A FALL OF THE ROOF OCCURRED ON #4 UNIT, #6 ENTRY ACROSS FROM THE FEEDER 40' OUTBY SPAD #30565 IN THE 4TH NE PANEL. THE FALL WAS 130'LONG, 20'WIDE, AND 5'THICK. NO VENTILATION OR PERSONELL WERE AFFECTED. THE FALL LANDED ON THE BACK OF A THREE-WHEELER.