EE WAS USING AN OVERHEAD HOIST TO LOWER MIDDLE DECK DISCHARGE CHUTE. THE HOIST WAS HOOKED ON A PAD EYE THAT WAS WELDED ON. THE PAD EYE BROKE AND CAME STRAIGHT UP. THE HOIST HOOK KNOCKED HIS HA RD HAT OFF ON THE WAY UP AND HIT HIS HEAD ON THE WAY DOWN. HE RECEIVED FIVE STAPLES AS A RESULT OF THE INCIDENT.