Changes to Pilbara Ore Reserves and Mineral Resources


02 March 2017

Included in Rio Tinto’s annual Ore Reserves and Mineral Resources tables, released to the market today as part of its 2016 Annual report, are changes in Ore Reserves and Mineral Resources in Pilbara iron ore deposits in Western Australia.

The updated Ore Reserves and Mineral Resources are reported in accordance with the Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves, 2012 (JORC Code) and the ASX Listing Rules. As such, the reported changes relating to three Pilbara iron ore deposits require the additional supporting information set out in this release and its appendices. Ore Reserves and Mineral Resources are quoted on 100 per cent basis. Rio Tinto’s interests are listed on pages 6, 7, 11, and 14.

Rio Tinto’s Ore Reserves and Mineral Resources are set out in full in its 2016 Annual report.

During 2016, increases to estimated iron Ore Reserves have been delivered as part of the ongoing resource development drilling program designed to maintain Ore Reserves coverage ahead of mining depletion rates. During the same period, estimated Mineral Resources increased by 350 Mt.