| 11. | Eriochrome Black T has also been used to detect the presence of rare earth metals.
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| 12. | Especially rare earth metals have been shown to reduce sintering of metal catalysts when alloyed.
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| 13. | Pieces of rare earth metal which was discovered as an impurity in the mineral ytterbia.
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| 14. | The name " didymium " continued to be used in the rare earth metal industry.
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| 15. | The Ames Laboratory retained a focus on chemistry and metallurgy, particularly of the rare earth metals.
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| 16. | This reflected the belief at that time that thorium and the rare earth metals were divalent.
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| 17. | The converters use rare earth metals, oxides such as cerium and lanthanum, that are plentiful in China.
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| 18. | Ferrangol's role has expanded to include management of gold, manganese, non-ferrous, precious and rare earth metals concessions.
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| 19. | The following steps and process flow diagram detail the rare earth metal extraction process from the ore.
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| 20. | Research carried out by CNRS developed new high-energy hybrid alloys incorporating rare earth metals for the negative electrode.
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