On 3/9/2012 at approximately 6:05 pm a roof fall was discovered in an in-active area of the old 2 East Mains. This area is not required to be traveled. The fall was breakered off on all approaches. The fall did not effect travel of ventilation.Continuation 4/27/12 fall extends to Entry#7 and now meas. approx. 20' W. X 130' L. x 6' thick. Has been breakered off on all approaches.