Results 21 - 30 of 165

• 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.
• 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.
• 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.
• Improving Prevention and Suppression of Equipment Fires in Metal/Nonmetal Mines
  12/14/2023 - Research projects
  A project to develop effective measures to prevent hot surface ignitions on mining equipment, improve fire suppression techniques, and develop a diagnostic tool to determine the effect of mine fires on a mine’s ventilation system.
• High Energy Battery Thermal Runaway Alleviation Protection (TRAP) Flame Arrestor for Mine Safety
  2/14/2023 - Contracts and cooperative agreements
  A contract with ADA Technologies to design and implement a purpose-built flame arrestor for use in explosion-proof enclosures for applications in gassy mines.
• Intrinsically Safe Mine Rescue UAV Design - Phase 1
  6/23/2021 - Contracts and cooperative agreements
  A contract with Xtraction Science and Technology, Inc., to examine instrinsically safe mine rescue UAV design.
• 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.
• Comparison of the CAS-POL and IOM Samplers for Determining the Knockdown Efficiencies of Water Sprays on Float Coal Dust
  3/1/2019 - Peer reviewed journal articles
  An article examining the effects of spray type, operating pressure, and spray orientation on knockdown efficiencies on float coal dust for seven different water sprays.
• Ventilation of Longwall Faces
  1/29/2019 - Research projects
  A project to improve the capabilities to detect changing ventilation conditions along a longwall face arising from poor roof caving characteristics and increasing face length.
• Evaluation, Scaled Testing, and Testing Design of Active Explosion Barriers Systems for the US Underground Coal Mines
  12/12/2018 - Contracts and cooperative agreements
  A contract exploring the use of active explosion barrier systems in United States underground coal mines.