| · | [Tungsten]Ferrotungsten in EU Market | 3/28/2012 |
| · | [Tungsten]Ammonium Paratungstate in EU Market | 3/28/2012 |
| · | [Tungsten]Ferrotungsten in USA Market | 3/26/2012 |
| · | [Tungsten]Ferrotungsten in EU Market | 3/26/2012 |
| · | [Tungsten]Ammonium Paratungstate in EU Market | 3/26/2012 |
| · | [Tungsten]Ferrotungsten in USA Market | 3/23/2012 |
| · | [Tungsten]Ferrotungsten in EU Market | 3/23/2012 |
| · | [Tungsten]Ammonium Paratungstate in USA Market | 3/23/2012 |
| · | [Tungsten]Ammonium Paratungstate in EU Market | 3/23/2012 |
| · | [Tungsten]Ferrotungsten in EU Market | 3/21/2012 |
| · | [Tungsten]Ammonium Paratungstate in USA Market | 3/21/2012 |
| · | [Tungsten]Ammonium Paratungstate in EU Market | 3/21/2012 |
| · | [Tungsten]Ferrotungsten in EU Market | 3/19/2012 |
| · | [Tungsten]Ammonium Paratungstate in USA Market | 3/19/2012 |
| · | [Tungsten]Ammonium Paratungstate in EU Market | 3/19/2012 |