Ricus Grimbeek is an experienced mining executive with nearly 30 years of progressive experience in the resource sector, and has a proven track record working at all levels of the business. Before joining Trevali, he was the Chief Operating Officer of Vale Base Metals North Atlantic, where he held responsibility for the overall operating and financial performance of 16 mining and refining operations in four countries. He was also previously the President and COO of South32 Australia, overseeing 6 operations in Australia and Colombia. He has also served as Asset President of Aluminium Australia, Head of Group HSEC for BHP Billiton, President and COO of BHP Billiton’s Ekati Diamond Mine, Executive Vice President Mining and Concentrating for Lonmin Platinum. Ricus holds a Bachelor of Engineering (Mining) from the University of Pretoria, has completed the Management Development Program from the University of Orange Free State, and holds an Advanced Certificate in Mine Ventilation from the Chamber of Mines.