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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Manganese dioxide | $6,030,478 | $5,210,935 | $6,797,978 | $8,926,620 | $10,735,114 | $9,203,821 | $2,486,006 |
| Manganese oxides other than manganese dioxide | $75,060 | $77,358 | $75,185 | $56,314 | $59,670 | $160,281 | $147,036 |
| Total | $6,105,538 | $5,288,293 | $6,873,163 | $8,982,934 | $10,794,784 | $9,364,102 | $2,633,042 |
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