Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2008 | 1000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | NA |
| 2009 | 2000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 100.00% |
| 2010 | 8000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 300.00% |
| 2011 | 3000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -62.50% |
| 2012 | 15000 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 400.00% |
