Fall extended above anchorage point, reported to be up to 10 feet high and the immediate roof appeared to be laminated shale with slickensides. Fall blocked roadway and beltline. Fall occurred at No.2 Break of No.5 Belt between spads 11655 and 1507, No. 1 Entry and No.2 Entry. Dimensions: 17 to 18 feet wide and 60 to 70 feet long.