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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Quartz, other than nat. sands | $267,097 | $385,164 | $1,011,889 | $1,002,358 | $876,060 | $838,955 | $940,610 |
| Quartzite, crude/roughly trimmed | $2,339,309 | $1,591,334 | | | | | |
| Quartzite, cut, by sawing/othw., into blocks/slabs of a rect. (incl. square ... | $88,675 | $579,581 | $3,326,516 | $2,547,999 | $3,078,656 | $3,496,063 | $5,162,024 |
| Total | $2,695,081 | $2,556,079 | $4,338,405 | $3,550,357 | $3,954,716 | $4,335,018 | $6,102,634 |
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