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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Manganese dioxide | $27,764 | $4,872 | $16,141 | $3,974 | $241,911 | $541,519 | $1,008,475 |
| Manganese oxides other than manganese dioxide | $108,586 | $46,244 | $210,844 | $236,459 | $63,541 | $321,238 | $376,525 |
| Total | $136,350 | $51,116 | $226,985 | $240,433 | $305,452 | $862,757 | $1,385,000 |
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