To: Company Announcements Office From: Francesca Lee Date: 15 - - PDF document

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To: Company Announcements Office From: Francesca Lee Date: 15 - - PDF document

Jul 17, 2023 115 likes •210 views

To: Company Announcements Office From: Francesca Lee Date: 15 March 2018 Subject: Presentation relating to Cadia Northern Tailings Dam Please find attached, for release to the market, a presentation to be given by the Managing Director and

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To: Company Announcements Office From: Francesca Lee Date: 15 March 2018 Subject: Presentation relating to Cadia Northern Tailings Dam Please find attached, for release to the market, a presentation to be given by the Managing Director and Chief Executive Officer to shareholders and analysts. The webcast of this presentation, commencing at 11am this morning, is accessible on the Company’s website and will be available for replaying at the end of the briefing. Yours sincerely Francesca Lee Company Secretary

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Market update Cadia Northern Tailings Facility

Sandeep Biswas Managing Director and Chief Executive Officer 15 March 2018

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Cadia - Site overview

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Cadia Hill

  • pen pit

Cadia East subsidence Waste rock dumps Commercial, administration & processing Northern Tailings Facility Southern Tailings Facility Water storage Location of embankment slump

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SLIDE 4

Embankment slumped dimensions

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~270m ~370m ~100m Estimated time of failure : 7:00pm 9 March 2018 Initial backs scarp cracks – 9 March Circular failure cracks first

  • bserved 9 March
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SLIDE 5

Images looking north east

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SLIDE 6

Local community engagement

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Prior to slump

  • Relocated residents of 2 houses on Newcrest-owned land below the tailings dams
  • Briefed private landholders below the tailings dams and requested that they restrict

access to their properties Subsequent to slump

  • Notified regulatory authorities
  • Effected road closures
  • Engaged with local community
  • Briefed local mayors, State Members of

Parliament, Federal Members of Parliament

  • Briefed local media
  • Briefed local landholders and enabled site

inspection

  • Responded to queries via Cadia Community

Hotline

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SLIDE 7

Monitoring & mitigation plan

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  • Full-time remote monitoring will

provide notice of any change in deformation trend/velocity

  • New ground movement technology

has been implemented

  • Entire NTSF embankment wall

being monitored

  • STSF has been inspected with no

signs of any issue. Continual monitoring being set up

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SLIDE 8

Update on recovery program

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  • Fully engaged with NSW regulators

‒ Prohibition notice issued on depositing tailings in Northern Tailings Facility

  • Sourcing remote-operated equipment to conduct repair work
  • Progressing work on alternative tailings solutions eg. Cadia Hill open pit
  • Progressing work on constructing temporary containment bund within vicinity of area

where embankment for Northern Tailings Facility was breached.

  • Assessing Options of recommencing underground operations and stockpiling

material

  • Force Majeure declared on Copper Concentrate Products
  • Work on Mine and Plant Expansion Pre-feasibility studies continuing in parallel with

recovery program

  • Cadia is not expected to meet its production guidance for 2018 financial year.
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SLIDE 9

Looking forward

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  • Primary focus:

‒ safety of our people and the community ‒ the highest standards of environmental compliance

  • Maintain constant dialogue with the regulators, government and local community
  • Re-deploying workforce to recovery operations and other value-adding activities
  • Exploring and evaluating multiple recovery options – applying expert advice
  • Manage the consequential impacts (e.g. customers; suppliers; ongoing studies)