Results 141 - 150 of 646

• Observations of Post-Explosion Dust Samples From an Experimental Mine
  5/1/2009 - Conference papers
  This study shows a very good agreement between observations of partially burnt coal particles under a scanning electron microscopy (SEM) and floor dust samples, collected and analyzed using the alcohol coking test and SEM, to estimate flame travel.
• Diesel Exhaust Particulate Material Expression of in Vitro Genotoxic Activities When Dispersed Into a Phospholipid Component of Lung Surfactant
  3/1/2009 - Conference papers
  The study objective was to compare some in vitro genotoxic activities between solvent-extraction and surfactant-dispersion preparations for a generally available diesel exhaust reference material, U.S. National Institute for Standards and Technology DPM...
• Progress Toward Improved Engineering of Seals and Sealed Areas of Coal Mines
  2/1/2009 - Conference papers
  NIOSH has initiated a seals research program with collaborators from Safety in Mines Testing and Research Station (SIMTARS) in Australia, West Virginia University (WVU), the Naval Research Laboratory (NRL), and U.S. Army Corps of Engineers (USACE).
• Testing and Evaluation of an Inflatable Temporary Ventilation Control Device
  2/1/2009 - Conference papers
  This paper describes an inflatable temporary mine sealing technology and presents the results of NIOSH tests on the device.
• Understanding Mine Fire Disasters by Determining the Characteristics of Deep-Seated Fires
  2/1/2009 - Conference papers
  This paper describes the fire tests, provides insight into characteristics of flame spread, and presents the CFD modeling work results of tests to help determine the characteristics for deep-seated fires.
• Investigation into the Practical Use of Belt Air at US Longwall Operations
  2/1/2009 - Conference papers
  This paper discusses the current ventilation practices regarding the use of belt air during gateroad development and longwall panel extraction.
• Current Trends in Reducing Ground Fall Accidents in US Coal Mines
  2/1/2009 - Conference papers
  Each of the electronic versions of the MSHA fatality reports since 1995 was analyzed in detail, categorized by the type of the ground fall hazard. The remainder of the paper is devoted to evaluating each of the five largest categories.
• Critical Review of Numerical Stress Analysis Tools for Deep Coal Longwall Panels Under Strong Strata
  2/1/2009 - Conference papers
  This report describes a study undertaken by NIOSH to more fully appreciate the application of numerical models in support of research on dynamic failure (bumps and bounces) in deep western coal mines.
• Horizontal Air Blocking Shelf Reduces Dust Leakage from Surface Drill Shroud
  2/1/2009 - Conference papers
  This paper presents the results of laboratory testing to determine if the installation of a horizontal air blocking shelf around the inside perimeter of a surface mining drill deck will improve dust capture.
• Maximizing Air Quality Inside Enclosed Cabs with a Unidirectional Filtration and Pressurization System
  2/1/2009 - Conference papers
  This paper describes a recently completed cooperative research effort by NIOSH with Sy-Klone International and Vulcan Materials Company to evaluate the effectiveness of a newly designed uni-directional filtration and pressurization system that brings al...