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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Quartz, other than nat. sands | $46,136 | $740,395 | $3,636,174 | $4,135,317 | $41,245 | $249,366 | $307,668 |
| Quartzite, crude/roughly trimmed | $274,335 | $1,426,907 | | | | | |
| Quartzite, cut, by sawing/othw., into blocks/slabs of a rect. (incl. square ... | $412,532 | $90,288 | $3,423,789 | $320,271 | $22,680 | $61,532 | $56,211 |
| Total | $733,003 | $2,257,590 | $7,059,963 | $4,455,588 | $63,925 | $310,898 | $363,879 |
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