| · | [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 |
| · | [Tungsten]Market Price of Tungsten Concentrates in China | 3/30/2011 |
| · | [Tungsten]Market Price of Ferrotungsten70% in China | 3/30/2011 |
| · | [Tungsten]Market Price of AmmoniumParatungstate in China | 3/30/2011 |
| · | [Tungsten]Market Price of Tungsten Concentrates in China | 3/29/2011 |
| · | [Tungsten]Market Price of Ferrotungsten70% in China | 3/29/2011 |
| · | [Tungsten]Market Price of AmmoniumParatungstate in China | 3/29/2011 |
| · | [Tungsten]Market Price of Ferrotungsten70% in China | 3/28/2011 |
| · | [Tungsten]Market Price of AmmoniumParatungstate in China | 3/28/2011 |
| · | [Tungsten]Market Price of Tungsten Concentrates in China | 3/23/2011 |