Caught in, under or between a moving and a stationary object
During the removal of a sheave from a pump assembly, using a block of wood as a protective buffer while applying force with a sledgehammer. EE A was holding the block of wood against the sheave while EE B struck the block with the sledgehammer. During one of the swings, EE A attempted to reposition the block of wood, & the finger was pinched/smashed between the wood and the sheave.