Thats very nasty, hope hes ok!
I saw my old man get the bottom of his lip taken off when a Sthil saw blade exploded whilst cutting steel on a barn conversion job. He was lucky as it could of taken his face off.
Also saw a guy try to open a site tool box with the padlock hoop and the handle at the same time! I watched his finger roll across the top of the box and onto the floor. We all looked at each other and he was looking as if to say who the hell does that finger belong to? Didnt take him to long to find out though!