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Health hazard evaluation report: HETA-81-036-1023, Alaska Smelting and Refining Company, Wisilla, Alaska.
Cincinnati, OH: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, HETA 81-036-1023, 1981 Dec; :1-17
Environmental air sampling was conducted and medical evaluations performed to determine employee exposures to lead (7439921), silver (7440224), dust, and other contaminants at the Alaska Smelting and Refining Company (SIC-3339) in Wisilla, Alaska on April 28 to May 1, 1981. Management requested the evaluation on behalf of two workers. Four of six 12 hour breathing zone air samples exceeded the NIOSH standard for lead of 50 micrograms per cubic meter and ranged from 5 to 295 micrograms per cubic meter. Five of seven 12 hour breathing zone samples and one 2 hour sample exceeded the American Conference of Governmental Industrial Hygienists standard for silver of 10 micrograms per cubic meter. All iron-oxide fume, nitric-acid (7697372), nitrogen-dioxide (10102440), sulfur-dioxide (7446095), and sulfuric-acid (7664939) concentrations were substantially below the applicable evaluation criteria. Blood lead and free erythrocyte protoporphyrin results were all within acceptable limits. The author concludes that a health hazard due to lead and silver existed at this facility. He recommends the use of local ventilation systems, use of respirators, appropriate cleanup procedures, and medical monitoring of exposed workers.
NIOSH-Author; HETA-81-036-1023; NIOSH-Health-Hazard-Evaluation; Hazards-Confirmed; Region-10; Health-surveys; Heavy-metals; Hematology; NIOSH-Technical-Assistance-Report; Author Keywords: Primary Smelting & Refining of Nonferrous Metal; Secondary Smelting & Refining of Nonferrous Metal; Lead; nitric acid; nitrogen dioxide; silver; sulfur dioxide; sulfuric acid
7439-92-1; 7440-22-4; 7697-37-2; 10102-44-0; 7446-09-5; 7664-93-9
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