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About 100 miles outside Las Vegas, deep in a remote patch of desert, there's a $19 billion hole in the ground. That's how much it has cost to fight over and build this five mile test tunnel under Yucca Mountain.

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A nuclear test reactor that can melt uranium fuel rods in seconds is running again after a near quarter-century shutdown as U.S. officials try to revamp a fading nuclear power industry with safer fuel designs and a new generation of power plants. 

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The proposed nuclear waste repository at Yucca Mountain is back up for discussion in Congress, so we take a closer look at the details of the long-defunct project.