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