Results 51 - 60 of 61

• Crystalline Silica Analysis: A Comparison of Calibration Materials and Recent Coal Mine Dust Size Distributions
  1/1/2006 - Peer reviewed journal articles
  Since 1982, standard calibration materials recommended for respirable crystalline silica analysis by the Mine Safety and Health Administration (MSHA) P7 Infrared Method and the NIOSH X-ray Diffraction (XRD) Analytical Method 7500 have undergone minor ch...
• Differential Pressure Response of 25-mm-Diameter Glass Fiber Filters Challenged with Coal and Limestone Dust Mixtures
  2/1/2002 - Peer reviewed journal articles
  This article summarized results of research conducted by the National Institute for Occupational Safety and Health (NIOSH) at its Pittsburgh Research Laboratory. The objective of this work was to determine the correlation between the mass (M) of respir...
• The Effects of Low Quartz Mass Loading and Spatial Variability on the Quartz Analysis of Surface Coal Mine Dust Samples
  9/1/2001 - Peer reviewed journal articles
  The objectives of this work are to 1) evaluate the performance of the P7 method on field samples of low quartz mass loadings, 2) evaluate the magnitude of dust mass spatial variability within an enclosed cab environment, and 3) estimate the subsequent p...
• Airborne Dust Liberation During Coal Crushing
  6/1/2001 - Peer reviewed journal articles
  This paper describes laboratory experiments in a wind tunnel with a roll crusher to identify relationships among crushing parameters, product size, coal rank properties and airborne dust generation.
• Suggestion of a Cause-and-Effect Relationship Among Coal Rank, Airborne Dust, and Incidence of Workers' Pneumoconiosis
  11/1/2000 - Peer reviewed journal articles
  Health research studies have identified that the risk of developing and the severity of CWP are directly related to the amount of respirable dust exposure and the coal rank. The Pittsburgh Research Laboratory is pursuing more in-depth studies of coal ch...
• Experimental Mine and Laboratory Dust Explosion Research at NIOSH
  5/1/2000 - Peer reviewed journal articles
  Explosion characteristics such as the minimum explosible concentration and the rock dust inerting requirements were measured for various combustible dusts. The explosion resistance characteristics of seals was also evaluated.
• Flammability Limit Measurements for Dusts in 20-L and 1-m3 Vessels
  5/1/2000 - Peer reviewed journal articles
  Two types of flammability limits have been measured for various dusts in the Fike 1-m3 (1000-L) chamber and in the Pittsburgh Research Laboratory (PRL) 20-L chamber.
• Overview of Dust Explosibility Characteristics
  5/1/2000 - Peer reviewed journal articles
  Provides information on the explosibility and ignitability properties of dust clouds that can be used to improve safety in industries that generate, process, use, or transport combustible dusts.
• Improved Dust Control for Bag Handlers
  4/1/2000 - Peer reviewed journal articles
  A recent report evaluating silica exposure levels in the metal/nonmetal mining industry noted that bag packaging and loading are some of the occupations at the greatest risk.
• Field Assessment of Control Techniques and Long-Term Dust Variability for Surface Coal Mine Rock Drills and Bulldozers
  9/1/1999 - Peer reviewed journal articles
  Airborne respirable dust surveys were conducted at six surface coal mines to investigate the effectiveness of dust control methods used on rotary rock drills and bulldozers.