HANDTOOLS (NONPOWERED) at Homestake Mining Company of California
He was tightening a 2"" valve and steel pipe into a 2"" plastic fitting with a pipe wrench on top of a concrete hopper. A glue joint in the plastic fittings failed. The pushing action carried the pipe wrench forward and into the 1/8"" steel of the hopper. The action of the pipe wrench caught the employee's little finger on his left hand.
U.S. Mine Safety and Health Administration