An unplanned roof fall occurred in the G - Butt rooms from #1 entry to #3 entry at spad #1092 (#2) entry. Fall was approximately 18' wide, 130' long, 10' high. Area was bolted with four (4) foot and six (6) foot fully grouted bolts and with ten (10) foot cable bolts throughtout. Area was timbered and dangered off.