Results 21 - 30 of 226

• Prediction of Longwall Methane Emissions and the Associated Consequences of Increasing Longwall Face Lengths: A Case Study in the Pittsburgh Coalbed
  6/1/2006 - Conference papers
  NIOSH conducted a study with the goal of characterizing methane emissions from increasing face lengths in the Pittsburgh Coalbed and providing a method of predicting emissions increases from longer faces and of planning for more methane control.
• Predicting Methane Emissions from Longer Longwall Faces by Analysis of Emission Contributors
  6/1/2006 - Conference papers
  NIOSH conducted a longwall methane emission and mining time study at a Pittsburgh Coalbed mine to predict emissions from a longer face, and developed and applied mathematical formulas and constants to characterize four emission contributors.
• Behavior of Nitrogen Oxides in the Product Gases from Explosive Detonations
  1/1/2006 - Conference papers
  Toxic fumes generated by explosives have been a concern for blasters, explosive manufacturers, and mining companies. In this study, 10 lb. charges of confined blasting agent were detonated in a closed chamber, and then detonation gases were analyzed.
• Field Studies of CO Migration from Blasting
  2/1/2005 - Conference papers
  Describes a small-scale field study to identify key factors that may contribute to the migration of CO through the ground.
• Ignition of Methane-Air Mixtures by Laser Heated Small Particles
  5/1/2000 - Peer reviewed journal articles
  Optical technologies have progressed rapidly in the past 15 years. NIOSH is conducting a study to help provide a scientific basis for developing appropriate safety guidelines for optical equipment in underground coal mines.
• Laser Ignition of Flammable Gas
  3/1/1999 - Conference papers
  Emerging laser technologies are quickly gaining acceptance in the industrial workplace. This NIOSH research provides a scientific basis for developing safety guidelines for optical equipment in the presence of flammable methane gas and coal dust.
• Methane Control for Underground Coal Mines
  1/1/1994 - Information Circulars
  This paper describes the history and technology of methane drainage in the US and other countries.
• Remote Fiber-Optic Methane Monitor
  1/1/1992 - Reports of Investigations
  Reports on the U.S. Bureau of Mines development and testing of an instrinsically safe methane monitor based on differential absorption of infrared light.
• Methane Drainage and Migration
  2/18/2021 - Research areas
  Methane is an odorless, tasteless, colorless, lighter-than-air gas formed by the decomposition of organic and other carbonaceous materials. From 5% to 15% can form an explosive mixture which, if ignited, can have catastrophic consequences.
• Advanced Strategies for Controlling Exposures to Diesel Aerosols
  4/2/2020 - Research projects
  A project to develop and implement workplace solutions to reduce miners’ overexposure to hazardous airborne contaminants emitted from diesel-powered equipment.