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Hazard evaluation and technical assistance report: TA-76-100, ASARCO East Helena, Montana.

Authors
Meyer-CR; Schutte-R; Lowry-L
Source
Cincinnati, OH: U.S. Department of Health, Education, and Welfare, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, TA 76-100, 1977 Oct; :1-13
Link
NIOSHTIC No.
00076133
Abstract
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.
Keywords
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
CAS No.
7439-92-1; 553-12-8
Publication Date
19771001
Document Type
Field Studies; Hazard Evaluation and Technical Assistance
Fiscal Year
1978
NTIS Accession No.
PB-278840
NTIS Price
A03
Identifying No.
TA-76-100
NIOSH Division
DSHEFS
SIC Code
3341
Source Name
National Institute for Occupational Safety and Health
State
MT; OH
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