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Mining Publication: Technology News 461 - Coal Dust Explosibility Meter
Keywords: Coal dust Explosions
Original creation date: July 1997
Authors: National Institute for Occupational Safety and Health
Technology News - July 1997
Download PDF Document (0.14 MB)
NIOSHTIC2 Number: 20000467
Pittsburgh, PA: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, Technology News 461, 1997 Jul :1-2
Past research has shown that the accumulation of coal dust in underground coal mines can be rendered nonexplosible by adding sufficient quantities of inert rock dust, such as limestone dust. Federal regulations for underground coal mines require mine operators to dust mine corridors with an inert rock dust and maintain a total incombustible content of at least 65% in the entries and at least 80% in the returns, where the coal dust is expected to be finer in size. Currently, samples of the deposited coal and rock dust are collected for above ground analysis of the inert percentage, which consists of rock dust, ask, and moisture. The processing time for this analysis can be as long as 2 weeks. In addition, research has shown that measuring the incombustible percentage is not always sufficient to determine the explosibility of a sample, especially for finer coal dust. The National Institute for Occupational Safety and Health, Pittsburgh Research Center, has devised a prototype hand held instrument that can provide a direct assessment of the potential explosibility of a coal and rock dust mixture.
Image of publication Technology News 461 - Coal Dust Explosibility MeterTechnology News - July 1997
Download PDF Document (0.14 MB)
NIOSHTIC2 Number: 20000467
Pittsburgh, PA: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, Technology News 461, 1997 Jul :1-2
See Also
A Centennial of Mine Explosion Prevention Research
Coal Dust Explosibility
Coal-Dust Explosion Tests in the Experimental Mine 1919 to 1924, Inclusive
Evaluation of the Bagged Stone Dust Barrier Effectiveness in a Bord and Pillar Mine
The Explosibility of Coal Dust
How Does Limestone Rock Dust Prevent Coal Dust Explosions in Coal Mines?
Mitigating Coal Dust Explosions in Modern Underground Coal Mines
Observations of Post-Explosion Dust Samples From an Experimental Mine
Rock Dusting Considerations in Underground Coal Mines
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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