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Through-the-earth electromagnetic trapped miner location systems. A review.

Authors
Pittman-WE Jr.; Church-RH; McLendon-JT
Source
Tuscaloosa, AL: U.S. Department of the Interior, Bureau of Mines, OFR 127-85, 1985 Jan; :1-57
NIOSHTIC No.
10004821
Abstract
In its role of providing technical assistance to the mining industry, the Bureau of Mines Tuscaloosa Research Center has conducted research to develop trapped miner location systems that would aid in locating miners trapped by underground mining disasters. Efforts to produce electromagnetic systems for the location of trapped miners underground and to communicate with them were surveyed, from the 1920's to 1981. Theoretical studies of through-the-earth electromagnetic transmissions are described as well as studies of the electrical characteristics of various rocks, minerals, and soil. Several trapped miner location systems are reviewed including the westinghouse systems, the develco system, and an automated three-dimensional location system, and the phase difference of arrival technique. Tangential research relevant to trapped miner location systems is described. A comprehensive bibliography covering all aspects of trapped miner, through-the- earth electromagnetic location, and communications systems is appended.
Publication Date
19850101
Document Type
CP
Fiscal Year
1985
NTIS Accession No.
NTIS Price
Identifying No.
OFR 127-85
NIOSH Division
TURC
Source Name
Tuscaloosa, AL: U.S. Department of the Interior, Bureau of Mines, OFR 127-85
State
AL
Performing Organization
BoM Tuscaloosa Research Center
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