A SECTION OF THE HIGHWALL OVER THE NO.3 (INTAKE)ENTRY FELL ON AND CRUSHED THE CANOPY AT THE MOUTH OF THE PORTAL AND FELL BACK INTO THE ENTRY APPROX. 15 FEET. THE SECTION OF HIGHWALL THAT FELL MEASURED APPROX. 15-20 FEET LONG BY 15-20 FEET THICK BY 16-18 FEET WIDE. THE ROOF JUST INBY THE PORTAL HAD BEEN BOLTED WITH 48' & 60"" RESIN ROOF BOLTS.