Brian McMasterNon-Executive Director
Mr. McMaster has almost 20 years’ experience in the area of corporate reconstruction and turnaround and performance improvement and 20 years in the mining and exploration industry. Mr. McMaster’s recent experience includes founding Harvest Minerals and Jangada Mines, AIM listed companies with Potash and PGM projects in Brazil respectively, as well as numerous reorganisations and the recapitalisation and listing of 12 Australian companies. Mr. McMaster’s career to date includes significant working periods in the United States, South America, Asia, India and UK. Mr. McMaster was a founding director in venture capital and advisory firm, Garrison Capital Pty Ltd, and is also currently a director of a number of ASX and AIM listed companies.
Michael is the Founder and Executive Chairman of CASA Mining Limited. Before this he was the non-executive Chairman of Copperbelt Minerals Limited, a private company that discovered a copper-cobalt deposit in the Democratic Republic of Congo and was sold in 2012 for $191 million. He has also held senior roles at a number of businesses on AIM and was Managing Director of Reunion Mining PLC, a Main Market listed Africa focused mining and exploration company, with assets in Namibia and Zimbabwe. Michael holds an MBA in in Business Studies from the London Business School and has a B.Sc (Hons) in Geology from the University of St Andrews, Scotland.
Jonathan de Thierry
Jonathan de Thierry is an English graduate geologist with 25 years experience in mining and investment banking in Africa & Europe. He is a founder of Casa Mining and has raised significant capital for exploration and development of major DRC mineral projects.
Chief Operating Officer
Vassilios Carellas is a geologist by profession with extensive experience gained in the mining and exploration industry in Central Asia. Prior to joining Ortac Resources (UK), Vassilios held the post of Managing Director of Kryso Resources plc, an AIM listed company that he co-founded and listed in 2004. Before founding Kryso, Vassilios worked for two Canadian listed companies operating producing mines in various positions ranging from Mine Geologist through to Chief Geologist and General Manager.