Military
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The 280 mm Atomic Cannon was the largest nuclear-capable mobile artillery piece manufactured by the United States. On May 25, 1953, a 280 mm cannon fired an atomic projectile a distance of 7 miles at the Nevada Test Site. Twenty 280 mm cannons were manufactured. Its length was 84 feet, its weight was 86 tons, its range was 15 to 19 miles, and its warhead could be conventional or nuclear, including the W-9 and W-19. It entered the stockpile in 1953 and was retired from the stockpile in 1963.
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