Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2005 | 1600 | Metric tons, cobalt content | NA |
| 2006 | 1600 | Metric tons, cobalt content | 0.00 % |
| 2007 | 1600 | Metric tons, cobalt content | 0.00 % |
| 2008 | 1300 | Metric tons, cobalt content | -18.75 % |
| 2009 | 1200 | Metric tons, cobalt content | -7.69 % |
