Not the rocket engine, nor the high powered amplifiers, or even the band saw can beat the Neodymium magnets as the most dangerous thing in the shop. Regardless of how careful we handle them you always get bit one way or another.
I went to get the magnets to put them back on the MHD generator. Each set was wrapped in three inches of bubble wrap then double wrapped in woven nylon bags then put in a box of packing peanuts. They had been in this box for about a week. All the while the pair had been slowly popping the bubble wrap and inching closer together. When the bubble wrap was gone they started compressing the plastic into a thin film. When I opened the box instead of finding two magnets six inches apart I found one solid block separated by 1/32 inch smear of plastic.
Two vices, four large plastic wedges, a pry bar and hour and a half later they were separated once again ready for mounting on the generator.