Yeah, worked there too - many an afternoon on the roof sitting in the sun playing 500 while the leading hand yelled at us from the bottom of the stairs because he couldn't climb them (due to a skydiving accident) and the lift didn't go to the roof. :D
We'd all scarper off to the other end and down the other exit and be back at the workshop before he could get there. Used to **** him off no end....
SEC - Slow Easy Comfortable
Those were the days. :D

