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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Quartz, other than nat. sands | $84,011 | $809,430 | $760,206 | $440,609 | $30,783 | $50,819 |
| Quartzite, crude/roughly trimmed | $188 | | | | | |
| Quartzite, cut, by sawing/othw., into blocks/slabs of a rect. (incl. square ... | $26,652 | $23,634 | $54,497 | $17,700 | $31,741 | $112,075 |
| Total | $110,851 | $833,064 | $814,703 | $458,309 | $62,524 | $162,894 |
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