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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Quartz, other than nat. sands | $4,025,000 | $5,501,000 | $7,567,000 | $8,603,000 | $6,253,000 | $7,237,713 | $15,088,254 |
| Quartzite, crude/roughly trimmed | $3,260,000 | $4,771,000 | | | | | |
| Quartzite, cut, by sawing/othw., into blocks/slabs of a rect. (incl. square ... | $4,740,000 | $6,458,000 | $11,806,000 | $10,269,000 | $8,057,000 | $13,811,671 | $19,069,966 |
| Total | $12,025,000 | $16,730,000 | $19,373,000 | $18,872,000 | $14,310,000 | $21,049,384 | $34,158,220 |
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