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

NIOSH Testimony on Occupational Exposure to Asbestos, Tremolite, Anthophyllite, and Actinolite by J. D. Millar, July 17, 1986.

Authors
NIOSH
Source
NIOSH 1986 Jul:1 pages
Link
NIOSHTIC No.
00190674
Abstract
This testimony restated the definition currently in place at NIOSH for asbestos (1332214). Concern had arisen following the issuance of an internal memorandum by Mr. Robert Glenn who was director of the Division of Respiratory Disease Studies at NIOSH. This memorandum did not change the position of NIOSH concerning the definition of asbestos as it concerns regulatory purposes. The definition remained as follows. Asbestos is defined to be chrysolite (12001295), crocidolite (12001284), and fibrous cummingtonite-grunerite including amosite (12172735), fibrous tremolite (14567738), fibrous actinolite (13768008), and fibrous anthophyllite (17068789). The fibrosity of the above minerals is ascertained on a microscopic level with fibers defined as being particles with an aspect ratio of 3 to 1 or larger. At present the evidence documenting a health effect from exposure to nonfibrous cummingtonite-grunerite including amosite, fibrous tremolite, fibrous actinolite, and fibrous anthophyllite was insufficient and therefore the nonfibrous forms of these minerals were excluded from the asbestos definition.
Keywords
NIOSH-Author; NIOSH-Testimony; Millar-J-D; Asbestos-workers; Occupational-exposure; Airborne-fibers; Fibrous-dusts;
CAS No.
1332-21-4; 12001-29-5; 12001-28-4; 12172-73-5; 14567-73-8; 13768-00-8; 17068-78-9;
Publication Date
19860717
Document Type
Testimony;
Fiscal Year
1986
NTIS Accession No.
PB90-130048
NTIS Price
A01
NIOSH Division
DRDS;
Source Name
NIOSH, 1 page
State
ME;
TOP