| Author: | Egan, Margaret R. | 
|---|---|
| Year: | 1986 | 
| Document Type: | USBI | 
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, | 
| SUDOC: | I 28.27:9117 | 
| Series: | Information circular / Bureau of Mines ; | 
| Report Number: | 9117 | 
| Subjects: | Mine ventilation | 
| Mine fires | |
| Electric transformers | |
| Link: | https://hdl.handle.net/2027/mdp.39015078464800 |