Coal Mine Safety and Health Report of Investigation: Underground Coal Mine, Rib Roll Accident, June 27, 2011. Eagle No. 1 Mine, Rhino Eastern, LLC, Bolt, Raleigh County, West Virginia. ID No. 46-08758

摘要

On June 27, 2011, at approximately 1:10 a.m., Joseph Cassell, Crew Leader (Victim), was killed, after receiving crushing injuries, when a portion of the rib comprised of coal and rock, fell and struck him. The victim was in the process of cleaning the mine floor to install a wooden support timber, because of a deteriorated rib, when the accident occurred. The piece of material that fell was approximately 100 inches long, 32 inches thick, and 37 inches in height. The accident occurred one crosscut outby the loading point of the mechanized mining unit 004 (MMU-004) mining section. The accident occurred because the rib bolts installed previously in the top portion of the rib were insufficient to stabilize the rib of the entry and prevent material from falling when the mine floor was being cleaned.