AAMEG is administered and run by appointed Officers, who are supported by a Board of elected directors from member companies. Deloitte has agreed to act as auditor for AAMEG Ltd.


William (Bill) Witham


William has held senior executive roles across the Australian and African resources sector for over two decades and has worked directly in Namibia, Botswana, Cameroon, Congo, Gabon, Egypt, Niger and South Africa. He has further experience in member-based organisation leadership, including with the Chamber of Minerals & Energy WA (Government Relations and Policy), National Party WA (Corporate Director) and South Coast Natural Resource Management Inc. (Chair).

William brings an exceptional pedigree to the role, spanning corporate leadership in resource development in Africa, senior roles in resource sector representative bodies and direct experience in Government lobbying and negotiating at the State and Federal levels. He holds a Bachelor of Science degree from the University of Western Australia with honours in Geology.

Sarah Siva

Events & Membership Manager

Sarah has worked in France and Australia in various marketing, event management and executive support roles for Globe 24-7, Engie (Gaz De France SUEZ), ALSTOM Transport, AMEC FOSTER WHEELER France and AXWAY Sopra Group. Sarah is fluent in English and French and is always happy to help our members and stakeholders.

Giovanny Jefferson

Company Secretary

As a qualified accountant and company secretary with more than 10-year audit, not-for-profit and commercial experience, Giovanny, who is also the Company Secretary of Paydirt Media Pty Ltd (a member company), oversees AAMEG’s administration, compliance, accounting and other financial affairs. He has been AAMEG’s Company Secretary since its incorporation in April 2011.

Board Members

Tim Carstens


Tim Carstens has been Managing Director of Base Resources Ltd since its inception in 2008. During this time, it has acquired, designed, funded, developed and successfully operationalised the $310 million Kwale Mineral Sands Project Operation, Kenya’s first large scale mining project. Tim has been instrumental in laying the foundations for the company’s progressive governance, sustainability and social responsibility programs, which have secured broad local community and Kenyan government support for the Kwale Operation and the company. As well as continuing to manage the Kwale Operation, Base Resources is now developing the Toliara Project in Madagascar.

A Chartered Accountant by profession, Tim’s resources career spans more than 20 years, including senior executive roles with Perilya Limited, North Limited, Robe River Iron Associates, Iron Ore Company of Canada and St Barbara Mines Limited in operations, strategy, corporate development and finance, both in Australia and overseas. Tim was appointed Chairman of AAMEG in November 2015.

Peter De Leo


Peter De Leo, Managing Director of Lycopodium Limited is a civil engineer with over 29 years’ experience within the resources and infrastructure sectors. Successfully delivering many of Lycopodium’s pioneering and large-scale projects in Africa, Peter is a trusted advisor in the design, engineering and construction of resource projects. Peter brings first-hand understanding of the risks and challenges businesses face working on the continent, but also a sound appreciation of the benefits and opportunities that come with it.

Ben Gargett


Ben Gargett is a partner in PwC’s Assurance practice, based in Perth. Ben specialises in the resources sector, primarily mining, but also oil & gas. Through his role in driving PwC’s growth in the mid-tier and junior mining sectors, he developed a passion for supporting dynamic and growing organisations and helping companies to achieve and exceed their potential.Ben’s focus on the mining sector lead to the development of PwC’s Australia-Africa Practice, which he lead nationally. The Australia-Africa practice connects Australian companies with PwC’s leading African network, supported by our Australian team which understand their business, culture and objectives and connects our clients to partners on the ground where they need it.He has extensive experience in providing audit and related services to the resources sector globally, working with iconic Australia companies such as Fortescue Metals Group, Rio Tinto and BHP Billiton, large multinationals such as Newmont, Shell and Exxon Mobil and a range of companies across the junior and mid-tier mining sector.

Ben spent three years as PwC’s Global Mining Knowledge Manager, on the firm’s Global Mining Leadership Team, which included responsibility for supporting and growing PwC’s major mining account teams around the world. He is an Assurance partner specialising in the resources sector and has extensive experience in providing audit related services, merger and acquisition assistance and accounting advice to all sizes of mining, oil & gas producers and related services companies and is a frequent key speaker at conventions and conferences in the resources sector. Ben was appointed Deputy of AAMEG in November 2016.

Krista Bates


Krista is a corporate partner with Lavan and head of the Lavan Mining & Resources Group. She has extensive experience advising a diverse base of private and listed companies, private equity funds, governments and individuals, nationally and internationally on mergers, acquisitions and disposals (including by auction), private equity investments, joint ventures, management buy-outs, schemes of arrangements (both solvent and insolvent), corporate governance issues, commercial contracts and general corporate advice. Krista has led transactions with deal values ranging from $20,000 to $4.5 billion across multiple sectors and has an exceptional legal background (magic circle firms Clifford Chance and Linklaters) with over 18 years’ experience in the legal market including acting as Head of Africa for a large London law firm. Prior to moving to Perth, she was consistently over many years recognised as a Band One/Tier One leading lawyer by Chambers Global, IFLR and PLC Which Lawyer, and she has been praised for her strong commercial acumen and pragmatic approach to investing in Africa.

