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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Quartz, other than nat. sands | $646,787 | $862,568 | $1,325,177 | $1,112,913 | $202,475 | $886,290 | $769,657 |
| Quartzite, crude/roughly trimmed | $175,013 | $326,518 | | | | | |
| Quartzite, cut, by sawing/othw., into blocks/slabs of a rect. (incl. square ... | $200,723 | $247,713 | $130,582 | $72,524 | $53,451 | $125,580 | $29,314 |
| Total | $1,022,523 | $1,436,799 | $1,455,759 | $1,185,437 | $255,926 | $1,011,870 | $798,971 |
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