ON 1/29-02, A UNITENTIONAL ROOF FALL OCCURRED IN THE NO.4 INTAKE ENTRY 60' INBY THE MAIN MINE FAN. THE FALL OCCURRED DUE TO SUBNORMAL CONDITIONS ABOVE THE 48"" RESIN ROOF BOLTS THE FALL MEASURE D 6' WIDE X 14' LONG X 3 1/2' THICK. THE FALL EFFECTED THE PASSAGE OF MEN BUT DID NOT AFFECT VENTILATION OR GIVE PERSONAL INJURY.