Seeing that sort of endeavour brings me out in a cold sweat.
I know that this is thread drift, but it reminded me of
Fred Dibnah, a steeplejack from Bolton, Lancashire, who was featured in a number of TV series in the late 1970s and early 1980s.
Watch him erect scaffolding at the top of a 200' chimney with no safety precautions of any description. I remember him saying that if he made a mistake in similar circumstances it was 'half a day out with the undertaker'.
Frightening.