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John Lea - Managing Director and CEO

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Who We Are

Geo40's Directors, Management and Consultants.


Bill Turner portrait

Bill Turner AO

Bill is a geologist with over 35 years of international experience in the mining industry. He is a former President & CEO of Anvil Mining Limited, a company founded in 1993 and acquired in 2012 by Minmetals Resources Limited for US$1.3B. Bill is a founding director of the Australia-Africa Minerals & Energy Group (‘AAMEG’) and was its Chairman from 2011 to February 2016.

John Lea portait

John Lea
Managing Director and CEO

John holds a Bachelor of Science in Chemistry and Applied Chemistry, a Bachelor of Engineering in Chemical and Materials Engineering and a Post Graduate Diploma in Business (Finance). John has over 15 years experience as a CEO and has deep experience in working with technology development both domestically and internationally. During the 1990’s, John worked on the extraction of minerals from waste geothermal fluids.

Peter Bradford portrait

Peter Bradford

Peter is a metallurgist with over 30 years experience in the minerals industry. He has extensive international operational, development and corporate experience and was the former CEO of Golden Star Resources, director of Anvil Mining and was CEO of Copperbelt Minerals Limited. Peter is currently the CEO of Independence Group [ASX:IGO], a diversified mining and exploration company listed on the ASX.

Joanne Warner

Joanne Warner

Joanne has over 20 years’ experience investing in natural resources. The former Head of Global Resources at Colonial First State she managed one of the largest resource specialist funds in the world. Joanne has first-hand experience of mines and operations, having undertaken more than 400 site visits in 42 countries. Joanne was awarded a D.Phil. in Chemical Crystallography from the University of Oxford.

Paul Smart

Paul Smart

Paul is a professional director and experienced finance professional. He is a Chartered Accountant and a long-standing member of the Institute of Directors and is currently a director of Intercity Group, Solarcity, Argus Group, Mercer Group and a number of other private companies. Paul has had senior executive experience in start-ups, public companies, multi nationals and an SOE. His experience included 12 years with Sky Network Television as its founding Chief Financial Officer and 4 years as Chief Financial Officer of Meridian Energy which included serving as a director of Southern Hydro, Australia’s largest renewable energy company.

Management and Consultants

Mike O'Sullivan

Mike O’Sullivan
Founder and Chief Operating Officer

Mike graduated from Otago University with a Bachelor of Mineral Technology (Hon). He was previously the Senior Vice President of Business Development with Anvil Mining and the Chief Operating Officer of Copperbelt Minerals. He has worked in operational and business development roles in New Zealand, Australia, Indonesia, Zimbabwe, South Africa, Algeria and the Democratic Republic of the Congo.

Michael Allen

Michael Allen
CFO and Company Secretary

Mike holds a Commerce Degree from UWA.  He is a Fellow of the Institute of Chartered Accountants, qualified with Arthur Andersen and worked with them in Perth, London and Sydney.  He has significant international operations development and corporate experience in 11 countries and held CFO/Company Secretary roles with a number of ASX companies, the most recent of which was PMI Gold, which was listed on the ASX and TSX.

Dr. Bill Bourcier

Dr. Bill Bourcier
Geothermal Consultant

Bill is a geochemist at the Lawrence Livermore National Laboratory in Livermore, California. He helped design the silica extraction process used at Mammoth Lakes geothermal power station. Bill was previously Research Director with Simbol Materials in the US, a company that is developing techniques to extract lithium from geothermal fluids.

Mark Jarand

Mark Jarand
Technical Services Manager

Mark has a Bachelors of Science in Chemistry from UCSD, USA. He has over 30 years of experience in applied research relating to the development, manufacturing, controlling of colloidal silica manufacturing processes.