Results 361 - 370 of 618

• Whole-Body Vibration Exposure Comparison of Seat Designs for Low- and Mid-Seam Shuttle Cars in Underground Coal Mines
  1/1/2010 - Peer reviewed journal articles
  This study gathered data to support earlier NIOSH findings that specialized padded seats are improved designs for coal mine shuttle cars. Study results have potential application to vehicles used in surface mining, construction, and agriculture.
• Mutagenicity of Diesel Exhaust Particles from an Engine with Differing Exhaust After Treatments
  1/1/2010 - Peer reviewed journal articles
  This paper discusses the results of a study to investigate the effects of engine operating conditions and exhaust aftertreatments on the mutagenicity of diesel particulate matter (DPM) collected directly in an underground mine environment.
• Improved Drill Shroud Capture of Respirable Dust Utilizing Air Nozzles Underneath the Drill Deck
  1/1/2010 - Peer reviewed journal articles
  This study tests the ability of a new air nozzle system, located under the drill deck shroud, to improve the dust capture of the drill deck shroud.
• Pillar and Roof Span Design in Stone Mines
  1/1/2010 - Peer reviewed journal articles
  Underground stone mines in the United States use the room and pillar method of mining in relatively flat laying deposits. Roof and rib falls account for 15% of all lost time incidents. This paper presents the result of a study to improve pillar and roof...
• Ground Failures in Coal Mines with Weak Roof
  1/1/2010 - Peer reviewed journal articles
  An understanding of the geologic and stress conditions which lead to roof falls is necessary to assess the risk of failure and to design roof reinforcement to improve stability.
• Characteristics of the Top Five Most Frequent Injuries in United States Mining Operations, 2003-2007
  1/1/2010 - Peer reviewed journal articles
  This report describes an alternative method of analyzing and presenting MSHA data for the purpose of identifying high-cost, high-severity injuries and illnesses.
• Methods to Improve Efficiency of Mine Ventilation Systems
  1/1/2010 - Peer reviewed journal articles
  This paper discusses some ways to find extra usable air when there is no extra ventilation capacity.
• Regional Bumps: Case Studies from the 1958 Bump Symposium
  1/1/2010 - Peer reviewed journal articles
  This paper looks at historical descriptions of bumps with regional scale, in the hope that by investigating dynamic failure modes with potential to create the next disaster, that disaster might be averted.
• Effectiveness of Dust Dispersion in the 20-L Siwek Chamber
  1/1/2010 - Peer reviewed journal articles
  This research evaluated the quality of dust dispersion in the Siwek 20-L chamber using Pittsburgh coal, Gilsonite, and purple K dusts.
• Passive Mine Blast Attenuators Constructed of Rock Rubble for Protecting Ventilation Seals
  1/1/2010 - Peer reviewed journal articles
  This paper discusses some concepts and preliminary test results for a Passive Mine Blast Attenuator (PMBA) that can provide a useful alternative to increasingly larger and stronger stand-alone mine seals.