EE WAS HOLDING A BAR ON A SPACER ON A CENTER PIN IN A 980 LOADER WHILE ANOTHER EE WAS TAPPING ON THE BAR TO DETERMINE HOW TIGHT THE SPACER WAS WHEN A CHIP OF METAL FLEW OFF THE SPACER AND WENT IN EMLOYEE'S LEFT ARM JUST ABOVE THE WRIST. WAS INSTRUCTED NOT TO USE ARM FOR 2 DAYS. DECIDED TO LEAVE METAL IN, MAY HAVE TO TAKE IT OUT LATER DATE IF IT FLARES UP.