EE WAS REPAIRING A SUCTION LINE TO A SLURRY PUMP IN THE TIPPLE. WHILE PULLING A SECTION OF PIPE ACROSS THE CONCRETE FLOOR TO THE WORK AREA, HE SLIPPED IN WATER AND MUD THAT WAS AROUND THE SLUR RY PUMP. HE LANDED ON HIS LOWER BACK/BUTTOCK AREA. EE HAS HAD PRIOR BACK SURGERY AND WAS TAKEN TO HOSPITAL. XRAYS NEGATIVE BUT EE IS OFF WORK.