"fibers so fine that care must be taken to avoid inhaling them"
That tiny subclause at 02:28. The other 17 minutes explain why we used it so much anyway.
I knew we used it in fireproofing boards, I had no idea it was such a miracle material and used in so many other places, and in so many different forms; cloth, cement, lubricant, ...
"Why Asbestos", by the Asbestos Information Committee, 1970
youtube.com/watch?v=IXHlQyUecMβ¦