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Evaluation of Wet-head Drilling Techniques.

Authors
Purvis-DG; Hagenbuch-FH
Source
NTIS: PB/264-997 Available for Reference At Bureau Libraries :69 pages
Link
NIOSHTIC No.
10001756
Abstract
This paper reports results of the wet-head drilling program, with regard to data collection and testing and evaluation of rotary and pneumatic drills. Performance of a noise-abated stopper, although extremely limited in scope, is also presented. Comparisons are made in roof of 40 to 60 shore hardness. Data include drilling rates, bit costs, dust suppression/waste removal, safety, functional limitations, and similar information. It is concluded that wet drilling is faster, quieter, and easier on the operator than stopper drilling, although on the average wet drilling requires more bits than stopper drilling.
Publication Date
19760101
Document Type
CP; Final Contract Report;
Fiscal Year
1976
NTIS Accession No.
PB-264997
NTIS Price
A05
Identifying No.
OFR 44-77
NIOSH Division
PRC;
Source Name
NTIS: PB/264-997 Available for Reference At Bureau Libraries
Performing Organization
FMC Corporation
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