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- Population groups:
- U.S. Bureau of Mines
- Document types:
- Contract reports
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Results 1 - 4 of 4
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12/1/1983 - Contract reports, Open File ReportsA new postdisaster communication and location system using through-the-earth electromagnetic wave propagation was tested at the Bureau of Mines Lake Lynn Experimental Mine. This describes the testing process and findings.
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4/1/1981 - Contract reportsThis report presents test results, data evaluations, and typical system performance expectations based on wireless electromagnetic propagation measurements performed in the MAGMA Copper Company San Manuel mine near Tucson, Arizona during March 30 throug...
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12/1/1973 - Conference proceedings, Contract reportsA need arose to assemble individuals who have been active in current research on the topic of electromagnetic communications systems so that the problem of how information may be conveyed by electromagnetic waves propagating through rock media without t...
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3/1/1972 - Contract reports, Open File ReportsThis report comprises three working memoranda that present preliminary performance estimates for baseband voice and narrowband through-the-earth electromagnetic communications systems of principal interest to the Bureau of Mines for operational/emergenc...
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Content source: National Institute for Occupational Safety and Health, Mining Program