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Avalon Advanced Materials Invited to Submit Full Project Proposal Under Natural Resources Canada's Critical Minerals Research, Development and Demonstration and Global Partnerships Initiative Program

Avalon Advanced Materials Invited to Submit

Full Project Proposal Under Natural Resources

Canada's Critical Minerals Research,

Development and Demonstration and Global

Partnerships Initiative Program

Toronto, Ontario--(Newsfile Corp. - August 27, 2026) -

Avalon Advanced Materials Inc.

(TSX:

AVL) (OTCQB: AVLNF) ("Avalon" or the "Company") has been selected to advance to the next round of

project proposals under Natural Resources Canada's Critical Minerals Research, Development and

Demonstration and Global Partnerships Initiative program.

Natural Resources Canada ("NRCan") invited Avalon Advanced Materials Inc. ("Avalon" or the

"Company") on June 30, 2026 to submit a Full Project Proposal to the Critical Minerals Research,

Development and Demonstration and Global Partnerships Initiative ("CMRDD-GPI") program. The

invitation followed Avalon's March 2026 Expression of Interest.

Avalon has now submitted its Full Project Proposal and is seeking approximately C$20 million of NRCan

funding to advance the 100%-owned Basal Zone at the Nechalacho Rare Earth Elements Project toward

a construction-ready engineering basis and demonstrate a Canadian processing pathway for producing

separated rare earth oxides. The invitation to submit a Full Project Proposal follows Avalon's March

2026 Expression of Interest and is not a funding decision or a commitment of funding by NRCan.

The proposed program would support three principal workstreams: feasibility-level engineering,

including development of an AACE Class 3 capital cost estimate by Wood Canada Limited; validation

and optimization of Engina Corporation's Hybrid Supercritical Refining ("HSR") process using existing

Nechalacho concentrate; and the design, construction and operation of a modular demonstration plant to

be tested at a Canadian rare earth processing facility and subsequently relocated to Nechalacho for an

on-site demonstration.

"This proposal is focused on advancing Nechalacho toward a financeable development plan," said Scott

Monteith, President and Chief Executive Officer of Avalon. "By integrating feasibility engineering with

process validation and demonstration, we believe the program can accelerate project de-risking and

establish a stronger foundation for commercial development."

Avalon is pursuing a diversified capital strategy as Nechalacho advances, including government

programs, non-dilutive funding, strategic partnerships, potential offtake support and project-level

financing opportunities.

"Securing non-dilutive and strategic capital is an important part of our approach to advancing

Nechalacho," said Lorin Crenshaw, Chief Financial Officer of Avalon. "Our objective is to match the

appropriate source of capital to each stage of development and use government and strategic funding

wherever possible to accelerate project de-risking and use shareholder capital efficiently."

The CMRDD-GPI programs are designed to advance Canada's critical minerals strategy by supporting

pre-commercial research, development, and demonstration activities that strengthen critical mineral

value chains and accelerate the commercialization of innovative mining and processing technologies.

The programs support projects that validate the feasibility and viability of critical mineral technologies

and processes, with the GPI additionally supporting projects undertaken with trusted international

partners to strengthen secure, resilient and sustainable critical mineral supply chains.

Avalon's Nechalacho project directly aligns with these objectives by advancing an innovative rare earth

processing technology from pilot-scale validation toward commercial readiness. The proposed program

would focus on process optimization, engineering and demonstration using existing Nechalacho

concentrate, supporting the development of a domestic pathway for producing separated rare earth

oxides, including magnet-critical neodymium-praseodymium ("NdPr"), dysprosium and terbium. The

project would contribute to Canada's ability to establish a secure, sustainable and diversified North

American supply chain for critical rare earth materials.

Advancing Nechalacho Toward Commercial-Scale Processing

The proposed HSR process combines caustic pretreatment with supercritical CO2 extraction and has

the potential to simplify conventional rare earth processing, reduce water and reagent intensity and

improve recovery.

Avalon is seeking funding to advance the Nechalacho project's rare earth processing technology toward

commercial readiness, generating engineering, operating and product-quality data needed to support

subsequent commercial development and project-financing activities through engineering, process

validation and demonstration.

The program will include detailed engineering and an AACE Class 3 capital cost estimate by Wood

Canada Limited; testwork with Engina Corporation to optimize the Hybrid Supercritical Refining process

using existing Nechalacho concentrate; and the design, construction and operation of a modular,

containerized demonstration plant capable of processing approximately one tonne of concentrate per

day. The demonstration will validate the process at both a Canadian processing facility and the

Nechalacho site, using existing material and requiring no new mining, drilling or sampling, positioning

the technology for commercial-scale development.

