Electromagnetic propagation in low coal mines at medium frequencies

Details

• Personal Author:
  Cory, Terry S.
• Corporate Authors:
  United States. Bureau of Mines ; Rockwell International. Collins Communications Switching Systems Division ; United States. Bureau of Mines. Office of the Assistant Director--Mining
• Description:
  "This report covers magnetic field strength measurements versus range and frequency in low to medium coal mines. Both quasi-conductor- free and conductor-proximity areas were investigated. The program covered five mines, four seams, six measurement sets, and three geographic areas. The results are summarized in terms of maximum communication range expected per seam and noise condition. Scatter gain is further explored as a simple measure of energy coupled to conductors." - NIOSHTIC-2
  
  NIOSHTIC no. 10002377
  
  
• Subjects:
  Occupational Health Safety
• Series:
  Mining Publications
• Subseries:
  Open File Report
• Document Type:
  Text
• Funding:
  Bureau of Mines contract H0377053
• Genre:
  Report
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  94 numbered pages
• NIOSHTIC Number:
  nn:10002377
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:d41d1302b2b4a26ba98c8c586620dc92f31a883dc50e9357f379f59791cc377897a5736de653a61ac12ed251cfcdd28abb470d4b139eb28edf0e9817c0a5ebd0
• Download URL:
  https://stacks.cdc.gov/view/cdc/8891/cdc_8891_DS1.pdf
• File Type:
  [PDF - 2.47 MB ]