Trinity (nuclear test, 1945-07-16, first nuclear weapon detonated)

Its plutonium was produced at Hanford site.

Video 6. Trinity Test Preparations by AtomicHeritage (2016) Source. Appears to be a compilation of several videos, presumably each with their own separate LA-UR, though these are not noted. Credited: "Video courtesy of the Los Alamos National Laboratory Archives", TODO how to search that archive online?

Video 7. Trinity: Getting The Job Done. Source. Good video, clarifies several interesting technical points:

Gun-type fission weapon were much easier to build as you don't need super synchronized charges as in implosion-type fission weapon. But they are less efficient.
Plutonium make much more efficient usage of uranium, because you don't need to highly enrich a bunch of Uranium-235 in the first place, but rather just use way less enriched Uranium-235 to produce a bunch of Plutonium by converting Uranium-238

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Manhattan Project
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Trinity