Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2002 | 138 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | NA |
| 2003 | 127 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -7.97% |
| 2004 | 196 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 54.33% |
| 2005 | 78 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -60.20% |
| 2006 | 46 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -41.03% |
| 2007 | 10 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -78.26% |
| 2008 | 7000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 69,900.00% |
| 2009 | 6000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -14.29% |
| 2010 | 7000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 16.67% |
| 2011 | 7000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 0.00% |
| 2012 | 7000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 0.00% |
