Title: I noticed a worker at a demolition site using power tools to extract cylinders from an old concrete wall. While I&#x27;m sure this particular project isn&#x27;t aimed at scientific research, it made me wonder if there&#x27;s a demolition-materials equivalent of ice core research.<p><a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Ice_core" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Ice_core</a><p>After all, steel has a different level of radioactivity depending on whether it was manufactured before 1945 (!).<p><a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Low-background_steel" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Low-background_steel</a><p>Could there be similar properties in old concrete where one could learn interesting things about the composition of the nearby air at the time the concrete was first poured?
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