Firebosses were pre-shifting the mine for the midnite shift on Sunday night in 5th West entry #2 at x-cut 47-48 when they found a roof fall. It was dangered off and reported to shift foreman and MSHA. The fall was 20' wide by 75' long and approx. 8' high. A double row of timber was set at all accesses to danger the area off.