EE STRUCK HIS HEAD AGAINST THE BOTTOM OF THE LOADER FENDER WELL RESULTING IN A 4"" LACERATION REQUIRING 7 STITCHES. EE WAS CLEANING UP AFTER WELDING A PLATE TO THE BOTTOM OF THE LOADER FRAME. EE BUMPED HIS HEAD ON THE FRAME CAUSING HIS HARDHAT TO FALL UNDER THE EXPOSED FENDER WELL. EE RETRIEVED HIS HARDHAT IN HIS HAND & AS HE STRAIGHTENED UP, STRUCK HIS HEAD AGAINST FENDER.