Exposures and mortality among chrysotile asbestos workers. Part I: exposure estimates.

Published

Journal Article

A detailed study of plant processes and dust control methods over the period 1930-1975 was conducted in an asbestos textile plant processing chrysotile. Linear statistical models for reconstructing historic dust exposure levels, taking into account textile processes, dust control measures, and job assignments, were developed. Parameters of these statistical models were estimated using 5,952 industrial hygiene sampling measurements covering the period 1930-1975. For most textile operations, exposure levels were significantly reduced by about 1940, when most engineering dust control measures were in place. Results of the exposure estimates indicated "precontrol" exposure levels to range from 3 to 78 fibers/cc with typical levels well above 10 fibers/cc. After textile operations were provided with dust control measures, estimated exposure levels ranged from 3 to 17 fibers/cc and were usually in the range of 5 to 10 fibers/cc. These exposure estimates were combined with an assessment of mortality among workers at this plant to investigate exposure-response relationships. Exposure-response results are presented in the companion manuscript in this volume.

Full Text

Duke Authors

Cited Authors

  • Dement, JM; Harris, RL; Symons, MJ; Shy, CM

Published Date

  • 1983

Published In

Volume / Issue

  • 4 / 3

Start / End Page

  • 399 - 419

PubMed ID

  • 6846338

Pubmed Central ID

  • 6846338

International Standard Serial Number (ISSN)

  • 0271-3586

Digital Object Identifier (DOI)

  • 10.1002/ajim.4700040303

Language

  • eng

Conference Location

  • United States