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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Quartz, other than nat. sands | $4,526,207 | $19,067,970 | $38,601,658 | $11,764,737 | $3,234,748 | $5,534,822 | $12,929,790 |
| Quartzite, crude/roughly trimmed | $1,015,884 | $965,244 | | | | | |
| Quartzite, cut, by sawing/othw., into blocks/slabs of a rect. (incl. square ... | $2,348,615 | $3,090,173 | $4,965,178 | $4,313,191 | $5,532,832 | $6,873,723 | $7,374,590 |
| Total | $7,890,706 | $23,123,387 | $43,566,836 | $16,077,928 | $8,767,580 | $12,408,545 | $20,304,380 |
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