Results 61 - 70 of 784

• Effectiveness of Selected Diesel Particulate Matter Control Technologies for Underground Mining Applications: Isolated Zone Study, 2003
  5/1/2006 - Reports of Investigations
  An underground metal mine study assessed the effects of diesel emissions control technologies (such as DPF systems, diesel oxidation catalytic converter, and biodiesel blends) on concentrations of diesel particulate matter and gases in mine air.
• Technology News 515 - Float Coal Dust Explosion Hazards
  4/1/2006 - Technology News
  This publication is intended to promote awareness of float coal dust explosion hazards in the mining industry and offers a float coal dust mitigation technique.
• Behavior of Nitrogen Oxides in the Product Gases from Explosive Detonations
  1/1/2006 - Conference papers
  Toxic fumes generated by explosives have been a concern for blasters, explosive manufacturers, and mining companies. In this study, 10 lb. charges of confined blasting agent were detonated in a closed chamber, and then detonation gases were analyzed.
• Field Studies of CO Migration from Blasting
  2/1/2005 - Conference papers
  Describes a small-scale field study to identify key factors that may contribute to the migration of CO through the ground.
• Evaluation of the SKC® DPM Cassette for Monitoring Diesel Particulate Matter in Coal Mines
  12/1/2004 - Peer reviewed journal articles
  A commercial version of the BOM impactor, called the DPM Cassette, was recently introduced by SKC®. Tests were conducted to evaluate the performance of the DPM Cassette for measuring diesel-source elemental carbon in the presence of coal dust.
• Computer Simulation of Ground Behaviour and Rock Bolt Interaction at Emerald Mine
  8/1/2004 - Conference papers
  This paper focuses on a computer simulation used to model roof behavior and rock bolt interaction in a collaborative study of ground behavior, reinforcement performance, and stress redistribution in a coal mine entry under severe horizontal stress.
• Performance of Roof Support Under High Stress in a U.S. Coal Mine
  2/1/2004 - Conference papers
  The primary goal of this project was to obtain detailed data on the interaction between the mine roof and the support elements for use in modeling studies. 
• 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.
• Analysis of Roof Bolt Systems
  8/1/2001 - Conference papers
  A statistical study of roof bolt performance was conducted in 37 U.S. mines. Analysis of the results led to guidelines for making preliminary estimates for bolt length, capacity, and pattern to improve roof stability in difficult conditions.
• Proceedings: New Technology for Coal Mine Roof Support
  10/1/2000 - Information Circulars
  The proceedings provide information on several new technologies including guidelines for roof bolt length, pattern, and capacity; a new design method for longwall tailgate supports; and a technique for measuring loads developed within cable bolts.