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HHE determination report no. HHE-79-30-669, CF and I Steel Corporation, Pueblo, Colorado.

Gunter BJ; Rom WN; Barkman HW
Cincinnati, OH: U.S. Department of Health, Education, and Welfare, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, HHE 79-30-669, 1980 Feb; :1-18
Employee exposures to lead (7439921), solvents, and crystalline- silica (7631869) in the galvanizing department, fence post shop, and the casting foundry at CF and I Steel Corporation, Pueblo, Colorado, were evaluated on January 25 and 26, 1979. The evaluation request came from United Steelworkers of America Local No. 2102 (SIC-3312). Breathing zone air samples were analyzed for quartz (14808607) and cristobalite (14464461) crystalline-silicas, total respirable dust, lead, zinc (7440666), iron (7439896), chromium (7440473), total hydrocarbons, and m-xylene (108383). Medical tests included blood lead levels, free erythrocyte-protoporphyrin (FEP), zinc protoporphyrin (ZPP), hemoglobin, and a chemistry profile. Casting foundry workers received chest radiographs for the evaluation of pneumoconiosis. Thirty nine percent of the breathing zone air samples for crystalline silica exceeded the NIOSH recommended standard of 0.05 milligrams per cubic meter (mg/m3). Twenty six percent of breathing zone air samples for total respirable dust exceeded the 1979 Threshold Limit Value of 5mg/m3. Twenty seven percent of the lead samples taken in the galvanizing department exceeded the OSHA standard of 0.05mg/m3. Blood lead levels greater than 40 micrograms per 100 milliliters (micrograms/100 ml), were found in 14 workers; 4 workers had blood lead levels greater than 60 micrograms/100ml. FEP's greater than 870, were noted in 10 workers. The mean blood lead levels of workers in the galvanizing department was twice that observed in the casting foundry workers. Nineteen percent of the casting foundry workers had radiographic abnormalities, including simple pneumoconiosis, pleural changes, cardiac enlargement, and granuloma. NIOSH concluded that a health hazard existed from overexposure to lead and crystalline-silica. Recommendations from the survey included the introduction of improved ventilation, work practices and medical surveillance procedures.
NIOSH-Author; HHE-79-30-669; Region-8; NIOSH-Health-Hazard-Evaluation; Blast-furnaces; Steel-works; Rolling-mills; Hazard-Confirmed; Toxic-substances; Chemical-exposure; Measurement-methods; Industrial-hygiene; Health-hazards; Air-monitoring; Medical-monitoring; Steel-making; Industrial-emission-sources; Author Keywords: lead; crystalline silica; solvents; blood lead; free erythrocyte protoporphyrin; FEP; zinc protoporphyrin; ZPP; hemoglobin; chemistry profile; SMA-20; pneumoconiosis
7439-92-1; 7631-86-9; 14808-60-7; 14464-46-1; 7440-66-6; 7439-89-6; 7440-47-3; 108-38-3
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Field Studies; Health Hazard Evaluation
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National Institute for Occupational Safety and Health
Page last reviewed: December 11, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division