So let me get this straight, what we have is a super tax for the miners.
But what if say an overseas company comes down here and buys up say 50% of a company. And this overseas company happens to be a Steel producer. Surely they just sell the fines to themselves on the cheap, because thats why they are here - to control the price they get the fines for in the first place. Therefore smaller profit, if any for the mining company = bugger all tax...
Maybe I am wrong, but if you don't make a profit, you don't pay the tax - profit tax?