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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Manganese dioxide | $1,636,364 | $1,352,236 | $1,279,677 | $2,374,320 | $2,333,984 | $2,423,900 |
| Manganese oxides other than manganese dioxide | $1,409,755 | $2,308,284 | $907,603 | $385,698 | $247,286 | $404,880 |
| Total | $3,046,119 | $3,660,520 | $2,187,280 | $2,760,018 | $2,581,270 | $2,828,780 |
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