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 |