Two maintenance employees were reattaching a butterfly valve between two 6-inch diameter pipes with flanges. The gap between the pipes was not aligning correctly. One employee used a pry bar to lift the flanges while the other employee tried positioning the valve. The pry bar slipped and caused the flanges to fall on the employee's right hand. The employee suffered a crushed right finger and an amputation to the tip of the little finger. The ring finger was later amputated during surgery.