AN UNINTENTIONAL ROOF FALL OCCURRED IN OLD WORKS AREA IN RETURN ENTRY AT #21 BREAK. 1,860 FEET FROM ACTIVE FACE. THE FALL MEASURED 35'L X 20'W X 4 1/2' H. ALL ENTRANCES TO THE FALL HAVE BEEN B REAKERED OFF. THIS AREA WILL NOT BE REHABILITATED. FALL WAS INVESTIGATED BY MSHA INSPECTOR.