w33

The W33 was an American nuclear artillery shell, fired from an eight-inch (203 mm) M110 howitzer and M115 howitzer.
A total of 2,000 W33 projectiles were produced, the first of which was manufactured in 1957. The W33 remained in service until 1992. The warhead used enriched uranium (code named oralloy) as its nuclear fissile material and could be used in two different yield configurations. This required the assembly and insertion of different pits, with the amount of fissile materials used controlling whether the destructive yield was low or high. The highest-yield version of the W33 may have been a boosted fission weapon.

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