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The original was posted on /r/todayilearned by /u/Texas_Rockets on 2024-09-24 02:23:53+00:00.

Original Title: TIL Low-background steel is steel produced prior to the detonation of the nuclear bombs. Typically sourced from old shipwrecks, it is often used for modern particle detectors because more modern steel is contaminated with traces of nuclear fallout