PMET Launches Relationship with Koch Technology Solutions to Advance Value-Added Caesium Chemicals from Shaakichiuwaanaan
PMET Resources Inc.
Suite 900 - 1801 McGill College, Montreal, Qc, Canada, H3A 1Z4
www.pmet.ca / TSX: PMET / ASX: PMT / OTC: PMETF / FSE: R9GA
PMET Launches Relationship with Koch Technology Solutions to
Advance Value-Added Caesium Chemicals from Shaakichiuwaanaan
April 15, 2026 – Montreal, QC, Canada April 16, 2026 – Sydney, Australia
KOCH TECHNOLOGY SOLUTIONS, PART OF KOCH INC., TO EVALUATE ADVANCED PROCESSING
PATHWAYS FOR PMET’S GLOBALLY SIGNIFICANT CAESIUM RESOURCE
HIGHLIGHTS
• Strategic caesium testwork program launched with Koch Technology
Solutions, a division of Koch Inc. – one of the largest privately held companies
in the United States.
• The testwork program aims to convert Shaakichiuwaanaan caesium-rich
pollucite concentrates into various high-value caesium chemical products.
• The program will evaluate Koch Technology Solutions ’ innovative recovery
techniques, using proprietary methods for caesium chemicals production.
• This strategic approach provides a potential pathway into critical US industrial
supply chains for defense, space, energy and advanced electronics.
• Founded in 1940, Koch Inc. operates in sectors including refining, chemicals,
energy and technology, with over 120,000 employees globally.
• The program supports the potential development of a new high -margin
product stream from Shaakichiuwaanaan alongside lithium, building
commercial momentum following PMET’s caesium discovery.
• Following the publication of its caesium Resource, PMET has continued to
explore both commercial and supply chain pathways aimed at maximizing the
discovery’s value.
PMET CEO, President, and Managing Director Ken Brinsden comments: “Shaakichiuwaanaan hosts
what we believe to be the most significant caesium discovery globally, marked both by incredible scale and
high grades – and this program represents a major step towards unlocking its full commercial potential.
Working with Koch Technology Solutions provides access to industry expertise, including demonstrated
capabilities in critical minerals, and a portfolio of innovative processing technologies.
“Importantly, this initiative will allow us to explore pathways to produce high -value caesium chemicals,
which could ultimately position PMET as a cornerstone supplier to critical industries including defence,
aerospace, energy and advanced technologies.
“Through this program, PMET furthers its exposure to the significance of critical minerals in the key U.S.
market, providing us with an opportunity to capture substantially greater value from this rare and
strategically important discovery by working alongside a US industry participant,” added Mr. Brinsden.
Garrett Krall, Critical Minerals Business Leader at Koch Technology Solutions says: “This program brings
together the distinct strengths of KTS and PMET to advance an innovative approach in critical minerals
extraction. The project reflects the kind of challenge that KTS is uniquely positioned to solve, by applying
our process technology and technical expertise alongside PMET to advance an approach to help unlock
the value of an important critical mineral supply base.”
PMET RESOURCES INC. (THE “COMPANY” OR “PMET”) (TSX: PMET) (ASX: PMT)
(OTCQX: PMETF) (FSE: R9GA) is pleased to announce the commencement of a strategic
testwork program with Koch Technology Solutions (“KTS”), a division of leading US conglomerate
Koch Inc., to evaluate advanced processing pathways for caesium chemicals derived from pollucite
concentrates at its 100%-owned Shaakichiuwaanaan Project, in the James Bay region of Quebec ,
Canada.
In addition to being one of the largest lithium-tantalum pegmatite Mineral Resources1 and lithium
pegmatite Mineral Reserves 2 globally, the Shaakichiuwaanaan Property also hosts the world’s
largest in-situ pollucite-hosted caesium pegmatite Mineral Resource, with 0.69 Mt at 4.40% Cs2O
(Indicated) and 1.70 Mt at 2.40% Cs 2O (Inferred). The CV13 Pegmatite, host to the caesium
Mineral Resource, is located ~3 km along trend from the CV5 Pegmatite, which is situated
approximately 13 km south of the regional Trans -Taiga Road and powerline infrastructure
corridor, and is accessible year-round by road (Figure 1).
Pollucite mineralization (the host mineral for caesium) occurs in multiple zones w ithin the CV13
Pegmatite – Vega, Rigel, and Helios (Figure 2). Drilling to date has demonstrated remarkable scale
and grade, with mineralization remaining open in several areas (see news release March 18, 2026).
This unique endowment positions the Company as a potential future leader in the supply of
caesium – one of the rarest and most strategically important critical minerals globally.
The testwork program with KTS has been developed as part of a strategic relationship that has
evolved following the Company’s investigations of the caesium industry, commercial engagement,
and research . The program will leverage KTS’s demonstrated capabilities in engineering,
development and commercialization of critical minerals extraction technologies to produce a range
of value-added caesium chemical compounds.
