Report of Investigations 9415: Cause of Floor Self-Heatings in an Underground Coal Mine

Details

• Journal Article:
  Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 9415
• Personal Author:
  Lazzara, Charles P. ; Miron, Yael ; Smith, Alex C.
• Description:
  This report presents a U.S. Bureau of Mines study to identify the causes of self-heating events beneath the floor of a deep underground mine. Mine samples from both heated and unheated areas were examined by various techniques, including visual, microscopic, thermal, chemical, and instrumental tests. The combined results led to the conclusion that pyrite (FeS2) oxidation was the prime cause of the heatings. However, adiabatic oven tests of selected samples did not indicate the effect of the pyrite on the self-heating process, probably because of the experimental conditions. A fast, simple procedure to assess concentration of pyrite in the mine samples was developed, utilizing the reactivity of the sample with an aqueous solution of hydrogen peroxide (H2O2). [Description provided by NIOSH]
• Subjects:
  Coal Coal Mining Hot Temperature Mining Occupational Health Safety
• Keywords:
  Mining-industry; Underground-mining; Iron-compounds
• Source:
  Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 9415, 1992 Jan; :1-24
• Series:
  NIOSH Numbered Publications   ; Mining 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:
  30 pdf pages
• NIOSHTIC Number:
  nn:10011376
• NTIS Accession Number:
  PB2003-103263
• Federal Fiscal Year:
  1992
• Peer Reviewed:
  False
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:5adae09c89861c20b10bab2edcfb23615d15f4306d9a71303030b451ec34029ee90c08d68d59f6203a5f2dbda7f43f88262f52b2dacc8e5bc87de65aec6d4fea
• Download URL:
  https://stacks.cdc.gov/view/cdc/10074/cdc_10074_DS1.pdf
• File Type:
  [PDF - 2.60 MB ]