File:Cumuative Shipments of U-235 from Y-12 to Los Alamos 1944-1946.png
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[edit]DescriptionCumuative Shipments of U-235 from Y-12 to Los Alamos 1944-1946.png |
English: During the Manhattan Project, the final stage of uranium enrichment was performed by the Y-12 plant at Oak Ridge, Tennessee. The "product" was then shipped to Los Alamos for machining and casting. This graph shows the volume of product shipped to Los Alamos under the auspices of the Manhattan Project, which lasted until its abolishment at the end of December 1946 (at which point the US Atomic Energy Commission took over all of its property and operations).
The values shown are the total amount of U-235, irrespective of enrichment levels. The uranium shipped in 1944, for example, had an average enrichment level no higher than 70.6% (per page 4 in the same document this chart came from). By July 1945, this average had been raised to 81.6%, and by December 29, 1946, the average enrichment level of the 1,041,026.5 grams of uranium shipped was "Approx. 95%" To get the total amount of uranium in grams, the value for any point on the graph must be multiplied by the enrichment level. So, for example, the table accompanying indicates that on 7/17/1945, 52,506.91 grams of U-235 had been shipped, with an average enrichment of 81.6% U-235. So the total amount shipped by that point, by mass, was around 64,347 grams. The rate of production varied from around 56 grams of uranium per day in late 1944, up to nearly 1 kg per day in October 1945. For the year of 1946, the average rate of production was 2,341.43 grams per day. The graph indicates several milestones:
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Source | This graph comes from the Manhattan District History, a formerly top-secret internal history of the Manhattan Project commissioned by the Manhattan Engineer District of the US Army Corps of Engineers during and after World War II. This particular graph comes from Book 5, Volume 6, "Electromagnetic Operation: Top Secret Appendix." |
Author | Manhattan Engineer District, US Army Corps of Engineers |
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current | 17:12, 4 July 2024 | 1,864 × 1,519 (1.13 MB) | NuclearSecrets (talk | contribs) | crisper version from a different microfilm scan | |
16:23, 11 September 2023 | 924 × 718 (168 KB) | NuclearSecrets (talk | contribs) | Uploaded a work by Manhattan Engineer District, US Army Corps of Engineers from This graph comes from the _[https://blog.nuclearsecrecy.com/2014/09/05/general-groves-secret-history/ Manhattan District History]_, a formerly top-secret internal history of the Manhattan Project commissioned by the Manhattan Engineer District of the US Army Corps of Engineers during and after World War II. This particular graph comes from Book 5, Volume 6, "Electromagnetic Operation: Top Secret Appendix." with U... |
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