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Pneumatic rock drill noise can be reduced.

Authors
Jensen-JW; Visnapuu-A
Source
Noise Control Eng 1975 Mar; 4(2):54-63
NIOSHTIC No.
10009585
Abstract
Noise reductions of more than 15 dba were obtained by modifying several features of a pneumatic rock drill of the type used in mining industries. Features described include a special drill- covering case with integral mufflers, substitute damping alloy components that replaced drill parts, and constrained-layer dampers applied to the steel drill rod. Data on operating noise levels and drill performance obtained in laboratory and field tests show the noise-reduction effectiveness of various modifications and the effects of the modifications on drill performance.
Keywords
Mining-industry; Noise; Noise-control; Noise-shields; Noise-shielding; Noise-sources; Engineering-controls; Control-technology
CODEN
NCEGAR
Publication Date
19750301
Document Type
OP; Journal Article
Fiscal Year
1975
NTIS Accession No.
NTIS Price
Identifying No.
OP 56-75
Issue of Publication
2
ISSN
0093-9978
NIOSH Division
RORC
Source Name
Noise Control Engineering
State
MO
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