| · | [Tungsten]Market Price of Tungsten Concentrates in China | 3/31/2012 |
| · | [Tungsten]Market Price of Ferrotungsten70% in China | 3/31/2012 |
| · | [Tungsten]Market Price of AmmoniumParatungstate in China | 3/31/2012 |
| · | [Tungsten]Market Price of Tungsten Concentrates in China | 3/30/2012 |
| · | [Tungsten]Market Price of Ferrotungsten70% in China | 3/30/2012 |
| · | [Tungsten]Market Price of AmmoniumParatungstate in China | 3/30/2012 |
| · | [Tungsten]Market Price of Tungsten Concentrates in China | 3/29/2012 |
| · | [Tungsten]Market Price of Ferrotungsten70% in China | 3/29/2012 |
| · | [Tungsten]Market Price of AmmoniumParatungstate in China | 3/29/2012 |
| · | [Tungsten]Market Price of Tungsten Concentrates in China | 3/28/2012 |
| · | [Tungsten]Market Price of Ferrotungsten70% in China | 3/28/2012 |
| · | [Tungsten]Market Price of AmmoniumParatungstate in China | 3/28/2012 |
| · | [Tungsten]Market Price of Tungsten Concentrates in China | 3/27/2012 |
| · | [Tungsten]Market Price of Ferrotungsten70% in China | 3/27/2012 |
| · | [Tungsten]Market Price of AmmoniumParatungstate in China | 3/27/2012 |