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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Chromium ores & concs. | $103,568,439 | $120,239,521 | $253,243,841 | $498,412,342 | $267,800,452 | $471,455,910 | $465,388,718 |
| Total | $103,568,439 | $120,239,521 | $253,243,841 | $498,412,342 | $267,800,452 | $471,455,910 | $465,388,718 |
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