A RIGHT TO LEFT SEQUENCE OF PILLARING WAS BEING USED. WHILE MINING THE LAST LIFT OF A PILLAR FROM THE NO.5 ENTRY OF 6-LEFT OFF 1 EAST, A PILLAR FALL RODE ACROSS THE MOBILE ROOF SUPPORTS INTO THE INTERSECTION (1 BREAK INBY SURVEY STATION 1190). FALL MEASURED 20'WIDE X 40'LONG X 12' HIGH. FALL WILL BE CLEANED UP FOR RECOVERY OF THE MOBILE ROOF SUPPORTS. THERE WERE NO INJURIES.