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Mining Publication: Field Evaluation of Air-blocking Shelf for Dust Control on Blasthole Drills
Keywords: Drills Dust control Respirable dust Respirable dust level
Original creation date: March 2011
Authors: JD Potts, WR Reed
Peer Reviewed Journal Article - March 2011
Download PDF Document (0.43 MB)
NIOSHTIC2 Number: 20039267
Int J Min Reclam Environ 2011 Mar; 25(1):32-40
In previous studies, an air-blocking shelf has been shown to be successful in reducing respirable dust leakage from the drill shroud in a laboratory setting. Dust reductions of up to 81 percent were achieved with the shelf under operating conditions consisting of a 1.9:1 collector-to-bailing airflow ratio and a 5.1-cm gap between the shroud and ground. Recent research focused on evaluating the shelf on two actual operating blasthole drills, in much more severe environments. In the field, the shelf reduced dust levels in the areas surrounding one operating blasthole drill by 70 percent. Dust reductions measured in the immediate vicinity of the shroud were reduced by 66 percent at one mine and 81 percent at the other mine. These field tests confirm that the air-blocking shelf is useful for reducing respirable dust generation from blasthole drills.
Image of publication Field Evaluation of Air-blocking Shelf for Dust Control on Blasthole DrillsPeer Reviewed Journal Article - March 2011
Download PDF Document (0.43 MB)
NIOSHTIC2 Number: 20039267
Int J Min Reclam Environ 2011 Mar; 25(1):32-40
See Also
Controlling Respirable Dust in Underground Coal Mines in the United States
Dust Considerations When Using Belt Entry Air to Ventilate Work Areas
The Effects of Water Spray Placement for Controlling Respirable Dust and Face Methane Concentrations
Field Assessment of Control Techniques and Long-Term Dust Variability for Surface Coal Mine Rock Drills and Bulldozers
Improved Drill Shroud Capture of Respirable Dust Utilizing Air Nozzles Underneath the Drill Deck
Laboratory Evaluation of Shield Dust Entrainment in High-Velocity Airstreams
Laboratory Testing To Quantify Dust Entrainment During Shield Advance
Performance of a Light Scattering Dust Monitor at Various Air Velocities: Results of Sampling in the Active Versus the Passive Mode
Respirable Dust
Status of a Tapered Element, Oscillation Microbalance-Based Continuous Respirable Coal Mine Dust Monitor
Technology News 447 - Dust Collector Discharge Shroud Reduces Dust Exposure to Drill Operators at Surface Coal Mines
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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