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In the 1910s, soon after the Curies had discovered radium, a New Jersey corporation called U.S. Radium began to mix radium with paint to create a product called Undark—radium-infused paint that emitted a greenish white light at night.
Although aware of the many injurious effects of radium, U.S. Radium promoted Undark for clock dials, boasting of glow-in-the-dark watches.
They were required to paint delicate lines with fine-tipped brushes, applying the Undark to the tiny numbers and indicator hands of wristwatches.
Undark and the Radium Girls is a damn interesting story of corporate injustice brought to us by who else?
You can give a guy a thrill with Undark in a much better way.”
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