SX/EW mixer settlers; liner lessons learned

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Ian Peggs, President, I-CORP INTERNATIONAL, writes in the November issue of International Mining that for cost reasons there has been a move away from stainless steel mixer/settlers to lower cost concrete basins lined with high density polyethylene sheet/geomembranes. The concrete provides the required strength and the HDPE functions, or should, solely as a barrier to protect the concrete. (more…)