Andrew's confident that in situ mining is a likely scenario and is aiming for AISC costs about half of the current REE prices and an initial 20 year mine life, i.e. a solid profitable operation.
The use of Mg sulphate is the key enabler. Environmentally harmless and delivers precisely the same results as ammonium sulphate,
Ann: Excellent Heap Leach Recoveries Ema Project, page-25
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