|
| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Bituminous/oil shale & tar sands | | $374,000 | | $5,000 | | | |
| Bitumen & asphalt, nat.; asphaltites & asphaltic rocks | $171,000 | $5,502,000 | $1,737,000 | $2,347,000 | $3,000 | $24,000 | $124,000 |
| Total | $171,000 | $5,876,000 | $1,737,000 | $2,352,000 | $3,000 | $24,000 | $124,000 |
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