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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Quartz, other than nat. sands | $432,445 | $1,438,399 | $1,005,765 | $696,317 | $618,407 | $362,090 | $287,450 |
| Quartzite, crude/roughly trimmed | | $189,374 | | | | | |
| Quartzite, cut, by sawing/othw., into blocks/slabs of a rect. (incl. square ... | $84,361 | $37,139 | $300,447 | $164,932 | $132,464 | $114,261 | $142,731 |
| Total | $516,806 | $1,664,912 | $1,306,212 | $861,249 | $750,871 | $476,351 | $430,181 |
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