|
| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Worked slate & arts. of slate/agglom. slate | $14,182,000 | $15,081,000 | $18,639,000 | $20,262,000 | $14,854,000 | $18,742,360 | $20,118,127 |
| Total | $14,182,000 | $15,081,000 | $18,639,000 | $20,262,000 | $14,854,000 | $18,742,360 | $20,118,127 |
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