A FALL OF ROOF OCCURED ON THE #1 UNIT SUBMAIN WEST, 1 X-CUT OUTBY SPAD #1844 #4 ENTRY APPROX. 25' LONG, 19' WIDE 12' THICK. THE FALL WAS A INTERSECTION AND IT FELL ON HALF OF THE UNIT FEEDER & PART OF A SHUTTLE CAR. IT WAS BOLTED WITH 6' PINS(GLUE) AND 10' & 12' POINT ANCHOR BOLTS(MEGA BOLTS)