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An electromagnetic system for detecting and locating trapped miners
Seismic detection of trapped miners using in-mine geophones
A Short-range locator system for detecting trapped miners
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Published Year
1970-1979 (2)
1980-1989 (1)
Subject
Mine communication systems (3) *
Mine safety (2)
Mine rescue work--Equipment and supplies (1)
Radio--Transmitters and transmission (1)
Author
Powell, James A. (2)
Boyle, James R. (1)
Church, R. H. (1)
Pittman, Walter E. (1)
Watson, Richard A., (1)
Webb, William E. (1)
