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Lumwana Water Management Systems

Dam holding capacity

568 trillion litres

Water storage facility capacity

Year 1

12 GL

Year 6 onwards

569 GL

Pumping rate

500m³ / hr per station.

TSF process water contribution

70% over the life of the mine

Diversion channel


35m base width, 0.1% slope


15m deep, 10m base width, 0.2% slope

Water course management

Minimum environmental flow

0.15m³ / sec

Discharge to the Lumwana East River

0.08m³ / sec, increasing to 0.26m³ / sec

Minimum Chimiwungo Stream flow

> 0.1m³ / sec

Tailings and water storage costs





Estimated rehabilitation costs for tailings dam


Tailings and water dam construction began

Fourth quarter 2005

Mine construction began


Raw water extraction system commissioned

May 2008

Water storage facility achieves maximum capacity


Mine owners

Equinox Minerals

Dam / water management contractors

Knight Piésold

Mine front end engineering

GRD Minproc

Mine EPC contractor

Ausenco International/Bateman Minerals and Metals of South Africa JV

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