At 11:15 a.m. EE found a rock fall in intake of North Main at BK 22. This area is a paneled started and pulled back from. Fall was from #7 intersection to #6 intersections. Approx. 110' L. X 18' W. X 6"" H. Area is 2 bks inby spad 6812. Area timbered and dangered off. Ventilation still moving and no injuries.