An unintentional roof fall occurred at 63 crosscut on the 4C intake escapeway at station 3+50 entry #8. The fall did not affect ventilation or cause personal injury. The fall did fall in the primary escapeway but their was 2 entries and the escapeway was rerouted to the other entry. The fall measured 25 feet x 20 feet x 6 foot high and had been bolted with 4 foot roof bolts.