AN UNINTENTIONAL ROOF FALL OCCURRED ON THE 1ST NORTH HEADGATE UNIT AT THE MILLENNIUM PORTAL ENTRY #2 AT 3291' NORTH. THE FALL WAS APPROXIMATELY 35' LONG, AAPROXIMATELY 18' WIDE, AND APPROXIMAT ELY 8-10' THICK. THE FALL DID NOT AFFECT VENTILATION OF PASSAGE OF MINERS. THE FALL WILL BE CLEANED UP.