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[[Rio Tinto]], one of the world's largest mining companies, has major interests in uranium mining in Australia and in Namibia. It is the world's second largest producer of uranium. <ref>Rio Tinto, "[http://www.pmc.gov.au/umpner/submissions/197_sub_umpner.pdf Rio Tinto Submission to the Review of Uranium Mining, Processing and Nuclear Energy in Australia]", August 2006.(210kb Pdf)</ref>