{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,27]],"date-time":"2026-08-27T02:04:08Z","timestamp":1787796248474,"version":"build-2784847793"},"reference-count":44,"publisher":"Oxford University Press (OUP)","issue":"4","license":[{"start":{"date-parts":[[2020,2,12]],"date-time":"2020-02-12T00:00:00Z","timestamp":1581465600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/journals\/pages\/open_access\/funder_policies\/chorus\/standard_publication_model"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2020,4,30]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:sec>\n                  <jats:title>Objectives<\/jats:title>\n                  <jats:p>Talc is mined and milled throughout the world for use in a variety of industrial and consumer products. Although prior studies have evaluated workplace exposures or health effects from talc operations, the primary emphasis of these investigations has been on certain mineral contaminants (e.g. crystalline silica and asbestos) rather than talc itself. The purpose of this analysis is to evaluate historical worker exposures to respirable dust (as a measure of talc exposures) in the Vermont talc mines and mills, which involved a relatively pure form of talc (i.e. no asbestos and &amp;lt;0.25% or &amp;lt;1% crystalline silica).<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Methods<\/jats:title>\n                  <jats:p>Respirable dust sampling data collected for workers in the Vermont mines and mills, which have not been previously published, were obtained from both mining company records and Mine Safety and Health Administration (MSHA) inspections. Because of differences in sampling design, the company and MSHA data were analyzed and reported separately. Overall, nearly 700 respirable dust samples collected for 44 job categories at 7 site locations over an approximate 30-year period were analyzed.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Results<\/jats:title>\n                  <jats:p>Average respirable dust concentrations were found to exceed occupational exposure limits (OELs) in the United States and other countries for several job categories and site locations. Regardless of data source, the highest observed exposures were for mining jobs involving the operation of heavy equipment to break up, move, or load raw ore from the mines and milling or shipping jobs involving the crushing of raw ore, cleaning and drying of processed talc, and bagging and packaging of the final talc product. When analyzing the company data, the arithmetic mean respirable dust concentration was 2.73 mg m\u22123 for Muckerman at Hammondsville Mine, 3.18 mg m\u22123 for dosco operator at Ludlow mines, 1.35 mg m\u22123 for crusher operator at Gassetts Mill, 2.4 mg m\u22123 for palletizer at West Windsor Mill, and 2.68 mg m\u22123 for bagging operator at Columbia Shipping Center. When analyzing the MSHA data, the arithmetic mean respirable dust concentration was 3.5 mg m\u22123 for kiln\/dryer operator at Hammondsville Mine, 1.27 mg m\u22123 for driller at Ludlow mines, 3.69 mg m\u22123 for ball mill operator at Columbia mill, 3.02 mg m\u22123 for flotation operator at West Windsor Mill, and 3.24 mg m\u22123 for bagging operator at Columbia Shipping Center. Worker exposures were found to decline over time for many, but not all, jobs.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Conclusions<\/jats:title>\n                  <jats:p>Our findings highlight potential high-risk jobs that might benefit from additional exposure control strategies at current or future talc manufacturing sites. The respirable dust measurements summarized here may also be used to reconstruct historical worker exposures at the Vermont sites or aid in subsequent epidemiology studies of this cohort focused on malignant or non-malignant respiratory disease.<\/jats:p>\n               <\/jats:sec>","DOI":"10.1093\/annweh\/wxaa010","type":"journal-article","created":{"date-parts":[[2020,1,17]],"date-time":"2020-01-17T20:10:03Z","timestamp":1579291803000},"page":"416-429","source":"Crossref","is-referenced-by-count":10,"title":["Analysis of Historical Worker Exposures to Respirable Dust from Talc Mining and Milling Operations in Vermont"],"prefix":"10.1093","volume":"64","author":[{"given":"Alan","family":"Rossner","sequence":"first","affiliation":[{"name":"Institute for a Sustainable Environment, Clarkson University, Potsdam, NY, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pamela R D","family":"Williams","sequence":"first","affiliation":[{"name":"E Risk Sciences, LLP, Lafayette, CO, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Elayna","family":"Mellas-Hulett","sequence":"first","affiliation":[{"name":"Institute for a Sustainable Environment, Clarkson University, Potsdam, NY, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mohammad Arifur","family":"Rahman","sequence":"first","affiliation":[{"name":"Institute for a Sustainable Environment, Clarkson University, Potsdam, NY, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"286","published-online":{"date-parts":[[2020,2,12]]},"reference":[{"key":"2020043007161543000_CIT0001","first-page":"34","article-title":"Threshold limit values for chemical substances, physical agents, and biological exposure indices","author":"ACGIH","year":"1991"},{"key":"2020043007161543000_CIT0002","article-title":"Documentation of the threshold limit values and biological exposure indices, Talc","author":"ACGIH","year":"2010"},{"key":"2020043007161543000_CIT0003","doi-asserted-by":"crossref","first-page":"295","DOI":"10.1016\/S1470-2045(06)70651-9","article-title":"Carcinogenicity of carbon black, titanium dioxide, and talc","volume":"7","author":"Baan","year":"2006","journal-title":"Lancet Oncol"},{"key":"2020043007161543000_CIT0004","author":"Boehlecke","year":"2000"},{"key":"2020043007161543000_CIT0005","first-page":"335","article-title":"Occupational exposures to non-asbestiform talc in Vermont","volume-title":"Dusts and disease","author":"Boundy","year":"1979"},{"key":"2020043007161543000_CIT0006","first-page":"1049","volume-title":"Industrial minerals and rocks. 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