METRO MINING LIMITED — Board/Management Information 2021

May 20, 2021

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Board Appointments

Metro Mining Limited (ASX:MMI) (“Metro”) is pleased to announce the following changes to the Metro Board:

• Mr. Douglas Ritchie and Mr. Simon Wensley will be appointed as Non-Executive Directors effective from the conclusion of Metro’s Annual General Meeting (AGM) on 25 May 2021.

• Following Metro’s AGM on 25 May 2021, Mr. Stephen Everett will step down as Chairman of the Board and Mr. Ritchie will be appointed in that position. Mr. Everett will remain as a Non-Executive Director

These appointments will significantly enhance the experience and skill set available to Metro in successfully managing and growing its bauxite business.

Mr. Ritchie and Mr. Wensley are highly respected and experienced executives in the resources sector with significant public company and management experience. Both have spent the majority of their professional careers in various divisions of Rio Tinto Ltd and have been intimately involved in the aluminium value chain.

DOUGLAS RITCHIE:

Doug has more than 40 years’ experience in the resources industry and worked for Rio Tinto from 1986 to 2013 and was a member of Rio Tinto’s Executive Committee and the Group Executive responsible for China.

He was appointed as Managing Director of Dampier Salt Limited (1997 – 2001), Head of Business Evaluation for Rio Tinto (2001 – 2005), Managing Director of Rio Tinto Diamonds (2005 – 2006), Chief Executive of Rio Tinto Coal Australia (2006 – 2007), Managing Director of Strategy for Rio Tinto (2007 – 2009), Chief Executive of the Energy Product Group (2009 – 2012) and Group Executive, Strategy until his retirement. He also served as the Chairman of the Rio Tinto Staff Superannuation Fund.

Doug is a Fellow of the Australian Institute of Mining and Metallurgy and a Fellow of the Australian Institute of Company Directors. He was formerly a Director of the Queensland Resources Council.

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SIMON WENSLEY:

Simon has more than 30 years’ experience in the metals and mining business. He spent 5 years at Kobe Steel Ltd in Japan, 20 years with Rio Tinto Ltd culminating in global senior management roles and is currently Co-founder and Director of MineVeritas Pty. Ltd., an advisor to investors in the resource industry.

Simon has experience in strategy development, commodity sales & marketing, logistics, M&A, value chain turn-around and capital projects.

Prior to being CCO of Rio Tinto’s Energy Group, he ran its bauxite, alumina sales and marketing division and was Chairman of Queensland Alumina Ltd. He has also served as Director at Rössing Uranium Ltd. and a number of coal businesses.

Chairman Stephen Everett commented,

“After 9 years as Chairman of Metro Mining, I feel the timing is right to transition over the role of Chair to Doug as the company embarks upon its next growth phase with the Stage 2 expansion.

Doug and Simon, both have deep experience in not only the bauxite industry but also in the Chinese resources industry and in building relationships with consumers of Australian raw materials. These are skills which will be critical to the long-term success of Metro. I look forward to working with both individuals moving forward.”

The Board also notes that as Mr. Philip Hennessy has resigned as a Director of Metro Mining that Resolution 3 referred to in the Notice of AGM is withdrawn.

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ASX: MMI | ACN 117 763 443

Further Info: P : +61 (0) 7 3009 8000 | E : info@metromining.com.au |W: www.metromining.com.au Contact: Simon Finnis, Managing Director & CEO | Mitchell Petrie Co Secretary | Duane Woodbury CFO Address: Level 2, 247 Adelaide St, Brisbane | GPO Box 10955, Brisbane Q 4000

This ASX Announcement has been authorised by, Metro Mining Director, Simon Finnis.

FORWARD LOOKING STATEMENT Statements & material contained in this ASX Release, particularly those regarding possible or assumed future performance, production levels or rates, commodity prices, resources or potential growth of Metro Mining, industry growth or other trend projections are, or may be, forward looking statements. Such statements relate to future events & expectations and, as such, involve known and unknown risks & uncertainties. Although reasonable care has been taken to ensure facts stated in this Release are accurate and/or that the opinions expressed are fair & reasonable, no reliance can be placed for any purpose whatsoever on the information contained in this document or on its completeness. Actual results & developments may differ materially from those expressed or implied by these forward-looking statements depending on a variety of factors. Nothing in this Release should be construed as either an offer to sell or a solicitation of an offer to buy or sell shares in any jurisdiction.

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