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Results of Air Samples at H. K. Porter, Huntington, Indiana.
NIOSH 1968 May:6-6
Worker exposures to asbestos (1332214) were surveyed at the H. K. Porter Company in Huntington, Indiana, in November, 1966. Sampling was performed using impinger and membrane filter methods. Breathing ranged from 0.4 to 19.5 million particles per cubic foot (mppcf). General air samples collected with the impinger contained 0.1 to 2.7mppcf. Membrane filter samples with fibers greater than 5 microns in length for breathing zone areas ranged from 0.8 to 28.5 fibers per cubic centimeter (f/cc), while membrane filter general area samples contained 1.8 to 9.0f/cc. Personal air samples contained up to 27.4f/cc. The threshold limit value of 5mppcf as measured by the impinger method was exceeded in a few areas of the facility.
NIOSH-Author; NIOSH-Survey; Field-Study; Region-5; Mineral-dusts; Air-sampling; Airborne-dusts; Standards; Workplace-studies; Air-quality; IWS-32-37b;
NIOSH, Division of Field Studies and Clinical Investigations, Environmental Investigations Branch, Cincinnati, Ohio
Page last reviewed: September 2, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division