Seismic detection of trapped miners using in-mine geophones

Author:	Powell, James A.
Additional Authors:	Watson, Richard A.,
Year:	1976
Document Type:	BMRA
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.23:8158
Series:	Report of investigations - Bureau of Mines ;
Report Number:	8158
Subjects:	Mine communication systems
	Mine safety
Link:	https://hdl.handle.net/2027/mdp.39015078474445