Chad Devereaux works to clear up bricks that fell from three sides of his in-laws\' home in Sparks, Okla., Sunday, Nov. 6, 2011, after two earthquakes hit the area in less than 24 hours. The weekend earthquakes were among the strongest yet in a state that has seen a dramatic, unexplained increase in seismic activity. (AP Photo/Sue Ogrocki) ORG XMIT: OKSO115
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