HETA, Report No. TA-76-100, ASARCO East Helena, Montana.
Meyer-CR; Schutte-R; Lowry-L
NIOSH 1977 Oct:13 pages
A Hazard Evaluation and Technical Assistance investigation was performed by NIOSH on February 1-4, 1977, at ASARCO, East Helena, Montana, a facility engaged in lead smelting (SIC-3341). The survey was prompted by a request from the Regional OSHA Director in reference to exposure to excessive amounts of inorganic lead (7439921) of the approximately 250 employees. Medical interviews and physical examination of a sample of 31 employees lead to the conclusion that a hazard potentially existed as the time of survey. Several workers had blood lead values exceeding 60 micrograms per deciliter. In addition about 50 percent of the workers had free erythrocyte protoporphyrin (553128) levels higher than expected from their corresponding blood lead levels. Since the presence of protoporphyrin is more a measure of past rather than current exposure, this finding suggests that blood levels in the recent past (about 4 months) were substantially higher than those recorded during the survey. A mandatory respiratory program started about 3 months prior to the NIOSH study could account for the differences. Recommendations for improving environmental, working and sanitary conditions are outlined.
NIOSH-Author; NIOSH-Technical-Assistance-Report; TA-76-100; Hazard-Confirmed; Region-8; Toxicology; Occupational-health; Industrial-hygiene; Air-quality-measurement; Heavy-metals; Lead-poisoning; Blood-disorders; Metal-poisoning; Respiratory-protection; Safety-measures; Lead-production;
Hazard Evaluation and Technical Assistance; Field Studies
NTIS Accession No.
Hazard Evaluation Services Branch, NIOSH, Cincinnati, Ohio, Report No. TA-76-100, 13 pages, 3 references