Re: Don't try this at home...
As regards exposure to asbestos based pipe lagging and the like, i heard first hand of two men who worked alongside each other breathing in the same stuff for many years. One died of related disease and the other (as of 10 years ago, ie when i last heard) was unaffected. I wonder if it may be the case that there are people who are more prone than others. (It would be surprising to me if this extended to vulnerability to liver damage though..)
One thing about lab. testing of suspect samples is the difficult nature of the assessment. Occasionally the decision has to be made that the material under scrutiny MIGHT include fibre so the site is treated as such. Great emphasis is made that the lab assessors need a lot of practice to become proficient...and even at that point there is no shame in getting a second or third opinion on a tricky sample. It's a total minefield.
Dave
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