BHP Billiton could yet play a role in the development of OZ Minerals' Carrapateena mine in South Australia, with OZ suggesting the economics of a crucial rail link to the project would be helped if BHP's Olympic Dam mine were tied in.
Olympic Dam lies between OZ's only operating mine, Prominent Hill, and its best development option, Carrapateena, and with the South Australian government investigating whether it can help OZ build a rail link between its two assets, Olympic Dam is fast becoming part of the conversation.
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In another world, GWA, the various above-rail freight operators or even the ARTC would be crawling all over this kind of business opportunity. Olympic Dam isn't going away any time soon - the ore body apparently has a 200-year economic life at current extraction rates!