| · | [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 |
| · | [Tungsten]Market Price of Tungsten Concentrates in China | 4/6/2011 |
| · | [Tungsten]Market Price of Ferrotungsten70% in China | 4/6/2011 |
| · | [Tungsten]Market Price of AmmoniumParatungstate in China | 4/6/2011 |
| · | [Tungsten]Market Price of Tungsten Concentrates in China | 4/2/2011 |
| · | [Tungsten]Market Price of Ferrotungsten70% in China | 4/2/2011 |
| · | [Tungsten]Market Price of AmmoniumParatungstate in China | 4/2/2011 |
| · | [Tungsten]Market Price of Tungsten Concentrates in China | 4/1/2011 |
| · | [Tungsten]Market Price of Ferrotungsten70% in China | 4/1/2011 |
| · | [Tungsten]Market Price of AmmoniumParatungstate in China | 4/1/2011 |
| · | [Tungsten]Market Price of Tungsten Concentrates in China | 3/31/2011 |
| · | [Tungsten]Market Price of Ferrotungsten70% in China | 3/31/2011 |
| · | [Tungsten]Market Price of AmmoniumParatungstate in China | 3/31/2011 |