Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2002 | 828 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | NA |
| 2004 | 5067 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 511.96 % |
| 2005 | 7588 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 49.75 % |
| 2006 | 16831 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 121.81 % |
| 2007 | 18500 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 9.92 % |
| 2008 | 18000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -2.70 % |
| 2009 | 16000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -11.11 % |
