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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Quartz, other than nat. sands | $11,654,326 | $13,561,270 | $12,246,716 | $14,650,501 | $12,812,132 | $22,060,529 |
| Quartzite, crude/roughly trimmed | $446,511 | $540,932 | | | | |
| Quartzite, cut, by sawing/othw., into blocks/slabs of a rect. (incl. square ... | $412,886 | $296,397 | $770,418 | $740,559 | $722,013 | $1,266,848 |
| Total | $12,513,723 | $14,398,599 | $13,017,134 | $15,391,060 | $13,534,145 | $23,327,377 |
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