National Technical Reports Library

The National Technical Information Service acquires, indexes, abstracts, and archives the largest collection of U.S. government-sponsored technical reports in existence. The NTRL offers online, free and open access to these authenticated government technical reports. Technical reports and documents in its repository may be available online for free either from the issuing federal agency, the U.S. Government Publishing Office’s Federal Digital System website, or through search engines.

Details

NIOSH (National Institute for Occupational Safety and Health) Comments to DOL (Department of Labor) on the Occupational Safety and Health Administration's Final Rule on Occupational Exposure to Asbestos, Tremolite, Anthophyllite, and Actinolite.

PB90130048

Publication Date	1986
Page Count	6
Abstract	The comment 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. The 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 chrysotile (12001295), crocidolite (12001284), and fibrous cummingtonite-grunerite including amosite (12172735), fibrous tremolite (14567738), fibrous actinolite (13768008), and fibrous anthophylite (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 anthophylite was insufficient and therefore the nonfibrous forms of these minerals were excluded from the asbestos definition.
Keywords	Asbestos Standards Regulations Industrial medicine Government policies Hazardous materials Exposure Airborne wastes Toxic substances Occupational safety and health Air pollutants CAS 1332-21-4 CAS 12001-29-5 CAS 12001-28-4 CAS 12172-73-5 CAS 14567-73-8 CAS 13768-00-8 CAS 17068-78-9 Testimony
Source Agency	National Institute for Occupational Safety and Health
NTIS Subject Category	57U - Public Health & Industrial Medicine 57Y - Toxicology 68G - Environmental Health & Safety 68A - Air Pollution & Control 94D - Job Environment 41I - Job Environment
Corporate Authors	National Inst. for Occupational Safety and Health, Rockville, MD.
Document Type	Technical Report
NTIS Issue Number	199005

NIOSH (National Institute for Occupational Safety and Health) Comments to DOL (Department of Labor) on the Occupational Safety and Health Administration's Final Rule on Occupational Exposure to Asbestos, Tremolite, Anthophyllite, and Actinolite.

NIOSH (National Institute for Occupational Safety and Health) Comments to DOL (Department of Labor) on the Occupational Safety and Health Administration's Final Rule on Occupational Exposure to Asbestos, Tremolite, Anthophyllite, and Actinolite.
PB90130048

Publication Date	1986
Page Count	6
Abstract	The comment 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. The 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 chrysotile (12001295), crocidolite (12001284), and fibrous cummingtonite-grunerite including amosite (12172735), fibrous tremolite (14567738), fibrous actinolite (13768008), and fibrous anthophylite (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 anthophylite was insufficient and therefore the nonfibrous forms of these minerals were excluded from the asbestos definition.
Keywords	Asbestos Standards Regulations Industrial medicine Government policies Hazardous materials Exposure Airborne wastes Toxic substances Occupational safety and health Air pollutants CAS 1332-21-4 CAS 12001-29-5 CAS 12001-28-4 CAS 12172-73-5 CAS 14567-73-8 CAS 13768-00-8 CAS 17068-78-9 Testimony
Source Agency	National Institute for Occupational Safety and Health
NTIS Subject Category	57U - Public Health & Industrial Medicine 57Y - Toxicology 68G - Environmental Health & Safety 68A - Air Pollution & Control 94D - Job Environment 41I - Job Environment
Corporate Authors	National Inst. for Occupational Safety and Health, Rockville, MD.
Document Type	Technical Report
NTIS Issue Number	199005