Results 261 - 270 of 272

• Rapid (Grab) Sampling During Full-scale Explosions - Microscopic and Analytical Evaluation
  1/1/1988 - Reports of Investigations
  The Bureau of Mines has developed a system using a high-speed electropneumatic mechanism for the rapid (grab) sampling of dusts and gases during an explosion to monitor pyrolysis-charring in coal particles and combustion of pyrolysis vapors.
• Triboelectric Effects on Polyethylene Methane Drainage Pipelines
  1/1/1986 - Reports of Investigations
  The Bureau of Mines performed laboratory experiments to evaluate the triboelectric effect of particulate-laden gas streams on polyethylene pipe at various velocity, humidity, dust-size, and dust-load conditions.
• Impact of Background Sources on Dust Exposure of Bag Machine Operator
  1/1/1986 - Information Circulars
  The Bureau of Mines has recorded a number of different background dust sources that significantly contaminate the air breathed by bag machine operators. To keep bag operator exposure within acceptable dust levels established by the Mine Safety and Healt...
• Water Infusion - An Effective and Economical Longwall Dust Control
  1/1/1983 - Reports of Investigations
  In Europe, water infusion is used widely to reduce generation of respirable dust during mining. Its use in the United States is limited to a few plow operations in the Pocahontas No. 3 Coalbed. This Bureau of Mines report describes the technology for in...
• Methane and Dust Controls for Longwalls: Pocahontas No. 3 Coalbed, Grundy, Va.
  1/1/1974 - Reports of Investigations
  The periphery of longwall panels in the Pocahontas No. 3 Coalbed is characterized by a zone of reduced permeability that inhibits the natural drainage of methane. However, natural drainage holes drilled during development have been found to reduce the g...
• Methane and Dust Control by Water Infusion: Pittsburgh Coalbed (Fairview, W. Va.)
  1/1/1972 - Reports of Investigations
  The effect of water infusion on the flow of methane and on the production of dust was investigated at an active face in the Pittsburgh coalbed. The average total flow of methane at the face decreased by approximately 79 percent, whereas the flow from th...
• First Series of Coal-Dust Explosion Tests in the Experimental Mine
  4/1/1913 - NIOSH/USBM numbered publications
  A USBM report that presents the results of the first series of coal dust tests conducted in the experimental mine, along with a description of the experimental mine and its establishment.
• Dust Control Handbook for Industrial Minerals Mining and Processing
  1/1/2012 - Guides and manuals, Reports of Investigations
  Mined ore undergoes crushing, grinding, cleaning, drying, and product sizing as it is processed, generating harmful dust. This handbook reviews technologies for lowering dust levels below the permissible or recommended occupational exposure limits.
• Best Practices for Dust Control in Metal/Nonmetal Mining
  5/1/2010 - Information Circulars, Safety guidelines, tips, and checklists
  This handbook was developed to identify available engineering controls that can assist underground and surface metal/nonmetal mining operations in reducing worker exposure to respirable silica dust.
• Best Practices for Dust Control in Coal Mining
  1/1/2010 - Information Circulars, Safety guidelines, tips, and checklists
  This handbook was developed to identify available engineering controls that can help the industry reduce worker exposure to respirable coal and silica dust.