| Author: | Shope, S. M. |
|---|---|
| Year: | 1982 |
| Document Type: | BMRA |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
| SUDOC: | I 28.23:8702 |
| Series: | Report of investigations / United States. Bureau of Mines ; |
| Report Number: | 8702 |
| Subjects: | Mine communication systems |
| Mine rescue work--Equipment and supplies | |
| Electromagnetic waves--Transmission | |
| Link: | https://hdl.handle.net/2027/mdp.39015078490235 |