| · | [Tungsten]Market Price of Tungsten Concentrates in China | 5/31/2013 |
| · | [Tungsten]Market Price of Ferrotungsten70% in China | 5/31/2013 |
| · | [Tungsten]Market Price of AmmoniumParatungstate in China | 5/31/2013 |
| · | [Tungsten]Market Price of Tungsten Concentrates in China | 5/30/2013 |
| · | [Tungsten]Market Price of Ferrotungsten70% in China | 5/30/2013 |
| · | [Tungsten]Market Price of AmmoniumParatungstate in China | 5/30/2013 |
| · | [Tungsten]Market Price of Tungsten Concentrates in China | 5/29/2013 |
| · | [Tungsten]Market Price of Ferrotungsten70% in China | 5/29/2013 |
| · | [Tungsten]Market Price of AmmoniumParatungstate in China | 5/29/2013 |
| · | [Tungsten]Market Price of Tungsten Concentrates in China | 5/28/2013 |
| · | [Tungsten]Market Price of Ferrotungsten70% in China | 5/28/2013 |
| · | [Tungsten]Market Price of AmmoniumParatungstate in China | 5/28/2013 |
| · | [Tungsten]Market Price of Tungsten Concentrates in China | 5/27/2013 |
| · | [Tungsten]Market Price of Ferrotungsten70% in China | 5/27/2013 |
| · | [Tungsten]Market Price of AmmoniumParatungstate in China | 5/27/2013 |