UPON NORMAL TRAVEL A SMALL ROOF FALL WAS FOUND IN BETWEEN #3 AND #4 ENTRIES AT SS#6166. THE FALL OCCURRED 3 CROSSCUTS IN BY 1C BELT DRIVE THE FALL WAS APPROX 25 FT IN LENGTH BY 19 FT WIDE BY 4 1/2 FT HIGH. THERE WAS NO INJURY OR PROPERTY DAMAGE. THE FALL WAS NOT CLEANED UP.