Results 21 - 30 of 1398

• Technology News 548 - Bit Isolator Reduces Drilling Noise in Underground Coal Mines
  3/1/2012 - Technology News
  This paper describes an engineering noise control that reduces roof bolting machine (RBM) operators’ exposure to noise in underground coal mines, thereby decreasing the risk of noise-induced hearing loss (NIHL) in RBM operators and nearby workers.
• Evaluation of the Approach to Respirable Quartz Exposure Control in U.S. Coal Mines
  2/1/2012 - Peer reviewed journal articles
  The performance of the current regulatory approach was found to be lacking due to the use of a variable property - quartz content in airborne dust - to establish a standard for subsequent exposures.
• Technology News 546 - Medium Frequency Mine Emergency Communications - An Emerging Technology
  2/1/2012 - Technology News
  Medium frequency communications systems do not require a powered underground infrastructure to be installed for operation, and may therefore provide a higher degree of survivability after a mine disaster than other types of systems.
• Field Study of Longwall Coal Mine Ventilation and Bleeder Performance
  1/1/2012 - Peer reviewed journal articles
  To assess the effectiveness of commonly applied ventilation strategies for improving air distribution and ventilation controls to meet statutory requirements.
• Understanding and Quantifying Arc Flash Hazards in the Mining Industry
  11/1/2011 - Peer reviewed journal articles
  Noncontact electric arc burns are the most common cause of electrical injury in mining according to data for 1990 through 2001. Results from a NIOSH study of arc flash hazards in mining and recommendations to reduce these injuries are presented.
• CO and CO2 Emissions from Spontaneous Heating of Coal Under Different Ventilation Rates
  10/1/2011 - Peer reviewed journal articles
  This study evaluated CO and CO2 emissions from spontaneous heating of a U.S. coal sample in an isothermal oven under different airflow ventilation rates from 100 to 500 cm3/min. Experiments were conducted at oven temperatures of 70, 90, and 100 °C.
• Diesel Aerosols and Gases in Underground Mines: Guide to Exposure Assessment and Control
  10/1/2011 - Guides and manuals, Reports of Investigations
  A comprehensive guide to establish a program to curtail diesel particulate matter emissions, control pollutants after release in an underground mine environment and reduce exposures using administrative controls.
• NIOSH Hazard ID 16 - Non-Conforming Rock Dust
  10/1/2011 - Hazards IDs
  In September 2011, as part of an ongoing investigation, NIOSH determined that rock dust not conforming to the requirements in 30 CFR Part 75.2 for particle size and caking properties is being used in U.S. underground coal mines.
• Benchmarking Longwall Dust Control Technology and Practices
  9/1/2011 - Peer reviewed journal articles
  Results from the NIOSH underground dust surveys and current longwall dust control technology and operating practices are discussed.
• When Do You Take Refuge? Decisionmaking During Mine Emergency Escape
  8/1/2011 - PC software, Reports of Investigations, Training materials
  This training exposes trainees to the types of decisions that they may need to make during a mine emergency escape and stimulate group discussion about when and why to use a refuge alternative.