Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2003 | 120 | Metric tons, tungsten content | NA |
| 2004 | 20 | Metric tons, tungsten content | -83.33 % |
| 2005 | 180 | Metric tons, tungsten content | 800.00 % |
| 2006 | 500 | Metric tons, tungsten content | 177.78 % |
| 2007 | 570 | Metric tons, tungsten content | 14.00 % |
| 2008 | 340 | Metric tons, tungsten content | -40.35 % |
| 2009 | 170 | Metric tons, tungsten content | -50.00 % |
