MAINTENANCE MECHANIC WAS IN PROCESS OF MOVING A FURNACE INTO FIRING POSITION. AS HE WAS INSTALLING BOLTS, HE LOST HIS FOOTING AND FELL 18' FROM THE FURNACE PLATFORM TO THE GROUND. HE WAS TRANS PORTED TO E.R. BY AMBULANCE. HE SUSTAINED MULTIPULE FRACTURES AND IS STILL HOSPITALIZED, AWAITING SURGERY.