A ROOF FALL OCCURRED IN THE #4 ENTRY OF THE MAINS AT 324 BREAK. THE FALL MEASURED 6' HIGH BY 40' LONG BY 20' WIDE. THIS WAS DISCOVERED SAT MORNING AROUND 9:00 AM. THE EXACT TIME OF THE FALL IS UNDETERMINED. THE FALL IS 43 BREAKS OUT BY 001 SECTION BETWEEN NO. 2592 AND 2608.