A roof fall occurred in the #3 entry 100' inby survey station #18094 between 12:15 AM and 05:00 AM. The area was checked for preshift and when it was checked again for the next preshift, the fall was discovered. The fall is approximately 30' x 10' x 5'. It will not be rehabilitated. The area is timbered and dangered off. The fall was investigated by MSHA.