HANDTOOLS (NONPOWERED) at Buckingham Slate Company LLC
Employee was lifting up a piece of slate with a chisel to put a shim under it. Employee was holding the shim incorrectly with EE's thumb on top, and EE's other fingers on the bottom. The rock slipped out from the chisel and it fell on top of the block which then cut off part of the thumb and cut EE's middle finger.
U.S. Mine Safety and Health Administration