| · | [Tungsten]Market Price of Tungsten Concentrates in China | 5/20/2011 |
| · | [Tungsten]Market Price of Ferrotungsten70% in China | 5/20/2011 |
| · | [Tungsten]Market Price of AmmoniumParatungstate in China | 5/20/2011 |
| · | [Tungsten]Market Price of Tungsten Concentrates in China | 5/19/2011 |
| · | [Tungsten]Market Price of Ferrotungsten70% in China | 5/19/2011 |
| · | [Tungsten]Market Price of AmmoniumParatungstate in China | 5/19/2011 |
| · | [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 |