|
| Commodity | 2006 | 2007 | 2008 | 2009 |
| Natural barium carbonate (witherite), whether or not calcined, other than b ... | | $55,250 | $60,125 | $41,800 |
| Natural barium carbonate (witherite), whether or not calcined, other than b ... | $102 | | | |
| Total | $102 | $55,250 | $60,125 | $41,800 |
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