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
The comment restated the definition currently in place at NIOSH for asbestos. 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, crocidolite, and fibrous cummingtonite-grunerite including amosite, fibrous tremolite, fibrous actinolite, and fibrous anthophylite. 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.
- Research Organization:
- National Inst. for Occupational Safety and Health, Rockville, MD (USA)
- OSTI ID:
- 7166034
- Report Number(s):
- PB-90-130048/XAB
- Country of Publication:
- United States
- Language:
- English
Similar Records
NIOSH testimony to DOL on the Occupational Safety and Health Administration's notice of proposed rulemaking on occupational exposure to asbestos, tremolite, anthophyllite, and actinolite
NIOSH comments to DOL on the Occupational Safety and Health Administration's notice of proposed rulemaking on occupational exposure to asbestos, tremolite, anthophyllite, and actinolite
Related Subjects
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
ASBESTOS
OCCUPATIONAL EXPOSURE
POLLUTION REGULATIONS
HAZARDOUS MATERIALS
SILICATE MINERALS
NIOSH
US OSHA
FIBERS
GOVERNMENT POLICIES
INDUSTRIAL MEDICINE
OCCUPATIONAL SAFETY
POLLUTANTS
STANDARDS
TOXIC MATERIALS
MATERIALS
MEDICINE
MINERALS
NATIONAL ORGANIZATIONS
REGULATIONS
SAFETY
US DOL
US ORGANIZATIONS
540120* - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)
552000 - Public Health