The W19 was an American
Nuclear artillery shell, derived from the earlier
W9 shell. The W19 is fired from a special 11 inch howitzer. It was introduced in 1955 and retired in 1963.The W19 was 11 inches in diameter, 54 inches long, and weighed 600 pounds. It had a yield of 15-20
kilotons.The W19, like its predecessor the W9, is a gun-type nuclear weapon.
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