Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

NIOSHTIC-2 Publications Search

Search Results

Environmental Characterization and Mortality Experience of Attapulgite Clay Workers.

Authors
Zumwalde-RD; Ness-GO; Waxweiler-RJ
Source
NIOSH 1980 Oct:33 pages
Link
NIOSHTIC No.
00171098
Abstract
A retrospective cohort study of attapulgite (12174117) clay mill and mine workers at Engelhard Minerals and Chemicals Corporation (SIC- 1454) was carried out, and environmental samples were collected and analyzed. All men who worked for at least 1 month during 1940 through 1975 at the facility made up the cohort. The vital status of less than 6 percent of the workers had not been determined. Death certificates were obtained for most of the workers known to have died; the underlying cause of death was coded based on these certificates. General air samples, personal breathing zone air samples, and settled dust samples were analyzed for free silica (7631869) and trace metals. Particulates were subjected to electron microscope characterization. Iron (7439896) was the only trace metal found in any appreciable quantity. Free silica exposures were within the NIOSH recommended limit of 0.05mg/m3 as a time weighted average (TWA), and respirable dust concentrations were below the OSHA standard of 5mg/m3 as a TWA. The main constituent of samples was attapulgite clay. Individual attapulgite fibers ranged from 0.1 to 2.5 microns in length and 0.02 to 0.1 micron in diameter.
Keywords
NIOSH-Author; Fibrous-dusts; Airborne-particles; Particulate-dust; Mineral-dusts; Epidemiology; Mortality-rates; Humans;
CAS No.
12174-11-7; 7631-86-9; 7439-89-6;
Publication Date
19801023
Fiscal Year
1981
NTIS Accession No.
PB87-231825
NTIS Price
A04
NIOSH Division
DSHEFS;
SIC Code
1454;
Source Name
Division of Surveillance, Hazard Evaluations and Field Studies, NIOSH, U.S. Department of Health and Human Services, Cincinnati, Ohio, 33 pages, 16 references
State
OH;
TOP