FALL OF ROOF OR BACK at Red Bone Mining Company
#90 crosscut 3-2 and straight of #3 Roof Fall in Primary Escape way. The fall is approximately 70' long, 5' high, and 17' wide. All approaches to the fall area were immediately timbered, and the escape way was rerouted. The fall will not be cleaned up.
U.S. Mine Safety and Health Administration