Seismic detection of trapped miners using in-mine geophones
By: by James A. Powell and Richard A. Watson ; Pittsburgh Mining and Safety Research Center
Contributors: Watson, Richard A., jt. auth; United States. Bureau of Mines
Series: Report of investigations - Bureau of Mines ; 8158
Publisher: U.S. Dept. of the Interior, Bureau of Mines
Published: 1976
Place of publication: [Washington]
Language: eng
Subjects: Mine safety; Mine communication systems