I would also like to know how mining for Uranium, copper, gold and silver at Olympic dam was affected by the carbon tax (and pretty sure unaffected by mining tax too)....
1) the mining tax did not materially directly impact Olympic dam as it is an IOCG (iron ore, copper gold (with uranium and silver). the mining tax impact would only effect the iron. what the mining tax did do though was reduce the income on mines such as Pilbara iron ore and queensland coal. This reduced the capital available to be re-invested into Olympic Dam.
2) the carbon tax had a material impact on operations as mining is energy intensive. Especially Olympic Dam as it requires the running of desal plants.
The other major factor that prevented the expansion, worth mentioning, was the 7 year approval process to allow a big hole to get bigger. Unfortunately for South Australia, the combination of red and green tape has cost the state many jobs and much needed royalties.
