When the aluminum century rolls around, it'll be ready. Century Aluminum makes primary molten and ingot aluminum at facilities in Kentucky and West Virginia, as well as in Iceland; that last facility is operated by subsidiary Nordural. Century Aluminum also owns just less than 50% of an aluminum production facility in South Carolina (Alcoa owns the rest). It also owns 40% of a joint venture facility in China. Three customers -- diversified metals company BHP Billiton, commodities trader Glencore International, and wire and cable maker Southwire -- account for almost 80% `of Century Aluminum's sales. Glencore is Century Aluminum's former parent, though it still has a 39% stake in the company.