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| Commodity | 2005 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Quartz, other than nat. sands | $5,850 | $13,600 | $10,163 | $27,194 | $14,158 | $20,275 |
| Quartzite, cut, by sawing/othw., into blocks/slabs of a rect. (incl. square ... | | | | | | $6,788 |
| Total | $5,850 | $13,600 | $10,163 | $27,194 | $14,158 | $27,063 |
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