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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Quartz, other than nat. sands | $3,145,350 | $2,874,165 | $4,900,685 | $4,925,127 | $3,424,425 | $4,081,372 | $7,478,663 |
| Quartzite, crude/roughly trimmed | $7,881,239 | $8,330,281 | $568,007 | | | | |
| Quartzite, cut, by sawing/othw., into blocks/slabs of a rect. (incl. square ... | $4,018,029 | $3,759,834 | $736,755 | $8,317,217 | $6,555,687 | $4,207,627 | $4,468,278 |
| Total | $15,044,618 | $14,964,280 | $6,205,447 | $13,242,344 | $9,980,112 | $8,288,999 | $11,946,941 |
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