FILE - In this July 14, 2018, file photo, a sign warns of a falling danger on the crest of Yucca Mountain during a congressional tour near Mercury, Nev. Nevada's governor and congressional delegation say recent earthquakes should make the U.S. Energy Department look again at seismic risks at a site eyed as the place to bury the nation's nuclear waste, Wednesday, July 17, 2019. (AP Photo/John Locher, File)
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