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Associated Press
Jimmy Tu, left, a co-owner of Bunker restaurant in New York, adjusts an air purifier that he claims cleanses the air of pollutants in his Queens restaurant which is adjacent to a Superfund site on Newtown Creek, Wednesday, Feb. 20, 2013.  Neo Tanusakdi, center, rings up a customer's order. (AP Photo/Kathy Willens)

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