|
| Commodity | 2005 | 2007 | 2010 | 2011 |
| Quartz, other than nat. sands | $1,000 | $14,000 | $97,000 | $38,000 |
| Quartzite, crude/roughly trimmed | $3,000 | | | |
| Quartzite, cut, by sawing/othw., into blocks/slabs of a rect. (incl. square ... | $1,000 | $11,000 | $11,000 | $15,000 |
| Total | $5,000 | $25,000 | $108,000 | $53,000 |
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