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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Manganese dioxide | $267,296 | $11,134 | $19,438 | $77,565 | $27,436 | $126,374 | $1,501,605 |
| Manganese oxides other than manganese dioxide | $333,204 | $242,608 | $284,487 | $308,864 | $327,143 | $381,523 | $378,770 |
| Total | $600,500 | $253,742 | $303,925 | $386,429 | $354,579 | $507,897 | $1,880,375 |
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