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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Quartz, other than nat. sands | $1,167,584 | $944,176 | $1,114,830 | $1,488,721 | $1,329,559 | $1,216,694 | $861,325 |
| Quartzite, crude/roughly trimmed | $789,161 | $398,244 | | | | | |
| Quartzite, cut, by sawing/othw., into blocks/slabs of a rect. (incl. square ... | $146,453 | $146,786 | $1,242,186 | $1,657,515 | $502,136 | $1,179,328 | $2,007,101 |
| Total | $2,103,198 | $1,489,206 | $2,357,016 | $3,146,236 | $1,831,695 | $2,396,022 | $2,868,426 |
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