Results 131 - 140 of 205

• Experimental Mine and Laboratory Dust Explosion Research at NIOSH
  5/1/2000 - Peer reviewed journal articles
  Explosion characteristics such as the minimum explosible concentration and the rock dust inerting requirements were measured for various combustible dusts. The explosion resistance characteristics of seals was also evaluated.
• Implications of Recent NIOSH Tracer Gas Studies on Bleeder and Gob Gas Ventilation Design
  2/1/2000 - Conference papers
  A paper describing research at a Pittsburgh Coalbed longwall mine to evaluate and optimize bleeder ventilation and gob gas venthole longwall methane control systems.
• Prediction of Longwall Methane Emissions: An Evaluation of the Influence of Mining Practices on Gas Emissions and Methane Control Systems
  10/1/1999 - Reports of Investigations
  An analysis of the consequences of increasing longwall panel dimensions, particularly face width, in gassy coalbeds. Continuous longwall face emission monitoring studies were conducted at two adjacent mines operating in the Pocahontas No. 3 Coalbed, whe...
• Focus on Prevention: Conducting a Fire Risk Assessment
  10/1/1999 - NIOSH/USBM numbered publications, Training materials
  The first step to emergency preparedness is defining and analyzing hazards. Although all hazards should be addressed, resource limitations usually do not allow this to happen all at once.
• Characterization of Gas Flow in Longwall Gobs: Pittsburgh Coalbed, PA
  5/1/1999 - Conference papers
  Investigation of the geologic and mining factors influencing the migration of longwall gob gas with a goal to optimize methane drainage strategies to reduce the volume of gob gas that reaches the underground workplace.
• Innovative Strategies for Mine Fire Preparedness
  6/1/1998 - Conference papers
  There has been some improvement in overall mine fire preparedness. However, little data has been gathered on a site-by-site basis to determine what improvements might be made on a local level.
• Full-Scale Testing of the Float Dust Deposition Meter
  5/1/1998 - Reports of Investigations
  Full-scale testing and results are described for an automated system that continuously monitors the accumulation of coal dust in mine entries.
• Detection of Downed Trolley Lines Using Arc Signature Analysis
  5/1/1997 - Reports of Investigations
  The article discusses the applicability of computerized signal analysis techniques to identify fault currents existing on coal mine direct-current trolley systems
• Ignition Tests With a Fiber-Optic Powered Instrument
  9/1/1996 - Conference papers
  New types of industrial instruments use fiber-coupled laser energy to power remote sensors. The U.S. Bureau of Mines began an investigation of laser-powered fiber-optic instruments in explosive atmospheres in support of the standard-making process.
• Secondary Explosion Hazards During Blasting in Oil Shale and Sulfide Ore Mines
  11/1/1995 - Reports of Investigations
  Laboratory and field testing results are presented for reducing dust and/or gas ignitions associated with blasting operations in oil shale and sulfide ore mining applications.