In this Saturday, April 9, 2011, photo, the Alcoa headquarters building stands in downtown Pittsburgh. Alcoa Inc. says fourth-quarter earnings in 2012 met Wall Street's expectations, and it sees slightly higher demand for aluminum this year. The company said Tuesday that net (AP Photo/Gene J. Puskar)

Associated Press
In this Saturday, April 9, 2011, photo, the Alcoa headquarters building stands in downtown Pittsburgh. Alcoa Inc. says fourth-quarter earnings in 2012 met Wall Street's expectations, and it sees slightly higher demand for aluminum this year.  The company said Tuesday that net   (AP Photo/Gene J. Puskar)
In this Saturday, April 9, 2011, photo, the Alcoa headquarters building stands in downtown Pittsburgh. Alcoa Inc. says fourth-quarter earnings in 2012 met Wall Street's expectations, and it sees slightly higher demand for aluminum this year. The company said Tuesday that net (AP Photo/Gene J. Puskar)
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