The larger of two coke works in Birmingham is the Alabama Byproducts Corporation (ABC) plant, with 132 ovens, making 730,000 tons of coke for the steel industry per year. There are only a half dozen independent merchant coke plants left in the USA, and this is one of the largest. More often coke is manufactured on site as part of the “integrated production” of Old Steel plants, where all the parts of production are concentrated in one place.