Report of Investigations: Relationship of Mineral Habit to Size Characteristics for Tremolite Cleavage Fragments and Fibers

Details

• Personal Author:
  Campbell, William J. ; Eisner, Michael H. ; Steel, Eric B. ; Virta, Robert L.
• Corporate Authors:
  United States. Bureau of Mines
• Description:
  This Bureau of Mines report describes a study conducted to determine the relationship of mineral habit to particle size and shape characteristics for prismatic, acicular, fibrous, and asbestiform varieties of tremolite. Particle measurements were made with the petrographic microscope at x 1,250 and the scanning electron microscope at magnifications up to x 10,000. All of the varieties of tremolite, upon wiley milling, produced a significant percentage of particles that meet the federal regulatory criteria for counting as asbestos fibers. However, only the asbestiform variety gave milled particles that fell into a size range of >10 um in length and <0.5 Um in width; some medical scientists consider this range significant for production of adverse health effects. [Description provided by NIOSH]
• Subjects:
  Minerals Mining Occupational Health Safety
• Series:
  Mining Publications
• Subseries:
  Report of Investigations
• ISSN:
  1066-5552 (print)
• Publisher:
  United States. Bureau of Mines
• Document Type:
  Text
• Genre:
  Case Report
• Rights:
  Public Domain
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  AVRC - Avondale Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  26 pdf pages
• NIOSHTIC Number:
  nn:10007953
• NTIS Accession Number:
  PB-300364
• Citation:
  NTIS: PB 300 364 :18 pages
• Federal Fiscal Year:
  1979
• Peer Reviewed:
  False
• Source Full Name:
  NTIS: PB 300 364
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:3ecc8c72760197b74b066fe2c587b29e1cc7e460a5704847146c82e74900a857a9d793cbbfff5afca1e8834e464be3941465064756404563deec1a1afda9a5ea
• Download URL:
  https://stacks.cdc.gov/view/cdc/201893/cdc_201893_DS1.pdf
• File Type:
  [PDF - 1.69 MB ]