| · | [Tungsten]Ammonium Paratungstate in EU Market | 4/25/2012 |
| · | [Tungsten]Ferrotungsten in USA Market | 4/23/2012 |
| · | [Tungsten]Ferrotungsten in EU Market | 4/23/2012 |
| · | [Tungsten]Ferrotungsten in USA Market | 4/20/2012 |
| · | [Tungsten]Ferrotungsten in EU Market | 4/20/2012 |
| · | [Tungsten]Ferrotungsten in USA Market | 4/18/2012 |
| · | [Tungsten]Ferrotungsten in EU Market | 4/18/2012 |
| · | [Tungsten]Ammonium Paratungstate in USA Market | 4/18/2012 |
| · | [Tungsten]Ammonium Paratungstate in EU Market | 4/18/2012 |
| · | [Tungsten]Ferrotungsten in USA Market | 4/16/2012 |
| · | [Tungsten]Ferrotungsten in EU Market | 4/16/2012 |
| · | [Tungsten]Ammonium Paratungstate in USA Market | 4/16/2012 |
| · | [Tungsten]Ammonium Paratungstate in EU Market | 4/16/2012 |
| · | [Tungsten]Ferrotungsten in USA Market | 4/13/2012 |
| · | [Tungsten]Ferrotungsten in EU Market | 4/13/2012 |