FILE - This Nov. 20, 2013, file photo, seen through thick protective glass shows the area where workers sand-blast the large stainless steel tanks used in the vitrification process to rid them of contaminants at the Defense Waste Processing Facility at the Savannah River Site near Aiken, S.C. The U.S. Energy Department is asking a federal judge in Reno to dismiss the state’s lawsuit challenging plutonium shipments to Nevada while an appeals court considers whether to overturn the judge's earlier refusal to grant the state’s request for a temporary injunction blocking the shipments from South Carolina. (AP Photo/Stephen B. Morton, File)
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