American Tungsten & Antimony (ASX:AT4) Casper Adson appointed Chief Executive Officer
American Tungsten & Antimony has appointed Casper Adson as Chief Executive Officer, effective 13 July 2026. According to the announcement, Mr Adson's mandate is to drive the company's metallurgical and downstream processing workstreams to convert AT4's in ground antimony and tungsten into defence grade products.
Highlights
Casper Adson appointed Chief Executive Officer, effective 13 July 2026.
Mr Adson brings more than 20 years of experience in critical minerals processing and metallurgy across titanium, rare earths, synthetic rutile and vanadium.
Mr Adson will drive the company's metallurgical and downstream processing workstreams to convert AT4's in ground antimony and tungsten into defence grade products.
Andre Booyzen has been appointed Executive Director, Government Relations and Marketing after stepping down as Managing Director.
The company intends to advance metallurgical programs targeting military specification antimony trisulfide (Sb₂S₃), antimony metal and ammonium paratungstate (APT).
Mr Adson is described by the company as a critical minerals executive and operational leader with more than 20 years of experience in the resources sector across technical, commercial and investor relations roles in titanium, rare earths, synthetic rutile, activated carbon, vanadium and gold.
His career spans exploration, metallurgical studies, pilot plants, project development, PFS and DFS studies, commissioning, operations management, process flowsheet development, strategic partnerships, offtake and capital raising.
The announcement states that he holds First Class Honours degrees in Chemical Engineering and Applied Chemistry, is completing an MSc in Minerals & Energy Economics, is a Chartered Member of IChemE and Engineers Australia, and most recently served as chief executive of an ASX listed company.
The announcement states that the company intends to advance metallurgical programs targeting military specification antimony trisulfide (Sb₂S₃), an essential priming compound in munitions, detonators and tracer rounds.
AT4's objective is to develop product qualified to relevant US military specifications (e.g. MIL A 159), alongside commercial grade antimony metal and trioxide, from Antimony Canyon feedstock.
The company also intends to target ammonium paratungstate (APT), the intermediate product for finished tungsten products including tungsten metal powder, tungsten oxide, tungsten carbide and tungsten heavy alloy.
The company states that its strategic vision is to become a vertically integrated, conflict free supplier of antimony and tungsten to the United States.
The announcement also states that processing and refining represent the bottleneck within both supply chains and that China controls the overwhelming majority of global antimony refining and ammonium paratungstate processing.
It further states that a credible downstream US domestic processing capability materially strengthens project economics, underpins feasibility studies and binding offtake agreements, and enables production of higher value qualified products such as antimony metal, antimony trisulfide and APT.
The company states that it produced its first antimony ingots from Antimony Canyon material in February 2026 and received a Metso Ausmelt concept study and plant design indicating a pathway to a smelter within approximately 2 years.
The announcement also states that the capability to produce defence qualified products is increasingly a prerequisite for access to US Government support programs, including Defense Production Act Title III funding, Department of Defense and Defense Logistics Agency initiatives, the National Defense Stockpile, the Ordnance Technology Consortium and other export finance and energy programs.
AT4 Chief Executive Officer, Casper Adson, commented:
“AT4 has Tier 1 US assets in tungsten and antimony and early proof it can produce metal. My focus is to build a disciplined, qualification led mine to metal production strategy for antimony and tungsten and to attract strong, aligned partners.”
Andre Booyzen will step down as Managing Director and has been appointed Executive Director, Government Relations and Marketing.
In his new role, he will focus on government engagement, strategic partnerships, funding initiatives, investor relations and corporate marketing, while continuing to lead engagement with US federal and state governments, defence and funding agencies as the company executes its mine to metal critical minerals strategy.
American Tungsten & Antimony's portfolio includes the Antimony Canyon Project in Utah, the Tennessee Mountain Tungsten Project in Nevada and the Dutch Mountain Tungsten Project in Utah, which includes the fully permitted Dutch Mountain Processing Facility and the Fraction Lode mine.
The announcement states that there is no guarantee that AT4 will meet applicable specifications or eligibility criteria, or that any grant, award or funding will be offered or secured.