Jimone I don't think you are correct. A gravity recovery plant works on density difference and can be set up to recover sulphides as well as gold, sulphides generally being more dense than the gangue. Gold-rich sulphides can be sold or reground and sent through a more sensitive gravity circuit.
I do wonder though how we have gone from 9 g/t tailings to 9-84 g/t tailings to high grade tailings with gold locked up in sulphides. It seems to me to be the result of Chinese whispers. unless it's all on a social medium which I do not frequent.
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