Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2003 | 7000 | Kilograms, contained selenium | NA |
| 2004 | 7000 | Kilograms, contained selenium | 0.00% |
| 2005 | 8315 | Kilograms, contained selenium | 18.79% |
| 2006 | 7500 | Kilograms, contained selenium | -9.80% |
| 2007 | 7500 | Kilograms, contained selenium | 0.00% |
| 2008 | 7500 | Kilograms, contained selenium | 0.00% |
| 2009 | 7500 | Kilograms, contained selenium | 0.00% |
