| Year: | 1975 |
|---|---|
| Document Type: | USBI |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
| SUDOC: | I 28.27:8694 |
| Series: | Information circular - Bureau of Mines ; |
| Report Number: | 8694 |
| Subjects: | Electricity in mining |
| Coal mines and mining--Electric equipment | |
| Electric power distribution | |
| Link: | https://hdl.handle.net/2027/mdp.39015078462960 |