I worked in a meat shop at a large hypermarket. We got a new meat mower, large with a bunker of a hundred kilos. And the bunker was closed with a grid, the grid lay on the locking button of the rope. At first, everyone followed the rules: he threw meat, closed the bunker with a grid, turned on the unit. Until one beautiful day, when the worker decided to speed up the process and wrapped the locking button with an insulator so that it was possible not to close the bunker grid. He throws the meat, sees that the piece left on the wall of the bunker decided to fix it with his hand. The result - the man has no arm on the elbow, and then lucky that the foot hit the emergency stop button.