Youngstown Sheet and Tube Company's Campbell Works blast furnace stove exterior

This is a view of the exterior of one of the blast furnace stoves at Youngstown Sheet and Tube Company's Campbell Works, ca. 1930-1939. The stoves were important to the operation of the blast furnaces because they heated the air that was blown into the furnace. Each blast furnace at Campbell had four stoves, for a total of 16 stoves. Stoves are brick-lined, have a steel shell, and contain a combustion chamber in which waste gas from the blast furnace is used to heat the refractory brickwork around which an incoming blast of cold air will circulate