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Posted inNational Security

The U.S. raises red flags on Russia’s plutonium experiments — while ramping up its own

In a maze of tunnels 900 feet beneath the Nevada desert, U.S. nuclear weapons scientists have since the 1990s been intermittently agitating flecks of plutonium with chemical high explosives, carefully trying to push them to the brink of a chain reaction capable of yielding nuclear force. In a separate network of underground tunnels about 4,800 […]