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Industrial hygiene survey of the Great Western Limestone Mine Crushing and Screening Mill in Horse Creek, Wyoming.
Salt Lake City, UT: U.S. Department of Health, Education, and Welfare, Public Health Service, Health Services and Mental Health Administration, National Institute for Occupational Safety and Health, IWS 30-27, 1970 Feb; :1-116
Noise levels were measured and air and dust samples were analyzed for free silica and respirable airborne dusts during an industrial hygiene survey of the Great Western Limestone Mine Crushing and Screening Mill (SIC-3281) in Horse Creek, Wyoming during February 1970. Respirable dust concentrations ranged from 0.3 to 0.9 milligrams per cubic millimeters and the percentage of free silica ranged from 82 to 113 decibels. The authors conclude that airborne dust concentrations did not present a health hazard but upper respiratory tract discomfort and irritation could be alleviated by the use of respirators. They note that hearing loss hazards existed, and recommend the use of suitable hearing protective devices.
NIOSH-Author; NIOSH-Survey; Field-Study; IWS-30-27; Region-8; Silicates; Air-contamination; Noise-levels; Industrial-hygiene; Respirable-dust; Protective-equipment; Hearing-impairment; Occupational-exposure
Field Studies; Industry Wide
NTIS Accession No.
National Institute for Occupational Safety and Health
Page last reviewed: June 18, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division