THE EMPLOYEE WAS ATTEMPTING TO TIGHTEN A CAT ON THE CONTINUOUS MINER, HE HAD HIS KNEE ON A PILE OF MINER CABLE, HISRIGHT KNEE SLID OFF THE CABLE CAUSING A SHARP PAIN TO HIS KNEE. THE EMPLOYEE WORKED WITH NO RSTRICTIONS UNTIL 9-19-00 AT WHICH TIME HE HAD SURGERY ON HIS KNEE.