: | 7332 |
| Subjects: | Mine safety |
| Electricity in mining | |
| Link: | https://hdl.handle.net/2027/mdp.39015074127922 |
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