EMPLOYEE WAS ASSIGNED THE TASK OF CHANGING OUT THE CENTER BOLT OF A WIND BRACE WITHIN THE RAW MILL STRUCTURE. A COME-ALONG SHOULD HAVE BEEN USED TO SUPPORT THE WIND BRACE BUT WAS NOT. HE LOOSENED THE BOLT AND USED HIS RIGHT MIDDLE FINGER TO PUSH THE BOLT OUT OF THE BOLT HOLE. AT THAT POINT THE BRACE SHIFTED, AMPUTATING THE END OF HIS FINGER NEAR THE FIRST JOINT.