I just spent the last four days running a chainsaw and didn’t see one single spark...
If you keep your equipment up to par, this crap don’t happen.
Idjit!!
As I said up thread if he was cutting iron pipe for sale to a scrap yard he was more likely than not using a abrasive disc on a Chainsaw power head and they make lots and lots of pretty sparks. His stupidity comes into play if he was cutting off the vent stacks from the underground tanks...