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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Quartz, other than nat. sands | $2,730,459 | $3,021,354 | $4,422,366 | $3,856,024 | $4,911,904 | $5,019,563 | $7,704,690 |
| Quartzite, crude/roughly trimmed | $5,563,445 | $2,149,361 | | | | | |
| Quartzite, cut, by sawing/othw., into blocks/slabs of a rect. (incl. square ... | | $71,110 | $2,845,025 | $2,546,356 | $2,997,242 | $7,849,358 | $13,772,296 |
| Total | $8,293,904 | $5,241,825 | $7,267,391 | $6,402,380 | $7,909,146 | $12,868,921 | $21,476,986 |
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