MAG PLANT OPERATOR CAME TO WORK AT THE MAG PLANT AND DISCOVERED THE FLOOR DRAIN SUMP PUMP HAD QUIT. WET SLURRY MATERIAL WAS ALONG THE FLOOR LEADING TO THE PUMP LOCATION. AS HE WALKED TO THE PU MP HE SUDDENLY SLIPPED AND FELL LANDING WITH HIS RIGHT ARM EXTENDED CAUSING A RIGHT WRIST INJURY. LATER TREATMENT ON 7/25/03 REVEALED A WRIST FRACTURE & EE WAS PUT OFF WORK TEMPORARILY TO HEA