The pre-feasibility evaluation was based on a total of 73 million tonnes from only one pond that is reported to have an average grade of 0.218% copper and 7.46 g silver per tonne.
Based on $1(US) copper and $5(US) silver, the results of the study indicated an expected rate of return after taxes to be 25%. Potential copper recoveries were estimated at 47% and silver recoveries at 55%.
The study also estimated that capital costs would be $36.25 million for a 10-year operation based on 20,000 tonnes per day. Operating costs were estimated at $5.25 million.
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