Results 41 - 50 of 66

• Technical Development of the Coal Dust Explosibility Meter
  1/1/2006 - Conference papers
  NIOSH's Office of Mine Safety and Health Research, in collaboration with MSHA Technical Support, has devised a prototype handheld device, Coal Dust Explosibitlity Meter (CDEM), to assess the potential explosibility of a coal and rock dust mixture.
• NIOSH Research in Coal Dust and Explosions
  10/1/2004 - Conference papers
  The NIOSH mining research program at the Pittsburgh Research Laboratory (PRL) includes the areas of coal mine dust control and monitoring, and explosion prevention.
• Numerical Modeling for Increased Understanding of the Behavior and Performance of Coal Mine Stoppings
  8/1/2004 - Conference papers
  In underground coal mines, concrete block stoppings are widely used to control mine ventilation. Researchers developed a numerical model to evaluate the performance of stopping materials and different wall geometries in a controlled environment.
• Use of a Test Box to Measure Response Times for Machine-Mounted Monitors
  5/1/2004 - Conference papers
  This study describes how response times of machine-mounted methane monitors were measured by placing the methane sensor heads in a specially designed box where they were exposed to an atmosphere containing a constant concentration of methane.
• Recent National Institute for Occupational Safety and Health Research Using Ground Penetrating Radar for Detection of Mine Voids
  7/1/2003 - Conference papers
  This study indicates that it may be possible to use ground penetrating radar (GPR) for initial underground mine studies followed by directional drilling to accurately delineate the extent and position of adjacent abandoned mine workings.
• Roof Screening: Best Practices and Roof Bolting Machines
  8/1/2002 - Conference papers, Safety guidelines, tips, and checklists
  Roof screening has been found to be very effective in controlling the fall of small rocks from the immediate roof surface. Data is presented from two mines that show a dramatic reduction in roof skin injuries when screening is used.
• The Introduction of Roof Bolting to U.S. Underground Coal Mines (1948-1960): A Cautionary Tale
  8/1/2002 - Conference papers
  The story of how roof bolting was implemented by the mining industry, but took so long to live up to its promise, is a fascinating example of the interaction between economics, technology, regulation, and science. It still has important lessons for today.
• Evaluating Performance Characteristics of Machine-Mounted Methane Monitors by Measuring Response Time
  6/1/2002 - Conference papers
  This publication examines a procedure for measuring the response time of machine-mounted methane monitors
• Technology for Remote Mine Seal Construction
  2/1/2002 - Conference papers
  Mine fires can be especially perilous because toxic products can quickly spread well beyond the fire zone thereby exposing all underground miners to dangerous and deadly conditions. This paper provides a review of the available materials and technology ...
• Reducing Enclosed Cab Drill Operator's Respirable Dust Exposure at Surface Coal Operation With a Retrofitted Filtration and Pressurization System
  2/1/2002 - Conference papers
  This report discusses a cooperative research study performed on a surface drill retrofitted with a new pressurization and filtration system. Respirable dust concentrations were substantially reduced from 0.64 mg/m3 during pre-testing to 0.05 mg/m3 duri...