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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Quartz, other than nat. sands | $18,960 | $4,471 | $25,109 | $84,787 | $147,246 | $204,842 | $137,114 |
| Quartzite, cut, by sawing/othw., into blocks/slabs of a rect. (incl. square ... | $33,645 | $61,907 | $99,701 | $8,009 | | | $26,368 |
| Total | $52,605 | $66,378 | $124,810 | $92,796 | $147,246 | $204,842 | $163,482 |
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