THE LAST PILLAR RUN HAD BEEN COMPLETED ON THE #2 BLOCK, ON THE 001 SECTION. THE MOBILE ROOF SUPPORTS WERE BEING MOVED TO THE CROSSCUT WHEN A PILLAR FALL OCCURRED. THE RODE OVER THE LEFT SIDE M OBILE ROOF SUPPORT AND OUTBY IT FOR APPROX. 20'. THE FALL WAS APPROX. 20' X 25' X 6' THICK.