A ROOF FALL OCCURRED ON THE F2 SECTION AT 1 WALL IN THE CROSSCUT TO THE LEFT AND RIGHT OF THE #3INTERSECTION. THE FALL WAS ABOVE THE ANCHORAGE AND BLOCKED THE PASSAGE OF MEN. FALL WAS 45 FT LO NG BY 12 FT HIGH BY 15 FT WIDE. THE BELT WAS UNDER THE FALL.