Operation Castle was a United States series of high-yield (high-energy) nuclear tests by Joint Task Force 7 (JTF-7) at Bikini Atoll beginning in March 1954. It followed Operation Upshot–Knothole and preceded Operation Teapot .

May 17, 2006 · Operation Castle was a series of high yield thermonuclear weapon design tests.Following the initial experimental demonstration of the Ulam-Teller design in Operation Ivy (the Sausage device detonated in the Ivy Mike test) both weapon labs rushed to develop a number of deliverable weaponized designs.

Washington, D.C., February 29, 2024 - Seventy years ago, on 1 March 1954 (28 February in Washington), the U.S. government detonated a thermonuclear weapon, code-named “Shrimp,” on Bikini Atoll in the Marshall Islands in what turned out to be the largest nuclear test in U.S. history.

城堡行動 （英語： Operation Castle）是 美國 於1954年3月1日起在 太平洋 的 比基尼 及 埃內韋塔克 等兩個 環礁 所進行的 核子試爆 實驗，共計6次試爆。 其中以代號Bravo的實驗最為著名，由於美國對該次核試的威力估算錯誤，導致在附近海域作業的上百艘漁船及2萬餘居民遭受嚴重的 急性辐射综合症，該島被夷為平地並留下直徑1.2 英里 的大洞，亦導致 第五福龍丸事件 的發生。

Operation CASTLE was a six-detonation nuclear weapon test series (see table) held at the Atomic Energy Commission’s (AEC) Pacific Proving Ground (PPG) from March 1 to May 31, 1954. The PPG consisted principally of Enewetak and Bikini Atolls in the northwestern Marshall Islands in the Central Pacific Ocean. Historical Background

Dec 31, 2014 · Nuclear Test Film - Operation Castle 1954 DVD Copied by The Department of Energy, in cooperation with the Department of Defense, declassified a series of historical films on the nuclear weapons program. They were converted to videotape format to help preserve the films and to facilitate the declassification and release process.

城堡作战（Operation Castle）是美国于1954年3月1日起在太平洋的比基尼及埃内韦塔克等两个环礁所进行的一连串核子试爆实验，共计有6次，其中以第一次代号Bravo的实验最著名，因为美国对该次实验的威力估算错误，导致在附近海域作业的上百艘渔船及2万余居民 ...

城堡行動 （英語： Operation Castle）是 美國 於1954年3月1日起在 太平洋 的 比基尼 及 埃內韋塔克 等兩個 環礁 所進行的 核子試爆 實驗，共計6次試爆。 其中以代號Bravo的實驗最為著名，由於美國對該次核試的威力估算錯誤，導致在附近海域作業的上百艘漁船及2萬餘居民遭受嚴重的 急性辐射综合症，該島被夷為平地並留下直徑1.2 英里 的大洞，亦導致 第五福龍丸事件 的發生。

By 1963, 230 total nuclear weapons had been fired worldwide throughout 19 testing operations which required an estimated 200,000 personnel. [2] At the height of the United States atmospheric nuclear testing program, Operation Castle, a series of high yield nuclear weapons tests was conducted in 1954. [2]

Dec 31, 2014 · Operation CASTLE was a six-detonation test series held at the Atomic Energy Commission's (AEC) Pacific Proving Ground in the Spring of 1954. This test series, principally conducted at the Enewetak and Bikini Atolls in the northwestern Marshall Islands, provided proof tests of large-yield thermonuclear, or hydrogen, devices.