Operation Tumbler-Snapper
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Operation Tumbler-Snapper was a series of atomic tests conducted by the United States in the spring of 1952 at the Nevada Test Site. The Tumbler-Snapper Series of tests preceded Operation Ivy, and followed Operation Buster-Jangle.
The Tumbler phase consisted of four daytime airdrops which were intended to help explain discrepancies in the actual and estimated blast shock wave damage noted on previous detonations, and to establish more accurately the optimum height of burst.
The Snapper phase consisted of 4 tower shots fired during the nighttime on the 7th and 25th of May, and the 1st and 5th of June.