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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Quartz, other than nat. sands | $7,154 | $21,915 | $182,714 | $383,834 | $225,831 | $216,756 | $374,161 |
| Quartzite, cut, by sawing/othw., into blocks/slabs of a rect. (incl. square ... | $132 | $1,465 | $1,151 | $9,051 | $8,125 | $47,709 | $913 |
| Total | $7,286 | $23,380 | $183,865 | $392,885 | $233,956 | $264,465 | $375,074 |
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