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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Manganese dioxide | $1,570,014 | $1,579,160 | $1,314,322 | $1,156,556 | $1,022,079 | $1,074,339 | $1,025,213 |
| Manganese oxides other than manganese dioxide | $96,186 | $37,340 | $348,925 | $311,874 | $110,556 | $448,521 | $334,576 |
| Total | $1,666,200 | $1,616,500 | $1,663,247 | $1,468,430 | $1,132,635 | $1,522,860 | $1,359,789 |
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