OPERATOR WAS APPROACHING LOADER, DUCKED UNDER LAND CONVEYOR & RAISED HIS HEAD PREMATURELY & HIT HIS HEAD. SAID NECK WAS SORE. WENT TO HOSPITAL & DID NOT RETURN. HE HAD WEEKS VACATION. WHEN HE RET'D TO WORK HE SAID NECK WAS STILL SORE. WE SENT HIM TO DR & HE WAS PLACED ON LIGHT DUTY 8/17/04.