I, personally, have spoken about this subject at length. At the risk of actually repeating myself, I'd like to defer you to go back to the Forum's Main Page (which is where you see your post), and use your browser's FIND feature, and search for the word asbestos. There are a couple of unrelated posts about asbestos pipe-wrapping and asbestos in vinly flooring glue but if you keep looking (and look for my personal Follow-ups), I talk about your specific question at various lengths. Do take the time to peruse all the related posts and follow-ups as, again, they're mixed in with other asbestos, non-related posts.
My best to ya and hope this helps. If it doesn't, post again with what it is you'd like to know more of. (Bad English to end a sentence w/a preposition, I know.) ;-)