3 EE'S WERE WORKING ON AN ELEVATED CONVEYOR WITHOUT FALL PROTECTION. THEY WERE ABOUT 10.6' OFF THE GROUND. EE LOST HIS FOOTING AND FELL OVER BACKWARDS. HE LANDED ON HIS HEAD AND RT. WRIST. EE WAS TAKEN TO THE HOSPITAL BY A COMP. TRUCK. EE HAS A FRACTURED NECK & A BROKEN RIGHT WRIST.