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Results of air samples at Johns-Manville, Long-Beach, California, and Stockton, California.
Cincinnati, OH: 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 32-43a, 1968 Jul; :1-17
Worker exposures to asbestos (1332214) were surveyed in June, 1967, at the Johns-Manville Corporation (SIC-3292) Long Beach and Stockton facilities in California. Numerous impinger and membrane filter samples were collected from the Long Beach insulation and asbestos cement pipe factories and from the Stockton pipe factory. One sample from each site exceeded the threshold limit value of 5 million particles per cubic foot (mppcf) measured by the impinger method. Two samples from Stockton, 11 from the Long Beach pipe factory and 7 from the insulation factory exceeded the proposed standard of 2mppcf.
NIOSH-Author; NIOSH-Survey; Field-Study; Region-9; Air-contamination; Standards; Tolerance-threshold; Insulation-materials; Asbestos-products; Air-sampling; Control-methods; IWS-32-43a
Field Studies; Industry Wide
National Institute for Occupational Safety and Health
Page last reviewed: May 5, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division