Geoff Brayshaw

Non-Executive Chairman

Geoff Brayshaw had over 35 years’ experience as a Chartered Accountant in public practice before retiring from practice in June 2005. He practiced primarily in audit and assurance, other areas of practice being corporate finance and litigation support. He gained wide experience in corporate and financial accounting for the exploration and mining industry, including iron ore and nickel.


Geoff is a Fellow of both the Institute of Chartered Accountants in Australia and the AICD. He was National President of the ICAA in 2002. Until recently he was a Non-executive Director and Chairman of the audit committee of both Fortescue Metals Group Limited and AVEA Insurance Limited and is a former member of the Board of the Western Australian Small Business Development Corporation.


Geoff has served on the Poseidon Board since February 2008 and became Chairman on 1st October 2018.

Mr Rob Dennis

Managing Director & CEO

Rob Dennis is a mining engineer with over 40 years’ experience in the nickel, copper, gold and alumina industries.  Rob has recently returned to Poseidon from his previous role  as COO for the Independence Group (IGO) where he was  responsible IGO’s nickel, copper, zinc and gold operation, including overseeing the development and commissioning of IGO’s Nova Project.  He joined the Poseidon Nickel Board in January 2014 following a 7 year tenure with Poseidon as Chief Operating Officer. Previous experience includes senior roles with Adita Birla Minerals Ltd, Lionore Australia, Great Central Mines, and Western Mining Corporation.