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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Quartz, other than nat. sands | $15,983 | $34,042 | $12,844 | $23,933 | $19,992 | $242,657 | $502,599 |
| Quartzite, cut, by sawing/othw., into blocks/slabs of a rect. (incl. square ... | $43,397 | $709 | $1,119 | $1,514 | $3,410 | $3,244 | $1,131 |
| Total | $59,380 | $34,751 | $13,963 | $25,447 | $23,402 | $245,901 | $503,730 |
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