Results 461 - 470 of 618

• Determining the Spatial Variability of Personal Sampler Inlet Locations
  8/1/2007 - Peer reviewed journal articles
  This article examines the spatial variability of dust concentrations within a coal miner’s breathing zone and the impact of sampling location at the cap lamp, nose, and lapel.
• Noise Assessment of Stone/Aggregate Mines: Six Case Studies
  8/1/2007 - Peer reviewed journal articles
  NIOSH completed a survey of equipment sound levels and worker noise exposures in the mining industry. The findings identify the equipment and machinery likely to cause worker overexposures and the workers found to be experiencing overexposures.
• Real-Time Estimation of Elemental Carbon Emitted from a Diesel Engine
  8/1/2007 - Peer reviewed journal articles
  This paper describes a simple, inexpensive, dependable, and field portable method for estimating the mass concentration of elemental carbon exiting the tailpipe of a diesel engine using a direct reading photometer in underground mines.
• Development of Coal Mine Face Ventilation Systems During the 20th Century
  8/1/2007 - Peer reviewed journal articles
  This article focuses on U.S. Bureau of Mines (USBM) and NIOSH research to examine factors that had a significant influence on mine face ventilation design during the past century.
• Airborne Dust Capture and Induced Airflow of Various Spray Nozzle Designs
  7/1/2007 - Peer reviewed journal articles
  Water spray characteristics, including droplet size and velocity, airborne dust capture potential, and induced airflow quantity for various spray nozzle designs were evaluated to provide basic information for improving spray applications.
• Coal Dust Particle Size Survey of US Mines
  7/1/2007 - Peer reviewed journal articles
  Results indicate that particle sizes of mine coal dust in intake airways are finer and would require more incombustible matter to be effectively inerted than the 65% incombustible specified in current regulations.
• Explosion Temperatures and Pressures of Metals and Other Elemental Dust Clouds
  7/1/2007 - Peer reviewed journal articles
  NIOSH's Pittsburgh Research Laboratory conducted a study of the explosibility of various metals and elemental dusts, focusing on explosion temperatures. The data will aid in evaluating explosion hazards in the minerals/metals processing industries.
• Reservoir Simulation-Based Modeling for Characterizing Longwall Methane Emissions and Gob Gas Venthole Production
  7/1/2007 - Peer reviewed journal articles
  This paper presents the development and results of a comprehensive, "dynamic," three-dimensional reservoir model of a typical multi-panel Pittsburgh coalbed longwall mine. Results presented in this paper include a simulation of gas flow patterns from th...
• Post-Explosion Observation of Experimental Mine and Laboratory Coal Dust Explosions
  7/1/2007 - Peer reviewed journal articles
  NIOSH's Pittsburgh Research Laboratory (PRL) and the Mine Safety and Health Administration (MSHA) conducted joint research on post-explosion dust samples. The data will aid in future forensic investigations of accidental coal mine dust explosions.
• Heavy Construction Equipment Noise Study Using Dosimetry and Time-Motion Studies
  7/1/2007 - Peer reviewed journal articles
  This research determined noise exposures of equipment operators while documenting worker task. The types of equipment studied included asphalt pavers, backhoes, bulldozers, compaction equipment, excavators, haul trucks, and wheeled loaders.