Changes to Pilbara Mineral Resources

RNS Number : 3535R

Rio Tinto PLC

28 February 2019

 

Changes to Pilbara Mineral Resources 

28 February 2019

On 28 February 2019 Rio Tinto announced to the Australian Securities Exchange (ASX) increases in Mineral Resources at its Pilbara iron ore operations in Western Australia.

This announcement was made in accordance with the Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves, 2012 (JORC Code) and the ASX Listing Rules. A copy of the full announcement is available on Rio Tinto's website at www.riotinto.com/reservesandresources.

In 2018, technical work was conducted across multiple deposits with over 700,000 m drilled. A portion of this has contributed to the significant changes in the following Mineral Resources:

	Mineral Resources
Music Hall / Old Vic	First reporting of Mineral Resources for Music Hall and Old Vic has added to Hamersley Iron: ·      225 Mt of Marra Mamba ore; and ·      58 Mt of Detrital ore.
Western Hill	Update to the Mineral Resources for Western Hill has added to the Robe River JV: ·      112 Mt of Brockman ore; ·      42 Mt of Brockman Process ore; and ·      12 Mt of Detrital ore.

Changes in Mineral Resources estimates at Rio Tinto's Pilbara iron ore operations between 31 December 2017 and 31 December 2018 are as follows:

	Tonnage (Mt)
2017 Mineral Resources	22,538
Music Hall / Old Vic increases	283
Western Hill increases	166
Net amount of other changes	332
2018 Mineral Resources	23,319

Rio Tinto's Mineral Resources are set out in full in its annual report released on 28 February 2019. Mineral Resources are reported as dry in-situ tonnages in addition to Ore Reserves.

Contacts

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Media Relations, United Kingdom Illtud Harri M [phone] David Outhwaite T [phone] M [phone] Media Relations, Americas Matthew Klar T [phone] Media Relations, Asia Grant Donald T [phone] M [phone]	Media Relations, Australia Jonathan Rose T [phone] M [phone] Matt Chambers T [phone] M [phone] Jesse Riseborough T [phone] M [phone]
Investor Relations, United Kingdom John Smelt T [phone] M [phone] David Ovington T [phone] M [phone] Nick Parkinson T [phone] M [phone]	Investor Relations, Australia Natalie Worley T [phone] M [phone] Rachel Storrs T [phone] M [phone]
Rio Tinto plc 6 St James's Square London SW1Y 4AD United Kingdom T [phone] Registered in England No. 719885	Rio Tinto Limited Level 7, 360 Collins Street Melbourne 3000 Australia T [phone] Registered in Australia ABN 96 004 458 404

 

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