|
| Commodity | 2007 | 2009 | 2010 | 2011 |
| Natural barium carbonate (witherite), whether or not calcined, other than b ... | $1,690 | | $28,624 | $86,943 |
| Natural barium carbonate (witherite), whether or not calcined, other than b ... | | $5 | | $207 |
| Total | $1,690 | $5 | $28,624 | $87,150 |
|
|
