Results 41 - 50 of 70

• 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.
• 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.
• Controlling Dust Exposures in Longwall Mining Utilizing A Simple Barrier
  12/1/2009 - Peer reviewed journal articles
  This investigation tested the feasibility of enhancing existing engineering dust controls by mounting a simple barrier on a longwall shearer that separated the operators from the cutting drums.
• How Does Limestone Rock Dust Prevent Coal Dust Explosions in Coal Mines?
  9/1/2009 - Peer reviewed journal articles
  This study investigates how limestone rock dust prevents the propagation of coal dust explosions by assessing its changes in chemical composition.
• Field Evaluation of a Passive Diesel Particulate Filter at a Limestone Mine
  4/1/2009 - Peer reviewed journal articles
  In this study, the operators of a limestone mine retrofitted a loader used for clean-up operations with a passive DPF that was lightly catalyzed and used a fuel additive to initiate regeneration at low exhaust temperatures.
• Horizontal Air-Blocking Shelf Reduces Dust Leakage from Surface Drill Shroud
  12/1/2008 - Peer reviewed journal articles
  This paper describes a recent research project initiated by NIOSH which identified improvement of the drill shroud design as one of its main objectives for reducing the exposure of surface miners to respirable dust.
• Effects of Sampling Artifacts on Occupational Samples of Diesel Particulate Matter
  7/1/2008 - Peer reviewed journal articles
  In this study, NIOSH investigated the effects of adsorption artifact on diesel particulate matter samples from occupational settings.
• Coal Dust and Methane
  6/1/2008 - Peer reviewed journal articles
  This article describes the Coal Dust Explosibility Meter (CDEM), a hand-held instrument developed by NIOSH, which uses optical reflectance to measure the explosibility of a rock dust and coal dust mixture, which is now commercially available.
• Field Measurement of Diesel Particulate Matter Emissions
  3/1/2008 - Peer reviewed journal articles
  This paper describes a quick and economic method which has been developed to estimate engine particulate emission levels.
• Role of Lubrication Oil in Particulate Emissions from a Hydrogen-Powered Internal Combustion Engine
  10/1/2007 - Peer reviewed journal articles
  The primary goal of this study was to investigate the formation of combustion-generated particles derived from lubrication oil in the absence of fuel-produced soot.