Source: United States Geological Survey (USGS) Minerals Resources Program
Note: Check source table for details and footnotes
| Year | Production | Unit of Measure | % Change |
| 2002 | 520 | Metric tons, cobalt content | NA |
| 2003 | 400 | Metric tons, cobalt content | -23.08 % |
| 2004 | 460 | Metric tons, cobalt content | 15.00 % |
| 2005 | 620 | Metric tons, cobalt content | 34.78 % |
| 2006 | 600 | Metric tons, cobalt content | -3.23 % |
| 2007 | 600 | Metric tons, cobalt content | 0.00 % |
| 2008 | 590 | Metric tons, cobalt content | -1.67 % |
| 2009 | 610 | Metric tons, cobalt content | 3.39 % |
