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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Quartz, other than nat. sands | $24,711 | $5,396 | $20,535 | $3,714 | $2,460 | $5,535 | $7,423 |
| Quartzite, cut, by sawing/othw., into blocks/slabs of a rect. (incl. square ... | $572 | $9,463 | | | | | $20,519 |
| Total | $25,283 | $14,859 | $20,535 | $3,714 | $2,460 | $5,535 | $27,942 |
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