Results 81 - 90 of 113

• Particulate Penetration of Porous Foam Used as a Low Flow Rate Respirable Dust Size Classifier
  7/1/2000 - Peer reviewed journal articles
  Because of the need to provide short-term or real-time estimates of worker respirable dust exposure, porous foam may be a viable classification media for a low flow rate, disposable respirable dust sampler for use in the coal mining industry.
• Flammability of Methane, Propane, and Hydrogen Gases
  5/1/2000 - Peer reviewed journal articles
  This paper reports the results of flammability studies for methane, propane, hydrogen, and deuterium gases in air conducted by the Pittsburgh Research Laboratory.
• Factors Affecting ANFO Fumes Production
  2/1/2000 - Conference papers
  Study of toxic fumes produced by the detonation of various ammonium nitrate/fuel oil (ANFO) mixtures and several cap-sensitive explosives.
• Performance Comparison of Rescue Breathing Apparatus
  10/1/1999 - Reports of Investigations
  A performance comparison of 14 rescue breathing apparatus was undertaken as an assessment of past and present worldwide technology. Rescue breathing apparatus are self-contained, closed-circuit breathing apparatus used for entry into areas having atmosp...
• Prediction of Longwall Methane Emissions: An Evaluation of the Influence of Mining Practices on Gas Emissions and Methane Control Systems
  10/1/1999 - Reports of Investigations
  An analysis of the consequences of increasing longwall panel dimensions, particularly face width, in gassy coalbeds. Continuous longwall face emission monitoring studies were conducted at two adjacent mines operating in the Pocahontas No. 3 Coalbed, whe...
• Proposal for Certification Tests and Standards for Closed-Circuit Breathing Apparatus
  8/1/1999 - Information Circulars
  In this report, recommendations are made to (1) replace the present regulations for certification of closed-circuit breathing apparatus with quantitative tests specifying metabolic work rate rather than activity, (2) continuously monitor relevant physio...
• In-depth Survey Report: Control Technology for Environmental Enclosures - The Effect of Wind Speed Upon Aerosol Penetration Into an Enclosure at Clean Air Filter, Defiance, IA
  2/1/1999 - NIOSH/USBM numbered publications
  The effect of wind speed upon aerosol penetration into an idealized enclosure was studied.
• NIOSH Hazard ID 3 - Carbon Monoxide Poisoning and Death After the Use of Explosives in a Sewer Construction Project
  3/1/1998 - Hazards IDs
  In a recent incident, three cases of CO poisoning in a confined space, including one fatality, were caused by CO migrating through soil after nearby use of explosives during a municipal sewer project. This incident illustrates that CO from subsurface de...
• A Technique for Measuring Toxic Gases Produced by Blasting Agents
  1/1/1997 - Conference papers
  Traditional techniques to experimentally determine toxic fumes produced by detonating high explosives are not applicable to blasting agents. To detonate properly, blasting agents require confinement, a significant booster, and other parameters.
• A 20-Liter Furnace Test Method to Determine the Combustion Gas Toxicity of Conveyor Belts
  1/1/1996 - Reports of Investigations
  Pittsburgh Research Center conducted experiments with mine conveyor belt samples in a 20-L furnace and in a laboratory fire tunnel to measure and compare the major toxic gas concentrations evolved during the combustion of the materials.