Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2002 | 21200 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | NA |
| 2003 | 22081 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 4.16 % |
| 2004 | 23599 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 6.87 % |
| 2005 | 13784 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -41.59 % |
| 2006 | 8052 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -41.58 % |
| 2007 | 1000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -87.58 % |
