Niobium> Statistical data> Data by Country> United States> Output> Output of Niobium Ore in United States (Y)
- Output of Niobium Ore in United States in 2014Jan 15, 2015
- Output of Niobium Ore in United States in 2013Jan 15, 2014
- Output of Niobium Ore in United States in 2012Jan 15, 2013
