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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Quartz, other than nat. sands | $1,190,330 | $1,045,237 | $1,190,854 | $1,735,103 | $896,131 | $746,843 | $1,068,261 |
| Quartzite, crude/roughly trimmed | $40,742 | $44,370 | | | | | |
| Quartzite, cut, by sawing/othw., into blocks/slabs of a rect. (incl. square ... | $116,392 | $286,925 | $1,168,024 | $159,323 | $95,434 | $56,089 | $126,371 |
| Total | $1,347,464 | $1,376,532 | $2,358,878 | $1,894,426 | $991,565 | $802,932 | $1,194,632 |
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