AP | A rapidly expanding wildfire in Minnesota's north woods spread a plume of smoke across the Upper Midwest

This photo provided Sept. 13, 2011, by the Superior National Forest shows a forest fire in the Boundary Waters Canoe Area Sept. 11 near Ely, Minn. Strong winds whipped fire that started Aug. 18 with a lightning strike started in the wilderness area into a blaze that covered 60,000 acres Tuesday in the northeastern part of the state. (AP Photo/Superior National Forest)

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