1 The Consolidated MRE (CV5 + CV13 pegmatites), which includes the Rigel and Vega caesium zones, totals 108.0 Mt at 1.40% Li2O, 0.11%
Cs2O, 166 ppm Ta2O5, and 66 ppm Ga, Indicated, and 33.4 Mt at 1.33% Li 2O, 0.21% Cs2O, 155 ppm Ta 2O5, and 65 ppm Ga, Inferred,
and is reported at a cut-off grade of 0.40% Li2O (open-pit), 0.60% Li2O (underground CV5), and 0.70% Li 2O (underground CV13). A grade
constraint of 0.50% Cs2O was used to model the Rigel and Vega caesium zones. Effective Date is June 20, 2025 (through CV24-787). Mineral
Resources are not Mineral Reserves as they do not have demonstrated economic viability. Mineral Resources are inclusive of Mineral Reserves.
2 Probable Mineral Reserve of 84.3 Mt at 1.26% Li2O at the CV5 Pegmatite with a cut-off grade is 0.40% Li2O (open-pit) and 0.70% Li 2O
(underground). Underground development and open -pit marginal tonnage containing material above 0.37% Li 2O are also included in the
statement. The Effective Date is September 11, 2025. See Feasibility Study news release dated October 20, 2025.
The proposed testwork program – to be executed over approximately the next four months – is
expected to create pathways for the conversion of Shaakichiuwaanaan pollucite concentrates to
various value-added caesium chemical compounds.
The Company is motivated to consider c aesium value -added chemical production (with key
partners) to determine the best pathway to unlock maximum value from its globally significant
caesium resource and the pollucite concentrates ( host mineral for caesium) that could be
produced at site.
Figure 1: Shaakichiuwaanaan Resources and the CV13 Pegmatite (caesium).
ABOUT KOCH TECHNOLOGY SOLUTIONS
Koch Technology Solutions is a leader in technology licensing, delivering operating efficiency and
capital productivity for licensees deploying the technologies in our portfolio. With a global
network and rich history of domain experience and expertise, KTS gains additional strength from
its position within Koch Engineered Solutions (KES). This backing enhances the ability to partner
with companies developing chemical process technologies, create attractive licensing solutions
for commercial deployment, and bring the next generation of technologies to the market.
ABOUT KOCH INC.
Koch Inc. is one of the largest privately held companies in the world, headquartered in Wichita,
Kansas, with annual revenues that have exceeded US$125 billion . It owns a diverse group of
companies involved in manufacturing, agriculture, pulp and paper, packaging, consumer products,
building materials, glass, automotive components, refining, renewable energy, chemicals and
polymers, electronics, software, network solutions, health care technology, engineered
technology, project services, recycling, supply chain and logistics, commodities trading, real estate,
and investments. Since 2003, Koch companies have invested more than $190 billion in growth and
improvements. With a presence in more than 50 countries, Koch companies employ about
120,000 people worldwide, with nearly half of those in the United States. For more news and
information, visit www.kochinc.com.
Figure 2: Drill hole result highlights at the CV13 Pegmatite (caesium).
NEXT STEPS
The testwork program developed in partnership with Koch Technology Solutions is anticipated to
occur over approximately the next four months, after which preliminary process pathways are
expected to have been developed to produce value -added c aesium chemicals from
Shaakichiuwaanaan pollucite concentrates.
In parallel, and building on the relationship developed with Koch Inc the Company will continue
to assess both potential future products and their interplay with the downstream caesium market.
This will include product pathways in industrial sectors like the oil and gas , catalysts, and
pharmaceuticals industries.
Further investigations are also under way for the potential utilization of caesium value -added
products for the emerging terrestrial solar panel industry, where next-generation panels can
include caesium to enhance energy generation efficiency.
At CV13, exploration and resource development will continue as part of the Company’s proposed
2026 drill campaign to further delineate and expand upon the previously announced discoveries at
Vega, Rigel, and Helio s. An updated Mineral Resource Estimate for the caesium zones ,
incorporating all the drilling through 2025, is anticipated to be announced in the second half of
2026.
QUALIFIED/COMPETENT PERSON
The technical and scientific information in this news release that relates to the Mineral Resource
Estimate and exploration results for the Company’s properties is based on, and fairly represents,
information compiled by Mr. Darren L. Smith, M.Sc., P.Geo., who is a Qualified Person as defined
by National Instrument 43 -101 – Standards of Disclosure for Mineral Projects (“NI 43 -101”), and
member in good standing with the Ordre des Géologues du Québec (Geologist Permit number
01968), and with the Association of Professional Engineers and Geoscientists of Alberta (member
number 87868). Mr. Smith has reviewed and approved the related technical information in this
news release.
