Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2003 | 7 | Metric tons, tungsten content | NA |
| 2004 | 12 | Metric tons, tungsten content | 71.43% |
| 2005 | 7 | Metric tons, tungsten content | -41.67% |
| 2006 | 15 | Metric tons, tungsten content | 114.29% |
| 2007 | 7 | Metric tons, tungsten content | -53.33% |
| 2008 | 28 | Metric tons, tungsten content | 300.00% |
| 2009 | 33 | Metric tons, tungsten content | 17.86% |
| 2010 | 18 | Metric tons, tungsten content | -45.45% |
| 2011 | 15 | Metric tons, tungsten content | -16.67% |
| 2012 | 290 | Metric tons, tungsten content | 1,833.33% |
| 2013 | 320 | Metric tons, tungsten content | 10.34% |
