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Search U.S. government technical reports digitized or harvested by TRAIL.
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15 results returnedSome signaling systems in metal-mine shafts
Some studies on emergency mine communications
Mine pager to public telephone interconnect system
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) :
Underground mine communications(in four parts) :
Underground mine communications(in four parts) :
Electromagnetic surface fields due to a magnetic dipole buried in a three-layered earth
Above-the-earth field contours for a dipole buried in a homgeneous half-space
Underground mine communications, control, and monitoring
A Short-range locator system for detecting trapped miners
A low-cost FSK modem network for polled communication systems
Published Year
Subject
- Mine communication systems (15) *
- Mine rescue work--Equipment and supplies (3)
- Mine safety (3)
- Electromagnetic fields (1)
- Electromagnetic waves--Transmission (1)
- Magnetic dipoles (1)
- Mine safety--Equipment and supplies (1)
- Mines and mineral resources--United States (1)
- Mining engineering (1)
- Modems (1)
- Radio in mining (1)
- Radio--Transmitters and transmission (1)
- Signals and signaling (1)
- Telephone in mining (1)
Author
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