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.

	此作品在美國屬於公有領域，因為其是由美國政府的官員或僱員，基於其個人公務目的製作的作品，參考美國法典第17篇第1章第105條。 注意︰本模板僅適用於美國聯邦政府的原創作品，不適用於任何美國州、屬地、聯邦個體、縣、市或任何次級政府的作品。本模板也不適用於1978年以後由美國郵政署出版的郵票圖案（參看美國版權局實踐綱領第313.6(C)(1)條）。也不適用於部分美國硬幣；參看美國鑄幣局使用條款。
此作品無已知的著作權限制，亦不受所有相關和鄰接的權利限制。

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