Not sure how direct a cause the dust was, but I did know of such a case
in a weekend wood turner. Working as a welder of magnesium rods in a
nuclear generating facility while smoking 3 packs of bare-backed Camels
a day probably played no carcinogenic role since he was protected by a 4
in. thick asbestos blanket ....

Gee it is great to have you back Arch!