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Measuring the Sound Power Level of Percussion Drills.

Authors
Stein-RR
Source
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 9524, 1994 Jan; :1-9
Link
NIOSHTIC No.
10005659
Abstract
Occupational noise caused by the rock drills used in mining was investigated by the U.S. Bureau of Mines. Using a large reverberation chamber and an automated drill test fixture (ADTF), the sound power levels of mining drills were measured to determine if there are types of drills that are advantageous from a noise production standpoint. Test results show that while there are not large variations among types of drills, there are still some choices that could produce a positive effect on overall noise exposure. It is also shown that lower noise exposures are possible using larger drills because of higher production rates and better operator positioning.
Keywords
Acoustic-measurement; Noise-reduction; Underground-mining; Sound-intensity; Coal-mining; Rock-drilling; Percussive-drills; Sound-pressure; Noise-pollution; Mineral-industries; Noise-pollution-and-control
Publication Date
19940101
Document Type
Report of Investigations
Fiscal Year
1994
NTIS Accession No.
PB95-147526
NTIS Price
A03
Identifying No.
RI-9524
NIOSH Division
PRC
Source Name
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 9524
State
PA
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