Copper ore, Beryllium Ore, Ta & NB, Wo3 We possess raw copper with a purity ranging from 20% to 40% Cu, our Tantalum (Ta) and Niobium (Nb) range between 30-55%, while Tungsten (W) ranges from 60-72.10%. Additionally, our Beryllium (Be) content falls between 10-14Beo.", available for export in quantities ranging from 20 to 100 containers. The export volume has the potential to increase over time.