Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2002 | 60000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | NA |
| 2003 | 60000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 0.00% |
| 2004 | 62000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 3.33% |
| 2005 | 65000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 4.84% |
| 2006 | 85000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 30.77% |
| 2007 | 95000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 11.76% |
| 2008 | 70000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -26.32% |
| 2009 | 70000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 0.00% |
| 2010 | 70000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 0.00% |
| 2011 | 70000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 0.00% |
| 2012 | 70000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 0.00% |
