Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2002 | 138 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | NA |
| 2003 | 127 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -7.97 % |
| 2004 | 196 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 54.33 % |
| 2005 | 78 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -60.20 % |
| 2006 | 46 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -41.03 % |
| 2007 | 10 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -78.26 % |
| 2008 | 20 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 100.00 % |
| 2009 | 45 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 125.00 % |
