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Re:Low-Background Steel by smallpipe on Sunday July 19, 2020 @05:19AM (#23888074)
Low background lead was recently mentioned on xkcd[0]. Maybe that circled back to HN?

[0] https://xkcd.com/2321/

Re:Low-Background Steel by croutonwagon on Sunday July 19, 2020 @06:42PM (#23893048)
There was a recent post on the trinity test

Someone going on a binge from that, through discovering how Kodak found out about nukes from film and low background steel isnt a huge stretch either