A little side shot from 1979, USI Clearing Detroit Service Center Back in the heavy machine repair, sweat shop days. The iron link was heated with a ring burner for four hours. The two bronze half bushings were packed in dry ice at the same time. We lowered the bronze into the housing on tongs hung below the crane. Four or five men with maple blocks and 5 pound rawhide hammers would drive the bushings home together very evenly. You had one shot at it. Get it skewed and we were screwed.