Directors & Management

Robert Benussi

Non-Executive Chairman

Mr Benussi was the founding shareholder and director of Bligh Resources Limited (ASX: BGH) holding the positions of Managing Director / Chief Financial Officer from 1 July 2011 to 8 October 2015.

Prior to this role he held various positions at Jupiter Mines Limited as Chief Financial Officer, Company Secretary and General Manager, Corporate from July 2006 to June 2011 and was a Non- Executive Director of Resource Star Limited (ASX: RSL) from July 2009 to March 2013.

Mark Calderwood

Managing Director

Mr Calderwood is a Chartered Professional Member of the Australasian Institute of Mining and Metallurgy, a Non-Executive Director of Amani Gold and Non-Executive Chairman of Manas Resources Limited.

Previously, Mr Calderwood spent more than a decade with Mt Edon Gold Mines, before moving onto Border Gold, a junior gold explorer which later became Moto Gold Mines. In 1995 he moved to Ghana to run gold explorer Leo Shield Exploration NL’s Ghana office. Leo Shield ultimately created Perseus Mining in 2003.

Mr Calderwood was Managing Director of ASX-100 listed gold producer Perseus Mining Limited, a West African Gold producer and explorer from its inception in 2003 until January 2013. Mr Calderwood steered Perseus from an exploration company to a +200,000oz per year producing gold company. Under Mr Calderwood’s leadership Perseus discovered more than 6.8 million ounces of gold, built the Edikan Gold Mine, Ghana, on time and on budget and started commercial production in January 2012.

Robert (Bob) Vassie


Mr Vassie is a Mining Engineer with 30 years’ international mining industry experience and 18 years’ experience in a range of senior management roles with Rio Tinto. He is currently the Managing Director & CEO of St Barbara Limited and has particular experience in operations management, resource development strategy, mine planning, feasibility studies, business improvement, corporate restructuring and strategic procurement.

Mr Vassie has been credited with engineering a strong operational and strategic turnaround at St Barbara since joining there in 2014.

Mark Turner


Mr Turner is a Mining Engineer with more than 30 years of experience in the resources sector. He has been responsible for the start-up and operation of mines in Australia, Africa and Asia. He was previously General Manager Operations of Resolute Mining Ltd, one of Australia’s largest gold producers and Chief Operating Officer (“COO”) of CGA Mining, before its takeover by B2 Gold for C$1.1 billion in 2010. He is currently the Chief Operating Officer of RTG Mining Inc.

Mr Turner holds a degree in Mining Engineering from the University of New South Wales and is Fellow of the AUSIMM.

Wei Xie


Ms Wei (Vicki) Xie is an accountant with more than 16 years’ experience in Accounting and Finance, as well as in fund raising, acquisition and private equity investment. Ms Xie has held Chief Financial Officer, accounting and Company Secretary roles in both China and Australia. Ms Xie holds a Bachelor of Accounting.

Ms Xie is a representative of German company Weier Antriebe und Energietechnik GmbH (Weier), which has an equity funding agreement with Tawana.

Craig Hasson

Chief Financial Officer and Commercial Manager

Mr Hasson is a Chartered Accountant with over 15 years of accounting and finance experience with a number of ASX listed companies. Since commencing his career at Ernst & Young, Mr Hasson has subsequently served in various senior finance and company secretary roles in the resources sector.

Mr Hasson holds a Bachelor of Commerce (B.Com.), Accounting and Finance from Curtin University.

Gareth Reynolds

Exploration Manager

Mr Reynolds is an exploration geologist with over 12 years of extensive, multi-commodity experience including Lithium (Wodgina and Mt Marion Lithium Projects), Iron Ore and Gold within Western Australia and West Africa . Mr Reynolds is well versed in all aspects of project management from initial scope, tender and approvals to design, implementation, interpretation and over-all supervision of multi-rig drill programmes. He has extensive experience in regional mapping, target generation, project evaluation and statutory reporting.

Mr Reynolds is a Member of the Australian Institute of Geoscientists (AIG) and holds a BSc in Geology from the University of Otago, New Zealand.

Noel O’Brien


Mr Noel O’Brien was appointed as Chief Technical Officer – Metallurgy and Processing in November 2017. Mr O’Brien, is a metallurgist and processing expert with experience in multiple lithium projects in Australia and internationally. Mr O’Brien who has recently been appointed as a non-executive Director of Birimian Ltd., is also a technical adviser to Kidman Resources Limited and was previously a technical consultant to Galaxy Resources and to the Bikita Minerals Lithium Project. Mr O’Brien has a deep understanding of the lithium market and possesses processing expertise in smelting, gravity separation, flotation, leaching and solvent extraction.