A Quantitative Retrospective Exposure Assessment for Former Chrysotile Asbestos Miners and Millers from Baie Verte, NL, Canada
Abstract Despite numerous studies of asbestos workers in the epidemiologic literature, there are very few cohort studies of chrysotile asbestos miners/millers that include high-quality retrospective exposure assessments. As part of the creation of the Baie Verte Miners’ Registry in 2008, a two-dimen...
Published in: | Annals of Work Exposures and Health |
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Online Access: | http://dx.doi.org/10.1093/annweh/wxaa092 http://academic.oup.com/annweh/article-pdf/65/1/113/35747849/wxaa092.pdf |
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croxfordunivpr:10.1093/annweh/wxaa092 2023-09-26T15:16:19+02:00 A Quantitative Retrospective Exposure Assessment for Former Chrysotile Asbestos Miners and Millers from Baie Verte, NL, Canada Giles Murphy, Tina Bornstein, Stephen Oudyk, John Demers, Paul A Industrial Research and Innovation Funds Research & Development Corporation of Newfoundland and Labrador Canadian Institutes of Health Research 2020 http://dx.doi.org/10.1093/annweh/wxaa092 http://academic.oup.com/annweh/article-pdf/65/1/113/35747849/wxaa092.pdf en eng Oxford University Press (OUP) https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model Annals of Work Exposures and Health volume 65, issue 1, page 113-126 ISSN 2398-7308 2398-7316 Public Health, Environmental and Occupational Health journal-article 2020 croxfordunivpr https://doi.org/10.1093/annweh/wxaa092 2023-08-25T11:34:27Z Abstract Despite numerous studies of asbestos workers in the epidemiologic literature, there are very few cohort studies of chrysotile asbestos miners/millers that include high-quality retrospective exposure assessments. As part of the creation of the Baie Verte Miners’ Registry in 2008, a two-dimensional job exposure matrix (JEM) was developed for estimating asbestos exposures for former chrysotile asbestos miners/millers. Industrial hygiene data collected between 1963 and 1994 were analysed to assess validity for use in a retrospective exposure assessment and epidemiologic study. Registered former employees were divided into 52 exposure groups (EGs) based on job title and department and mean asbestos concentrations were calculated for each EG. The resulting exposure estimates were linked to individual registrants’ work histories allowing for the calculation of cumulative asbestos exposure for each registrant. The distribution of exposure for most EGs (82.6%) could be described as fitting a log-normal distribution, although variability within some EGs (55%) exceeded a geometric standard deviation (GSD) of 2.5. Overall, the data used to create EGs in the development of the JEM were deemed to be of adequate quality for estimating cumulative asbestos exposures for the former employees of the Baie Verte asbestos mine/mill. The variability between workers in the same job was often high and is an important factor to be considered when using estimates of cumulative asbestos exposure to adjudicate compensation claims. The exposures experienced in this cohort were comparable to those of other chrysotile asbestos miners/millers cohorts, specifically Italian and Québec cohorts. Article in Journal/Newspaper Baie Verte Oxford University Press (via Crossref) Canada Verte ENVELOPE(141.192,141.192,-66.740,-66.740) Baie Verte ENVELOPE(-56.182,-56.182,49.933,49.933) Annals of Work Exposures and Health 65 1 113 126 |
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Open Polar |
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Oxford University Press (via Crossref) |
op_collection_id |
croxfordunivpr |
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English |
topic |
Public Health, Environmental and Occupational Health |
spellingShingle |
Public Health, Environmental and Occupational Health Giles Murphy, Tina Bornstein, Stephen Oudyk, John Demers, Paul A A Quantitative Retrospective Exposure Assessment for Former Chrysotile Asbestos Miners and Millers from Baie Verte, NL, Canada |
topic_facet |
Public Health, Environmental and Occupational Health |
description |
Abstract Despite numerous studies of asbestos workers in the epidemiologic literature, there are very few cohort studies of chrysotile asbestos miners/millers that include high-quality retrospective exposure assessments. As part of the creation of the Baie Verte Miners’ Registry in 2008, a two-dimensional job exposure matrix (JEM) was developed for estimating asbestos exposures for former chrysotile asbestos miners/millers. Industrial hygiene data collected between 1963 and 1994 were analysed to assess validity for use in a retrospective exposure assessment and epidemiologic study. Registered former employees were divided into 52 exposure groups (EGs) based on job title and department and mean asbestos concentrations were calculated for each EG. The resulting exposure estimates were linked to individual registrants’ work histories allowing for the calculation of cumulative asbestos exposure for each registrant. The distribution of exposure for most EGs (82.6%) could be described as fitting a log-normal distribution, although variability within some EGs (55%) exceeded a geometric standard deviation (GSD) of 2.5. Overall, the data used to create EGs in the development of the JEM were deemed to be of adequate quality for estimating cumulative asbestos exposures for the former employees of the Baie Verte asbestos mine/mill. The variability between workers in the same job was often high and is an important factor to be considered when using estimates of cumulative asbestos exposure to adjudicate compensation claims. The exposures experienced in this cohort were comparable to those of other chrysotile asbestos miners/millers cohorts, specifically Italian and Québec cohorts. |
author2 |
Industrial Research and Innovation Funds Research & Development Corporation of Newfoundland and Labrador Canadian Institutes of Health Research |
format |
Article in Journal/Newspaper |
author |
Giles Murphy, Tina Bornstein, Stephen Oudyk, John Demers, Paul A |
author_facet |
Giles Murphy, Tina Bornstein, Stephen Oudyk, John Demers, Paul A |
author_sort |
Giles Murphy, Tina |
title |
A Quantitative Retrospective Exposure Assessment for Former Chrysotile Asbestos Miners and Millers from Baie Verte, NL, Canada |
title_short |
A Quantitative Retrospective Exposure Assessment for Former Chrysotile Asbestos Miners and Millers from Baie Verte, NL, Canada |
title_full |
A Quantitative Retrospective Exposure Assessment for Former Chrysotile Asbestos Miners and Millers from Baie Verte, NL, Canada |
title_fullStr |
A Quantitative Retrospective Exposure Assessment for Former Chrysotile Asbestos Miners and Millers from Baie Verte, NL, Canada |
title_full_unstemmed |
A Quantitative Retrospective Exposure Assessment for Former Chrysotile Asbestos Miners and Millers from Baie Verte, NL, Canada |
title_sort |
quantitative retrospective exposure assessment for former chrysotile asbestos miners and millers from baie verte, nl, canada |
publisher |
Oxford University Press (OUP) |
publishDate |
2020 |
url |
http://dx.doi.org/10.1093/annweh/wxaa092 http://academic.oup.com/annweh/article-pdf/65/1/113/35747849/wxaa092.pdf |
long_lat |
ENVELOPE(141.192,141.192,-66.740,-66.740) ENVELOPE(-56.182,-56.182,49.933,49.933) |
geographic |
Canada Verte Baie Verte |
geographic_facet |
Canada Verte Baie Verte |
genre |
Baie Verte |
genre_facet |
Baie Verte |
op_source |
Annals of Work Exposures and Health volume 65, issue 1, page 113-126 ISSN 2398-7308 2398-7316 |
op_rights |
https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model |
op_doi |
https://doi.org/10.1093/annweh/wxaa092 |
container_title |
Annals of Work Exposures and Health |
container_volume |
65 |
container_issue |
1 |
container_start_page |
113 |
op_container_end_page |
126 |
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1778137490189713408 |