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Concentric Drill Steels for Noise Reduction of Percussion Drilling.

Authors
Stein-RR; Aljoe-WW
Source
Ch in "Progress in Noise Control Inter-noise 86 " 1986 :333-336
Link
NIOSHTIC No.
10005076
Abstract
This paper describes the design and test results of a prototype concentric drill steel used to reduce noise in large drills. Operational advantages of concentric vs. Conventional steel, and the problems in coupling performance, are also discussed.
Publication Date
19860101
Document Type
OP;
Fiscal Year
1986
NTIS Accession No.
NTIS Price
Identifying No.
OP 136-86
NIOSH Division
PRC;
Source Name
Ch. in "Progress in Noise Control. Inter-noise 86," 1986, PP. 333- 336
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