WHILE WALKING UP THE LONGWALL FACE INDIVIDUAL CAUGHT FOOT ON SMALL WASH DOWN HOSE TWISTING RIGHT KNEE. RECEIVED NO TREATMENT. ON 12/22/00 SAW DOCTOR FOR X-RAYS DUE TO CONTINUED PAIN, DIAGNOSIS SPRAIN. ON 4/11/01 INDIVIDUAL SAW DOCTOR AGAIN NOW HAS SUSPECTED LIGAMENT TEAR. SCHEDULED FOR SURGERY ON 4/23/01.