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Apparent earth conductivity over coal mines as estimated from through-the-earth electromagnetic transmission tests
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  1. Earth Conductivity Estimation from Through-the-Earth Measurements of 94 Coal Mines Using Different Electromagnetic Models
    Personal Author:
    Yan, Lincan; Waynert, Joseph; Sunderman, Carl;
    Published:
    Oct 2014
    Source:
    Appl Comput Electromagn Soc J. 2014; 29(10):755-762.
    Description:
    Through-the-Earth (TTE) communication systems require minimal infrastructure to operate. Hence, they are assumed to be more survivable and more conventional than other underground mine communications systems. This survivability is a major advantage f...
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  2. Through-the-earth electromagnetic trapped miner location systems : a review
    Personal Author:
    Pittman, Walter E., Jr.; Church, Ronald H.; McLendon, J. T.;
    Corporate Author:
    Tuscaloosa Research Center (United States. Bureau of Mines)
    Published:
    1985
    Series:
    Open file report (United States. Bureau of Mines) ; 1985-127
    Description:
    "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 which would aid in locating miners trapped by underground mining d...
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  3. Mathematical modeling and measurement of electric fields of electrode-based through-the-earth (TTE) communication
    Personal Author:
    Yan, Lincan; Zhou, Chenming; Reyes, Miguel; Whisner, Bruce; Damiano, Nicholas;
    Published:
    Jun 05 2017
    Source:
    Radio Sci. 52(6):731-742.
    Description:
    There are two types of through-the-earth (TTE) wireless communication in the mining industry: magnetic loop TTE and electrode-based (or linear) TTE. While the magnetic loop systems send signal through magnetic fields, the transmitter of an electrode-...
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  4. Preliminary performance predictions for electromagnetic through-the-earth mine communications : a collection of working memoranda : technical memorandum report
    Corporate Author:
    Arthur D. Little, Inc.; United States. Bureau of Mines. Pittsburgh Mining and Safety Research Center.;
    Published:
    March 1972
    Series:
    Open file report (United States. Bureau of Mines) ; 1973-16
    Description:
    "This 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/emer...
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  5. Theoretical noise and propogation models for through-the-earth communication
    Personal Author:
    Hill, D. A. (David A.); Wait, James R.;
    Corporate Author:
    United States. Bureau of Mines. Division of Minerals Health and Safety Technology.; United States. National Telecommunications and Information Administration.; Institute for Telecommunication Sciences.;
    Published:
    May 1982
    Series:
    Open file report (United States. Bureau of Mines) ; 1984-40
    Description:
    A survey of the literature on extremely low-frequency and very low-frequency atmospheric noise was made. Most measurements have concentrated on vertical electric field and the horizontal magnetic field rather than the vertical magnetic field, which i...
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