An unintentional roof fall occurred in the G-6 section #2 entry just inby x-cut 17. The fall was approx. 45' in length beginning at the intersection edge and continuing inby and tapered from 0 to 16' wide. Height at the peak is estimated to be 8-9 ft. A fault ran diagonally across the entry with the edge of the fall being at the slickenside of the fault.