Alcoa has around 438,000 metric tons of aluminium production idled on a base capacity of 3,948,000 tons annually, the company said. In July Alcoa announced the temporary curtailment of aluminum production at its 120,000 tons a year primary aluminium facility at Badin, North Carolina which has been operating at 90,000 tons annually since September 2000. Ingot-casting operations will continue for the next few months, but is likely to end by Dec. 31. At the same time, Alcoa closed permanently capacity that was already idle at its Troutdale, Oregon facility. Troutdale's entire 121,000 tons capacity was temporarily curtailed in June 2000. It also permanently closed it already idled Rockdale, Texas facility. A total of 76,000 tons of Rockdale's 320,000 tons capacity had been idle for the past several years.