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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Quartz, other than nat. sands | $693,264 | $952,870 | $1,025,216 | $1,221,944 | $812,287 | $1,199,223 | $1,402,195 |
| Quartzite, crude/roughly trimmed | $836,405 | $950,564 | | | | | |
| Quartzite, cut, by sawing/othw., into blocks/slabs of a rect. (incl. square ... | $1,377,078 | $1,766,597 | $2,752,603 | $2,729,598 | $1,981,116 | $2,311,283 | $2,857,038 |
| Total | $2,906,747 | $3,670,031 | $3,777,819 | $3,951,542 | $2,793,403 | $3,510,506 | $4,259,233 |
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