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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Quartz, other than nat. sands | $2,360,058 | $2,315,127 | $2,708,566 | $3,021,312 | $2,408,947 | $2,113,752 | $1,990,025 |
| Quartzite, crude/roughly trimmed | $3,214,154 | $2,409,865 | | | | | |
| Quartzite, cut, by sawing/othw., into blocks/slabs of a rect. (incl. square ... | $765,085 | $95,244 | $2,570,285 | $1,886,211 | $940,462 | $1,488,938 | $3,201,921 |
| Total | $6,339,297 | $4,820,236 | $5,278,851 | $4,907,523 | $3,349,409 | $3,602,690 | $5,191,946 |
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