U.S.-U.K. Mutual Defense Agreement Pin Commemorating 50 Years of Collaborated Experiments
Las Vegas, NV: Department of Energy, National National Security Administration, Nevada Nuclear Security Site, 2012. Presumed First thus. Other. Approximately 2.25 inches by 2.5 inches pin in a plastic box of approximately 3 inches by 3 inches. It is shaped like the state of Nevada. It has two pins and backs. The image is the U.K. and U.S. flags above a pair of hands shaking. At the top the text is "NNSS Nevada National Security Site" and at the bottom the text is "50 Years of Collaborated Experiments 2012". The 1958 US–UK Mutual Defense Agreement is a bilateral treaty between the United States and the United Kingdom on nuclear weapons cooperation. It allows the United States and the UK to exchange nuclear materials, technology and information. The treaty was signed on 3 July 1958, after the British hydrogen bomb program successfully tested a hydrogen bomb in Operation Grapple on 8 November 1957. The treaty provided for the sale to the UK of one complete nuclear submarine propulsion plant, plus ten years' supply of enriched uranium to fuel it. Other nuclear material was also acquired from the United States under the treaty. The treaty paved the way for the Polaris Sales Agreement with the UK Polaris program and Trident nuclear programme using American missiles with British nuclear warheads. The most recent renewal extended it to 31 December 2024. More
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