|
| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Worked slate & arts. of slate/agglom. slate | $115,670,379 | $111,860,376 | $137,384,349 | $137,634,052 | $102,548,905 | $110,688,792 | $115,837,748 |
| Total | $115,670,379 | $111,860,376 | $137,384,349 | $137,634,052 | $102,548,905 | $110,688,792 | $115,837,748 |
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