EMPLOYEE RESPONDING TO LOW SODIUM FAULT ALARM. THIS USUALLY MEANS THE ROTARY FEEDER HAS STOPPED. WHEN HE ARRIVED AT ROTARY- IT WAS STOPPED. HE STUCK HIS HAND IN TO CLEAR IT OUT, AS HE WAS CLEARING FEEDER OUT, THE FEEDER ENGAGED AND CAUGHT HIS RIGHT HAND (3 FINGERS). CALLED FOR HELP ON RADIO- POWER WAS TURNED OFF AND HE WAS FREED FROM FEEDER BY 2 EMPLOYEES. FRACTURE OF 1F