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Sound power level study of a roof bolter.

Authors
Peterson-JS; Kovalchik-PG; Matetic-RJ
Source
Trans Soc Min Metal Explor 2006 Jan; 320:171-177
NIOSHTIC No.
20031470
Abstract
The National Institute for Occupational Safety and Health (NIOSH) has initiated a study of a roof bolter to reduce noise exposure to mine roof-bolter operators. An important segment of this research entails determining the affect of various drilling configurations on the performance (penetration rate) and sound power emissions when drilling into granite. Test conditions included using various combinations of rotational speeds and thrusts, using 2.54- and 3.49-mm- (1- and 1 3/8-in.-) diameter hexagonal and round drill steels, using vacuum and wet conditions and using drill media of differing compressive strengths. This paper details the affects of each of these variables on the performance and sound power level emission. When drilling into granite, it was found that wet drilling generated lower sound power levels and performed better than vacuum drilling.
Keywords
Noise-induced-hearing-loss; Noise-exposure; Noise; Hearing-loss; Mining-industry; Underground-mining; Surface-mining; Coal-mining; Engineering-controls; Mining-equipment; Noise-sources; Roof-bolters; Drilling
Contact
NIOSH Pittsburgh Research Laboratory, P.O. Box 18070, Pittsburgh, PA 15236
CODEN
TMENAE
Publication Date
20060101
Document Type
Journal Article
Editors
Yernberg-WR
Fiscal Year
2006
NTIS Accession No.
NTIS Price
ISBN No.
0873352556
ISSN
1075-8623
NIOSH Division
PRL
Priority Area
Research Tools and Approaches: Control Technology and Personal Protective Equipment
Source Name
Transactions of the Society for Mining, Metallurgy, and Exploration
State
PA
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