An unplanned roof fall occurred in the #5 entry of 1 Rt. Rooms 1 x-cut outby survey station #668. Fall was approximately 25' long, 19' wide, 4' plus high. Area was bolted with 4' tension rebar bolts with 6' tension rebar bolts spotted through the area along with straps. Did not affect any equipment, ventilation or travelway. Fall will not be cleaned up.