EMPLOYEE WAS REMOVING THE P-2 CHAIN FROM THE FEEDER WHEN A CO-WORKER PULLED THE WASH DOWN HOSE OFF THE TOP OF THE FEEDER. THE HOSE CAUSED AN UNBOLTED SHIELD TO FALL STRIKING HIM ON THE NECK. H E WAS TAKEN TO THE HOSPITAL AND DIAGNOSED WITH DAMAGE TO THE NECK MUSCLE. HE IS SCHEDULED TO UNDERGO THERAPY.