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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Quartz, other than nat. sands | $1,088,167 | $821,935 | $652,304 | $613,521 | $348,423 | $867,922 | $117,161 |
| Quartzite, crude/roughly trimmed | $761,833 | $331,977 | | | | | |
| Quartzite, cut, by sawing/othw., into blocks/slabs of a rect. (incl. square ... | $1,055,696 | $2,145,161 | $2,933,709 | $3,070,623 | $4,513,887 | $5,213,400 | $5,495,158 |
| Total | $2,905,696 | $3,299,073 | $3,586,013 | $3,684,144 | $4,862,310 | $6,081,322 | $5,612,319 |
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