An unplanned roof fall occurred in #5 entry of the South Mains, 2 x-cuts inby survey station #227. Fall was approximately 18' wide, 55' long, and 4' plus high. Fall did not affect any ventilation or travelways. Area was timbered and dangered off. Area was bolted with 4' tension rebar bolts with 5 rows across. Fall will not be cleaned up.