Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
Year | Production | Unit of Measure | % Change |
2003 | 20 | Metric tons, tungsten content | NA |
2006 | 50 | Metric tons, tungsten content | 150.00% |
2007 | 366 | Metric tons, tungsten content | 632.00% |
2008 | 456 | Metric tons, tungsten content | 24.59% |
2009 | 502 | Metric tons, tungsten content | 10.09% |
2010 | 571 | Metric tons, tungsten content | 13.75% |
2011 | 439 | Metric tons, tungsten content | -23.12% |
2012 | 276 | Metric tons, tungsten content | -37.13% |
2013 | 28 | Metric tons, tungsten content | -89.86% |