[chorsestudios]

From [2] “ All natural uranium today contains 0.720% of U-235. If you were to extract it from the Earth’s crust, or from rocks from the moon or in meteorites, that’s what you would find. But that bit of rock from Oklo contained only 0.717%.”

I find it interesting that the .003% difference in U-235 was a large enough deviation to attract attention to Oklo. Thanks for the link

[pests]

I don't find it surprising at all considering how highly regulated anything involving uranium is: mining, storage, enrichment, actual use as weapons or power generators.

Look what effort we went into the last two decades trying to stop Iran from developing their uranium enrichment infrastructure.

Then back in WW2 we did a complete covert op to sabotage the heavy water (used in enrichment) generators in the mountains of Norway just to stop the Germans or Stalin from getting access to weapons grade material.

Hell, they only even had some tons set aside by accident to enrich in the first place.

Anyways, finding already fissled uranium material probably set off many alarm bells at the Pentagon and the Atomic Energy Commission in 1972.