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Health hazard evaluation report: HETA-88-390-2148, American Salt Company, Lyons, Kansas.
Cincinnati, OH: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, HETA 88-390-2148, 1991 Oct; :1-32
In response to a request from the project director of the International Chemical Workers Union, a study was undertaken of worker exposure to asbestos (1332214) and diesel emissions at the American Salt Company (SIC-1479) mine and mill, Lyons, Kansas. There were no detectable airborne asbestos exposures, but asbestos was identified in settled dust and bulk samples. The only detectable overexposure was to nitrogen-dioxide (10102440) (NO2). Five passive dosimeters analyzed for NO2 indicated full shift exposure levels ranging from 0.71 to 1.4 parts per million (ppm). Five coal-tar pitch volatile samples analyzed for benzene soluble fraction were below detectable levels. Carbon-monoxide (630080) was detected but was well below any hazardous levels. Forty seven employees participated in a medical study. Only two of these 47 worked underground. Radiographic evidence of pneumoconiosis was nonexistent among these employees. Four employees demonstrated mild obstruction on pulmonary function tests while one demonstrated severe obstruction and two had mild restriction of lung volume. The authors conclude that overexposures to NO2 existed during the survey. The authors recommend measures to minimize exposure to diesel exhaust, and control asbestos in settled dust. A followup medical study is recommended.
NIOSH-Author; NIOSH-Health-Hazard-Evaluation; NIOSH-Technical-Assistance-Report; HETA-88-390-2148; Hazard-Confirmed; Region-7; Combustion-products; Mining-industry; Underground-mining; Miners; Respiratory-system-disorders; Lung-function; Toxic-gases; Occupational-exposure;
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National Institute for Occupational Safety and Health
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