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| Commodity | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Quartz, other than nat. sands | $21,417 | $5,177 | $12,781 | $2,241 | $3,806 | $13,724 |
| Quartzite, cut, by sawing/othw., into blocks/slabs of a rect. (incl. square ... | | | | | $1,682 | |
| Total | $21,417 | $5,177 | $12,781 | $2,241 | $5,488 | $13,724 |
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