Mr. Smith is an Executive and Vice President of Exploration for PMET Resources Inc. and holds
common shares, Restricted Share Units (RSUs), Performance Share Units (PSUs) , and options in
the Company.
The information in this news release that relates to the Mineral Reserve Estimate and Feasibility
Study is based on, and fairly represents, information compiled by Mr. Frédéric Mercier -Langevin,
Ing. M.Sc., who is a Qualified Person as defined by NI 43-101, and member in good standing with
the Ordre des Ingénieurs du Québec. Mr. Mercier-Langevin has reviewed and approved the related
technical information in this news release.
Mr. Mercier-Langevin is the Chief Operating and Development Officer for PMET Resources Inc.
and holds common shares, RSUs, PSUs, and options in the Company.
ABOUT PMET RESOURCES INC.
PMET Resources Inc. is a pegmatite critical mineral exploration and development company focused
on advancing its district -scale 100% -owned Shaakichiuwaanaan Property located in the Eeyou
Istchee James Bay region of Quebec, Canada, which is accessible year -round by all -season road
and proximal to regional hydro-power infrastructure.
In late 2025, the Company announced a positive lithium -only Feasibility Study on the CV5
Pegmatite for the Shaakichiuwaanaan Property and declared a maiden Mineral Reserve of 84.3 Mt
at 1.26% Li2O (Probable)3. The study outlines the potential for a competitive and globally significant
high-grade lithium project targeting up to ~800 ktpa spodumene concentrate using a simple Dense
Media Separation (“DMS”) only process flowsheet. Further, the results highlight
Shaakichiuwaanaan as a potential North American critical mineral powerhouse with significant
opportunity for tantalum and caesium in addition to lithium.
The Project hosts a Consolidated Mineral Resource4 totalling 108.0 Mt at 1.40% Li2O and 166 ppm
Ta2O5 (Indicated) and 33.4 Mt at 1.33% Li2O and 155 ppm Ta2O5 (Inferred), and ranks as a top ten
lithium pegmatite globally in size . Additionally, the Project hosts the world’s largest pollucite-
hosted caesium pegmatite Mineral Resource at the Rigel and Vega zones with 0.69 Mt at 4.40%
Cs2O (Indicated), and 1.70 Mt at 2.40% Cs2O (Inferred).
For further information, please contact us at [email protected] or by calling +1 (604) 279 -8709, or
visit www.pmet.ca. Please also refer to the Company’s continuous disclosure filings, available under
its profile at www.sedarplus.ca and www.asx.com.au, for available exploration data.
This news release has been approved by
“KEN BRINSDEN”
Kenneth Brinsden, President, CEO, & Managing Director
Olivier Caza-Lapointe
Head, Investor Relations
T: +1 (514) 913-5264
DISCLAIMER FOR FORWARD-LOOKING INFORMATION
This news release contains “forward -looking statements” and “forward -looking information”
within the meaning of applicable securities laws.
All statements, other than statements of present or historical facts, are forward -looking
statements. Forward -looking statements involve known and unknown risks, uncertainties and
assumptions and accordingly, actual results could differ materially from those expressed or implied
in such statements. You are hence cautioned not to place undue reliance on forward -looking
statements. Forward-looking statements are typically identified by words such as “ aims to”, “to
3 See Feasibility Study news release dated October 20, 2025. Probable Mineral Reserve cut-off grade is 0.40% Li2O (open-pit) and 0.70%
Li2O (underground). Underground development and open-pit marginal tonnage containing material above 0.37% Li2O are also included in the
statement. Effective Date of September 11, 2025.
4 The Consolidated MRE (CV5 + CV13 pegmatites), which includes the Rigel and Vega caesium zones, totals 108.0 Mt at 1.40% Li2O, 0.11%
Cs2O, 166 ppm Ta2O5, and 66 ppm Ga, Indicated, and 33.4 Mt at 1.33% Li 2O, 0.21% Cs2O, 155 ppm Ta 2O5, and 65 ppm Ga, Inferred,
and is reported at a cut-off grade of 0.40% Li2O (open-pit), 0.60% Li2O (underground CV5), and 0.70% Li 2O (underground CV13). A grade
constraint of 0.50% Cs2O was used to model the Rigel and Vega caesium zones. The Effective Date is June 20, 2025 (through drill hole CV24-
787). Mineral Resources are not Mineral Reserves as they do not have demonstrated economic viability. Mineral Resources are i nclusive of
Mineral Reserves.
be”, “plan”, “development”, “growth”, “continued”, “intent”, “expectations”, “emerging”, ,
“anticipated”, “potential”, “ability”, “additional”, “prospects”, “estimated”, , “target”, “believes”,
“next steps”, “underway” or variations of such words and phrases or statements that certain
actions, events or results “may”, “could”, “would”, “might” or “will” be taken, occur or be
achieved.
