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Abstraction for the period January to June totalled 2996925m3 with a progressive figure of 32229362m3 since December 1979 when pumping commenced. The average monthly consumption for the reviewed period was 499488m3, an increase of some 30% as compared with the previous monitoring period, primarily as a result of a decrease in return water from slimes dam changeovers and an increase in the head feed by 40000 tons a month.