Board & Management


John Richards

Non Executive Chairman

John Richards is an economist with more than 35 years' experience in the resources industry; holding various positions within mining companies, investment banks and private equity groups. He has been involved in a wide range of mining M&A transaction in multiple jurisdictions.  Mr Richards is an Independent Non-Executive Director; holding previous positions at Normandy Mining Ltd, Standard Bank, Buka Minerals and Global Natural Resources Investments; he joined the Saracen Mineral Holdings Ltd Board in 2019 as a Non-Executive Director.

Bruce McFadzean

Managing Director

A qualified mining engineer with more than 40 years’ experience in the global resources industry, Mr McFadzean has led the financing, development and operation of several new mines around the world.  His skills are driving the development of Sheffield’s world-class Thunderbird Minerals Sands Project.
Mr McFadzean’s professional career includes 15 years with BHP Billiton and Rio Tinto in a variety of positions and four years as Managing Director of successful Western Australia gold miner Catalpa Resources Limited (ASX:CAH). Under his management, Catalpa’s market capitalisation grew from $10 million to $1.2 billion following the Evolution merger.

Bruce Griffin

Commercial Director

Bruce Griffin most recently held the position of Senior Vice President Strategic Development of Lomon Billions Group, the world’s third largest producer of high-quality titanium dioxide pigments. Bruce previously held executive management positions in several resource companies, including acting as the Chief Executive Officer and a director of TZ Minerals International Pty. Ltd. (TZMI), the leading independent consultant on the global mineral sands industry, World Titanium Resources, a development stage titanium project in Africa and as Vice President Titanium for BHP Billiton.

Gordon Cowe

Non-Executive Director

A qualified mechanical engineer with over 30 years' experience, Gordon has had significant involvement in leading business start-up, planning and delivery of multiple complex projects including Mining & Mineral Processing, Oil & Gas and Resources based infrastructure projects globally.  He has enjoyed an extensive career with leading contractors (including Bechtel and Worley Parsons) and project owners on a wide range of projects.

Ian Macliver

Non-Executive Director

Ian Macliver is the Executive Chairman of Grange Consulting Group Pty Ltd & Grange Capital Partners. Prior to establishing Grange he held positions in various listed and corporate advisory companies.  His experience covers all areas of corporate activity including capital raisings, acquisitions, divestments, takeovers, business and strategic planning, debt and equity reconstructions, operating projects and financial review and valuations.  Mr Macliver is the Non-Executive Chairman of Western Areas Ltd and Non-Executive Director Otto Energy Ltd.


Stuart Pether

Stuart Pether

Chief Operating Officer

Stuart Pether is a mining professional with over 25 years’ experience in the resources industry. His experience includes project development, technical studies, mine operations and corporate management. Most recently, Mr Pether was the CEO of Kula Gold Limited.  He was previously Vice President, Project Development for Evolution Mining Chief Operating Officer for Catalpa Resources. Mr Pether holds a Bachelor of Engineering (Mining) from the Western Australian School of Mines, is a member of the Australasian Institute of Mining and Metallurgy and a committee member of WASM Alumni.

Mark Di Silvio

CFO and Company Secretary

Mr Di Silvio is a CPA and MBA qualified finance professional with over 30 years’ resources industry experience. Mr Di Silvio’s professional career includes gold operations and project development experience both in Australia and overseas, senior finance roles with Woodside Petroleum Limited in Australia and Africa prior to joining Centamin Plc (TSX, LSE listed) as CFO. His most recent position was CFO for Toronto listed Mawson West Limited. Mr Di Silvio has  significant experience in financial management, debt and offtake funding and product offtake agreements which is a key requirement for Sheffield as it advances the development of the Thunderbird Mineral Sands Project.

Neil Patten-Williams

General Manager, Marketing

Mr Patten-Williams has more than 20 years’ experience in the resources industry, including five years as Sales and Marketing Manager for established mineral sands producer the Doral Group, where he was responsible for marketing, logistics and sales globally. Mr Patten-Williams has a strong background in both zircon and titanium mineral products. Prior to his appointment as Sales and Marketing Manager at Doral, he was Operations Manager of the Doral Fused Materials Plant in WA for five years responsible for all aspects of safety, operations and maintenance and also spent five years as the company’s Zirconia Operations Manager. As a metallurgist with hands-on operational experience Mr Patten-Williams has a unique blend of commercial, global marketing and operational skills in the mineral sands industry.

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