Results 21 - 30 of 121

• Computational Fluid Dynamics Modeling of Spontaneous Heating in Longwall Gob Areas
  12/1/2007 - Peer reviewed journal articles
  Computational Fluid Dynamics simulations were conducted to investigate the spontaneous heating of coals in longwall gob areas with different apparent activation energies and reaction surface areas. The results are reported in this paper.
• Preventing Equipment Related Injuries in Underground U.S. Coal Mines
  10/1/2007 - Peer reviewed journal articles
  The top five priority hazards associated with underground coal mining equipment have been identified and information about potential contributing factors and controls collated.
• Programmable Electronic and Hardwired Emergency Shutdown Systems: A Quantified Safety Analysis
  7/1/2007 - Peer reviewed journal articles
  This paper describes an analytical study to quantify the safety integrity of a Programmable Logic Controller based Emergency Shutdown System and a hardwired Emergency Shutdown System.
• Threshold Powers and Delays for Igniting Propane and Butane-Air Mixtures by CW Laser-heated Small Particles
  11/1/2006 - Peer reviewed journal articles
  NIOSH researchers studied laser safety in potentially flammable environments. Researchers measured threshold igniting powers as a function of beam diameter for butane and propane-air mixtures by laser-heating targets placed on optical fiber tips.
• Knowledge Management and Transfer for Mine Emergency Response
  9/1/2006 - Peer reviewed journal articles
  US coal mining organizations are losing the knowledge they need to be able to respond to emergencies. Knowledge management provides a useful perspective from which to view the problem. Knowledge can be managed by cultivating it through narratives.
• Methane-Air Mixtures Ignited by CW Laser-Heated Targets on Optical Fiber Tips: Comparison of Targets, Optical Fibers, and Ignition Delays
  9/1/2006 - Peer reviewed journal articles
  Researchers conducted experiments to estimate the mean and standard deviation of laser powers needed to ignite 6% methane-air atmospheres using single-mode optical fiber tips covered by two types of iron oxide mixed with a ceramic adhesive.
• Fatal Accidents Due to Flyrock and Lack of Blast Area Security and Working Practices in Mining
  11/1/2003 - Peer reviewed journal articles
  This paper describes six representative fatalities due to flyrock and lack of blast area security in coal and nonmetal mines. Several mines were visited to collect information relative to working practices aimed at mitigating blasting hazards.
• Electrical Accidents in the Mining Industry, 1990-1999
  11/1/2003 - Peer reviewed journal articles
  This NIOSH study was conducted to focus future research on the most significant electrical problems in the mining industry. Data from 1,926 mine electrical accidents (including 75 fatalities) that occurred between 1990 and 1999 were studied.
• Continuous Wave Laser Ignition Thresholds of Coal Dust Clouds
  8/1/2003 - Peer reviewed journal articles
  Laser-based instruments are used in areas where coal dust ignition presents a safety hazard. This NIOSH study determines when an optical beam may be considered a potential ignition source in underground coal mines or coal storage facilities.
• Ignition of Methane-Air Mixtures by Laser Heated Small Particles
  5/1/2000 - Peer reviewed journal articles
  Optical technologies have progressed rapidly in the past 15 years. NIOSH is conducting a study to help provide a scientific basis for developing appropriate safety guidelines for optical equipment in underground coal mines.