Common bricks can be used to detect past presence of uranium, plutonium

Researchers have demonstrated a technique that can determine whether bricks – the common building material – have ever been near a radiological source, and identify the specific type of source, such as high enriched uranium or plutonium.

from Engineering and Construction News – ScienceDaily https://www.sciencedaily.com/releases/2018/03/180301151241.htm

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