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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Quartz, other than nat. sands | $1,007,132 | $1,203,165 | $2,312,482 | $3,280,828 | $3,860,885 | $4,433,109 | $9,993,950 |
| Quartzite, crude/roughly trimmed | $521,320 | $620,971 | | | | | |
| Quartzite, cut, by sawing/othw., into blocks/slabs of a rect. (incl. square ... | $3,749,836 | $4,047,816 | $5,328,886 | $5,557,057 | $5,845,874 | $6,440,427 | $3,376,182 |
| Total | $5,278,288 | $5,871,952 | $7,641,368 | $8,837,885 | $9,706,759 | $10,873,536 | $13,370,132 |
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