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  3 items
  Artifacts

  Rare earths sliding puzzle

  • 1970s – 1980

  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."

  • Manufacturer Molycorp, Inc.
  • Subject Rare earths, Puzzles