Mr Costello has more than 20 years' professional experience and is recognised as one of Australia's leading project development and sustainability strategists across the resource sector. Martin co-developed a leading mining advisory business, Northern Resource Consultants which merged with multinational consulting group SLR Consulting to strengthen their advisory business. During his consulting life, Martin was retained by Evolution Mining over an 8-year period to provide strategic project development, ESG advice to the board and executive management team. Recently, Martin has held executive and non-executive management roles with a number precious and base metal companies.