Results 471 - 480 of 618

• Thermally Induced Filter Bias in TEOM® Mass Measurement
  7/1/2007 - Peer reviewed journal articles
  Researchers at NIOSH have long used stationary tapered element oscillating microbalances (TEOMs®) in laboratory settings. They have served to assess the mass concentration of laboratory-generated particulates in experimental dust chambers and ...
• In-Cab Noise Reduction on an Air-Rotary Drill Rig
  5/1/2007 - Peer reviewed journal articles
  This paper summarizes a NIOSH investigation of engineering noise controls to reduce sound levels in cabs on air-rotary drill rigs. Results revealed that some drillers are exposed to A-weighted sound levels exceeding 85 dB even though a cab is used.
• Comparing Measurements of Carbon in Diesel Exhaust Aerosols Using the Aethalometer, NIOSH Method 5040, and SMPS
  4/1/2007 - Peer reviewed journal articles
  The objective of this paper is to compare the results among (1) a NIOSH published standard to determine the mass of EC and OC on filter samples, (2) the aethalometer, which uses light extinction to measure "black carbon" or BC, and (3) measuring particl...
• Reducing Respirable Dust Exposure of Workers Using an Improved Clothes Cleaning Process
  4/1/2007 - Peer reviewed journal articles
  A quick, safe, and effective method has been developed that allows workers to clean their dust laden work clothing periodically throughout the day.
• The Fate of Metal (Fe) During Diesel Combustion: Morphology, Chemistry, and Formation Pathways of Nanoparticles
  4/1/2007 - Peer reviewed journal articles
  This report describes an investigation in which NIOSH used iron-doped diesel fuel to generate metal-bearing diesel particles and a subsequent analysis of the particles using transmission electron microscopy (TEM) and energy-dispersive spectroscopy (EDS).
• Effectiveness of Various Concentrations of an Inert Gas Mixture for Preventing and Suppressing Mining Equipment Cab Fires: Development of a Dual-Cab Fire Inerting System
  3/1/2007 - Peer reviewed journal articles
  NIOSH conducted large-scale experiments to evaluate the effectiveness and safety of various concentrations of an inert gas mixture for preventing and suppressing cab fires. This has led to the choice of an optimum gas mixture concentration.
• Implementation of an Ergonomics Process at a US Surface Coal Mine
  2/1/2007 - Peer reviewed journal articles
  In 2000, NIOSH initiated a long-term project to demonstrate how to implement an ergonomics process to identify and reduce exposures to ergonomic risk factors found in mining. This paper discusses how a coal mine implemented an ergonomics program.
• Technique to Assess Hazards in Underground Stone Mines: the Roof Fall Risk Index (RFRI)
  1/1/2007 - Peer reviewed journal articles
  A roof-fall hazard-assessment technique was developed based on engineering judgment acquired from extensive underground stone mine experience and on examination of the literature. The technique uses observational processes to assess roof fall hazard.
• Survey of Noise in Coal Preparation Plants
  1/1/2007 - Peer reviewed journal articles
  Noise surveys were conducted in eight coal preparation plants. Results indicate that only workers who routinely spend a significant portion of their shift in the plants (away from the control rooms) are susceptible to overexposure from noise.
• Noise Exposure and Hearing Conservation in US. Coal Mines - A Surveillance Report
  1/1/2007 - Peer reviewed journal articles
  This study examines the patterns and trends in noise exposure documented in data collected by Mine Safety and Health Administration inspectors at U.S. coal mines from 1987 through 2004.