A rock fall was found and reported to to MSHA. The rock fall or roof fall occured on the mmu 001-0 section. The roof fall is in the n% 5 entry 1 brk. Inby survey station 4143. The roof fall is at brk n%9 in the intersection. Roof fall is approx. 6'-7' thick, 16'-18'long and from 3' to 7' thick. Fall dangered and timbered or cribbed