Phyllosilicate mineral.
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It came back the next day positive for chrysotile white asbestos.
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Seven-week-old rats were exposed, nose only, for 1 hour to chrysotile asbestos fibers.
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Canada is the world's fifth largest exporter of chrysotile asbestos.
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In samples weighing less than a gram, the lab said it found six chrysotile asbestos fibers.
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Inhaled chrysotile asbestos fibers have been shown to deposit initially on the first alveolar duct bifurcations.
1
Seven-week-old rats were exposed, nose only, for 1 hour to chrysotile asbestos fibers.
2
Canada is the world's fifth largest exporter of chrysotile asbestos.
3
In samples weighing less than a gram, the lab said it found six chrysotile asbestos fibers.
4
Inhaled chrysotile asbestos fibers have been shown to deposit initially on the first alveolar duct bifurcations.
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In Canada, companies mine chrysotile asbestos, which the asbestos industry says can be used safely under controlled conditions.