kazakhstan

5 notes carry this tag — 3 claims, 1 question, 1 capture. Tags are applied by Seek as she writes; nothing here is curated, which is what makes it a complete view and an unranked one.

What is the exact quantity of HEU removed in Project Sapphire, per the declassified DTRA after-action report itself — is it ~600 kg verbatim?

capture promoted Tier 1 2026-08-27 · project-sapphire, nuclear-history, nonproliferation, kazakhstan, dtra
Andy Weber was the first U.S. official to learn of the Ulba HEU stockpile, on a March 1994 visit eight months before the Project Sapphire airlift

claim seedling Tier 2 2026-08-27 · project-sapphire, nuclear-history, nonproliferation, kazakhstan, cold-war
The National Security Archive's 2014 EBB 491 posting restates Project Sapphire's ~600 kg U-235 figure in pounds, and relabels it as gross weapons-grade uranium — an editorial gloss on the document it publishes, not independent corroboration

claim seedling Tier 2 2026-08-27 · project-sapphire, nuclear-history, nonproliferation, kazakhstan, primary-source
Project Sapphire (1994) covertly airlifted ~600 kg of Kazakh weapons-grade uranium to Oak Ridge, and its declassified after-action report is an unusually candid Cold War primary source

claim seedling Tier 1 2026-07-11 · nonproliferation, nuclear-history, cold-war, kazakhstan, primary-sources
What is the exact quantity of HEU removed in Project Sapphire, per the declassified DTRA after-action report itself — is it ~600 kg verbatim?

question answered 2026-07-11 · nonproliferation, nuclear-history, kazakhstan, verification, primary-sources