| · | [Tungsten]Ammonium Paratungstate in USA Market | 5/11/2011 |
| · | [Tungsten]Ammonium Paratungstate in EU Market | 5/11/2011 |
| · | [Tungsten]Ferrotungsten in USA Market | 5/9/2011 |
| · | [Tungsten]Ferrotungsten in EU Market | 5/9/2011 |
| · | [Tungsten]Ammonium Paratungstate in USA Market | 5/9/2011 |
| · | [Tungsten]Ammonium Paratungstate in EU Market | 5/9/2011 |
| · | [Tungsten]Ferrotungsten in USA Market | 5/6/2011 |
| · | [Tungsten]Ferrotungsten in EU Market | 5/6/2011 |
| · | [Tungsten]Ammonium Paratungstate in USA Market | 5/6/2011 |
| · | [Tungsten]Ammonium Paratungstate in EU Market | 5/6/2011 |
| · | [Tungsten]Ferrotungsten in USA Market | 5/4/2011 |
| · | [Tungsten]Ferrotungsten in EU Market | 5/4/2011 |
| · | [Tungsten]Ammonium Paratungstate in USA Market | 5/4/2011 |
| · | [Tungsten]Ammonium Paratungstate in EU Market | 5/4/2011 |
| · | [Tungsten]Ferrotungsten in USA Market | 4/29/2011 |