Theory and experiments relating to electromagnetic fields of buried sources with consequences to communication and location
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Theory and experiments relating to electromagnetic fields of buried sources with consequences to communication and location

Filetype[PDF-370.87 KB]


Details:
  • Personal Author:
    Geyer, Richard G.
  • Conference Authors:
    Thru-the-Earth-Electromagnetics Workshop (1973 : Colorado School of Mines)
  • Description:
    One aspect of a program to improve the chances of survival following coal mine disasters is the development of a communications system which will allow surviving miners to make their circumstances known to rescue teams. Various communications techniques can be considered, including electromagnetic systems, acoustic systems, and hybrid systems. The electromagnetic and acoustic systems would be independent of existing mine communications systems and set up specifically for use in emergencies. Hybrid systems might use a short emergency link to existing telephone systems in the mine. Many variations are technically possible, and the primary task is in evaluating the relative merits of each, so that the most workable system can be selected.
  • Document Type:
    Book Chapter
  • Genre:
    Conference Publications
  • Collection(s):
    National Institute for Occupational Safety and Health
  • Main Document Checksum:
  • File Type:
  • Supporting Files:
    No Additional Files
    1. Filetype[PDF - 123.86 KB]
      Personal Author:
      Rankin, David
      Conference Authors:
      Thru-the-Earth-Electromagnetics Workshop (1973 : Colorado School of Mines)
      Published Date:
      1973
      Source:
      Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines, p. 92-94
      Series:
      Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines
      Description:
      Three -dimensional boundary value problems are difficult to solve. Indeed, while the separation of the scalar wave equation can be effected in 11 diff...
      File Type:
      Filetype[PDF - 123.86 KB]
      File Type:
      Filetype[PDF - 123.86 KB]
    2. Filetype[PDF - 143.65 KB]
      Personal Author:
      Jones, F. W.
      Conference Authors:
      Thru-the-Earth-Electromagnetics Workshop (1973 : Colorado School of Mines)
      Published Date:
      1973
      Source:
      Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines, p. 86-91
      Series:
      Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines
      Description:
      The perturbation of alternating electromagnetic fields by three-dimensional structures is considered. The general model is that of a semi-infinite con...
      File Type:
      Filetype[PDF - 143.65 KB]
      File Type:
      Filetype[PDF - 143.65 KB]
    3. Filetype[PDF - 1010.41 KB]
      Personal Author:
      Farstad, Arnold J.
      Conference Authors:
      Thru-the-Earth-Electromagnetics Workshop (1973 : Colorado School of Mines)
      Published Date:
      1973
      Source:
      Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines, p. 62-72
      Series:
      Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines
      Description:
      The use of radio signals for underground communications was considered as early as the mid-1920's [1] - [4] . However, early experiments did not produ...
      File Type:
      Filetype[PDF - 1010.41 KB]
      File Type:
      Filetype[PDF - 1010.41 KB]
    4. Filetype[PDF - 31.08 KB]
      Personal Author:
      Dolphin, Lambert ; Bollen, Robert ; ...
      Conference Authors:
      Thru-the-Earth-Electromagnetics Workshop (1973 : Colorado School of Mines)
      Published Date:
      1973
      Source:
      Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines, p. 168
      Series:
      Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines
      Description:
      An electromagnetic sounder developed for an archaeological application in Egypt has been successfully tested in a California dolomite mine. Chambers i...
      File Type:
      Filetype[PDF - 31.08 KB]
      File Type:
      Filetype[PDF - 31.08 KB]
    5. Filetype[PDF - 326.47 KB]
      Personal Author:
      Fontaine, J. ; Demoulin, B. ; ...
      Conference Authors:
      Thru-the-Earth-Electromagnetics Workshop (1973 : Colorado School of Mines)
      Published Date:
      1973
      Source:
      Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines, p. 130-139
      Series:
      Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines
      Description:
      To realize a radiowave communication along mine galleries a few kilometers long without repeater, we show that it is possible to use a coaxial cable b...
      File Type:
      Filetype[PDF - 326.47 KB]
      File Type:
      Filetype[PDF - 326.47 KB]
    6. Filetype[PDF - 502.00 KB]
      Personal Author:
      Parkinson, Howard E.
