Oklo just secured a direct path to turn Cold War-era plutonium into fuel for its advanced reactors.   The Department of Energy selected Oklo for advanced negotiations under the Surplus Plutonium Utilization Program, one of five companies chosen to convert existing stockpiles into usable fuel under strict security and safeguards rules. The move gives Oklo a practical bridge while domestic enrichment capacity scales.   Work with radioactive materials at a plutonium facility at the at Los Alamos National Laboratory in 1978.Credit The Santa Clara company is partnering with European advanced reactor developer newcleo on the effort. Oklo would lead U.S. utilization of the surplus material while newcleo would supply fuel expertise and potential project capital, subject to final agreements and U.S. security approvals.  The two firms already announced a strategic partnership last October that includes up to $2 billion in investment through a newcleo-affiliated vehicle for advanced fuel fabrication infrastructure in the United States. newcleo has since begun pre-application talks with the NRC for both a fuel facility and its lead-cooled fast reactor design.   …