Lêer:Are your drawers closed? Manhattan Project security poster.png
Grootte van hierdie voorskou: 558 × 600 piksels. Ander resolusies: 223 × 240 piksels | 447 × 480 piksels | 873 × 938 piksels.
Oorspronklike lêer (873 × 938 piksels, lêergrootte: 62 KG, MIME-tipe: image/png)
Opsomming
| Beskrywing |
English: A security poster used in the secret US Manhattan Project during World War 2, whose purpose was to build an atomic bomb. It warned employees to keep drawers in offices closed and put classified documents into locked safes when they were not being used, to prevent unauthorized personnel from seeing them. |
| Datum | |
| Bron | Retrieved October 10, 2014 from Leslie R. Groves, Ed. (~1948) Manhattan District History, Manhattan Project, U.S. Army Corps of Engineers, Book IV: Pile Project, Vol. 6: Operations, Appendix B, C, D & E, p. 109, declassified version, on Internet Archive |
| Outeur | Unknown: There is a signature in the bottom left of the image that may be "Don L" |
Lisensiëring
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This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code.
Note: This only applies to original works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision. This template also does not apply to postage stamp designs published by the United States Postal Service since 1978. (See § 313.6(C)(1) of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see The US Mint Terms of Use.
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| Hierdie lêer is geïdentifiseer as vry van bekende beperkings onder kopiereg, insluitend alle verwante en naburige regte. | ||
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| Datum/Tyd | Duimnael | Dimensies | Gebruiker | Opmerking | |
|---|---|---|---|---|---|
| huidig | 16:01, 10 Oktober 2014 | | 873 × 938 (62 KG) | Chetvorno | User created page with UploadWizard |
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