During the preshift exam the fireboss identified a roof fall on the 2nd Lt. Section 450 outby the face in the #5 entry. The fall measured 20'W X 100'L X10'H.The area was supported with 5'resin bolts and the intersection with 8' cable bolts. The area was dangered off and cribs set. The fall will not be cleaned up and the section will be moved.