Comments on: The demands for copper to be used in defense projects far exceeded the national supply https://www.isegoria.net/2025/11/the-demands-for-copper-to-be-used-in-defense-projects-far-exceeded-the-national-supply/ From the ancient Greek for equality in freedom of speech; an eclectic mix of thoughts, large and small Wed, 15 Jul 2026 14:14:41 +0000 hourly 1 http://wordpress.org/?v=3.6.1 By: Freddo https://www.isegoria.net/2025/11/the-demands-for-copper-to-be-used-in-defense-projects-far-exceeded-the-national-supply/comment-page-1/#comment-3760334 Freddo Sun, 23 Nov 2025 19:06:44 +0000 https://www.isegoria.net/?p=53630#comment-3760334 Bruce, Wikipedia has uranium centrifuges as a postwar technology, whereas the Manhattan Project used gaseous diffusion (as well as briefly the Calutron).

]]> By: Bruce https://www.isegoria.net/2025/11/the-demands-for-copper-to-be-used-in-defense-projects-far-exceeded-the-national-supply/comment-page-1/#comment-3760319 Bruce Wed, 19 Nov 2025 17:08:21 +0000 https://www.isegoria.net/?p=53630#comment-3760319 You can see why ‘sunk cost fallacy’ drove the use of the bomb. (As well as the sensible Paul Fussell ‘Thank God for the Atom Bomb’ end the war stuff).

I can’t seem to find the Greg Cochran stuff about how the Manhatten Project used the wrong process to get suitably pure uranium. Centrifuges and gas diffusion?

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