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Quest Critical Metals Announces Completion of Diamond Drill Hole Testing a Strong IP Anomaly in the Area of the Tisova-Klingenthal Cu-Co Deposit

Exploration Programs

FOR IMMEDIATE RELEASE

QUEST CRITICAL METALS ANNOUNCES COMPLETION OF DIAMOND

DRILL HOLE TESTING A STRONG IP ANOMALY IN THE AREA OF THE

TISOVA-KLINGENTHAL CU-CO DEPOSIT

Vancouver, BC – September 19, 2025 – Quest Critical Metals Inc (“Quest ” or the

“Company”) (CSE: BULL, OTC: DCNNF, FSE: DCR0) has received the results for the

recently completed diamond drill hole testing of a strong IP anomaly stratigraphically

below the historic copper mine workings. Quest’s Tisová /Klingenthal license area,

centered on the Tisová Mine, which was actively mined from 1627 until 1970, has shown

promising results. The historic sulphide zones contained grades up to 17.1% Cu, 0.69%

Co, and 3.7g/t Au.

The drill target was generated from the 2019 IP and resistivity survey data. In 2024, the

geophysical data was reprocessed and remodelled by independent geophysicists,

confirming the same IP anomaly. The program comprised 2 diamond drill holes, with the

initial hole being abandoned at 393 metres. due to faulting.

The second 479.5 metre diamond (Azimuth 80 degrees, Dip - 85 degrees) drill hole

intersected:

4.3 metres of mine stratigraphy , 67.3 to 71.6 metres , assaying 1901 ppb Copper.

Including 2.0 metres of 0.2 ppm of gold. This zone of mineralization is interpreted as the

main historically mined ore zone.

76.5 metres of 2-5% disseminated pyrite within a strongly silica, phyllitic altered zone from

328.7 to 406 metres. Though barren, this horizon fits within the Besshi Type Deposit

model as a strongly altered stratigraphic section. All intersections are close to true width.

Analysis of core samples was completed by ALS Romania SRL.

Quest’s Tisova/Klingenthal licence area is centered on the Tisova Mine, which was

actively mined from 1627 until 1970 , has shown historic sulphide zones w ith grades up

to 17.1% Cu, 0.69% Co, 3.7g/t Au.

Quest’s Tisová–Klingenthal Cu–Co deposit was the test site of the European Union (EU)-

funded Exploration Information System (EIS) project, which aimed to develop innovative

exploration concepts and advanced data analysis tools to increase the likelihood of

discovering new sources of critical raw materials vital for the EU’s economy. Utilizing the

Exploration Information System (EIS) toolkit, a knowledge- driven Fuzzy Logic approach

was developed to integrate key spatial datasets, including buffered Copper and zinc soil

and stream sediment anomalies and metabasaltic lithology, relevant to Besshi -type

Volcanogenic Massive Sulphide deposits.

The prospectivity model defined anomalies of potential mineralisation, including the

historic Tisová deposit and additional targets aligned along the same stratigraphic horizon

that require further exploration follow-up.

The Company remains encouraged by the project’s underlying potential and is committed

to advancing exploration efforts to define future drill targets.

Mr. Garry Clark, P. Geo., Clark Exploration Consulting, is the “Qualified Person” as

defined in NI 43-101, who has reviewed and approved the technical content in this press

release.

Quest Critical Metals Inc.

James Newall, President and CEO

T: (604) 639-4472

Forward-Looking Statements

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

applicable securities law. Forward-looking information is frequently characterized by words such

as "plan", "expect", "project", "intend", "believe", "anticipate", "estimate" and other similar

words, or statements that certain events or conditions "may" or "will" occur. In particular,

forward-looking information in this press release includes, but is not limited to, statements with

respect to the Company's diamond drill hole testing and results. Although we believe that the

expectations reflected in the forward- looking information are reasonable, there can be no

assurance that such expectations will prove to be correct. We cannot guarantee future results,

performance or achievements. Consequently, there is no representation that the actual results

achieved will be the same, in whole or in part, as those set out in the forward-looking information.

Forward-looking information is based on the opinions and estimates of management at the date

the statements are made, and are subject to a variety of risks and uncertainties and other factors

that could cause actual events or results to differ materially from those anticipated in the forward-

looking information. Some of the risks and other factors that could cause the results to differ

materially from those expressed in the forward- looking information include, but are not limited

to: general economic conditions in Canada and globally; industry conditions, including

governmental regulation and environmental regulation; failure to obtain industry partner and

other third party consents and approvals, if and when required; the availability of capital on

acceptable terms; the need to obtain required approvals from regulatory authorities; stock market

volatility; liabilities inherent in water disposal facility operations; competition for, among other

things, skilled personnel and supplies; incorrect assessments of the value of acquisitions;

geological, technical, processing and transportation problems; changes in tax laws and incentive

programs; failure to realize the anticipated benefits of acquisitions and dispositions; and the other

factors. Readers are cautioned that this list of risk factors should not be construed as exhaustive.

The forward- looking information contained in this news release is expressly qualified by this

cautionary statement. We undertake no duty to update any of the forward -looking information to

conform such information to actual results or to changes in our expectations except as otherwise

required by applicable securities legislation. Readers are cautioned not to place undue reliance

on forward-looking information.

Neither the Canadian Securities Exchange nor its Regulation Services Provider accepts

responsibility for the adequacy or accuracy of this release.