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 | 200 | Metric tons, tungsten content | -41.18% |
| 2010 | 25 | Metric tons, tungsten content | -87.50% |
| 2011 | 70 | Metric tons, tungsten content | 180.00% |
| 2012 | 95 | Metric tons, tungsten content | 35.71% |
| 2013 | 830 | Metric tons, tungsten content | 773.68% |
