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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Manganese dioxide | $704,007 | $354,978 | $379,452 | $16,136 | $350,808 | $453,730 |
| Manganese oxides other than manganese dioxide | $124,230 | $142,269 | $225,794 | $87,943 | $4,043 | $7,587 |
| Total | $828,237 | $497,247 | $605,246 | $104,079 | $354,851 | $461,317 |
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