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

Occupational exposures to talcs containing asbestiform minerals.

Authors
Dement-JM; Zumwalde-RD
Source
Dusts and Disease, Proceedings of the Conference on Occupational Exposures to Fibrous and Particulate Dust and their Extension into the Environment, Sponsored by the Society for Occupational and Environmental Health and U.S. Mine Safety and Health Administration; R. Lemen, and J. M. Dement, editors, Park Forest South, Illinois, Pathofox Publisher, Inc. 1979 Jan; :287-305
Link
NIOSHTIC No.
00096325
Abstract
Worker exposures to asbestiform minerals were studied in a talc mining and milling facility in New York State. In addition, mineralogical examinations of talcs produced at the facility were performed. Personal air samples were collected from the breathing zone of miners and millers to determine time weighted average exposures to respirable dust, free silica (7631869), and mineral fibers. Talc samples contained 37 to 59 percent anthophyllite (17068789) and 10 to 15 percent serpentines. Free silica ranged from less than 0.25 percent to 2.6 percent. Calcite (16389881) and dolomite were also present in trace amounts. The highest time weighted average free silica exposure was 0.020 milligrams per cubic meter. Time weighted average exposures to fibers longer than 5 micrometers in length ranged from 0.8 to 9.8 fibers per cubic centimeter in the mine, and 0.2 to 16.0 fibers per cubic centimeter in the mill. Seventeen of 24 job categories had time weighted average exposures exceeding the current OSHA standard of 2.0 fibers per cubic centimeter, and all jobs exceeded the proposed OSHA standard of 0.5 fibers per cubic centimeters. In the mine, concentrations of asbestiform minerals ranged from 9.5 to 17.5 fibers per cubic centimeter and concentrations in the mill ranged from 9.9 to 70.6 fibers per cubic centimeter. The authors recommend that exposures to these materials be subjected to all provisions of the OSHA asbestos standard, and that warning labels be placed on all products made from asbestiform materials.
Keywords
Dust-exposure; Fibrous-dusts; Fibrous-bodies; Measurement-methods; Sampling; Detection; Detection-equipment; Monitors; Air-sampling; Asbestos-dust;
CAS No.
7631-86-9; 17068-78-9; 16389-88-1;
Publication Date
19790101
Document Type
Conference/Symposia Proceedings
Editors
Lemen-R; Dement-JM
Fiscal Year
1979
NTIS Accession No.
NTIS Price
ISBN No.
0930376080
NIOSH Division
DSHEFS
Source Name
Dusts and Disease, Proceedings of the Conference on Occupational Exposures to Fibrous and Particulate Dust and their Extension into the Environment, Sponsored by the Society for Occupational and Environmental Health and U.S. Mine Safety and Health Administration; R. Lemen, and J. M. Dement, editors, Park Forest South, Illinois, Pathofox Publisher, Inc.
State
NY; IL; OH
TOP