An unintentional roof fall occurred at the Millenium Portal, at the 5N Longwall headgate between entries 2, 3, and 4 at crosscut 53. 4518N. The fall was approx 100' long, approx 18' wide and approx 12-15' thick. The fall did not affect ventilation or passage of people. The fall will not be cleaned up. Fall #22F.