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- Wireless node communications systems
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- Reports of Investigations
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1/1/1983 - Reports of InvestigationsAn essential element of the USBM electromagnetic location and communication system for trapped miners is knowledge of the surface and above-surface electromagnetic fields created by an underground transmitter.
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1/1/1982 - Reports of InvestigationsThe Bureau of Mines (NIOSH Mining) has conducted field studies in coal mines throughout the United States to determine the effectiveness of electromagnetic techniques in locating miners trapped underground following a mine accident.
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Content source: National Institute for Occupational Safety and Health, Mining Program