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Mining Publication: Noise Abatement of Pneumatic Rock Drill
Keywords: Noise Noise and vibration control Power tools
Original creation date: December 1974
Authors: CR Summers, JN Murphy
Report of Investigations - December 1974
Download PDF Document (5.70 MB)
NIOSHTIC2 Number: 10000217
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 7998, 1974 Dec; :1-45
In response to the Coal Mine Health and Safety Act of 1969, mandatory noise standards have been developed that specify time-noise limits of mine personnel exposure. Most affected by elevated noise levels is the pneumatic roof bolter operator, both in terms of levels near or in excess of 115 dba and in terms of length of exposure. Therefore, the principal emphasis of this Bureau of Mines report is on pneumatic drill noise control. It is not the intent of this report to suggest any drill redesign; instead, methods are suggested to reduce the noise level by complementing existing machines. An integral muffler system and a separate muffler system were tested in an attempt to lower pneumatic drill noise levels. Pneumatic drills, when new, operate at about 115 dba when drilling in sandstone. Using the drill muffler systems, it was possible to decrease the noise level of a 115-dba stope drill to approximately 100 dba.
Image of publication Noise Abatement of Pneumatic Rock DrillReport of Investigations - December 1974
Download PDF Document (5.70 MB)
NIOSHTIC2 Number: 10000217
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 7998, 1974 Dec; :1-45
See Also
Analysis of a Mechanism Suspension to Reduce Noise from Horizontal Vibrating Screens
Determination of Sound Exposures (DOSES): Software Manual and Implementation Guide
Modified Tail Section Reduces Noise on a Continuous Mining Machine
A Noise Control for A Roof Bolting Machine: Collapsible Drill Steel Enclosure
Noise Exposure in Longwall Mining and Engineering Controls Research
Results of Noise Measurements from Underground Testing of a Roof Bolting Machine Duty Cycle
A Technique for Estimating the Sound Power Level Radiated by Pneumatic Rock Drills and the Evaluation of a CSIR Prototype Rock Drill with Engineering Noise Controls
Technology News 536 - NIOSH Develops New Software to Analyze and Reduce Noise Exposure
Technology News 538: Acoustic Enclosure to Reduce Noise From Vibrating Screen Mechanism Housings
Water Well Safety Bits: Health And Safety Information For The Water Well Industry
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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