2004 2005 2006 2007 2008 2009 2010 2011 $0 $500,000 $1,000,000 $1,500,000 $2,000,000
| Sub-Chapter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Cobalt ores and concentrates. | $31,050 | | | | | |
| Slag, dross (other than granulated slag) | $470,896 | $939,179 | $1,417,819 | $1,574,353 | $612,636 | $1,072,559 |
| Total | $501,946 | $939,179 | $1,417,819 | $1,574,353 | $612,636 | $1,072,559 |
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