Arsenic contamination of mine and metallurgical waters has long been recognized as a global problem. More stringent guidelines, based on demonstration of potential toxicity to humans and ecological receptors, have motivated regulators and operators to address both legacy sites and existing or future operational discharges to mitigate potential impacts. The safe disposal of material considered to be hazardous is a natural part of good housekeeping for any industrial development. This is particularly so for the mining industry, which historically was not always well managed in this aspect and as a result, has a high-political profile today.

Arsenic can occur in...

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