A ROUND WAS BLASTED IN 195 S2 STOPE @ 5:00 AM. MINERS RETURNED TO THE STOPE AT 9:30 AM AND DISCOVERED A GROUND FALL 20 FT BACK FROM THE FACE. THE WEDGE FAILURE WAS APPROX 70 FT LONG - 8 FT WID E AND 10 FT HIGH WITH AN APEX GREATER THAN 16 FT. THE GROUND FAILED BEYOND THE EXTENT OF THE GROUND SUPPORT IN THE AREA.