Radiation sensitive science experiments also have a need for low background lead. Here the need is for much older lead, ideally thousands of years old. [1] ht

Radiation sensitive science experiments also have a need for low background lead. Here the need is for much older lead, ideally thousands of years old. [1] https://www.theatlantic.com/science/archive/2019/10/search-dark-matter-depends-ancient-shipwrecks/600718/ https://www.theatlantic.com/science/archive/2019/10/search-d...