I'm still trying to understand the environmental benefits side...

I'm still trying to understand the environmental benefits side of things. Because this is magnetite it requires much more processing than dig and truck type operation so the power and energy requirements are far greater meaning more fossil fuels would need to be burnt to produce iron ore. Maybe at China end it will be better but definitely I can't see any benefit in Australia.

And remember that every company will paint the rosiest picture to sell their story to the masses hence experience and knowledge are important when looking at projects and trying to do your own research. Don't always believe everything someone else says as a lot of info can be misleading without proper understanding.