A ROOF FALL AT BREAK 36 #3 MAINS, IN INTERSECTION OF #4 TO 5 HEADING WAS DISCOVERED DURING THE ONSHIFT INVESTIGATION. APPROX. 40' X 20' X 6-7' THICK FELL IN INTERSECTION. DID NOT AFFECT PASSAG E OF MEN, AIR, OR EQUIP. FALL WAS CRIBBED & DANGERED OFF. CALLED IN TO MSHA LOGAN 1-10-2000.