Yep some people have very little respect for grinders, and tools in general........... amazes me how often on TV you see guys using grinders both bench and angle without any eye / face protection.... a boiler maker i worked with on a mine about 5 yrs ago told me he was working with a bloke in a very confined space and the bloke was using a cut off disc for lopping off some light steel, the needed to grind the edge off a piece of fixed steel at head height, instead of changing the disc, he used the cut off disc for a quick grind, the cut off disc blew apart and the poor bugger copped a piece of it in the throat, the bloke i worked with basically held on to him trying to stop the bleeding, he reckons the poor bugger bled out and died with in minutes before any help could get to them......... and this can happen to anyone.