Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2003 | 715 | Metric tons, tungsten content | NA |
| 2004 | 746 | Metric tons, tungsten content | 4.34 % |
| 2005 | 816 | Metric tons, tungsten content | 9.38 % |
| 2006 | 780 | Metric tons, tungsten content | -4.41 % |
| 2007 | 846 | Metric tons, tungsten content | 8.46 % |
| 2008 | 900 | Metric tons, tungsten content | 6.38 % |
| 2009 | 900 | Metric tons, tungsten content | 0.00 % |
