A ROOF FALL OCCURRED IN THE #2 ENTRY OF 1 WEST SECTION. THE ENTRY 10 A RETURN AIRWAY. THE FALL IS LOCATION 1 BRK INVY STA. #18811. VENTILATION WAS NOT INTERRUPTED. NO PERSONS WERE INJURED. THE FALL IS 30' LONG, 18' WIDE, AND 5' HIGH. THE AREAR WAS BOLTED WITH 4' RESIN BOLTS. THE FALL WIOL NOT BE CLEANED UP. ALOL APPROACHES WERE TIMBERED OFF.