| · | [Tungsten]Market Price of Tungsten Concentrates in China | 4/13/2011 |
| · | [Tungsten]Market Price of Ferrotungsten70% in China | 4/13/2011 |
| · | [Tungsten]Market Price of AmmoniumParatungstate in China | 4/13/2011 |
| · | [Tungsten]Market Price of Tungsten Concentrates in China | 4/12/2011 |
| · | [Tungsten]Market Price of Ferrotungsten70% in China | 4/12/2011 |
| · | [Tungsten]Market Price of AmmoniumParatungstate in China | 4/12/2011 |
| · | [Tungsten]Market Price of Tungsten Concentrates in China | 4/11/2011 |
| · | [Tungsten]Market Price of Ferrotungsten70% in China | 4/11/2011 |
| · | [Tungsten]Market Price of AmmoniumParatungstate in China | 4/11/2011 |
| · | [Tungsten]Market Price of Tungsten Concentrates in China | 4/8/2011 |
| · | [Tungsten]Market Price of Ferrotungsten70% in China | 4/8/2011 |
| · | [Tungsten]Market Price of AmmoniumParatungstate in China | 4/8/2011 |
| · | [Tungsten]Market Price of Tungsten Concentrates in China | 4/7/2011 |
| · | [Tungsten]Market Price of Ferrotungsten70% in China | 4/7/2011 |
| · | [Tungsten]Market Price of AmmoniumParatungstate in China | 4/7/2011 |