Zirconium. ATI was the first industrialized manufacturer of zirconium. In the late 1950s, ATI zirconium products were used for the nation's first full-scale commercial nuclear power plant, built in Shippingport, Pennsylvania, USA. Not only is ATI a pioneer in zirconium, today it is also a leader in zirconium metallurgy. Zirconium Chemicals.Web