EE WAS BOLTING THE FACE AT #5 ENTRY. HE WAS OPERATING THE OFF SIDE OF THE DRILL. HE WENT TO THE OPERATOR SIDE TO GET A ROPE BELT AND WHEN RETURNING TO HIS SIDE, HE GOT HIS FOOT CAUGHT IN CURTA IN AND TWISTED RIGHT KNEE. THE EE CONTINUED TO WORK W/O RESTRICTIONS UNTIL 5-9. AT WHICH TIME A MEDICAL SPECIALIST REMOVED HIM FROM WORK.