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Report of an Industrial Hygiene Survey of Sand and Gravel Crusher, Dworshak Dam, in Orofino, Idaho.

Authors
Curtis-EH
Source
NIOSH 1968 Jul:16 pages
Link
NIOSHTIC No.
00106155
Abstract
Potential dust and noise hazards were evaluated in the work environment at the Dworshak Dam (SIC-3281) in Orofino, Idaho, during and industrial hygiene survey on June 12 to 14 1968. The survey was requested by the District Engineer, Walla Walla District, U.S. Army Corps of Engineers. The percentage of free silica (7631869) in dust samples was 20 to 20.3 and respirable airborne dust concentrations ranged from 0 to 5.9 milligrams per cubic meter (mg/m3). Noise levels ranged from 101 to 105 decibels. The author concludes that a health hazard existed. He recommends engineering controls, improved ventilation to reduce dust exposures to below 0.5mg/m3, and the use of hearing protective devices for workers exposed to high noise levels.
Keywords
NIOSH-Author; NIOSH-Survey; Field-Study; IWS-30-24; Region-10; Silicates; Air-contamination; Industrial-noise; Health-hazards; Workplace-studies; Dust-sampling; Respirable-dust; Pulmonary-system-disorders; Environmental-engineering; Occupational-exposure;
CAS No.
7631-86-9;
Publication Date
19680701
Fiscal Year
1968
NTIS Accession No.
NTIS Price
Identifying No.
IWS-30-24
NIOSH Division
DFSCI;
Priority Area
Pulmonary-system-disorders
SIC Code
3281;
Source Name
U.S. Public Health Service, Occupational Health Program, Occupational Health Field Station, Salt Lake City, Utah, 16 pages
State
ID; UT;
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