afaik the earliest record of asbestos use was in ancient Greece were they actually made table clothes out of it , when it became stained or dirty they put it on a fire & than shook em out (asbestosis ingreece 2000 years ago ?)
It should also be noted that asbestos was also used in certain artex finishes !!!!
used for the manufacture of roof tanks/ cisterns , plenty still out there , toilet cisterns , guttering , soil pipes, roofing sheets
used in the manufacture of vinyl floor tiles ect ect
wives of certain tradesman have contracted asbestosis by shaking out there husbands over all's/ work clothes prior to putting them in a washing machine
there husbands had come into contact with asbestos in there work place.
there is or was a fella in the CC forum who was diagnosed with asbestosis. I know of at least 6 people that have died from the disease & 3 people that have been diagnosed with it
any one thinking about fiddeling around with certain older boilers needs to tread a careful path , there is a published list (afaik) of boilers known to have been manufactured with asbestos.
blue asbestos (the worst) was used in powder form in some twin wall flue pipes as insulation