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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Quartz, other than nat. sands | $8,209,101 | $11,204,744 | $21,121,832 | $21,526,321 | $14,537,236 | $14,445,513 | $10,549,670 |
| Quartzite, crude/roughly trimmed | $1,222,909 | $1,211,506 | | | | | |
| Quartzite, cut, by sawing/othw., into blocks/slabs of a rect. (incl. square ... | $6,542,110 | $11,848,981 | $1,674,017 | $1,543,755 | $1,932,983 | $697,989 | $813,388 |
| Total | $15,974,120 | $24,265,231 | $22,795,849 | $23,070,076 | $16,470,219 | $15,143,502 | $11,363,058 |
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