John Armstrong

President & COO North Arrow Minerals

Dr. John P. Armstrong is a seasoned mining executive with more than 34 years of experience in mineral exploration, mining, and government in Canada and Botswana. He spent over a decade with Lucara Diamond Corp., serving most recently as Vice President, Technical Services (2018-2024), where he led the technical team through pre-feasibility and feasibility study phases for the Karowe Underground Expansion. Dr. Armstrong was also responsible for modelling Karowe's unique diamond size distribution and implementing innovative sensor-based XRT recovery circuits designed to preserve the value of the mine's largest, highest-value stones. Dr. Armstrong currently serves on the board of directors of Tectonic Metals Inc., He holds a Ph.D. in Geology (1997) and an Honours B.Sc. in Geology (1989) from the University of Western Ontario and is a registered Professional Geologist with NAPEG. Dr. Armstrong is a Qualified Person under National Instrument 43-101.