Ann: JORC Resource Estimate Update for Berenguela, page-67

Simple copper silver sulphide would use flotation to produce and sell a copper con with silver credits. The manganese mineralisation prevents this process route and requires a more expensive roast and or leach plus downstream separation and refining to produce saleable products. Reason why Dugald river deposit sat in limbo for decades and the reason why the company got this one from SSRI on the cheap.

But you bought it so you should understand this better than I.

Strategy is right, if you have something more expensive to gate, find more of it and higher grade zones to boost economies of scale and revenue per tonne. Copper price increase into 2020 will help.