| Author: | Ambrose, Dean H. |
|---|---|
| Year: | 1985 |
| Document Type: | USBI |
| Issuing Agency: | United States Dept. of the Interior, |
| SUDOC: | I 28.27: 9050 |
| Series: | Information circular / Bureau of Mines ; |
| Report Number: | 9050 |
| Subjects: | Electricity in mining |
| Coal mines and mining--Electric equipment | |
| Link: | https://hdl.handle.net/2027/mdp.39015078459263 |