FALL OF ROOF OR BACK at Kingwood Mining Company LLC
North 3, 33 block, 4 entry, MMU 003, 4-way intersecton . 18 ft wide x 100 ft long x 12 ft high. Support: 6 ft 3/4 inch resin bolts, roof mats, cable bolts, wire screen. Fall dangered off, additional roof support installed around fall.
U.S. Mine Safety and Health Administration