Mining wastes ‘a problem’
Wellington reporter The disposal of mining wastes and heavy metals in water is an increasing problem in New Zealand, according to Dr C. H. Hendy, of the Chemistry department of Waikato University.
He told a metals seminar held by the Royal Society that this could lead to excess concentrations of metals — including iron, manganese, lead and sulphate — in the water.
This could lead to the chemical scavenging of some heavy metals such as copper and lead, while others like zinc and cadmium, and possibly arsenic and mercury, stayed in the solution, he said. An example of this, Dr Hendy said, was the Tui mine tailings at Te Aroha in the Hauraki, where the impregnated water ran through public land and parks and was accessible to children.
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Press, 24 September 1984, Page 6
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130Mining wastes ‘a problem’ Press, 24 September 1984, Page 6
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