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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Quartz, other than nat. sands | $1,205,532 | $1,329,612 | $1,106,004 | $1,338,637 | $1,041,000 | $1,865,687 |
| Quartzite, crude/roughly trimmed | $829,153 | $365,640 | | | | |
| Quartzite, cut, by sawing/othw., into blocks/slabs of a rect. (incl. square ... | $831,541 | $879,890 | $1,618,867 | $2,648,537 | $1,640,185 | $2,357,316 |
| Total | $2,866,226 | $2,575,142 | $2,724,871 | $3,987,174 | $2,681,185 | $4,223,003 |
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