Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2002 | 3000 | 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 | 0.00% |
| 2004 | 1500 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -50.00% |
| 2005 | 1500 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 0.00% |
| 2006 | 983 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -34.47% |
| 2007 | 716 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -27.16% |
| 2008 | 3663 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 411.59% |
| 2009 | 4952 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 35.19% |
| 2010 | 4897 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -1.11% |
| 2011 | 5000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 2.10% |
| 2012 | 15000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 200.00% |
