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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Quartz, other than nat. sands | $669,752 | $673,778 | $882,852 | $1,153,906 | $509,235 | $440,938 | $949,464 |
| Quartzite, crude/roughly trimmed | $1,046,558 | $834,084 | | | | | |
| Quartzite, cut, by sawing/othw., into blocks/slabs of a rect. (incl. square ... | $238,947 | $224,019 | $1,459,307 | $1,820,850 | $1,086,225 | $1,220,427 | $1,533,881 |
| Total | $1,955,257 | $1,731,881 | $2,342,159 | $2,974,756 | $1,595,460 | $1,661,365 | $2,483,345 |
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