ok here is a couple of `mistakes` that i personally have made during my varied carreer.
doing a remodel of a bar in the New Forest area of Hampshire, apprentice on the first floor looking for my soon to emerge drill bit, he says " i can here it mate but cant see it" so i move it over a bit, wind the bit through the ceiling, "still cant see it", so i move it again by another inch or two.
the next thing i here is a loud scream, and the plumber comes down the stairs with his hand on his rear,
i drill into the bathroom and not the stairwell straight into his rear end!!!!
(not a very happy man)
drilling into the corner of a wall in a basement, managed to hit a 2 inch water service, before the stop valve!!
lots of water and a lot of cleaning up!
knocked a whole box of 8 foot fluorescent tubes of a tower (i was up about 20 foot) onto a new cleaned wood floor, now that was a scary one.
fell through a ceiling in a shop remodel took out a load of troffers and best part of the ceiling, broke three ribs and knocked myself out, 2 days in the hospital and a $3000.000 bill at the end of it, Insurance covered it and i still work for the client to this day.
britspark