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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Iron oxides & hydroxides | $3,722,374 | $5,036,346 | $6,298,180 | $5,676,445 | $6,168,158 | $7,878,980 |
| Earth colours cont. 70%/more by wt. of combined iron evaluated as Fe2O3 | $688,344 | $686,282 | $700,593 | $488,673 | $357,352 | $373,910 |
| Total | $4,410,718 | $5,722,628 | $6,998,773 | $6,165,118 | $6,525,510 | $8,252,890 |
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