Results 21 - 30 of 40

• Review of Rock Dusting Practices in Underground Coal Mines
  11/1/2016 - Information Circulars
  A report presenting research into the potential explosion hazard associated with excessive coal dust accumulating on elevated surfaces, the efficacy of wet rock dusting, and the need for mines to develop comprehensive rock dusting programs
• Improving Coal Dust Explosion Hazard Assessment Strategies
  10/22/2016 - Research projects
  A project to eliminate coal dust explosions in underground coal mines.
• Metering and Distribution Improvements to Increase the Effectiveness and Efficiency of Rock Dusters
  7/19/2016 - Contracts and cooperative agreements
  A contract to develop and implement a prototype rock duster that will use sensing technology to determine the amount of coal dust in the mine atmosphere and distribute an appropriate amount of rock dust to effectively inert the coal dust present.
• LiDAR Technology Adaptation to Underground Coal Mines for Float Coal Dust and Rock Dust Mapping Applications
  7/19/2016 - Contracts and cooperative agreements
  A contract to evaluate LiDAR sensing technology to estimate dispersion distances of float coal dust and assess adequacies of rock dust coverage over large areas.
• Development of an Anti-Caking Rock Dust
  7/18/2016 - Contracts and cooperative agreements
  A contract to develop anti-caking rock dust products.
• Assessment of Technology for Non-destructive Testing of In-situ Underground Mine Seals
  7/16/2016 - Contracts and cooperative agreements
  A contract to assess four types of existing technology that can be applied to seals in a nondestructive manner under experimental conditions, including radio frequency sensing, ultrasonic sensing, ground penetrating radar, and tracer gas methods.
• Sampling and Analysis Method for Measuring Airborne Coal Dust Mass in Mixtures with Limestone (Rock) Dust
  4/1/2016 - Peer reviewed journal articles
  This article by NIOSH discusses a new sampling and analysis protocol to accurately measure the coal dust portion of airborne dust when mixed with incombustible limestone dust.
• Design and Development of a Dust Dispersion Chamber to Quantify the Dispersibility of Rock Dust
  1/1/2016 - Peer reviewed journal articles
  An article describing the design and development of a dust dispersion chamber to conduct quantitative laboratory-scale dispersibility experiments as a screening tool for candidate rock dusts.
• Particle Size and Surface Area Effects on Explosibility Using a 20-L Chamber
  6/25/2015 - Peer reviewed journal articles
  A paper examining the particle size distributions, specific surface areas (SSA), and the explosion suppression effectiveness of various rock dusts.
• Technology for Real-Time Monitoring of Coal Dust Explosion Hazards
  10/1/2012 - News articles
  The NIOSH Coal Dust Explosibility Meter (CDEM) is available for purchase and use in underground coal mines. A recent Information Circular supports its use for real-time explosibility testing of rock and coal dust samples.