| · | [Tungsten]Market Price of Tungsten Concentrates in China | 5/18/2011 |
| · | [Tungsten]Market Price of Ferrotungsten70% in China | 5/18/2011 |
| · | [Tungsten]Market Price of AmmoniumParatungstate in China | 5/18/2011 |
| · | [Tungsten]Market Price of Tungsten Concentrates in China | 5/17/2011 |
| · | [Tungsten]Market Price of Ferrotungsten70% in China | 5/17/2011 |
| · | [Tungsten]Market Price of AmmoniumParatungstate in China | 5/17/2011 |
| · | [Tungsten]Market Price of Tungsten Concentrates in China | 5/16/2011 |
| · | [Tungsten]Market Price of Ferrotungsten70% in China | 5/16/2011 |
| · | [Tungsten]Market Price of AmmoniumParatungstate in China | 5/16/2011 |
| · | [Tungsten]Market Price of Tungsten Concentrates in China | 5/13/2011 |
| · | [Tungsten]Market Price of Ferrotungsten70% in China | 5/13/2011 |
| · | [Tungsten]Market Price of AmmoniumParatungstate in China | 5/13/2011 |
| · | [Tungsten]Market Price of Tungsten Concentrates in China | 5/12/2011 |
| · | [Tungsten]Market Price of Ferrotungsten70% in China | 5/12/2011 |
| · | [Tungsten]Market Price of AmmoniumParatungstate in China | 5/12/2011 |