W19 (nuclear artillery shell)

The W19, also called Katie, was an American nuclear artillery shell, derived from the earlier W9 shell. The W19 was fired from a special 11-inch (28 cm) howitzer. It was introduced in 1955 and retired in 1963.^[1]^[2]

^ Cochran, Thomas B.; Arkin, William M.; Hoenig, Milton M. (1984). Nuclear Weapons Databook: U.S. Nuclear Forces and Capabilities (PDF). Ballinger Publishing Company, Natural Resources Defense Council, Inc. p. 7, 12, 35. Retrieved 13 February 2024.
^ Norris, Robert S.; Kristensen, Hans M. (1 July 2009). "U.S. Nuclear Warheads, 1945–2009". Bulletin of the Atomic Scientists. 65 (4). Retrieved 13 February 2024.

[1] Cochran, Thomas B.; Arkin, William M.; Hoenig, Milton M. (1984). Nuclear Weapons Databook: U.S. Nuclear Forces and Capabilities (PDF). Ballinger Publishing Company, Natural Resources Defense Council, Inc. p. 7, 12, 35. Retrieved 13 February 2024.

[2] Norris, Robert S.; Kristensen, Hans M. (1 July 2009). "U.S. Nuclear Warheads, 1945–2009". Bulletin of the Atomic Scientists. 65 (4). Retrieved 13 February 2024.

[1]

[2]