A ROOF FALL OCCURRED IN THE #1 ENTRY OF 21 BUTT LONGWALL PANEL BETWEEN #30 AND #31 CROSSCUTS (16+00). THE FALL WAS 12FT.LONG X 15FT. HIGH X 16FT. WIDE. NO INJURIES AND NO PROPERTY DAMAGE. AREA SUPPORTED WITH 6FT. HITECH BOLTS, ADDITIONAL 12FT. BOLTS, DYWI DAG SLING, ROOT SCREEN.