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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Quartz, other than nat. sands | $69,172 | $181,613 | $397,893 | $97,341 | $124,114 | $1,384,368 | $2,688,609 |
| Quartzite, cut, by sawing/othw., into blocks/slabs of a rect. (incl. square ... | $46,333 | $103,397 | | | | | $41,454 |
| Total | $115,505 | $285,010 | $397,893 | $97,341 | $124,114 | $1,384,368 | $2,730,063 |
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