chrysotile


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chrysotile

/chryso·tile/ (kris´o-tīl) the most widely used form of asbestos, a gray-green magnesium silicate in the serpentine class of asbestos; its dust may cause asbestosis or, rarely, mesotheliomas or other lung cancers.
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Sumas Mountain chrysotile induces greater lung fibrosis in Fischer 344 rats than Libby amphibole, El Dorado tremolite, and Ontario ferroactinolite.
In a previous round in this debate, a delegation from importing countries lobbied the Canadians over the export of chrysotile asbestos, arguing that many Asian countries have poor or non-existent asbestos regulations in workplaces, and those that exist are poorly enforced (Kirby 2010).
Although 87% of homes contained asbestos-contaminated VAI and 39% of the homes contained other ACM, chrysotile asbestos (associated with ACM) was the primary type of asbestos detected in living space air and surface samples.
L'annonce recente par le gouvernement nouvellement elu du Quebec du retrait de sa garantie de pret a la mine d'amiante Jeffrey et l'annonce subsequente par le gouvernement federal de l'abandon de son objection a l'inclusion de l'amiante chrysotile dans la Convention de Rotterdam des Nations Unies constituent une grande victoire pour la sante publique.
These observations are similar to those reported by Churg and Vedal (15) in a study of workers with heavy mixed amosite and chrysotile exposure.
Microstructures of Chrysotile and Antigorite by High-Resolution Electron Microscopy," Can.
However, amphibole fibres stay much longer in the lungs than chrysotile fibres and they are more likely to inflict damage and cause disease, including cancer, states Health Canada's website.
Chrysotile is often a tight tubular spiral, but it may fracture longitudinally into tiny fibrils.
Canada had argued that the ban was disproportionate because France could achieve its public health goals through "controlled use" of chrysotile asbestos.
Samples taken of debris were found to contain 2 percent chrysotile asbestos, the most common type of asbestos.
Amphibole as well as chrysotile asbestos may be present.
AAM is one of the largest mining companies in Zimbabwe and the third largest exporter of chrysotile asbestos fibre in the world.