Report of Investigations 7768: Gases Desorbed from Five Coals of Low Gas Content

Details

• Journal Article:
  Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 7768
• Personal Author:
  Kim, Ann G. ; Douglas, Louise J.
• Description:
  Methane and other hydrocarbon gases, byproducts of coalification, are emitted from coal at widely varying rates and often present ventilation problems during mining. The air in some coal mines apparently contains no methane. To determine if coals from mines which had no history of detectable gas emission contained adsorbed methane, samples of coal at the shaft bottom and at an active face were obtained and placed in sealed metal cylinders. The atmosphere around the coal was sampled and analyzed by gas chromatography. Methane, ethane, ethylene, propane, propylene, and butane were found to have been desorbed from these coals. Hydrogen and helium were also detected. An estimate of the amount of residual gas per ton of coal indicated that coal samples from the active face generally contained more adsorbed gas than coal samples obtained from the shaft bottom, although in both instances the total amount of gas was relatively small. Description provided by NIOSH
• Subjects:
  • Coal
  • Coal Mining
  • Engineering
  • Explosions
  • 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, RI 7768, 1973 Jan; :1-9
• Series:
  Mining Publications ; NIOSH Numbered Publications
• Subseries:
  Report of Investigations
• Document Type:
  Text
• Genre:
  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:
  13 pdf pages
• NIOSHTIC Number:
  nn:10000606
• NTIS Accession Number:
  PB-221575
• CAS Registry Number:
  • Ethane (CAS RN 74-84-0)
  • Ethylene (CAS RN 74-85-1)
  • Methane (CAS RN 74-82-8)
  • Propane (CAS RN 74-98-6)
• Federal Fiscal Year:
  1973
• Peer Reviewed:
  False
• Download URL:
  https://stacks.cdc.gov/view/cdc/9221/cdc_9221_DS1.pdf
• File Type:
  [PDF - 503.06 KB]
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:0d365afaeb9cbade1495c4e7e5e49c71d4e30561c411274911cfbdbce6feb326b51d86f741b7a679ff6faaa8d01d379574e24fe9ddd2929cda7ab9ba136360b3