A rock fall was found approx. 12:40 pm in the #1 main return, in #1 entry between brk. 48-49 in the secondary escapeway, the fall was approx. 100' long & 8' thick, the area has been dangered & timbered off, the secondary escapeway has been re-routed to the #3 entry, #4 return, brk. 3. A meeting was held with all employee's on changed with the secondary escapeway.