Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
Year | Production | Unit of Measure | % Change |
2002 | 1400 | Kilograms | NA |
2003 | 1400 | Kilograms | 0.00% |
2004 | 1400 | Kilograms | 0.00% |
2005 | 1400 | Kilograms | 0.00% |
2006 | 1400 | Kilograms | 0.00% |
2007 | 1500 | Kilograms | 7.14% |
2008 | 1500 | Kilograms | 0.00% |
2009 | 1500 | Kilograms | 0.00% |