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% |
| 2010 | 1800 | Metric tons, cobalt content | 195.08% |
| 2011 | 1600 | Metric tons, cobalt content | -11.11% |
| 2012 | 2500 | Metric tons, cobalt content | 56.25% |
