| · | [Tungsten]Ammonium Paratungstate in USA Market | 4/1/2011 |
| · | [Tungsten]Ammonium Paratungstate in EU Market | 4/1/2011 |
| · | [Tungsten]Ferrotungsten in USA Market | 3/30/2011 |
| · | [Tungsten]Ferrotungsten in EU Market | 3/30/2011 |
| · | [Tungsten]Ammonium Paratungstate in USA Market | 3/30/2011 |
| · | [Tungsten]Ammonium Paratungstate in EU Market | 3/30/2011 |
| · | [Tungsten]Ferrotungsten in USA Market | 3/28/2011 |
| · | [Tungsten]Ferrotungsten in EU Market | 3/28/2011 |
| · | [Tungsten]Ammonium Paratungstate in USA Market | 3/28/2011 |
| · | [Tungsten]Ammonium Paratungstate in EU Market | 3/28/2011 |
| · | [Tungsten]Ferrotungsten in USA Market | 3/23/2011 |
| · | [Tungsten]Ferrotungsten in EU Market | 3/23/2011 |
| · | [Tungsten]Ammonium Paratungstate in USA Market | 3/23/2011 |
| · | [Tungsten]Ammonium Paratungstate in EU Market | 3/23/2011 |
| · | [Tungsten]Ferrotungsten in USA Market | 3/21/2011 |