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HHE Determination Report No. HHE-80-105-110, Lehigh Portland Cement Company, Mason City, Iowa, Mine I.D. No. 13-3095.
Morgantown, WV: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, HHE 80-105-110, 1980 Aug; :1-16
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
Field Studies; Health Hazard Evaluation
NTIS Accession No.
National Institute for Occupational Safety and Health
Page last reviewed: April 12, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division