The origin of this structure begins with a history of steel making in 1740, when an entrepreneur named William Bird constructed several iron forges where the Schuylkill River met with Hay Creek; an area that would later on become Birdsboro, named in William Bird's honor. The company expanded greatly over the years as the demands for iron, and subsequently steel, rose during the wartime. During World War II, the government expressed an interest in acquiring steel for the U.S. Navy from The Birdsboro Steel Foundry and Machine Company. In response to winning this contract, this large steel mill was constructed in 1944, consisting of nine massive bays reaching up to 1,480 feet long and 50 feet high. Soon, the role of the plant shifted to manufacturing tanks for the Army, and the name of the plant was known as Armorcast. Sherman and Patton model tanks were the main product of the plant from World War II through the Korean War.