      Conference Authors:
      Thru-the-Earth-Electromagnetics Workshop (1973 : Colorado School of Mines)
      Published Date:
      1973
      Source:
      Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines, p. 1-8
      Series:
      Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines
      Description:
      In 1969, new coal mine health and safety legislation was enacted in the United States. As a result of this legislation, the Department of Interior, Bu...
      File Type:
      Filetype[PDF - 502.00 KB]
      File Type:
      Filetype[PDF - 502.00 KB]
    7. Filetype[PDF - 232.46 KB]
      Personal Author:
      Wait, James R.
      Conference Authors:
      Thru-the-Earth-Electromagnetics Workshop (1973 : Colorado School of Mines)
      Published Date:
      1973
      Source:
      Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines, p. 9-14
      Series:
      Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines
      Description:
      It is the purpose of this paper to review theoretical model concepts in through- the -earth transmission of electromagnetic waves. While the subject i...
      File Type:
      Filetype[PDF - 232.46 KB]
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      Filetype[PDF - 232.46 KB]
    8. Filetype[PDF - 37.61 KB]
      Personal Author:
      Adams, John W.
      Conference Authors:
      Thru-the-Earth-Electromagnetics Workshop (1973 : Colorado School of Mines)
      Published Date:
      1973
      Source:
      Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines, p. 169
      Series:
      Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines
      Description:
      The present status of the National Bureau of Standards program is that many magnetic tapes of analog data have been recorded in four major mines. Each...
      File Type:
      Filetype[PDF - 37.61 KB]
      File Type:
      Filetype[PDF - 37.61 KB]
    9. Filetype[PDF - 739.67 KB]
      Personal Author:
      Gabillard, R. ; Dubus, J. P. ; ...
      Conference Authors:
      Thru-the-Earth-Electromagnetics Workshop (1973 : Colorado School of Mines)
      Published Date:
      1973
      Source:
      Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines, p. 121-129
      Series:
      Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines
      Description:
      We present an electromagnetic method taken from the well known radiogoniometer that allows us to locate at the surface of the ground the vertical axis...
      File Type:
      Filetype[PDF - 739.67 KB]
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      Filetype[PDF - 739.67 KB]
    10. Filetype[PDF - 500.48 KB]
      Personal Author:
      Emslie, Alfred G. ; Lagace, Robert L. ; ...
      Conference Authors:
      Thru-the-Earth-Electromagnetics Workshop (1973 : Colorado School of Mines)
      Published Date:
      1973
      Source:
      Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines, p. 38-48
      Series:
      Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines
      Description:
      This paper is concerned with the theoretical study of UHF radio communication in coal mines, with particular reference to the rate of loss of signal s...
      File Type:
      Filetype[PDF - 500.48 KB]
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      Filetype[PDF - 500.48 KB]
    11. Filetype[PDF - 640.36 KB]
      Personal Author:
      Roetter, Martyn F.
      Conference Authors:
      Thru-the-Earth-Electromagnetics Workshop (1973 : Colorado School of Mines)
      Published Date:
      1973
      Source:
      Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines, p. 202-217
      Series:
      Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines
      File Type:
      Filetype[PDF - 640.36 KB]
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      Filetype[PDF - 640.36 KB]
    12. Filetype[PDF - 193.64 KB]
      Personal Author:
      Delogne, P. ; Deryck, L. ; ...
      Conference Authors:
      Thru-the-Earth-Electromagnetics Workshop (1973 : Colorado School of Mines)
      Published Date:
      1973
      Source:
      Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines, p. 48-53
      Series:
      Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines
      Description:
      So far as the propagation of electromagnetic waves is concerned, an underground tunnel behaves like a pipe or hollowed waveguide. Waves propagate in t...
      File Type:
      Filetype[PDF - 193.64 KB]
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      Filetype[PDF - 193.64 KB]
    13. Filetype[PDF - 522.62 KB]
      Personal Author:
      Lewis, Richard L.
      Conference Authors:
      Thru-the-Earth-Electromagnetics Workshop (1973 : Colorado School of Mines)
      Published Date:
      1973
      Source:
      Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines, p. 98-103
      Series:
      Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines
      Description:
      This is a discussion of the application of the zonal harmonic series to problems involving dipole sources in the vicinity of spherical boundaries. The...
