| · | [Niobium]Ferroniobium|Ferrotantalum in Brazil Market | 1/15/2010 |
| · | [Niobium]Ferroniobium|Ferrotantalum in Brazil Market | 10/9/2009 |
| · | [Niobium]Ferroniobium|Ferrotantalum in Brazil Market | 8/17/2009 |
| · | [Niobium]Ferroniobium|Ferrotantalum in Brazil Market | 8/11/2009 |