Senator BERNARDI (South Australia) (14:41): My question is to Senator Wong, the Minister representing the Minister for Climate Change and Energy Efficiency. I also refer the minister to the decision by BHP Billiton to indefinitely defer the $30 billion Olympic Dam expansion, which sees 13,000 potential new job opportunities in South Australia indefinitely deferred. Given that this is a devastating blow to South Australia, can the minister categorically rule out the carbon tax, the mining tax, increased union militancy or the axing of the promised company tax cuts as playing any role in making the Olympic Dam expansion a less attractive proposition than would otherwise have been the case? The PRESIDENT: The minister can answer that part of the question that refers to her portfolio.