An unintentional roof fall occurred at spad #16+36 on the 4th submain east, #mmu-002-0, #2 unit, #1 entry in return. The intersection had been previously cribbed out due to a slip condition, the adjacent crosscut fell riding over the cribbed intersection. The area was approx. 20'in length, 60'wide & 10-15'in height. The fall will be cleaned up at a later date.