A ROOF FALL WAS FOUND AT APPROXIMATELY 8:30 PM ON THE 1ST NORTH MAIN BELT BETWEEN SPADS 17+50 & 18+20. THE FALL WAS LOCATED IN THE #6 ENTRY. THE TIME OF THE FALL IS UNKNOWN. THE FALL WAS FOUND DURING THE EARLY TUESDAY NIGHT PRESHIFT. THERE WERE NO INJURIES DUE TO THE ROCKFALL.