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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2011 |
| Quartz, other than nat. sands | $9,054 | $7,332 | $10,382 | $2,138 | $1,350 | $1,148 |
| Quartzite, cut, by sawing/othw., into blocks/slabs of a rect. (incl. square ... | $14,972 | $30,701 | $56,501 | $159,309 | $62,907 | $8,836 |
| Total | $24,026 | $38,033 | $66,883 | $161,447 | $64,257 | $9,984 |
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