AN UNINTENTIONAL ROOF FALL OCCURRED AT THE NO.6 SEAM MINE AT THE 1 EAST LONGWALL TAILGATE ENTRY #4 AT 6722 EAST. THE FALL WAS OF UNKNOWN LENGTH, APPROX. 18 1/2'WIDE & OF UNKNOWN THICKNESS. THE FALL DID NOT AFFECT VENTILATION. THE FALL WILL NOT BE CLEANED UP.