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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Manganese dioxide | $7,421,910 | $1,507,814 | $633,977 | $807,912 | $551,893 | $627,788 | $844,363 |
| Manganese oxides other than manganese dioxide | $5,536,843 | $4,685,097 | $6,328,533 | $17,349,360 | $11,048,769 | $10,638,868 | $12,703,734 |
| Total | $12,958,753 | $6,192,911 | $6,962,510 | $18,157,272 | $11,600,662 | $11,266,656 | $13,548,097 |
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