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| Commodity | 2006 | 2007 | 2008 | 2009 | 2010 |
| Sodium sulphides | $3,136,278 | $2,930,445 | $2,509,881 | $882,326 | $3,147,620 |
| Sulphides (excl. of sodium/zinc/cadmium); polysulphides, whether or not che ... | | | $9,326 | | |
| Total | $3,136,278 | $2,930,445 | $2,519,207 | $882,326 | $3,147,620 |
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