Mark 7 nuclear bomb
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Mark 7 "Thor" was the First tactical fission bomb adopted by US armed forces. It was also the first weapon to be delivered using the toss method with the help of the low-altitude bombing system. The weapon was tested in Operation Buster-Jangle. Wikipedia
Blast yield: 8, 19, 22, 30, 31, and 61 kt by using different weapon pits
Length: 15 feet 2 inches (4.62 m)
No. built: 3,050 to 3,150 weapons produced in all variants