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The National Institute for Occupational Safety and Health (NIOSH)





Mining Publication: Mitigating Coal Dust Explosions in Modern Underground Coal Mines
Keywords: Coal dust Explosions Rock dusting
This page is archived for historical purposes and is no longer being maintained or updated.
Original creation date: November 2009
Authors: ML Harris, KL Cashdollar, C Man, ED Thimons
Conference Paper - November 2009
Download PDF Document (0.43 MB)
NIOSHTIC2 Number: 20036230
Mine Ventilation: Proceedings of the Ninth International Mine Ventilation Congress, New Delhi, India, November 10-13, 2009. Panigrahi DC, ed., New Delhi, India: Oxford & IBH Publishing Co. Pvt. Ltd., 2009; 1:143-149
The National Institute for Occupational Safety and Health (NIOSH), as part of its continuing research program for evaluating coal dust explosion hazards, has investigated several areas in which current practices may need to be updated in order to adequately protect mines against coal dust propagated explosions. In the United States, current rock dusting requirements remained largely unchanged since 1969. US Title 30 Code of Federal Regulations Section 75.403 is based on a coal dust particle size survey performed in the 1920s and later was supplemented by full-scale testing of the rock dust ability to inert a coal dust explosion. NIOSH recently conducted a comprehensive survey of US underground coal mines to determine the range of coal particle sizes found in dust samples collected from the mine entries. Due to advancements in technology and modern coal mining techniques, the current coal dust particles in intake airways are significantly finer than those found in the mines in the 1920s. According to past full-scale dust explosion test results, the current rock dusting practices used in mines today to inert a coal dust explosion may not be adequate. Other closely related issues such as rock dust testing methods and sampling procedures are discussed.
Image of publication Mitigating Coal Dust Explosions in Modern Underground Coal MinesConference Paper - November 2009
Download PDF Document (0.43 MB)
NIOSHTIC2 Number: 20036230
Mine Ventilation: Proceedings of the Ninth International Mine Ventilation Congress, New Delhi, India, November 10-13, 2009. Panigrahi DC, ed., New Delhi, India: Oxford & IBH Publishing Co. Pvt. Ltd., 2009; 1:143-149
See Also
Coal Dust Explosibility
Coal Dust Explosibility Meter Evaluation and Recommendations for Application
Field Evaluation of the Coal Dust Explosibility Meter
How Does Limestone Rock Dust Prevent Coal Dust Explosions in Coal Mines?
How to use the Coal Dust Explosibility Meter
Particle Size and Surface Area Effects on Explosibility Using a 20-L Chamber
Recommendations for a New Rock Dusting Standard to Prevent Coal Dust Explosions in Intake Airways
Rock Dusting
Rock Dusting Considerations in Underground Coal Mines
Technology for Real-Time Monitoring of Coal Dust Explosion Hazards
Technology News 515 - Float Coal Dust Explosion Hazards
Page last reviewed: September 21, 2012
Page last updated: September 21, 2012
Content source: National Institute for Occupational Safety and Health, Mining Program
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