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The National Institute for Occupational Safety and Health (NIOSH)





Mining Publication: Design of a Water Curtain to Reduce Accumulations of Float Coal Dust in Longwall Returns
Keywords: Coal dust Float dust Water curtains Water spraying
Original creation date: July 2020
Authors: C Seaman, M Shahan, T Beck, S Mischler
Peer Reviewed Journal Article - July 2020
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NIOSHTIC2 Number: 20060570
Int J Min Sci Technol 2020 Jul; 30(4):443-447
Accumulation of float coal dust (FCD) in underground mines is an explosion hazard that affects all underground coal mine workers. While this hazard is addressed by the application of rock dust, inadequate rock dusting practices can leave miners exposed to an explosion risk. Researchers at the National Institute for Occupational Safety and Health (NIOSH) have focused on developing a water curtain that removes FCD from the airstream, thereby reducing the buildup of FCD in mine airways. In this study, the number and spacing of the active sprays in the water curtain were varied to determine the optimal configuration to obtain peak knockdown efficiency (KE) while minimizing water consumption.
First page of Design of a Water Curtain to Reduce Accumulations of Float Coal Dust in Longwall ReturnsPeer Reviewed Journal Article - July 2020
Go to Web Page
NIOSHTIC2 Number: 20060570
Int J Min Sci Technol 2020 Jul; 30(4):443-447
See Also
Characterization of Airborne Float Coal Dust Emitted During Continuous Mining, Longwall Mining, and Belt Transport
Coal Dust Explosibility Meter Evaluation and Recommendations for Application
Continuous Miner Spray Considerations for Optimizing Scrubber Performance in Exhaust Ventilation Systems
Effect of Ground Control Mesh on Dust Sampling and Explosion Mitigation
Full-Scale Testing of the Float Dust Deposition Meter
Open-air Sprays for Capturing and Controlling Airborne Float Coal Dust on Longwall Faces
Reducing Float Coal Dust: Field Evaluation of an Inline Auxiliary Fan Scrubber
Rock Dusting Considerations in Underground Coal Mines
Sensors for Automated Control of Coal Dust (SACCD)
Technology News 515 - Float Coal Dust Explosion Hazards
Page last reviewed: April 20, 2021
Page last updated: April 20, 2021
Content source: National Institute for Occupational Safety and Health, Mining Program
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