Advancing Canada's Path to Rare Earth Oxide Production

Canada does not currently produce separated rare earth oxides. Nechalacho contains one of the highest

combined magnet rare earth grades among advanced North American rare earth projects, including

neodymium and praseodymium, as well as dysprosium and terbium. When global rare earth prices

declined significantly in 2013, the economic case for the project was no longer viable, despite no

fundamental change to the underlying resource. The key challenge is processing, and the proposed

program is designed to address this critical gap.

Nechalacho contains both light and heavy rare earth elements, including the magnet-critical elements

neodymium, praseodymium, dysprosium and terbium, as well as tantalum, niobium and zirconium. These

materials are used in permanent magnets, electric vehicles, renewable energy, advanced manufacturing

and defence applications.

Target products include NdPr oxide for the permanent magnets used in electric vehicle traction motors

and direct-drive wind generators, dysprosium and terbium oxides for magnet thermal stability, as well as

samarium, yttrium and a zircon co-product. These magnet materials support both commercial and

strategic applications, including electric vehicles, renewable energy, defence systems, sensors,

uncrewed systems and specialized manufacturing capabilities identified in Canada's Defence Industrial

Strategy released in February 2026.

About Avalon Advanced Materials Inc.

Avalon Advanced Materials Inc. is a Canadian critical minerals company focused on advancing lithium

and rare earth elements-two of the fastest-growing segments of the global energy transition. The

Company is developing strategic assets to participate in high-growth markets and support the build-out

of secure North American supply chains. Avalon is advancing the Nechalacho Rare Earth Elements and

Zirconium Project in the Northwest Territories, which contains all light and heavy rare earth elements, as

well as zirconium, tantalum, and niobium-critical minerals used in advanced technologies across the

communications, defense, advanced technologies, and energy sectors. The Company is also focused

on vertically integrating the Ontario lithium supply chain through the development of Lake Superior

Lithium Inc., Ontario's first midstream lithium hydroxide processing facility, located in Thunder Bay. This

facility is expected to serve as a cornerstone of North America's integrated battery materials supply

chain, transforming northern Ontario lithium into essential inputs for transportation, grid storage, and

advanced manufacturing.

For further information regarding Avalon Advanced Materials Inc., please visit

www.avalonadvancedmaterials.com

, email

[email protected]

, or call 416-364-4938.

Cautionary Statement Regarding Forward-Looking Information

This news release contains "forward-looking information" within the meaning of applicable Canadian

securities legislation. Generally, forward-looking information can be identified by the use of forward-

looking terminology such as "add" or "additional", "advancing", "anticipates" or "does not anticipate",

"appears", "believes", "can be", "conceptual", "confidence", "continue", "convert" or "conversion",

"deliver", "demonstrating", "estimates", "encouraging", "expand" or "expanding" or "expansion",

"expect" or "expectations", "forecasts", "forward", "goal", "improves", "increase", "intends",

"justification", "plans", "potential" or "potentially", "promise", "prospective", "prioritize", "reflects",

"robust", "scheduled", "suggesting", "support", "top-tier", "updating", "upside", "will be" or "will

consider", "work towards", or variations of such words and phrases or state that certain actions, events

or results "may", "could", "would", "might", or "will be taken", "occur", or "be achieved".

Forward-looking information is subject to known and unknown risks, uncertainties and other factors

that may cause the actual results, level of activity, performance or achievements of the Company to

be materially different from those expressed or implied by such forward-looking information, including

those risk factors discussed or referred to in the annual information form of the Company dated

November 26, 2025 (the "AIF") under the heading "Description of the Business - Risk Factors".

Forward-looking information is based on the reasonable assumptions, estimates, analysis and

opinions of management made in light of its experience and perception of trends, current conditions

and expected developments, as well as other factors that management believes to be relevant and

reasonable in the circumstances at the date that such statements are made, but which may prove to

be incorrect. Although the Company believes that the assumptions and expectations reflected in such

forward-looking information are reasonable, undue reliance should not be placed on forward-looking

information because the Company can give no assurance that such expectations will prove to be

correct. Although the Company has attempted to identify important factors that could cause actual

results to differ materially from those contained in forward-looking information, there may be other

factors that cause results not to be as anticipated, estimated or intended. There can be no assurance

that such information will prove to be accurate, as actual results and future events could differ

materially from those anticipated in such information. Accordingly, readers should not place undue

reliance on forward-looking information. The Company does not undertake to update any forward-

looking information, except in accordance with applicable securities laws.

To view the source version of this press release, please visit

https://www.newsfilecorp.com/release/311480