A WELDER IN THE MAINTENANCE SERVICE SHOP USE AN IRONWORKER TO SHEAR A 3/8"" X 4"" X 6"" PIECE OF MILD STEEL PLATE. THE PLATE WASINSERTED SO THAT THE ""HOLD DOWNS"" DID NOT ENGAGE THE PLATE. UPON SH EARING, THE PLATE MOVER, PINCHING HIS RIGHT INDEX FINGER.