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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Quartz, other than nat. sands | $33,146,205 | $42,651,678 | $46,392,598 | $62,154,539 | $25,461,253 | $65,494,183 | $68,328,889 |
| Quartzite, crude/roughly trimmed | $5,641,836 | $5,757,673 | | | | | |
| Quartzite, cut, by sawing/othw., into blocks/slabs of a rect. (incl. square ... | $5,400,051 | $7,197,812 | $13,683,055 | $16,601,388 | $10,392,144 | $21,980,303 | $28,067,105 |
| Total | $44,188,092 | $55,607,163 | $60,075,653 | $78,755,927 | $35,853,397 | $87,474,486 | $96,395,994 |
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