The Cartersville Steel Mill facility was purchased by Gerdau Ameristeel in 2002. The 365 employees of Cartersville successfully achieved ISO9001 and 14001 in 2005 and 2006, respectively.

The facility was originally built and operated by Atlantic Steel in 1975 as a greenfield site. Birmingham Steel purchased the facility in 1996, upgrading the Meltshop, and removed the original 12-inch bar mill to install the Medium Section Mill. Production rates and finished product mix were expanded after the Gerdau Ameristeel acquisition. The Meltshop consists of one Demag-designed 120-ton eccentric bottom tapping electric arc furnace and an accompanying ladle furnace. The Voest-Alpine 4-strand caster is capable of producing six different billet/bloom/beam blank sizes, at approximately 1 million tons annually. The Rolling Mill produces various shapes, including wide flange beams, standard I-beams, channels, angles and flats. The Schloemann Siemag-designed mill consists of a reversing rougher and 12 in-line stands. The finishing end processes product through either the traversing cold saw or 1,000 mT Danieli cold shear, onto an 80-foot Danieli stacker. The cold shear and stacker were successfully commissioned in 2006. The capacity of the Rolling Mill is in excess of 600,000 tons annually.