FILE - In this March 26, 1999, file photo, the first load of nuclear waste arrives at the Waste Isolation Pilot Plant site in Carlsbad, N.M., from Los Alamos National Laboratory. Officials say a major portion of a multi-million-dollar rebuild ventilation system at the U.S. government's only underground nuclear waste repository is expected to be built by 2020. (AP Photo/Thomas Herbert, File)
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