Results 41 - 50 of 618

• Degasification System Selection for U.S. Longwall Mines Using an Expert Classification System
  3/1/2009 - Peer reviewed journal articles
  This study describes the development of an expert classification system used as a decision tool which can be used for degasification system selection using site- and mine-specific conditions.
• From Scotia to Brookwood, Fatal US Underground Coal Mine Explosions Ignited in Intake Air Courses
  1/1/2009 - Peer reviewed journal articles
  NIOSH researchers studied U.S. underground coal mine explosions over a 30-year period to identify the ignition sources and locations responsible for severe explosions resulting in death, and provided recommendations for safer electrical design.
• Monitoring and Removal of CO in Blasting Operations
  12/1/2008 - Peer reviewed journal articles
  This paper discusses methods of preventing CO migration, lessening migrated CO, and detecting CO in underground enclosed spaces and may help reduce exposure of area residents to CO and help prevent unnecessary regulations and blasting limitations.
• Ergonomic Interventions at Unimin
  12/1/2008 - Peer reviewed journal articles
  This paper discusses ergonomic interventions that were successfully implemented at the Unimin Gleason, Tennessee operation using a participatory approach to reducing the risk of injury.
• Pumpable Roof Supports: An Evolution in Longwall Roof Support Technology
  12/1/2008 - Peer reviewed journal articles
  This report examines the development of modern pumpable roof support technology and provides a full description of the performance capabilities of each of the support products now on the market.
• Numerical Study on Effects of Coal Properties on Spontaneous Heating in Longwall Gob Areas
  11/1/2008 - Peer reviewed journal articles
  A computational fluid dynamics (CFD) study was conducted to model effects of coal properties on the potential for spontaneous heating in longwall gob (mined-out) areas.
• Field Evaluation of the Coal Dust Explosibility Meter
  10/1/2008 - Peer reviewed journal articles
  This paper describes the testing and reliability of results of a NIOSH developed Coal Dust Explosibility Meter (CDEM), a hand-held instrument that uses optical reflectance to measure the explosibility of a rock dust and coal dust mixture.
• A Numerical Evaluation on the Effects of Impermeable Faults on Degasification Efficiency and Methane Emissions During Underground Coal Mining
  9/1/2008 - Peer reviewed journal articles
  This study uses reservoir simulations to illustrate the effects of impermeable faults on the production performance of vertical and horizontal degasification boreholes.
• Simulation of Spontaneous Heating in Longwall Gob Area with a Bleederless Ventilation System
  8/1/2008 - Peer reviewed journal articles
  To provide insights for the optimization of bleederless ventilation systems for U.S. underground coal mines, a computational fluid dynamics study was conducted to model spontaneous heating in longwall gob areas using a bleederless ventilation system.
• Trends in Electrical Injury in the U.S., 1992-2002
  7/1/2008 - Peer reviewed journal articles
  This paper updates an earlier report by the authors that studied electrical injuries from 1992 to 1998. The previous information is expanded and supplemented with fatal and nonfatal injury rates and trends through 2002.