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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Manganese dioxide | $1,649,937 | $2,256,766 | $2,924,874 | $4,139,165 | $4,247,559 | $4,085,425 | $4,647,428 |
| Manganese oxides other than manganese dioxide | $4,379,255 | $7,053,775 | $5,619,074 | $4,833,274 | $2,757,572 | $3,157,359 | $2,950,454 |
| Total | $6,029,192 | $9,310,541 | $8,543,948 | $8,972,439 | $7,005,131 | $7,242,784 | $7,597,882 |
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