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Subscribe to this list via RSS Blog posts tagged in asbestos

Posted by on in Centers of Excellence
Posted on behalf of Elleen Hsu

Ms. Elleen Hsu recently presented a poster entitled “Insulation Usage and Asbestos Exposures: Historical Trends and Exposure Assessment” at the 2017 International Society of Exposure Science Meeting held in Durham, North Carolina. The purpose of this research was to identify factors that impacted the trends of historical airborne asbestos concentrations from insulation products and to model how these factors would affect human exposures. The authors found that airborne fiber concentrations measured during insulation work in shipyards were 3.5 to 15.5 times higher than concentrations measured for similar tasks in non-shipyard settings. The authors also modeled asbestos exposure estimates for full-shift insulators using task-specific frequencies and concentrations reported in the literature. Using our model, a cumulative occupational exposure for an insulator could be estimated by summing the cumulative exposure for the years of interest. Additionally, our research also found that asbestos concentrations declined over time, likely driven by the passage of the OSH Act and subsequent PEL rulings, as well as advancements in asbestos research and industrial hygiene practices.
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Posted by on in Centers of Excellence
Cardno ChemRisk scientists recently published History of Knowledge and Evolution of Occupational Health and Regulatory Aspects of Asbestos Exposure Science: 1900-1975" in the Critical Reviews in Toxicology journal.  The article provides a comprehensive review regarding the evolution of the foundation of occupational medicine and industrial hygiene knowledge with respect to asbestos and its risks from the early 1900s until the early-to-mid 1970s. In this review, we present the decisions, insights, challenges, and hallmark scientific discoveries that had the greatest impact on the historical actions of industrial hygienists in characterizing asbestos exposure and risk. 

If you have any questions or would like further information, please contact Dr. Christy Barlow at This e-mail address is being protected from spambots. You need JavaScript enabled to view it or (720) 305-5837.
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Posted by on in Centers of Excellence
Scientists at Cardno ChemRisk recently published a study titled “Anthophyllite asbestos: state of the science review” in the Journal of Applied Toxicology. The purpose of this research was to provide a comprehensive review of the toxicological, epidemiological and regulatory knowledge regarding anthophyllite and to understand how it compares to other types of asbestos. It also serves to give an overview of the available published literature on anthophyllite, including the occurrence of anthophyllite in talc and related health effects.

The authors reviewed publicly available documents on anthophyllite discussing its use, mining, properties, toxicity, exposure, and any potential health hazards. Based on their research, the authors found that:

·         Anthophyllite has been less researched than other asbestos types.

·         Anthophyllite can be found as a trace element or contaminant of other asbestos or talc deposits.

·         In studies from the 1970s and onward, it was reported that significant anthophyllite exposure in animal studies can cause asbestosis, lung cancer, and mesothelioma.

·         A study of Finnish Anthophyllite miners in the 1970s found exposure to anthophyllite caused asbestosis and lung cancer, but not mesothelioma, which was not linked with human exposure to anthophyllite until the mid-1990s.

·         Because of the lack of research on anthophyllite specifically, characterizing the health risks associated with exposure is difficult.

Overall, the authors concluded that anthophyllite may be more potent than other types of asbestos in causing asbestosis, but less potent in causing mesothelioma. However, further research is needed to fully understand the toxicity of pure anthophyllite.

The abstract of the article is available here. If you would like a full copy of the paper, or if you have any questions regarding its content, please contact Dr. Shannon Gaffney.
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Posted by on in Centers of Excellence
Mark your calendars for March 13-16, 2016, and visit us at the Society of Toxicology's 55th Annual Meeting, where our scientists will be presenting 18 posters! These posters cover a variety of topics including, ambient asbestos concentrations in the United States, the risks associated with arsenic exposure from wine consumption, and an exposure and risk assessment of lead in chocolate. Please click the links below to read our available accepted abstracts:

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Posted by on in Risk Communication

Posted on behalf of the author, Kevin Towle

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