WORKING ON LOCOMOTIVE ENGINE, PULLING CYLINDER HEAD WITH BOOM TRUCK. ACCESS/INSPECTION DOOR IS ON HINGE AND LIFTS UP. EE WAS LOOKING IN INSPECTION DOOR AS HEAD WAS BEING PULLED OUT. DOOR GOT B UMPED AND CAME DOWN, STRIKING EE'S HEAD AND CUTTINFG SCALP AND LEFT EAR. REQUIRED 19 STAPLES IN SCALP AND 5 STITCHES IN EAR.