Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2002 | 14900 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | NA |
| 2003 | 12000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -19.46 % |
| 2004 | 15500 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 29.17 % |
| 2005 | 17500 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 12.90 % |
| 2006 | 13476 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -22.99 % |
| 2007 | 12206 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -9.42 % |
| 2008 | 12200 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -0.05 % |
| 2009 | 12000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -1.64 % |
