Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2002 | 10000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | NA |
| 2003 | 4000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -60.00% |
| 2006 | 11000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 175.00% |
| 2007 | 24000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 118.18% |
| 2008 | 29000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 20.83% |
| 2009 | 29000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 0.00% |
| 2010 | 29000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 0.00% |
| 2011 | 28000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -3.45% |
| 2012 | 28000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 0.00% |
