Report of Investigations 6710: Stoppings for Ventilating Coal Mines

Details

• Personal Author:
  Bercik, George R. ; Frances, Angelo ; Kawenski, Edward M. ; Mitchell, Donald W.
• Corporate Authors:
  United States. Bureau of Mines
• Description:
  Tests were made in the Bureau of Mines Experimental Coal Mine on stoppings similar to those used in operating coal mines to obtain information on air leakage through the face and the rupture strength of a stopping subjected to a pressure differential. Block stoppings were made from cinder, slag, and gravel aggregates with and without mortared joints and coatings. Sheet stoppings were uncoated brattice cloth and nylon or brattice cloth and expanded metal-lath coated with asphalt, latex, mortar, or rigid urethane foam. Limited data were obtained on air leakage through stoppings subjected to simulated roof convergence and to shock forces created by the firing of an adjacent charge of explosive. The pressure differential required to rupture stoppings was determined. The research shows that coating the face of a stopping effectively reduces air leakage. Block stoppings, particularly those with mortared joints, are most resistant to pressure and shock forces than are sheet stoppings. Where ground movement is a factor, sheet stoppings leak less air than block stoppings. [Description provided by NIOSH]
• Subjects:
  Coal Coal Mining Mining Occupational Health Safety Ventilation
• Keywords:
  Coal-mining Mine-shafts Mining-industry Underground-mining Ventilation-systems
• Series:
  Mining Publications
• Subseries:
  Report of Investigations
• ISSN:
  1066-5552 (print)
• Publisher:
  United States. Bureau of Mines
• Document Type:
  Text
• Genre:
  Case Report
• Place as Subject:
  OSHA Region 3 ; Pennsylvania
• Rights:
  Public Domain
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  24 pdf pages
• NIOSHTIC Number:
  nn:20036482
• Citation:
  Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 6710, 1965 Sep; :1-20
• Federal Fiscal Year:
  1965
• Peer Reviewed:
  False
• Source Full Name:
  Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 6710
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:f3f42e1a3a6db82bd420c42d06b72572df350ae056f0d61995b38193d30db63850007544868e0e89fdf07c99c4de2709b2f8141b862f20e3b2c8d5d86705488a
• Download URL:
  https://stacks.cdc.gov/view/cdc/202000/cdc_202000_DS1.pdf
• File Type:
  [PDF - 729.44 KB ]