AN UNINTENTIONAL ROOF FALL OCCURRED BETWEEN THE #6 & #7 ENTRY POND GAP MAINS, #43 BREAK, 1 BREAK OUTBY 30310. FALL MEASURED 20' LONG, 20' WIDE, 6' THICK. FALL DAMAGED OVERCAST. VENTILATION WAS TEMPORARILY RESTORED. AREA WILL BE CLEANED UP & SUPPORTED & OVERCAST WILL BE PERMANENTLY RESTORED.