EE WAS ASSISTING IN CHANGING BUCKET TEETH ON A 1370 DRAGLINE. THE SPOOLS & WEDGES HAD BEEN KNOCKED OUT OF THE TOOTH BASE & EE WAS USING A SLEDGE HAMMER TO KNOCK THE TOOTH POINT OFF. WHILE STRI KING THE TOOTH, A 3/4"" SLIVER OF METAL CAME OFF THE TOOTH EDGE & STRUCK EE. APPEARED THAT THE EDGE OF THE TOOTH AND NOT THE FLAT PART WAS STRUCK.