Agent TypeOrganisationIdentifierUMA-AG-000000100HistoryThe Australian company, Rio Tinto Limited, has its origins in 1905 when the Consolidated Zinc Corporation Ltd was formed in England to treat zinc waste at Broken Hill. This company merged with The Rio Tinto Company Ltd in 1962 to form The Rio Tinto-Zinc Corporation. At the same time the Australian interests of Consolidated Zinc & The Rio Tinto Company merged to form Conzinc Rio Tinto of Australia Ltd, later CRA Ltd. The two companies, RTZ Corp and CRA combined to form a dual-listed company with one board and head-office in London. The Australian arm, Rio Tinto Ltd, is listed on the Australian Stock Exchange.