Forward-looking statements include, but are not limited to, statements concerning the ability to
convert caesium-rich pollucite concentrates into various high -value caesium chemical products ,
the existence of a potential pathway into critical US industrial supply chains for defen se, space,
energy and advanced electronics, the ability to support the potential development of a new high -
margin product stream from Shaakichiuwaanaan alongside lithium, the ability to unlock the full
commercial potential of Shaakichuwaanaan caesium discovery, the ability to produce value-added
caesium chemicals from Shaakichiuwaanaan pollucite concentrates, the potential for future
products and their interplay with the downstream caesium market and the potential utilization of
caesium value -added products for the emerging terrestrial solar panel industry, where next -
generation panels can include caesium to enhance energy generation efficiency.
Forward-looking statements are based upon certain assumptions and other important factors that,
if untrue, could cause actual results to be materially different from future results expressed or
implied by such statements. There can be no assurance that forward-looking statements will prove
to be accurate. Key assumptions upon which the Company’s forward-looking information is based
include, without limitation, the accuracy of reserve and resource estimates, the classification of
resources and the assumptions on which the reserve and resource estimates are based, long-term
demand for lithium (spodumene), tantalum (tantalite), and caesium (pollucite) supply, and that
exploration and development results continue to support management’s current plans for
Property development.
Forward-looking statements are also subject to risks and uncertainties facing the Company’s
business, any of which could have a material adverse effect on the Company’s business, financial
condition, results of operations and growth prospects. Readers shou ld review the detailed risk
discussion in the Company’s most recent Annual Information Form filed on SEDAR+, for a fuller
understanding of the risks and uncertainties that affect the Company’s business and operations.
Although the Company believes its expectations are based upon reasonable assumptions and has
attempted to identify important factors that could cause actual actions, events or results to differ
materially from those described in forward -looking statements, there may be other factors that
cause actions, events or results not to be as anticipated, estimated or intended. There can be no
assurance that forward -looking information will prove to be accurate. If any of the risks or
uncertainties mentioned above, w hich are not exhaustive, materialize, actual results may vary
materially from those anticipated in the forward-looking statements.
The forward -looking statements contained herein are made only as of the date hereof. The
Company disclaims any intention or obligation to update or revise any forward-looking statements,
whether as a result of new information, future events or otherwise, except to the extent required
by applicable law. The Company qualifies all of its forward-looking statements by these cautionary
statements.
COMPETENT PERSON STATEMENT (ASX LISTING RULES)
The information in this news release that relates to the Feasibility Study (“FS”) for the
Shaakichiuwaanaan Project, which was first reported by the Company in a market announcement
titled “ PMET Resources Delivers Positive CV5 Lithium -Only Feasibility Study for its Large -Scale
Shaakichiuwaanaan Project” dated October 20, 2025 (Montreal time) is available on the Company’s
website at www.pmet.ca, on SEDAR+ at www.sedarplus.ca and on the ASX website at
www.asx.com.au. The production target from the Feasibility Study referred to in this news release
was reported by the Company in accordance with ASX Listing Rule 5.16 on the date of the original
announcement. The Company confirms that, as of the date of this news releas e, all material
assumptions and technical parameters underpinning the production target in the original
announcement continue to apply and have not materially changed.
The Mineral Resource and Mineral Reserve Estimates in this release were first reported by the
Company in accordance with ASX Listing Rule s 5.8 and 5.9 in market announcements titled
"World's Largest Pollucite-Hosted Caesium Pegmatite Deposit" dated July 20, 2025 (Montreal time) and
“PMET Resources Delivers Positive CV5 Lithium -Only Feasibility Study for its Large -Scale
Shaakichiuwaanaan Project ” dated October 20, 2025 (Montreal time) and are available on the
Company’s website at www.pmet.ca, on SEDAR+ at www.sedarplus.ca and on the ASX website
at www.asx.com.au. The Company confirms that, as of the date of this news release, it is not aware
of any new information or data verified by the competent person that materially affects the
information included in the relevant announcement and that all material assumptions and technical
parameters underpinning the estimates in the relevant announcement continue to apply and have
not materially changed. The Company confirms that, as at the date of this announcement, the form
and context in which the competent person’s findi ngs are presented have not been materially
modified from the original market announcement.
The Exploration Results in this release were first reported by the Company in accordance with
ASX Listing Rule 5. 7 in market announcements dated March 18, 2026 , and are available on the
Company’s website at www.pmet.ca, on SEDAR+ at www.sedarplus.ca and on the ASX website
at www.asx.com.au. The Company confirms that, as of the date of this news release, it is not aware
of any new information or data verified by the competent person that materially affects the
information included in the relevant announcement. The Company confirms that, as at the date of
this announcement, the form and context in which the competent person’s findings are presented
have not been materially modified from the original market announcement.