At an April 25, 2010, service in Beckley, W. Va., for the 29 miners killed in the Upper Big Branch explosion, helmets — placed on crosses — were lined up in their honor. Jewel Samad /AFP/Getty Images hide caption

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Massey Officials Charged In 2010 Coal Mine Blast

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Massey Mine Boss Charged In Deadly Coal Mine Explosion

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Mitt Romney at the opening ceremony of the 2002 Winter Olympics in Salt Lake City. Roberto Schmidt/AFP/Getty Images hide caption

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Nobel Peace Prize laureate Elie Wiesel Charles Dharapak/AP hide caption

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Listen to Howard Berkes on 'All Things Considered'

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Engineer Roger Boisjoly examines a model of the O-Rings, used to bring the Space Shuttle into orbit, at a meeting of senior executives and academic representatives in Rye, New York in Sept. 1991. AP hide caption

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Remembering Roger Boisjoly: He Tried To Stop Shuttle Challenger Launch

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At the opening ceremony of the 2002 Winter Olympics in Salt Lake City, Mitt Romney (left) stands with President George W. Bush (center) and International Olympic Committee President Jacques Rogge (right) in front of the American flag that flew at the World Trade Center before the Sept. 11 terrorist attacks. George Frey/AFP/Getty Images hide caption

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Romney's Olympic Legacy: Savior Or Self-Promoter?

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