| · | [Tungsten]Market Price of Tungsten Concentrates in China | 5/4/2011 |
| · | [Tungsten]Market Price of Ferrotungsten70% in China | 5/4/2011 |
| · | [Tungsten]Market Price of AmmoniumParatungstate in China | 5/4/2011 |
| · | [Tungsten]Market Price of Tungsten Concentrates in China | 5/3/2011 |
| · | [Tungsten]Market Price of Ferrotungsten70% in China | 5/3/2011 |
| · | [Tungsten]Market Price of AmmoniumParatungstate in China | 5/3/2011 |
| · | [Tungsten]Market Price of Tungsten Concentrates in China | 4/29/2011 |
| · | [Tungsten]Market Price of Ferrotungsten70% in China | 4/29/2011 |
| · | [Tungsten]Market Price of AmmoniumParatungstate in China | 4/29/2011 |
| · | [Tungsten]Market Price of Tungsten Concentrates in China | 4/28/2011 |
| · | [Tungsten]Market Price of Ferrotungsten70% in China | 4/28/2011 |
| · | [Tungsten]Market Price of AmmoniumParatungstate in China | 4/28/2011 |
| · | [Tungsten]Market Price of Tungsten Concentrates in China | 4/27/2011 |
| · | [Tungsten]Market Price of Ferrotungsten70% in China | 4/27/2011 |
| · | [Tungsten]Market Price of AmmoniumParatungstate in China | 4/27/2011 |