INJURED WAS SHOVELING ON BELT LINE. HE COMPLETED THE SHOVELING AND WAS GOING TO GO TO TRACK. INJURED WENT THROUGH A MAN DOOR. HE STEPPED ON AN OLD PIECE OF BELTING CAUSING HIS FOOT TO SLIP. IN JURED DID NOT REQUEST MEDICAL TREATMENT UNTIL 8-20-01 & RECEIVED TREATMENT ON SAME DAY.