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The National Institute for Occupational Safety and Health (NIOSH)





Mining Publication: Development of a canopy air curtain to reduce roof bolters' dust exposure
Keywords: Air curtain systems Bolters Filtration systems Respirable dust Ventilation curtains
Original creation date: July 2012
Authors: J Listak, TW Beck
Peer Reviewed Journal Article - July 2012
Download PDF Document (.001 MB)
NIOSHTIC2 Number: 20041873
Min Eng 2012 Jul; 64(7):72-79
The U.S. National Institute for Occupational Safety and Health (NIOSH) conducted a study to determine the effectiveness of a filtered air delivery system to reduce respirable dust exposure of roof bolter operators in underground coal mines. When performing roof bolting operations, roof bolter operators may experience exposure to high levels of respirable dust during a working shift, especially when working downwind of the continuous mining machine. While drilling and installing roof bolts, this filtered air system supplies a clean curtain of air over the roof bolter operator by means of a plenum mounted beneath the canopy. This experimentally designed air curtain, adapted for roof bolting machines used in this study, is based upon previous design prototypes, computational fluid dynamics (CFD) simulations and trial-and-error testing. Both the prototype and final designs were tested in the full-scale mining galleries at the Office of Mine Safety and Health Research (OMSHR) in Pittsburgh, PA before being taken underground for field testing. Test results of the system in both laboratory and field studies show reductions in operator exposure to respirable dust when the operator is positioned directly under the protected zone of the canopy.
Cover Sheet of publication Peer Reviewed Journal Article - July 2012
Download PDF Document (.001 MB)
NIOSHTIC2 Number: 20041873
Min Eng 2012 Jul; 64(7):72-79
See Also
Current NIOSH Dust Control Research for Noncoal Surface Mines
Development of a Roof Bolter Canopy Air Curtain for Respirable Dust Control
Emerging Technologies Control Respirable Dust Exposures for Continuous Mining and Roof Bolting Personnel
An Evaluation of Methods for Controlling Silica Dust Exposures on Roof Bolters
A Field Study of a Roof Bolter Canopy Air Curtain (2nd Generation) for Respirable Coal Mine Dust Control
Laboratory and Field Evaluation of Dust Collector Bags for Reducing Dust Exposure of Roof Bolter Operators
Laboratory Evaluation of a Canopy Air Curtain for Controlling Occupational Exposures of Roof Bolters
Maximizing Air Quality Inside Enclosed Cabs with a Unidirectional Filtration and Pressurization System
Respirable Quartz Hazard Associated with Coal Mine Roof Bolter Dust
Technology News 533 - Minimizing Respirable Dust Exposure in Enclosed Cabs by Maintaining Cab Integrity - TN-No. 533
Page last reviewed: May 20, 2013
Page last updated: May 20, 2013
Content source: National Institute for Occupational Safety and Health, Mining Program
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