Avalon Advanced Materials Provides Year-to-Date Progress Update on Nechalacho Rare Earths Project

Company establishes dedicated rare earth project vehicle, opening Yellowknife office, advancing updates to its 2013 Definitive Feasibility Study (DFS) via a Preliminary Economic Assessment (PEA), and strengthening development pathway for one of North America's most strategically significant rare earth resources Toronto, Ontario--(Newsfile Corp. - May 19, 2026) - Avalon Advanced Materials Inc. (TSX: AVL) (OTCQB: AVLNF) ("Avalon" or the "Company") is pleased to provide a year-to-date progress update on its Nechalacho Rare Earth Elements and Zirconium Project, located in the Northwest Territories, as it advances efforts to build North America's supply and processing of critical rare earth elements essential to future technologies and supply chain security. Avalon has taken a series of important steps in 2026 to re-activate and advance Nechalacho as a strategic Canadian rare earth project capable of contributing to secure North American and allied supply chains.