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metre valley by utilising the laterite available in the slimes stream. On- site tests proved the concept was feasible and the mine now has a cycloned wall over 15 metres high with a vertical freeboard of seven metres or more- well within international standards. Tailings management might be the dirty, uninteresting side of mining, but it is a vital component in the overall profitability of a plant and a key component when it comes to safety and environmental issues. Having established itself as the leading consultant and supplier in southern Africa, CP& C is steadily being invited to lend its expertise in other mining parts of the world. CP& C has established a sister company which operates the dams on behalf of the client under management contracts. The company, Cyclone Engineering Projects ( Pty) Ltd is managed by a dynamic team from the offices of CP& C in South Africa. - Editorial research by Robbie Hodgson Cyclone Projects & Consulting July 09 www. bus- ex. com 49 client with operating manuals and maintenance schedules. Cyclone Projects & Consulting has created any number of industry innovations. For example, at a diamond mine in Botswana, slurry from the kimberlite diamond bearing rock ( high in slimes) was being deposited within expensive earth- constructed impoundments and very little water was being recovered. CP& C, in the first such plant in the world, showed that by leaving the grit in the slimes stream at the scrubbing plant, cyclones could be used to produce a stable wall and more than double the amount of water being reclaimed. Again, at a gold mine in the Republic of Mali, West Africa, CP& C demonstrated that cyclone walls were possible with tailings made up of 10 per cent laterite and 90 per cent saprolite- a material considered unsuitable for cyclone construction. CP& C was set the challenge of devising a system capable of building a safe and stable slimes dam main wall through an 1800

50 www. bus- ex. com July 09 Rich resources