Roof fall in the intake escape way inby No.4 belt drive, modified to restore power to No.4 Drive & to support both sides of the fall. Fall 8'-12' thick occurred at survey station 133 #4 intake entry #2 northwest mains. Roof is supported with 72' point anchor pattern bolts, 8' super bolts & 10' able bolts. Fall dangered off work, travel , power & airflow has been redirected.