FALL OF ROOF OR BACK at The Monongalia County Coal Company
An unplanned roof fall was discovered in the 6 North Parallel #1 entry at 9 block. The fall was approximately 10' wide, 35' long and 6' high. The fall was most likely caused due to gradual deterioration of the mine roof. No problems with mining machines, PPE, training or compliance issues.
U.S. Mine Safety and Health Administration