A ROOF FALL OCCURRED IN THE NO. 1 L/W ""F"" PANEL TAILGATE ENTRY DURING RETREAT MINING. EGRESS WAS BLOCKED OFF THE TAILGATE TRAVELWAY AND THE EGRESS PLAN WAS IMMEDIATELY IMPLEMENTED, THE ROOF FA ILUR WAS 27' L X 21' W X 4-10' H. THE FAILURE OCCURRED 22' INBY SPAD 13027. THE TAILGATE HAD BEEN SUPPORTED WITH A DOUBLE ROW OF CRIBS ON 15' CENTERS. NO PERSONS INJURED. NO PROPERTY DAMAGE O