HANDTOOLS (NONPOWERED) at Tower Rock Stone Company
Miner was helping to free lumpy material from a hopper chute by hitting the side of the hopper with a 4# hammer. He managed to get a finger between the hammer handle and the side of the hopper. This resulted in a right index finger contusion as well as a nondisplaced fracture of the distal phalanx.
U.S. Mine Safety and Health Administration