Rock fall in one of the neutrals about 1/3 way up #8 belt area(not in belt entry) at spad #4423. Timbered it off & made roadway around rock fall into the other neutral rock fall. Fell sometime between 2pm Sat 5-15-04 & 8pm Sun 5-16-04. Rock fall was approx 20' wide, 40"" long & from 4' to 10' high, it bolted good at the time it was mined w/4' resin bolts.