EE WAS CHECKING THE SUCTION OF THE BOLT MACHINE AND HAD RIGHT HAND ON THE BOOM WHILE THE BOOM WAS BEING RAISED. EE INADVERTENTLY HAD RING FINGER IN THE SISSOR AREA RESULTING IN THE AMPUTATION OF THE FINGER BETWEEN THE 1ST AND 2ND JOINT. EE WAS TREATED AT HOLSTON VALLEY HOSPITAL AND THEY RETURNED TO WORK ON LIGHT DUTY THE NEXT SHIFT.