The Y-12 National Security Complex in Oak Ridge, Tennessee, is now the only site qualified to produce “binary” alloy, a “specialized material” necessary to manufacture nuclear weapons, in a move the U.S. Department of Energy said ends “two decades of reliance on a limited supply of material manufactured years ago.”
According to the federal agency, binary alloy is used for radiation cases, which house “essential components” for nuclear weapons.
“Under the Trump Administration, NNSA is making sweeping investments to revitalize the nation’s nuclear weapons infrastructure,” said National Nuclear Security Administration (NNSA) Administrator Brandon Williams. “This is not just about a warhead ingredient. This shift symbolizes our commitment to the long-term health of our weapons stockpile and the lasting security of our country.”
While Y-12 once manufactured depleted-uranium components used in American nuclear weapons, some of its operations were shut down or consolidated in the early 2000s, according to a 2020 report by the U.S. Government Accountability Office (GAO). The GAO also found that aging manufacturing equipment and infrastructure needed upgrades or replacement.
In the intervening years, the United States relied on limited inventories of previously manufactured binary alloy rather than producing new supplies, until NNSA announced Thursday that Y-12 had been qualified to resume manufacturing the material.
The news is the latest in a series of developments in Oak Ridge and the surrounding area under the Trump administration, beginning with U.S. Energy Secretary Chris Wright stating in March 2025 that the administration planned to make it the scene of a second Manhattan Project, this time to create the energy necessary for artificial intelligence (AI), which the White House has since termed super intelligence (SI).
“We are at a critical time again right now, where another technology of simply immense import is hitting critical mass and is going to change our world in the next several years. That’s artificial intelligence,” said Wright.
“There’s a race. China has huge resources, they are massively focused on artificial intelligence,” said the secretary.
Since then, NNSA restored Y-12’s enriched-uranium purification capacity, the Department of Energy began reusing former Manhattan Project facilities for modern Trump-era energy projects, and a new consortium was formed to support nuclear manufacturing jobs.
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Tom Pappert is a 2025 recipient of the Dao Prize and the lead reporter for The Tennessee Star. He also reports for the Star News Network. Follow Tom on X. Email tips to [email protected].
