Document xzqO1QJJk8VwnpX5aq4YnmKJ6

1 as toxic as these other types. Page 1767 2 I have read from a couple of people that I 3 respect that crocidolite may be two to three times 4 more toxic than chrysotile. 5 Q Have you had the opinion that tremolite, as 6 a contaminant of chrysotile, can cause mesothelioma? 7 A That has been a debate, but I don't think 8 that is the case. Tremolite when it contaminates 9 chrysotile makes up usually 1 percent of the total, 10 and there is some data that tremolite doesn't always 11 contaminate chrysotile and I think that is pretty well 12 proven right now. 13 If you look at the total amount of asbestos 14 dust that, say, the Quebec miners and millers breathe 15 into the lung, most of it is going to be chrysotile. 16 A very small percentage is going to be 17 tremolite. Personally I don't think it is the 18 contaminating tremolite that causes the mesothelioma 19 in those individuals. 20 Does it contribute? Sure, it can contribute 21 just like any other asbestos can contribute.