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“Radium girls” painting watch faces with radioactive glow-in-the-dark paint [pubic domain]
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!["Radium girls" painting watch faces with radioactive glow-in-the-dark paint [pubic domain]](https://www.energyvanguard.com/wp-content/uploads/2023/05/radium-girls-glow-in-the-dark-watch-face-painters.jpg)
