The Australian Women's Register

RTZ Mining and Exploration Department files on Australia. Contain correspondence as well as technical reports and maps. ZC London: Records relating to the boards of NBHC Ltd, Southern Power Corporation P/L, Interstate Oil Ltd, IOL Petroleum Ltd and NBHC Holdings Ltd This collection consists of records relating to Australia from the RTZ (London) Mining and Exploration Department. They have been arranged in four series as sent from London: 1 Subject series 2 Numerical series 3 Oversize series 4 Maps An additional series contains drawings by Elizabeth Durack of CRA Exploration activities on Bougainville Island. The first four Series seem to have been amalgamated from previous series from other RTZ subsidiary or associated companies to become the RTZ Mining and Exploration Department Files. For example some files in the Subject Series are identifiable as having belonged to Rio Tinto Finance and Exploration Ltd., a subsidiary of RTZ. Other files in the Subject Series are of the RTZ Mining and Exploration Department proper. The reasons for, and date of, the amalgamation of files into the existing Series is unknown, although it probably occurred some time after Consolidated Zinc Corporation Ltd. and Rio Tinto Company Ltd. amalgamated to form Rio Tinto Zinc Corporation Ltd. in 1962.