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HHE determination report no. HHE-74-9-174, Wheeling Pittsburgh Steel Company, Steubenville, Ohio.
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 74-9-174, 1975 Feb; :1-10
Examination of the working condition at a steel mill (SIC-3325) revealed that dust containing free silica (7631869) is potentially toxic to blast furnace workers and to personnel working in the stockhouse area. This determination is based upon air concentration levels of total dust containing free silica up to four times the Federal Standard for blast furnace workers and up to twenty eight times the Federal Standard for larry car operators in the stockhouse as well as criteria concerning the toxic effects of free silica. It has also been determined that potentially toxic exposures did not exist on the day of evaluation to the crane operator in the stripper building from exposure to iron-oxide (1317619) fume, carbon-monoxide (630080), and free silica or to maintenance workers in the 44 inch soaking pit area from exposure to sulfur-dioxide (7446095) and carbon-monoxide. Detectable levels of carbon-monoxide, sulfur- dioxide, and iron-oxide fume were not measured while the free silica level was less than 0.4 of the Federal Standard.
NIOSH-Author; NIOSH-Health-Hazard-Evaluation; HHE-74-9-174; Region-5; Hazard-Confirmed; Air-quality-measurement; Dust-sampling; Dust-analysis; Silica-dusts; Dust-control; Primary-metallurgical-processes; Exposure-limits; Toxic-gases; Air-contamination; Toxicology; Steelmaking; Legislation; Author Keywords: dust; silica; blast furnace; stockhouse; iron oxide; carbon monoxide; CO; sulfur dioxide; SO2
7631-86-9; 1317-61-9; 630-08-0; 7446-09-5
Field Studies; Hazard Evaluation and Technical Assistance
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