Wow that is horrible.
I watched a guy get his fingers smashed off a couple years ago. He was lowering a set of rolls down off the machine the rolls are on hydraulic arms. The trolly that he was lowering them on was pushed in to far and not centered under the arms. When he lowered it down and unchucked the arms they slide outward. His and was on the trolly and when it unchucked it mashed his had between the arms and the trolly. I had no idea his hand was there but I saw him with the trolly to far and was like what the hell are you doing back the trolly out but it was to late the look on his face I knew something was wrong but I didn't realize how bad it was until I saw him pick up his fingers.