A non injury roof fall occurred at approx. 9:25pm on 11/3/17. The roof fall is located in the No.4 entry intersection at x-cut No.8 on the 1 east mains. The roof fall is approx. 20' feet long x 20' feet wide x 8' feet to 10' feet thick. The roof fall is confined to the intersection at x-cut No.8 The area has been flagged and dangered off to prevent access to this area.