Quantum Critical Metals Initiates Rubidium Recovery Program to Advance North American Critical Minerals Supply

Company advances refining-focused strategy to deliver domestically sourced, high-value critical minerals amid growing geopolitical supply chain uncertainty Vancouver, BC – TheNewswire - May 26, 2026 – Quantum Critical Metals Corp. (TSX.V: LEAP | OTCQB: ATOXF | FSE: 86A1 ) (“Quantum” or the “Company”) is pleased to announce the initiation of advanced metallurgical test work targeting rubidium recovery from its NMX East Rubidium-Gallium-Cesium Critical Minerals Project located in Québec .