A Method To Eliminate Explosion Hazards in Auger Highwall Mining [1993 Salt Lake City]

Details

• Journal Article:
  Proceedings of the 6th US mine ventilation symposium, June 21-23, 1993, Salt Lake City, Utah
• Description:
  The U. S. Bureau of Mines investigated a method of using inert gas to prevent the formation of explosive gas mixtures in auger highwall mining of coal. A combination of gasoline and diesel engine exhaust gases was introduced into the auger drill hole using a short section of pipe located at the collar. Gas samples were taken and analyzed on site with infrared detectors for oxygen, carbon dioxide, methane, and carbon monoxide. Evacuated bottle samples were also taken and analyzed by gas chromatography at the Pittsburgh Research Center. These gas results were analyzed for expIosibility. Personal exposure to carbon monoxide was also monitored. The highest methane level observed was 9.5 pct. The inert gas levels, (carbon dioxide and nitrogen) were sufficiently high to prevent any ignition of the methane. Results showed that for all conditions during mining, gas concentrations were non-explosive. The maximum personal time weighted average sample for carbon monoxide was 20 ppm. This system provides a safe, inexpensive, simple method for preventing explosions during auger mining. [Description provided by NIOSH]
• Subjects:
  Coal Coal Mining Emergencies Heat Stress Disorders Hot Temperature Humidity Mining Occupational Health Respiratory System Safety Temperature

  More +
• Keywords:
  Mining-industry; Underground-mining; Mine-gases; Gases; Explosion-prevention; Explosive-gases
• Source:
  Proceedings of the 6th US mine ventilation symposium, June 21-23, 1993, Salt Lake City, Utah. Bhaskar R, ed. Littleton, CO: Society for Mining, Metallurgy, and Exploration, 1993 Jun; :413-418
• ISBN:
  9780873351188
• Publisher:
  Society for Mining, Metallurgy, and Exploration
• Document Type:
  Text
• Genre:
  Proceedings
• 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
• NIOSHTIC Number:
  nn:10012164
• Editor(s):
  Bhaskar R
• Federal Fiscal Year:
  1993
• Peer Reviewed:
  False
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:7dc847c09aedf140bc731323e8446b4703641ae07d6ad9e7b7238120dab30b8f7dcaa9b938d34d035f87873a0fe7fec262d5d13dcaf290925445e82b6de3b57d
• Download URL:
  https://stacks.cdc.gov/view/cdc/161743/cdc_161743_DS1.pdf
• File Type:
  [PDF - 168.02 KB ]