America Had No Copper in 1942—So US Treasury Loaned 14,700 Tons of Silver to Build the Atomic Bomb

WWII War Records
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2026年04月04日
America was out of copper in 1942 — so the U.S. government did something that had never been done before or since. It secretly borrowed 14,700 tons of silver directly from the Treasury vault and melted it into the electrical wire that powered the machines building the atomic bomb. The workers who handled it didn't know what they were making. The Treasury officials who signed off on it didn't know where it was going. And when the war ended, nearly every ounce was quietly returned — twenty-five years later.

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