AN UNINTENTIONAL ROOF FALL OCCURRED IN THE #4 ENTRY (BELT) ONE BREAK OUT BY SDAD #7197: SIZE OF FALL WAS ESTIMATED TO BE 25' WIDE BY 25' L BY 6-8' H (INTERSECTION) AREA HAD BEEN SUPPORTED WI TH 4' FULLY GROUTED RESIN BOLTS. NO INJURIES OCCURED, VENTILATION WAS NOT INTERRUPTED BELT LINE WAS CAUGHT. FALL WAS CLEANED UP.