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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Quartz, other than nat. sands | $1,659,280 | $2,106,107 | $5,190,322 | $8,457,234 | $7,271,638 | $8,830,970 |
| Quartzite, cut, by sawing/othw., into blocks/slabs of a rect. (incl. square ... | $223,641 | $70,778 | $91,516 | $8,929 | $8,145 | |
| Total | $1,882,921 | $2,176,885 | $5,281,838 | $8,466,163 | $7,279,783 | $8,830,970 |
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