Pacific Proving Grounds
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The Pacific Proving Grounds was the name given by the United States government to a number of sites in the Marshall Islands and a few other sites in the Pacific Ocean at which it conducted nuclear tes
The United States began using the Marshall Islands as a nuclear testing site beginning in 1946.
The "Baker" shot of Operation Crossroads in 1946 was an underwater shot.
After the Ivy Mike shot, only a large crater (at left) remained of the island of Elugelab.
Castle Bravo
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Castle Bravo was the first in a series of high-yield thermonuclear weapon design tests conducted by the United States at Bikini Atoll, Marshall Islands, as part of Operation Castle. Detonated on 1 Mar
Pacific Proving Grounds
…nearly 80% of the total yields of those detonated by the U.S., with an estimated total yield of around 210 megatons, with the largest being the 15 Mt Castle Bravo shot of 1954 which spread considerable nuclear fallout on many of the islands, including several that were inhabited and some that had not been evacuated…
The SHRIMP device in its shot cab
Shot-cab installation of SHRIMP device, with humans for scale
Bravo SHRIMP device shot-cab
SHRIMP device delivered via truck awaiting installation