|
| Commodity | 2005 | 2006 | 2007 | 2009 |
| Quartz, other than nat. sands | $17,479 | $7,469 | $11,667 | $47,108 |
| Quartzite, crude/roughly trimmed | | $220 | | |
| Quartzite, cut, by sawing/othw., into blocks/slabs of a rect. (incl. square ... | $9,418 | $11,823 | $22,543 | $15,436 |
| Total | $26,897 | $19,512 | $34,210 | $62,544 |
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