Electromagnetic Location Systems for Metal/Non-Metal Mines

Details

• Journal Article:
  Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, OFR 115-82
• Personal Author:
  Farstad, Arnold J. ; Kehrman, R. F.
• Description:
  Characteristics of metal-nonmetal mines were evaluated to determine the suitability of applying the Bureau of Mines electromagnetic (em) location system to the problem of locating trapped miners. Statistical distributions of mine depths and overburden conductivities show that the existing Bureau em system is inadequate for most metal-nonmetal mines. Alternate approaches to trapped miner location in deep mines were identified, and subsequent field tests were conducted at six mines to evaluate their feasibility. The approach considered to be the most promising is one that uses the existing backpack transmitting system, modified slightly for a dual frequency output, in conjunction with a sophisticated signal processing receiver on the surface. The main advantage of staying with a "through-the-earth" approach is that the underground equipment can be kept simple, easily maintained, lightweight, and inexpensive. [Description provided by NIOSH]
• Subjects:
  Coal Coal Mining Engineering Explosions Metals Methane Mining Occupational Health Safety
• Keywords:
  Mine-gases; Mining-industry; Methanes; Methane-drainage; Methane-control; Explosive-gases; Explosive-atmospheres; Underground-mining; Coal-mining; Control-technology; Engineering-controls
• Source:
  Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, OFR 115-82, :1-119
• Series:
  Mining Publications
• Document Type:
  Text
• Genre:
  Final Contract Report
• Place as Subject:
  OSHA Region 3 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  PRC - Pittsburgh Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  119 pdf pages
• NIOSHTIC Number:
  nn:10002575
• NTIS Accession Number:
  PB82-254525
• CAS Registry Number:
  Methane (CAS RN 74-82-8)
• Federal Fiscal Year:
  1979
• Peer Reviewed:
  False
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:e4982b821961fc3a54e23846d63e43617561dfc4a0d04f51245035f6713b3f3c3a761bbea90a3a4af3e3e5a484790deacfd27fb6f679cd550704cbf463f18e17
• Download URL:
  https://stacks.cdc.gov/view/cdc/9038/cdc_9038_DS1.pdf
• File Type:
  [PDF - 5.75 MB ]