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| Presentation on INFACON Nine, Quebec June 6th 2001 |
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| ABSTRACT In 1993 Tinfos became aware of the Hg emissions from the plant (99,2 kg in 1999). It was soon recognised that some Mn-ores were the main contributor to these emissions. Since then, Tinfos has tried to find a way of solving this problem. This paper describes the different strategies and processes that have been considered. An explanation is given why Tinfos has chosen the unknown/untried Miltec process, and not the other processes, already in use. The principles and the experiences of the Miltec process are outlined. All through the process Tinfos is working in corporation with SFT (The Norwegian Pollution Control Authority). MERCURY The toxicological effects of mercury are indisputable. Acute poisoning often results in lung oedema and influenza like symptoms. Long time exposure may cause damages to the neural system and the brain and give rise to deformities on embryos. Both The Norwegian Pollution Control Authority and the EU have put mercury and its compounds on warning lists. Mercury is put on the Norwegian "OBS list", which consist of compounds which may cause damages to health and environment, and the use and production of such should be minimised.
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