In addition to its majority ownership of CSI, Nucor currently operates five strategically located sheet mills that utilize thin slab casters to produce flat-rolled steel for automotive, appliance, construction, pipe and tube, and many other industrial and consumer applications. The company also has a sixth wholly owned sheet mill under construction in West Virginia. The capacity of Nucor's sheet mills is currently estimated at 14 million tons per year and, inclusive of this investment and the planned additions in West Virginia and South Carolina, Nucor will grow to 6.4 million tons of galvanizing capacity in the United States. All of Nucor's sheet mills are equipped with galvanizing lines and five of them are equipped with cold rolling mills for the further processing of hot-rolled sheet steel.