That would be half allright if it were completely true. The truth of the matter is that Aussies 'dig the stuff out of the ground" for foreign multinationals who own the mines and they ship it out and pocket the profits.
For example BHP is 8% Aussie owned & Rio 12% Aussie owned and while 36% of FMG is owned by Twiggy, obviously this holding is held offshore as is Clive Palmer's Minerology share.
Which begs the question: Is this high level of foreign ownership of our most valueable natural resources a threat to our NationalSecurity regardless of who these foreign owners are?