Radio Propagation Measurements in Coal Mines at UHF and VLF

Details

• Personal Author:
  Goddard, Arthur E.
• 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 intra-mine paths. The basic experimental parameters included frequency, polarization, path orientation and distance. Further tests evaluated the performance of roof-bolt vs. loop antennas at VLF and parasitic reflectors at UHF. Measurement results are summarized in a series of transmission loss curves. Examples are presented to show the use of these curves in predicting the performance of radio communication systems in mines. [Description provided by NIOSH]
• Subjects:
  Coal Coal Mining Mining Occupational Health Radio Waves Safety
• Keywords:
  Coal-mining Mining-equipment Mining-industry Radio-waves Underground-mining
• Series:
  Mining Publications
• Document Type:
  Text
• Genre:
  Proceedings
• Place as Subject:
  Colorado ; District of Columbia ; Iowa ; OSHA Region 3 ; OSHA Region 7 ; OSHA Region 8
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  54-61
• NIOSHTIC Number:
  nn:20033482
• Citation:
  Proceedings of Thru-the-Earth Electromagnetics Workshop, August 15-17, 1973, Colorado School of Mines, Golden, Colorado. Geyer RG, ed., Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, Grant G0133023, 1973 Dec; :54-61
• Editor(s):
  Geyer RG
• Federal Fiscal Year:
  1974
• Performing Organization:
  Collins Radio Company
• Peer Reviewed:
  False
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:e962887872e00a841e58475e3c9c390609d007e431dbcd35f336894008d2f690fe48e58082a518cbd2719a6cbd6339e76a36ce1e12f0fc0d593be42460b80dc2
• Download URL:
  https://stacks.cdc.gov/view/cdc/226930/cdc_226930_DS1.pdf
• File Type:
  [PDF - 495.95 KB ]