Prevalence of radiographic small opacities in vermiculite miners.

Details

• Personal Author:
  Amandus HE
• Description:
  A letter relating to a recent study by the author, and others, on the radiological findings of vermiculite miners exposed to tremolite (14567738) fibers was presented. The study had described the relationship between cumulative exposure to the fibers and the prevalence of radiographic small opacities in miners. A reference had been made, as part of the comparison, to a study of Louisiana asbestos (1332214) cement workers, in which progression of radiographic small opacities was estimated. The author suggests that a better reference would have been to another study on asbestos cement workers in which the prevalence of small or rounded opacities, in relation to the number of particles per cubic foot month, was reported. A comparison of these results to those of the previous study by the author showed that the slope of the exposure response relationship was much higher for vermiculite miners than for the asbestos cement workers. The author concludes that the tremolite actinolite (13768008) fibers which contaminate Libby ore result in a greater risk for small radiographic opacities than the chrysotile (12001295) fibers in asbestos cement. [Description provided by NIOSH]
• Subjects:
  Asbestos Dust Lung Lung Diseases Mining Occupational Exposure Occupational Health Radiography Respiratory System Respiratory Tract Diseases Safety

  More +
• Keywords:
  Asbestos-mining Fibrous-dusts Lung-lesions Mineral-dusts NIOSH-Author Occupational-exposure Radiographic-analysis
• ISSN:
  0271-3586
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  Louisiana ; OSHA Region 3 ; OSHA Region 6 ; West Virginia
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  DRDS - Division of Respiratory Disease Studies
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  227-228
• Volume:
  12
• Issue:
  2
• NIOSHTIC Number:
  nn:00173213
• Citation:
  Am J Ind Med 1987 Aug; 12(2):227-228
• Contact Point Address:
  Harlan E. Amandus, PhD, National Institute for Occupational Safety and Health, Morgantown, WV 26505
• CAS Registry Number:
  Actinolite (Ca2[(Mg0.5-0.89Fe0.11-0.5)4.5-5Al0-0.5](Si7.5-8Al0-0.5)(OH)2O22) (CAS RN 12172-67-7) ; Asbestos (CAS RN 1332-21-4) ; Chrysotile (CAS RN 12001-29-5) ; Tremolite (Ca2[(Mg0.9-1Fe0-0.1)4.5-5Al0-0.5](Si7.5-8Al0-0.5)(OH)2O22) (CAS RN 14567-73-8)
• Federal Fiscal Year:
  1987
• Peer Reviewed:
  False
• Source Full Name:
  American Journal of Industrial Medicine
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:8bf704035539bf16fbdba7917eec3cec8fbc24a1ea25779f4c27022d11d8fd152c035d7bbbd061813a5ac53f971c00dd3afeca9797d197bd95e42cb6b36df604
• Download URL:
  https://stacks.cdc.gov/view/cdc/185283/cdc_185283_DS1.pdf
• File Type:
  [PDF - 73.68 KB ]