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| Commodity | 2005 | 2007 | 2008 | 2009 | 2010 |
| Quartz, other than nat. sands | $9,034 | $14,535 | $19,949 | $10,955 | $15,074 |
| Quartzite, cut, by sawing/othw., into blocks/slabs of a rect. (incl. square ... | | $14,471 | $66,405 | $11,797 | $19,205 |
| Total | $9,034 | $29,006 | $86,354 | $22,752 | $34,279 |
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