$TMG $TMGLF | Trigg Minerals’ World-Class Antimony Team

Trigg Minerals has assembled a world-class team of antimony specialists, supported by proven commercial execution and strong U.S. government connectivity, to advance its critical antimony projects in the United States.

Andre Booyzen: Managing Director
A stalwart of the antimony industry well before the 2024 price surge linked to Chinese export restrictions. As General Manager of the Costerfield gold-antimony mine (Victoria), Andre held full strategic and operational control, covering product sales, off-take agreements, funding negotiations and mine operations. He also served as a director of the Voyager Group with antimony mining and processing interests in Central Asia.

Chris Gregory: Non-Executive Director
Geologist and mining executive with 22 years at Rio Tinto, including the Sepon Au-Cu discovery in Laos. Later Vice President of Exploration & Geology at Mandalay Resources, operator of Costerfield—Australia’s only current antimony producer.

David Fourie: Technical Adviser
Former COO of the SPMP antimony smelter in Oman (the largest outside China). With 25+ years in pyrometallurgical project development, David is currently Chief Technology Officer at MAGMEC, a U.S. firm specialising in critical-minerals extraction.

Wiehann Kleyhanns: VP, U.S. Downstream Operations
Exploration, production and resource geologist. Former Head of Business Development at the SPMP antimony roaster and Business Development Manager at MMG Limited (a Minmetals subsidiary), where he oversaw operational management for the US$600 million Kinsevere mine expansion in the DRC.

Ben Harris: U.S. Defence & Armaments Adviser
35+ years across military and civilian U.S. defence roles; decorated veteran and senior armaments leader. Chief of Staff at the Joint Program Executive Office for Armaments & Ammunition (JPEO A&A), overseeing a ~US$3 billion annual program.

Previously Deputy for Project Director Joint Services, supervising operations and modernisation of government-owned/contractor-operated ammunition facilities, logistics, demilitarisation, and research into “single point of failure” vulnerabilities in munitions infrastructure.

In December 2024, appointed Executive Director of the National Armaments Consortium (NAC), leading efforts to accelerate defence innovation via agile procurement pathways.

David Bernhardt: Adviser via The Bernhardt Group
Former 53rd U.S. Secretary of the Interior under President Donald J. Trump and the only person ever Senate-confirmed as Solicitor, Deputy Secretary and Secretary of the Department of the Interior—an agency stewarding more than one-fifth of U.S. land. He helped drive critical-minerals strategy and streamlined federal permitting. He currently serves on the Board of Directors of Trump Media & Technology Group (Truth Social) (appointed February 2025) and chairs the Center for American Freedom at the America First Policy Institute.