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Rare earths sliding puzzle

  • 1970s – 1980

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Square slide puzzle with white frame and 15 orange sliding pieces. Sliding pieces have the chemical symbols for the rare earth elements printed on them. Printed on bottom edge of frame is "Union Molycorp."

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  • 4 in H x .25 in H x 4 in L
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Rights Creative Commons Attribution 4.0 International License
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  • Image copyright held by Science History Institute. Trademark or other legal restrictions may exist.
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  • Courtesy of Science History Institute

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Science History Institute. Rare Earths Sliding Puzzle. Photograph, 2024. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/p8gi3b5.

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The Science History Institute recognizes there are materials in our collections that may be offensive or harmful, containing racist, sexist, Eurocentric, ableist, or homophobic language or depictions. The history of science is not exempt from beliefs or practices harmful to traditionally marginalized groups. The Institute is engaged in ongoing efforts to responsibly present and address the evidence of oppression and injustice inextricable from the history of science. If you would like to learn more about our ongoing efforts or if you encounter harmful, inaccurate, or insufficient descriptions, please contact us at digital@sciencehistory.org.