THE ABOVE MINE HAS EXPERINECE A NONINJURY UNINTENTI9ONAL ROOF FALL ON MMU 012-0 SUBMAINS. NICHOLS SUBNMAINS BUT OFF. THE FALL WAS OFF THE SECTION 3 XCUTS OUTBY THE DEEPEST PENETRATION OF NICHO LS SUBMAINS IN #2 ENTRY. THE FALL IS APPROX. 50'LONG, 20' WIDE, AND 3-6' THICK. LAMINATED SLATE AND SANDSTONE GAVE WAY. THE AREA HAD BEEN SUPPORTED WITH 4 AND 5' FULLY GROUTED RODS. NO DAMAGE