Cairn Hill mine is an iron ore mine formerly operated by IMX Resources and now by Cu-River Mining. It is located 55 km south-east of Coober Pedy in South Australia and produced 1.8Mtpa of a unique coarse-grained magnetite-copper DSO product. The product was mined and crushed on site before being trucked and railed to Port Adelaide, where it was then shipped to China. Cairn Hill was a joint venture between IMX Resources (51%) and Sichuan Taifeng (49%).