Andrew Dinning


Andrew Dinning is a founder and the President and CEO of Sarama Resources Ltd. He has over 25 years experience in the international mining arena having worked in the Democratic Republic of Congo, West Africa, UK, Russia and Australia. Andrew has extensive mine management, operations and capital markets experience and has spent most of his career in the gold sector. He was a Director, President and Chief Operating Officer of DRC based Moto Goldmines Ltd from 2005 to 2009. Andrew oversaw the company’s flagship Moto Gold Project (now Kibali Gold) develop from 4 million ounces of gold to +22 million ounces of gold and took the project from exploration to pre-development before Moto Goldmines was purchased by Randgold Resources and AngloGold Ashanti in October 2009.
Andrew has a MBA, a First Class Mine Managers Certificate (Western Australia) and a Bachelor of Engineering (Mining) degree.

Hannah Hudson


Hannah Hudson is currently the CFO and Company secretary for Nzuri Copper Limited. Ms Hudson is a finance professional with over 15 years’ experience working in the international mining sector, having worked in the Democratic Republic of Congo, in West Africa and in the Philippines. Ms Hudson was the CFO and Company secretary for RTG Mining from 2010 to 2014, overseeing the acquisition of Sierra Mining Limited and its Mabilo and Bunawan projects in the Philippines. Prior to this Ms Hudson was with CGA Mining Limited, which developed the largest gold mine in the Philippines and oversaw the company’s sale in 2013 to B2Gold Corp. for $1.1Bn.

Ms Hudson is a Chartered Accountant and holds a Bachelor of Arts and Bachelor of Commerce degrees

Grant Pierce


Grant Pierce, OAM
Executive Director Projects
BEng. (Mining), First Class Mine Managers Certificate (WA & NT), FAusIMM, Assoc AICD
Grant Pierce is a mining engineer with over 25 years of experience in both open-pit and underground mining operations and in a range of commodities including gold, copper, copper/cobalt, nickel, iron ore and rare earth elements. He has extensive management experience, having held numerous senior operational management roles with both mining and exploration companies operating in Africa.
Grant was a member of the development team that built Tanzania’s first modern gold mine, Resolute’s Golden Pride Project and was Operations Manager of the mine for its first 6 years of production. Other senior roles include Executive General Manager (Tanzania) for Barrick Gold Corporation during which time the Tulawaka Gold Mine came online and General Manager (Operations) for Perseus Mining Limited, from the environmental permitting phase through construction, to the Edikan Mine’s first gold pour.
Grant was awarded the Order of Australia Medal in 2003 for his personal contribution to social development in rural Tanzania. In 2006 he was also awarded Tanzania’s Zeze Award, the highest accolade for outstanding contribution to Tanzania’s cultural development and is also a founding Director of the not of profit organisation Bridge2Aid Australia.

Ron Sayers


An experienced Managing Director with strong leadership and communication skills, Ron Sayers is an effective team builder, has a proven capability in strategic work, is a successful deliverer of profitable growth and is pragmatic, hardworking and approachable.

He is currently the Managing Director of Ausdrill Limited (ASX:ASL), a diversified mining services company which he founded in Kalgoorlie in 1987.  Ausdrill has grown significantly in the past 30 years and has operations across Australia, Africa and the United Kingdom.  Ausdrill is a leader in providing services in contract mining, grade control, drill & blast, exploration, mineral analysis, procurement & logistics. The Ausdrill Group employs over 4,500 staff worldwide


Bill Turner AO


Bill Turner, former President and CEO of Anvil Mining Limited, retired in mid-2011 after 16 years with the company. He took Anvil into Africa in 1995 and since 2002, has overseen the building of two open pit copper mines and a tailings retreatment project in the Democratic Republic of Congo and the development of a culture with a strong focus on community engagement, capacity building and social development issues.

Bill has substantial experience in political and operational risk management and a good appreciation for the connections between enlightened approaches to community engagement, risk mitigation and developing a competitive advantage.

Bill has worked for more than 30 years in developing and emerging countries of SE Asia, the Middle East, the former Soviet Union and latterly Africa.

He is a geologist with a B.Sc. (Geology & Mineralogy) from University of Qld, an M.Sc. from James Cook University and an MBA from Monash University.

Bill was a founding Director of AAMEG, its Chairman from 2011 to early 2016, and since then has continued on as a Director. He is also Chairman of Geo40 Limited.

John Welborn


John Welborn is an experienced senior executive in the resources industry. A former International Rugby Union player, Mr. Welborn was previously the Head of Specialised Lending in Western Australia for Investec Bank. As a Director and Chief Executive, he has been responsible for driving growth in resource companies including Prairie Mining Ltd, Papillion Resources Ltd, and Equatorial Resources Ltd. Joining Resolute in July 2015, Mr Welborn is a champion for responsible and sustainable mining development in West and Central Africa and was named by MiningMx as one of the 100 Most Influential People in Africa’s Mining Industry.

Platinum Partners
Industry Partners

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