Conducting even a symbolic detonation would require time, money, and expertise, sources have told the newspaper
Resuming nuclear tests in the US would take years and cost hundreds of millions of dollars, the Washington Post reported on Thursday, citing experts. The Nevada Test Site, where the US carried out its last nuclear detonation over three decades ago, now uses computer simulations instead of live explosions.
President Donald Trump this week announced that he had “instructed the Department of War to start testing our Nuclear Weapons on an equal basis [with Russia and China],” declaring that preparations would begin immediately.
It remains unclear whether he was referring to underground nuclear detonations, which none of the three nations have conducted for decades. Moscow has warned that any US nuclear explosion would prompt a symmetrical response.
The Post pointed out that if Washington were to proceed, the task would fall not to the Pentagon but to the Department of Energy, specifically the National Nuclear Security Administration (NNSA), which oversees the Nevada Test Site. Experts said reviving testing there would come at significant costs.
Ernest Moniz, who led the Department of Energy under President Barack Obama, estimated that even a “stunt” explosion conducted with no regard to gathering scientific data would still take “maybe a year” to prepare. Corey Hinderstein, a former senior NNSA official, said the agency would need to excavate a new vertical shaft at the cost of some $100 million.
Paul Dickman, a longtime nuclear official, warned that the US may struggle to find personnel with hands-on testing experience. He said competent test directors are “not bureaucrats [or] a PowerPoint crowd” but rather people with “a lot of dirt under their fingernails.”
Washington has long relied on computer simulations and so-called subcritical tests – experiments that stop short of a nuclear explosion – to maintain confidence in its stockpile. The last of more than 1,000 tests conducted by the US took place in 1992.
Trump’s order coincided with announcements by Russian President Vladimir Putin, who reported successful tests of two advanced nuclear systems: the unlimited-range Burevestnik cruise missile and the Poseidon underwater drone. Both reportedly employ breakthrough compact nuclear reactors as propulsion units.
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