My old farmhouse still has white asbestos siding/shingles. My grandfather put them up around the 1950's. He died of lung cancer in 1969/1970. I was wondering where it came from, and what makes it so carcinogenic...And if they knew of the side effects of asbestos as early as the 1920's, why did they still permit it to be manufactured?? Anybody know about this?
Orignal From: How was asbestos made, how is it carcinogenic?
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