An unintentional roof fall was discovered on the #2 West mains in the #5 entry at #23 brk at spad #9780. Size estimated to be (5'H x 18-20'W x 80'L). Area had been supported with 4' fully grouted resin bolts with supplemental support consisting of 10' cable bolts. Fall will not be cleaned up. No injuries, no equipment caught, ventilation was not interrupted.