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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Quartz, other than nat. sands | $6,739,188 | $8,660,277 | $9,300,577 | $13,757,018 | $14,870,923 | $19,868,135 | $24,960,587 |
| Quartzite, crude/roughly trimmed | $4,511,313 | $1,862,523 | $2,336,793 | $461,386 | | | |
| Quartzite, cut, by sawing/othw., into blocks/slabs of a rect. (incl. square ... | $1,090,958 | $2,129,575 | $4,284,929 | $506,417 | $5,286,951 | $6,254,151 | $6,463,880 |
| Total | $12,341,459 | $12,652,375 | $15,922,299 | $14,724,821 | $20,157,874 | $26,122,286 | $31,424,467 |
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