Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2002 | 300 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | NA |
| 2003 | 300 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 0.00% |
| 2004 | 300 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 0.00% |
| 2005 | 3000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 900.00% |
| 2006 | 1000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -66.67% |
| 2007 | 2000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 100.00% |
| 2008 | 4700 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 135.00% |
| 2009 | 3400 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -27.66% |
| 2010 | 5500 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 61.76% |
| 2011 | 6900 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 25.45% |
| 2012 | 7000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 1.45% |
