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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Quartz, other than nat. sands | $1,937,974 | $2,795,261 | $4,493,003 | $22,513,392 | $10,138,758 | $28,100,748 | $74,281,907 |
| Quartzite, crude/roughly trimmed | $1,475,014 | $1,812,891 | | | | | |
| Quartzite, cut, by sawing/othw., into blocks/slabs of a rect. (incl. square ... | $538,714 | $297,306 | $4,525,091 | $3,684,797 | $1,608,905 | $4,376,750 | $8,376,209 |
| Total | $3,951,702 | $4,905,458 | $9,018,094 | $26,198,189 | $11,747,663 | $32,477,498 | $82,658,116 |
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