AT APPROX. 7:00 PM IN THE ROOMS TO THE RIGHT OF THE K MAINS IN THE NO.3 ROOM NEAR SPAD 10326 AN UNINTENTIONAL ROOF FALL OCCURRED, AT APPROX.9:20PM THIS FALL CONTINUED, TO CREATE A FALL THAT ME ASURED 220'LONG, 18'WIDE & 14'HIGH. THIS FALL ENCOMPASSED 2 CROSSCUTS & THE ENTRY CONNECTING THESE 2 CROSSCUTS.