This Sept. 4, 2011, file photo shows the main plant facility at the Navajo Generating Station, as seen from Lake Powell in Page, Ariz. (AP Photo/Ross D. Franklin, File)
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This Sept. 4, 2011, file photo shows the main plant facility at the Navajo Generating Station, as seen from Lake Powell in Page, Ariz. (AP Photo/Ross D. Franklin, File)
