In 1921 the old 6 1/2 foot brick-lined steel smoke stack was replaced with a reinforced concrete stack that was 265 feet high.
The stack was 13 feet 4 inches wide at the bottom, tapering to 9 feet at the top.
The flue connecting the stack to the boiler plant was 5 feet by 13 1/2 feet and 36 feet long.
The stack still stands today.