A ROOF FALL OCCURRED WHILE PERFORMING SECOND MINING WHICH CAUGHT TWO OF THE FOUR MRS UNITS. THE CONTINUOUS MINING MACHINE WAS CAUGHT IN A SECONDFALL SOON THERE AFTER WHILE ATTEMPTING TO ASSIST IN RECOVERY. THE FALL WAS APPROX. 20'W,30'L,27'H. EQUIPMENT WAS RECOVERED ON 05-12-2001.