Independent Non-executive Director and Chair

Samantha Sharif (LLB (Hons), LLM (Hons), Grad Dip CSP, CMInstD)

Samantha Sharif is a Professional Director with extensive leadership experience in infrastructure, resources, safety critical industries, as well as investment and capital markets.
Ms Sharif is an experienced Board and Board Committee Chair, and a Chartered Member of the Institute of Directors.
Samantha has experience as a CEO and has also practised as a senior commercial lawyer, with post-graduate legal and finance qualifications. Current governance roles include: SIL/MFL Mutual Funds – Director, NZ Shareholders Association – Deputy Chair, Motor Trades Association Group – Director, Chair of Audit & Risk Committee, Chair of Investment Committee, Museum of Transport & Technology (MOTAT) – Director, Dept of Corrections Audit & Risk Committee – External Member


John Upperton

Mr Upperton has a background in both Commercial and Residential Construction Project Management. Alongside these projects, Mr Upperton has garnered considerable experience in aspects of the RMA and District Planning requirements, including successfully representing himself in Environment Court.

Mr Upperton has 16 years’ experience as Managing Director of a Limited Company. He has served on and chaired several community organisations over a 25 year period.

Mr Upperton has also previously held a senior management role for one of NZ’s leading Manuka Honey producers, being responsible for the negotiation and placement of bee hives across the North Island involving more than 300 landowners.

Independent Non-executive Director

Michael Stiassny (LLB, BCom, FCA, CFInstD)

Michael has over 40 years’ experience as a Chartered Accountant, specialising in strategic advice, insolvency, and turnaround activities.

Michael is currently Chair of Ngāti Whātua Ōrākei Whai Rawa Limited and Tower Limited, and a director of a number of other companies.

Michael is a Chartered Fellow of The Institute of Directors in NZ (Inc) (CFInstD) and is also past President of the Institute of Directors. He is a Fellow of Chartered Accountants Australia and  New Zealand (retired) and a life member of RITANZ


Independent Non-executive Director

A Victor Rabone (BE Civil Engineering)

Mr Rabone is a Geotechnical Engineer with over 20 years of operational experience in all facets of mining gained in New Zealand and internationally. He has specialised expertise in hard rock underground mining.  

Victor’s experience includes feasibility analysis, management of operations, geotechnical stability analysis, ground support design and installation, drill and blast tunnel development, rail haulage system’s design and installation, mineral processing, refining and environmental management.

Victor holds a number of certifications required to manage a hard rock underground gold mining operation including Controlled Substance License, Handlers Certificate for blasting, he holds an A Grade Tunnel Manager certification and a Site Senior Executive qualification.

Victor has in recent years been dedicated fulltime to the planning and development of the Broken Hills Gold Mine in the Puketui valley, Coromandel Peninsula . 

Victor is a member of a number of professional organisations; Engineering NZ, NZ Geomechanics Society, NZ Tunnelling Society, the International Society for Rock Mechanics and Rock Engineering and the Railway Technical Society of Australasia.

Victor has had experience in the project management of a variety of construction activities such as installation of screw piles, seismic reinforcement using stone columns, geotechnical drilling programmes, alluvial mining operations and underground mining and tunnelling projects.