Here BHP speaks about South Australia copper being to far from...

Here BHP speaks about South Australia copper being to far from surface compared with Chile. Therefore critical minerals in Australia like copper is now critical are unlikely to be developed like iron ore or coal because they are at a cost disadvantage to country's like Chile for copper and nickel to Indonesia.

if copper flats is a new shallow copper district, close to the surface, the it could potentially host Australia"a most economic open cut copper mines. Long way away, but just 1 intercept of 1% copper 0-100m below surface would get the BHP/RIOs interested because of the scale of these Zambia/Congo type deposits is huge.

https://www.australianresourcesandinvestment.com.au/2023/08/03/australias-critical-minerals-conundrum/