AN UNINTENTIONAL ROOF FALL WAS DIACOVERED BY THE SAFETY COORDINATOR WHILE CHECKING REFLECTOR IN THE RETURN ENTRY OF THE NORTH MAINS @ X-C #11. APPROX. 5 1/2' HIGH, 60' LONG & 17' WIDE. THE AREA WAS DETERIORATING PREVIOUSLY IN THAT SOME FLAKING WAS OCCURRING. THE WALKWAY WAS RE-ROUTED & WHILE AREA WAS BEING RESUPPORTED, THIS ADDITIONAL FALL OCCURRED. AREA IN PROCESS OF REHAB