American Antimony Advances ALS-Led Flotation Testing on MTA Samples to Develop U.S.-Sourced High-Grade Concentrates as Initial Head Grades Exceed 30% Sb, Placing Bernice Canyon Among the Highest Antimony Head Grades Evaluated Globally

Core Viewpoint - American Antimony Corporation, operating as Xtra Energy Corp., has received initial head grade results from ALS Metallurgy following the shipment of approximately 400 kilograms of high-grade antimony material sourced from its Antimony King stockpiles in Nevada [1] Group 1 - The high-grade material was derived from historic stockpiles generated during past production at the Antimony King Mine [1] - The shipment to ALS was intended for advanced flotation testing, high-grade concentrate development, and processing flowsheet optimization [1] - This announcement follows a previous disclosure made by the company on January 7, 2026 [1]