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| Commodity | 2005 | 2006 | 2007 | 2008 | 2010 | 2011 |
| Sodium sulphides | $111,000 | $91,000 | $85,000 | $85,000 | $36,000 | $43,000 |
| Sulphides (excl. of sodium/zinc/cadmium); polysulphides, whether or not che ... | | | $221,000 | $44,000 | $43,000 | $17,000 |
| Total | $111,000 | $91,000 | $306,000 | $129,000 | $79,000 | $60,000 |
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