1900s radium ore revigorator intended to add radioactivity (radon) to drinking water.
More:
https://www.orau.org/health-physics-...1924-1926.html
Previously:
1918 radioactive energy drink - photo
Uranium in cloud chamber - GIF
Timeline of chemical element discoveries - photo
Gilbert U-238 Atomic Energy Lab toy lab set - photo
Manufacturing plutonium fuel rods in the 1960s - video
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