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Search U.S. government technical reports digitized or harvested by TRAIL.
Keyword Search
9 results returnedMine pager to public telephone interconnect system
Electromagnetic noise in Robena No.4 Coal Mine
An electromagnetic system for detecting and locating trapped miners
Seismic detection of trapped miners using in-mine geophones
Underground mine communications(in four parts) :
Underground mine communications(in four parts) :
Published Year
Subject
- Mine communication systems (9) *
- Mine safety (3)
- Mines and mineral resources--United States (1)
- Mining engineering (1)
- Telephone in mining (1)
Author
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