> there are quite a few reasons why this sort of work would never get done Doing those chimney climbs safely, with fall protection, is pretty easy these days.

> there are quite a few reasons why this sort of work would never get done Doing those chimney climbs safely, with fall protection, is pretty easy these days. It's so easy that I've seen videos of urban explorers, base jumpers, etc. using perfectly good fall protection, even while doing illegal things! Remember we're looking at a video from 1978: modern fall protection gear simply wasn't widely available back then.