Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2002 | 33000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | NA |
| 2003 | 3000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -90.91% |
| 2005 | 1300 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -56.67% |
| 2006 | 16414 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 1,162.62% |
| 2007 | 19549 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 19.10% |
| 2008 | 22694 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 16.09% |
| 2009 | 18126 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -20.13% |
| 2010 | 19976 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 10.21% |
| 2011 | 20000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 0.12% |
| 2012 | 20000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 0.00% |
