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Baddeley, Bob, Low Background Steel – So Hot Right Now, Hackaday, March 27, 2017 https://hackaday.com/2017/03/27/low-background-steel-so-hot-right-now/
Oelbaum, Jed, The Worldwide Scavenger Hunt for Vintage, Low-Radiation Metals, good.is, May 10, 1028 https://www.good.is/articles/the-search-for-low-background-steel
Andrews, Robin George, Why the Search for Dark Matter Depends on Ancient Shipwrecks, The Atlantic, October 25, 2019 https://www.theatlantic.com/science/archive/2019/10/search-dark-matter-depends-ancient-shipwrecks/600718/
McIntyre, Joanne, Disappearing Warships: Scavengers Raid War Graves for ‘Low Background’ Steel, Stainless Steel World, https://www.stainless-steel-world.net/webarticles/joanne-mcintyre/disappearing-warships-scavengers-raid-war-graves-for-low-background-steel.html