| 31. | Niobium is in the minerals columbite and pyrochlore.
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| 32. | Niobium dust can irritate the eyes and skin.
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| 33. | Pure niobium doesn't react to body fluids, oxygen or cleaning agents.
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| 34. | After subsequent research pelopium was identified to be a mixture of tantalum and niobium.
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| 35. | The niobium cavities are cooled with liquid helium.
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| 36. | Zirconium carbide and niobium carbide can be used as refractory coatings in nuclear reactors.
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| 37. | The experimental fusion reactor ITER uses Niobium-titanium for its poloidal field coils.
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| 38. | Other metals like molybdenum and niobium are sometimes added to the mix for special applications.
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| 39. | Such metals include lithium, niobium-tantalum, bismuth, antimony and rare earths.
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| 40. | Tantalum ores often contain significant amounts of niobium, which is itself a valuable metal.
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