Initial testing was on sulphide ores (only around the first 10 metres is oxide/transitional).
My take....
A small heap leaching operation to extract copper from the oxides is a possibility, subject to further studies (guess it depends on whether there is enough oxide ore at ND, LF or elsewhere to make the exercise worthwhile).
The main and predominant sulphide body would most likely be run through a conventional concentrator to produce a copper/gold con.
Ann: Excellent Metallurgical Results - Greater Duchess Project, page-27
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