      File Type:
      Filetype[PDF - 522.62 KB]
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      Filetype[PDF - 522.62 KB]
    14. Filetype[PDF - 27.45 KB]
      Personal Author:
      Franceschetti, Giorgio
      Conference Authors:
      Thru-the-Earth-Electromagnetics Workshop (1973 : Colorado School of Mines)
      Published Date:
      1973
      Source:
      Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines, p. 162-167
      Series:
      Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines
      Description:
      Explicit expressions are presented for the input admittance and effective height of several buried metal antennas, namely: (i) prolate spheroidal; (ii...
      File Type:
      Filetype[PDF - 27.45 KB]
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      Filetype[PDF - 27.45 KB]
    15. Filetype[PDF - 273.87 KB]
      Personal Author:
      Starkey, D. B.
      Conference Authors:
      Thru-the-Earth-Electromagnetics Workshop (1973 : Colorado School of Mines)
      Published Date:
      1973
      Source:
      Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines, p. 140-148
      Series:
      Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines
      Description:
      nvestigation into the expressions of the field produced by a loop over a conducting half space or in an infinite conducting half space are well docume...
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      Filetype[PDF - 273.87 KB]
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      Filetype[PDF - 273.87 KB]
    16. Filetype[PDF - 249.63 KB]
      Personal Author:
      Bannister, Peter R. ; Williams, Frederick J. ; ...
      Conference Authors:
      Thru-the-Earth-Electromagnetics Workshop (1973 : Colorado School of Mines)
      Published Date:
      1973
      Source:
      Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines, p. 162-167
      Series:
      Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines
      Description:
      During the last week in March and the first week in April, 1973, the Naval Underwater Systems Center measured the 76 Hz magnetic field strength (in Wi...
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      Filetype[PDF - 249.63 KB]
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      Filetype[PDF - 249.63 KB]
    17. Filetype[PDF - 346.24 KB]
      Personal Author:
      Goddard, Arthur E.
      Conference Authors:
      Thru-the-Earth-Electromagnetics Workshop (1973 : Colorado School of Mines)
      Published Date:
      1973
      Source:
      Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines, p. 54-61
      Series:
      Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines
      Description:
      Radio propagation measurements were conducted in a coal mine at UHF (200 to 1000 MHz) and VLF (1 to 50 kHz) to characterize the transmission loss of i...
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      Filetype[PDF - 346.24 KB]
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      Filetype[PDF - 346.24 KB]
    18. Filetype[PDF - 288.74 KB]
      Personal Author:
      Farstad, Arnold J.
      Conference Authors:
      Thru-the-Earth-Electromagnetics Workshop (1973 : Colorado School of Mines)
      Published Date:
      1973
      Source:
      Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines, p. 171-177
      Series:
      Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines
      Description:
      The Location Group conversed in the Petroleum Room of the Green Center with the purpose of addressing the following list of topics in light of the Bur...
      File Type:
      Filetype[PDF - 288.74 KB]
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      Filetype[PDF - 288.74 KB]
    19. Filetype[PDF - 186.51 KB]
      Personal Author:
      Hill, D. A. ; Wait, J. R. ;
      Conference Authors:
      Thru-the-Earth-Electromagnetics Workshop (1973 : Colorado School of Mines)
      Published Date:
      1973
      Source:
      Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines, p. 81-85
      Series:
      Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines
      Description:
      The feasibility of locating a buried vertical magnetic dipole source (horizontal loop) from surface measurements of the vertical and horizontal magnet...
      File Type:
      Filetype[PDF - 186.51 KB]
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      Filetype[PDF - 186.51 KB]
    20. Filetype[PDF - 354.63 KB]
      Personal Author:
      Moffatt, David L.
      Conference Authors:
      Thru-the-Earth-Electromagnetics Workshop (1973 : Colorado School of Mines)
      Published Date:
      1973
      Source:
      Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines, p. 112-120
      Series:
      Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines
      Description:
      Considerable current interest is evident[l,2] in the use of transient electromagnetic methods for subsurface remote sensing. A transient method is dis...
      File Type:
      Filetype[PDF - 354.63 KB]
      File Type:
      Filetype[PDF - 354.63 KB]

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    Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines, p. 168
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    Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines
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    An electromagnetic sounder developed for an archaeological application in Egypt has been successfully tested in a California dolomite mine. Chambers i...
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  5. Filetype[PDF - 326.47 KB]
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