There'll be heaps of things to talk about regarding Stage (1) @Dabble010. WMX 'only' need to produce an additional 50koz - 60koz p.a on top of what they're currently producing (circa 50koz - 60koz p.a). Should be a walk-in-the-park with their concentrates play
I recall AXM had a bit of difficulty for a variety of reasons (i.e. seismic geology, equipment maintenance, U/G grades & delivery of tonnage) mining Wiluna underground to produce 60koz, although they always fancied themselves being 100koz producers in their corporate presentations.