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| Commodity | 2006 | 2007 | 2008 |
| Sodium | $108,813 | $282,863 | $160,567 |
| Alkali/alkaline-earth metals other than sodium & calcium | $209,289 | $51,311 | $126,361 |
| Rare-earth metals, scandium & yttrium, whether or not intermixed/interalloy ... | $2,655 | $3,059 | $1,755 |
| Mercury | $13,974 | $25 | $2,615 |
| Total | $334,731 | $337,258 | $291,298 |
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