An unintentional roof occurred in all three approaches to the Cut-Thru EP. The fall is located inby spad 12370 in the no 1 entry, spad 12371 in the no 2 entry, and inby 12368 in the no 3 entry. No injuries occurred, escape ways & ventilation were not affected by the fall. The fall measured 20 feet wide X 7 feet high. The operator was unable to determine the length of the fall.