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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Quartz, other than nat. sands | $6,452 | $1,974 | $4,627 | $6,044 | $30,532 | $22,827 | $21,344 |
| Quartzite, cut, by sawing/othw., into blocks/slabs of a rect. (incl. square ... | $9,471 | | $1,445 | $1,015 | | | |
| Total | $15,923 | $1,974 | $6,072 | $7,059 | $30,532 | $22,827 | $21,344 |
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