AN UNINTENTIONAL ROOF FALL OCCURRED ALONG THE PILLAR LINE ON THE 005-0 ""B"" SECTION DURING SECONDMINING. FALL WAS PART OF PILLAR FALL, SIZE COULDNOT BE DETERMINED. FALL WAS INBY SUPPORTED ROOF, RIPPER HEAD OF CONTINOUS MINER WAS CAUGHT. NO INJURIES OCCURRED, VENTILATION WAS NOT INTERUPTED.