Senator CORMANN (Western Australia) (14:20): Mr President, I ask a supplementary question. When Treasury assessed the economic and fiscal impact of the carbon tax, did they consider that the European emissions trading scheme does not apply to the fugitive emissions from coalmining? Did Treasury consider that the Chinese, Indonesian and Colombian coalmining sectors do not pay, or expect to pay, a carbon price on their fugitive emissions? And did Treasury consider that the American surface coalmines are not even required to report fugitive emissions, let alone pay carbon tax on them?