Low-Level Fiber-induced Radiographic Changes Caused by Libby Vermiculite
نویسندگان
چکیده
منابع مشابه
Radiographic abnormalities and exposure to asbestos-contaminated vermiculite in the community of Libby, Montana, USA.
Mining, handling, processing, and personal or commercial use of asbestos-contaminated vermiculite have led to widespread contamination of the Libby, Montana, area. We initiated a medical testing program in response to reports of respiratory illness in the community. The purpose of this analysis was to identify and quantify asbestos-related radiographic abnormalities among persons exposed to ver...
متن کاملRadiographic Evidence of Nonoccupational Asbestos Exposure from Processing Libby Vermiculite in Minneapolis, Minnesota
BACKGROUND Community exposure to asbestos from contaminated vermiculite ore from Libby, Montana, occurred in many processing sites in the United States, including a densely populated urban residential neighborhood of Minneapolis, Minnesota. OBJECTIVE We examined exposed community residents who never worked at the plant or never lived with a plant worker for radiographic evidence of lung chang...
متن کاملMesothelioma associated with commercial use of vermiculite containing Libby amphibole.
OBJECTIVES To describe asbestos-related mortality among manufacturing workers who expanded and processed Libby vermiculite that contained amphibole fiber. METHODS Standardized mortality ratio was calculated for 465 white male workers 31 years after last Libby vermiculite exposure. RESULTS Two workers died from mesothelioma, resulting in a significantly increased standardized mortality ratio...
متن کاملMineralogy and Cation Exchange Properties of Libby Vermiculite Separates as Affected by Particle-size Reduction*
-A vermiculite (Libby, Montana) sample obtained from the Zonolite company contained mostly coarse-grained separates with only 8.7 per cent clay. The 2-50 #m fraction was used for particle-size reduction studies by wet and dry grinding, and size-fractionated into < 2, 2-5, 5-20 and 20--50 #m sizes. About 18 per cent of the sample was attrited to clay after 64 hr of wet grinding, but as much as 5...
متن کاملAmphibole-asbestos, Vermiculite Mining and Libby, Montana: What’s in a Name?
Introduction: Over the past year, tremoliteasbestos and vermiculite mining in Libby, Montana have gone from obscurity to the forefront of the national media. The Seattle Post-Intelligencer “broke” the story in November 1999 about the world’s largest vermiculite mine and the problems associated with its asbestos exposure. As the stories point out, several hundred miners, their families, and non-...
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ژورنال
عنوان ژورنال: American Journal of Respiratory and Critical Care Medicine
سال: 2008
ISSN: 1073-449X,1535-4970
DOI: 10.1164/rccm.200706-841oc