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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Ash & residues (excl. from the mfr. of iron/steel), cont. hard zinc spelter ... | $210,130 | $1,143,151 | $1,633,060 | $1,089,159 | $889,512 | $1,370,347 | $1,573,749 |
| Ash & residues (excl. from the mfr. of iron/steel), cont. zinc other than h ... | $306,800 | $1,226,114 | $1,996,101 | $84,072 | $52,992 | $61,618 | $85,773 |
| Ash & residues (excl. from the mfr. of iron/steel) cont. mainly copper | | | | | | $29,960,921 | $5,052,282 |
| Total | $516,930 | $2,369,265 | $3,629,161 | $1,173,231 | $942,504 | $31,392,886 | $6,711,804 |
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