A by product of the production of zinc at Risdon is sulphuric acid, which is used on site to make farm fertilisers. Imported phosphate rock is the other raw material used. Most production is shipped to mainland Australian ports.
IMPACT FERTILISERS, Summary - 2000-01 | ||
Units | Value | |
| Production, single superphosphate | tonnes | 152,903 |
| Employment |  | |
| - Employees | no. | 90 |
| - Contractors | no. | 6 |
| - Total | no. | 96 |
Source: Mineral Resources Tasmania, Annual Review 2000-2001. | ||
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