Mine remediation in New Zealand: Lessons from the (recent) past

Abstract

Two mines closed within 25yrs of each other, but with very different rehabilitation approaches. Lack of rehabilitation has led to serious, long term sediment contamination at Tui… particularly Mn, Cd and Zn Similar contamination of stream sediment would result from Golden Cross (Mn, Zn, As) but for ongoing WTP operation Need to identify these potential geochemical legacy issues before mining, and design an effective rehabilitation plan (or not mine).