THE EE WAS WORKING ON HIS KNEES BESIDE OF THE CONTINUOUS MINER, SERVICING THE MACHINE. HE PICKED UP A 5 GAL CANOF OIL TO MOVE IT TO HIS OTHER SIDE AND HIS KNEE SLIPPED IN THE MUD CAUSING HIM T O TWIST HIS LEFT KNEE. THE EE WORK WITH NO RESTRICTIONS UNTIL 6-27-01 AT WHICH TIME A SPECIALIST PLACED HIM ON RESTRICTED DUTY.