A CONT MINING MACHINE WAS BEING USED TO MINE PILLARS ON THE MMU 001, A SOUTH PANEL. THE SECOND PILLAR CUT OUT OF THE NO.5 ENTRY. A PILLAR FELL AND CAUGHT THE MACHINE. THE FALL MEASURED APPROX 30' LONG BY 20' WIDE BY 44' THICK. A RETRIEVER WAS USED TO RECOVER THE MINING MACHINE.