I'd say QLD sorry mate.Mining won't go off in SA, they have already cancelled one major project down there.
NT is the next mining state, fastest growing economy in AUS, they have some really good geology, they have gold, copper, Uranium, Iron Ore, some promising diamond sites, massive amounts of natural gas, Tungsten and Molybdenum just to name some.
Shale Gas and Coal Seam Gas motherfucker.