The Duluth Works steel facilities were, upon construction in 1915, briefly among the most modern steelworks in the world. Although massive in scale to many people, the plant was among more modest facilities within the U.S. Steel empire. At a steelmaking capacity of 973,000 tons per year, it was nowhere near the massive steel plants of
Homestead or
Gary. U.S. Steel bought more land when it built the facilities with the ultimately futile belief that more subsidiaries and other steel-related industries would move to the unoccupied site to consume the plant's products. The only other major tenant on the site was the cement plant of the Universal Atlas Cement Company, a subsidiary of U.S. Steel. A smaller company, Priola and Johnson, took open hearth and blast furnace
slag and granulated it for other uses on the plant property. The Duluth Works featured a ten-furnace open hearth steel production facility, two blast furnaces, 110 oven byproduct coke plant, a
benzole and
toluol plant, a byproducts refinery, coal and coke conveyors and crushing and sizing towers, a
pig iron casting facility, a blowing house powerhouse, a Heine boiler house, fresh water pumping inlet station, a hot gas-soaking pit and stripping building, a massive rolling facility consisting of a blooming mill, 28" rolling mill, billet finishing department, hot gas re-heating beds, bar finishing department, fence post fabrication unit, merchant mill, wire, nail, fence and welded fabric mesh building, machine repair shop, three massive materials yard crane bridges and loading/unloading docks, locomotive engine repair and servicing building, its own railyard, a lab, an ore thawhouse, a coal thawhouse and various warehouses and other structures. When initially completed in 1916, the steel plant site had 48 buildings. == Operations ==