Exhibit 8 at the trial of Julius and Ethel Rosenberg, a drawing of an implosion-design nuclear weapon by David Greenglass, created a few days before the trial began in 1951. The drawing was the first time the implosion design was allowed to be made public. Despite being declassified by the Atomic Energy Commission, it was immediately impounded as a threat to national security by the Rosenbergs' lawer, and was only released in 1966 after an investigation into the Rosenberg trial evidence (where it was criticized by experts as very crude and not of any likely intelligence value).

• This scan is from a 1966 New York Times which reprinted it. Since it was done by Greenglass for the purposes of the Rosenberg case and is a piece of federal evidence, it is most likely in the public domain. Nobody has ever put a copyright notice on it in any case, to my knowledge.

	此作品在美国属于公有领域，因为其是由美国政府的官员或雇员，基于其个人公务目的制作的作品，参考美国法典第17篇第1章第105条。 注意︰本模板仅适用于美国联邦政府的原创作品，不适用于任何美国州、属地、联邦个体、县、市或任何次级政府的作品。本模板也不适用于1978年以后由美国邮政署出版的邮票图案（参看美国版权局实践纲领第313.6(C)(1)条）。也不适用于部分美国硬币；参看美国铸币局使用条款。
本文件已被确认为免除已知的著作权法限制（包括所有相关权利）。

https://creativecommons.org/publicdomain/mark/1.0/PDMCreative Commons Public Domain Mark 1.0falsefalse