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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Quartz, other than nat. sands | $3,776,344 | $3,950,779 | $4,156,339 | $5,022,035 | $2,853,645 | $2,268,291 | $4,347,928 |
| Quartzite, crude/roughly trimmed | $107,108 | $367,924 | | | | | |
| Quartzite, cut, by sawing/othw., into blocks/slabs of a rect. (incl. square ... | $16,099 | $17,175 | $69,453 | $250,000 | $7,444 | $548,740 | $814,157 |
| Total | $3,899,551 | $4,335,878 | $4,225,792 | $5,272,035 | $2,861,089 | $2,817,031 | $5,162,085 |
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