Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2006 | 7505 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | NA |
| 2007 | 24380 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 224.85 % |
| 2008 | 39254 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | 61.01 % |
| 2009 | 501 | Metric tons, zinc content of concentrate and direct shipping ore, unless otherwise specified | -98.72 % |
