AN UNPLANNED ROOF FALL OCCURRED MEASURING APPROX. 125' X 24' X 20'. THE FALL OCCURRED FROM FOOTAGE MARK 1850 INBY THE FACE. THE AREA WAS INITIALLY BOLTED WITH 5&6 TORQUE TENSION BOLTS, 8""&14"" CABLE BOLTS, TRUSS BOLTS W/ 10' LEGS, AND SCREEN MESH INSTALLED W/ 4' RESIN BOLTS. NO EQUIP. INVOLVED & PASSAGE OF PERSONS NOT AFFECTED. THE FALL WILL BE CLEANED UP.