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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Sodium | $754 | $3,080 | $537 | $13,659 | $2,250 | $493 |
| Alkali/alkaline-earth metals other than sodium & calcium | $8,016 | $9,486 | $1,400 | $241 | $1,117 | $243 |
| Rare-earth metals, scandium & yttrium, whether or not intermixed/interalloy ... | $252 | | | | | |
| Mercury | $1,262 | $68 | | $8,708 | $100 | |
| Total | $10,284 | $12,634 | $1,937 | $22,608 | $3,467 | $736 |
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