ON 1/5/2000, A FALL OF GROUND WAS DISCOVERED AT 26 INCLINE ABOVE THE 6650. THE AREA WAS BEING REHABBED. A SECTION 10' X 20' X 6' FELL. THE GROUND FELL BEYOND THE 5' BOLTS. ABOUT 80-100 TONS FE LL. THE FALL WAS DISCOVERED BY THE ON COMING SHIFT. NO INJURIES.