In the 6th left Butt in rooms #17 to 18 200' inby #2823 spad. There was a roof fall between #17 and #18 room. Fall was 6' to 10' high, 18' wide and 30' long. Area was bolted with 6' fully grouted rods. This was in a transitioned roof area. There is some slick and slide rock in fall.