Results 311 - 320 of 328

• Reducing Respirable Dust Concentrations at Mineral Processing Facilities Using Total Mill Ventilation Systems
  1/1/1993 - Reports of Investigations
  The design and evaluation of two total mill ventilation systems are described. Both systems proved to be very effective at reducing respirable dust levels in a cost-effective manner, were easy to install, and required minimal maintenance.
• Apparatus for Measuring Diesel Tailpipe Emissions in Underground Mines
  4/1/1992 - Reports of Investigations
  A collaboration between the U.S. Bureau of Mines and Michigan Technological University to develop an apparatus for measuring diesel tailpipe emissions in underground mines.
• Dust Considerations When Using Belt Entry Air to Ventilate Work Areas
  1/1/1992 - Reports of Investigations
  Dust surveys were conducted to determine factors affecting belt entry dust levels and how using belt air to ventilate work areas affected dust exposures.
• Effectiveness of Iron-Based Fuel Additives for Diesel Soot Control
  1/1/1992 - Reports of Investigations
  This report is mainly about a ferrocene-based additive that reduced DPM between 4 and 45 pct, depending on engine operating conditions.
• Relationship of Coal Seam Parameters and Airborne Respirable Dust at Longwalls
  1/1/1992 - Reports of Investigations
  The U.S. Bureau of Mines investigated the relationship of bituminous coal seam parameters and the amount of respirable dust generated at longwalls.
• Research Toward Direct Analysis of Quartz Dust on Filters Using FTIR Spectroscopy
  1/1/1992 - Information Circulars
  A U.S. Bureau of Mines investigation of Fourier transform infrared (FTIR) spectroscopy for on-filter analysis of respirable dust.
• 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...