Industrial roofing.
When I was younger, I used to work as an industrial roofer. It involved carrying sheets of metal about on roofs in all types of weather. Every roofer I've met had their tales of 'the day they had a lucky escape'. Mine wasn't as lucky as I'd hoped.

One day, it started raining, so we decided to pack up for the day. Carrying the last sheet back to the pile, the guy at the top carrying most of the weight overbalanced and sent me flying backwards towards the safety scaffolding. I hit the barriers at such speed my body pushed itself though the tiniest of gaps.... there's a few missing seconds here... then I woke up on the floor in agony.

The Health and Safety report afterwards said that I'd hit a scaffold pole one floor down slowing myself down with my face, then landed on my back on the second floor, before landing on the side of a pile of rubble on the ground.

The lucky escape wasn't the fact that I didn't fall, more the fact I got away with such light injuries (broken cheek and tail bone) from falling almost 40 foot.
(Unit, Sat 21 Aug 2010, 4:59, Reply)