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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Quartz, other than nat. sands | $27,768 | $90,707 | $90,909 | $139,272 | $259,887 | $94,404 | $180,006 |
| Quartzite, crude/roughly trimmed | $91,282 | $31,176 | $3,662 | $209 | | | |
| Quartzite, cut, by sawing/othw., into blocks/slabs of a rect. (incl. square ... | $59,352 | $117,403 | $133,223 | | $58,789 | $70,805 | $50,157 |
| Total | $178,402 | $239,286 | $227,794 | $139,481 | $318,676 | $165,209 | $230,163 |
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