HHE Determination Report No. HHE-80-105-110, Lehigh Portland Cement Company, Mason City, Iowa, Mine I.D. No. 13-3095.
NIOSH 1980 Aug:16 pages
Worker exposures to sulfur-dioxide (7446095) (SO2), sulfite (SO3), sulfate (SO4) and sulfuric-acid (7664939) (H2SO4) were surveyed on March 25 and 26, 1980, at Lehigh Portland Cement Company (SIC-3241) in Mason City, Iowa. The evaluation was requested by the United Cement, Limestone and Gypsum Workers, Local 106, on behalf of approximately 200 production workers. Personal and area air samples were collected for analysis. Time weighted average exposures to SO2 and H2SO4 were below OSHA standards of 5 parts per million (ppm) and 1 milligram per cubic meter, respectively. Short term SO2 exposures reached 10 to 40ppm due to gas leaks on top of the bag house. Concentrations of SO3 and SO4 were below hazardous limits. The author concludes that no persistent SO2 hazard exists at this company, but short term, high level exposures could aggravate preexisting health conditions. Recommendations are included for provision of medical surveillance and use of respirators.
NIOSH-Author; HHE-80-105-110; NIOSH-Health-Hazard-Evaluation; Hazards-Unconfirmed; Region-7; Cement-industry; Health-surveys; Air-sampling; Worker-health; Industrial-hygiene;
Hazard Evaluation and Technical Assistance; Field Studies
NTIS Accession No.
NIOSH, U.S. Department of Health and Human Services, Morgantown, West Virginia, 16 pages, 3 references