Unplanned roof fall @ xc #6, entry #2, station #750, 7-L travelroad. Fall occurred in an intersection. 4-way, supported with 7' TR bolts, 12"" cable bolts, 100 ton heintzmann jacks + bars. Fall dimensions - 25 ft. long, 18 ft. wide, 12 ft. high. Fall did not cause injury, impair ventilation or entrap miners.