A ROOF FALL OCCURRE DON THE 1L4W AT CORSS CUT 8-9 IN ENTRY #6. THE CAUSE OF THE FALL WAS WEAK LAMINATED ROOF SHLAE. THIS FALL IDD AFFECT MOVEMENT OF PEOPLE OFF OF MMU 004. IT BLOCKED THE PRIMA RY ESCAPEWAY. PRODUCTION WAS HALTED ON THE SECTION AS SOON AS REPORTED AND ACTION WAS TKANE TO W/D PERSONNEL FROM THE AFFECTED AREA. STEPS WERE THEN TAKEN TO CLEAN UP THE FALL RE-SUPPORT THE