Saturday, September 19, 2026
MiningNewsTerminal
Saturday, September 19, 2026 Admin

FWZ.V ·

Fireweed Metals Commences 2025 Field Program

Exploration Programs

Fireweed Metals Commences 2025 Field

Program

TSXV: FWZ

OTCQX: FWEDF

FSE: M0G

VANCOUVER, BC

,

June 4, 2025

/CNW/ - FIREWEED METALS CORP. ("Fireweed" or the

Company") (TSXV: FWZ) (OTCQX: FWEDF) is pleased to announce the launch of its 2025 Field

Program, with planned project advancement and exploration activities across its Mactung, Macpass,

Gayna, and North Canol Infrastructure Improvement (NCIIP) projects.

The 2025 Program includes up to

26,000 m

of combined diamond drilling across the three critical

metals projects, including up to

12,000 m

at Macpass, up to

11,000 m

at Mactung, and

approximately

3,000 m

at Gayna. At Macpass, additional regional work will also be conducted to

refine target areas and build upon historical exploration efforts across the broader district. Fieldwork

is now underway at Macpass, with work at Mactung and Gayna expected to follow.

Ian Gibbs

, President and Chief Executive Officer stated "we are very excited to have commenced

field operations across multiple critical metals projects. The Mactung field program and engineering

studies will inform an updated Feasibility Study, scheduled to commence this year, on our 100%

owned strategic tungsten project. A potentially high-impact inaugural exploration drilling campaign will

be undertaken at Gayna, guided by an updated exploration model for mineralization. Exploration

efforts will continue across the Macpass district aimed at expanding discovered deposits, drilling

priority regional prospects, including our first intrusion related gold prospects, and continuing regional

exploration efforts. The team has kicked off our important NCIIP work and are actively expanding

our collaboration with the federal and territorial governments, as well as local Indigenous groups.

Collectively this marks Fireweed's most ambitious field season to date and a major step forward in

advancing our district-scale projects."

2025 Mactung Program

As part of the US Defense Production Act (DPA) Title III-supported program announced in

December 2024

, Fireweed is progressing a major

11,000 m

drill program at Mactung, as well as

ongoing environmental baseline field work. These activities will support an updated Feasibility Study,

which is expected to commence this year and establish the foundation for future licensing and

permitting efforts. Activities will include the following:

1

.

Resource Update

– Targeting the conversion of portions of the unclassified and Inferred

Underground Mineral Resource

1

to the Indicated category.

2

.

Geometallurgical Sampling

– Provide large diameter (HQ) core for a geometallurgical

sampling program that will characterize the mineralogy, grain size, comminution and

metallurgical characteristics of defined geometallurgical domains throughout the mineral

resource.

3

.

Hydrogeological Studies

– Installing instrumentation to enhance the hydrogeological model for

both the deposit and planned infrastructure areas.

4

.

Geomechanical Logging

– Providing critical data to optimize underground excavation design.

5

.

Geotechnical Site Investigation

– Providing geotechnical and permafrost information in areas

of planned infrastructure and mine areas.

6

.

Expanded Gold Assay Coverage

– Increase the coverage of gold assays across the deposit,

focusing on areas where historical drilling did not test samples for gold and trace values were

assumed in the 2023 Mineral Resource.

Additionally, Fireweed plans to scan available historical drill core using advanced core scanning

technology. This will generate super-high-resolution imagery, XRF, short-wave ultra-violet, and

hyperspectral data, which will be integrated into the geological model to refine the Mineral Resource

Estimate and support the development of a comprehensive geometallurgical model.

2025 Macpass Field Program

At Macpass, Fireweed has initiated a large-scale exploration drilling program targeting both high-

priority regional prospects and step-outs around known zinc-lead-silver-gallium-germanium deposits.

The Company also plans to drill-test intrusion-related gold targets identified through previous

fieldwork. The program is guided by a comprehensive foundation of geological, geochemical, and

geophysical data collected through and including the 2024 season, supporting drill testing of newly

developed targets across the district.

2025 Macpass Drill Program

1

.

Tom South

– Step out drilling at Tom South to follow up on high-grade intercepts from 2023

and 2024, both up and down dip and along strike of the defined resource. Notable intercepts

from 2024 include

15.12 m

(

10 m

true width

2

) of 10.39% zinc, 18.10% lead, and 296.9 g/t silver

in hole TS24-002 and

18.15 m

(

11 m

true width

2

) of 9.02% zinc, 7.46% lead, and 148.3 g/t

silver in hole TS24-001.

2

.

Boundary Zone

– Drill testing of density anomalies generated through the combined Muon and

Gravity surveys. This drilling will test targets along strike of the high-grade massive sulphide

lens of Boundary Zone Prime Zone, as well as density anomalies adjacent to the Boundary

Zone trend. For more information please visit the 2025 news release on muon targets:

https://fireweedmetals.com/fireweed-metals-identifies-targets-using-muon-tomography/

3

.

Regional Exploration

– Several high-potential targets for sediment hosted zinc-lead-silver have

been identified and are ready for drill testing in 2025.

4

.

Intrusion Related Gold

– Following up on targets identified through the 2023 and 2024

seasons, Fireweed intends to drill test one or more of these coincident geophysical and

geochemical anomalies that are highly prospective for intrusion related gold systems.

5

.

Focused Muon Survey –

Following the successful imaging of Boundary Zone during the 2024

Muon Survey, Fireweed intends to leverage this technology in a greenfields exploration program

targeting the David, Goliath, Sling and Harvest areas. Drill holes will be dual-purpose: first, to

test geophysical and geochemical targets through core logging and analysis; and second, to

host muon detectors post-drilling to generate a comprehensive density image of the subsurface.

2025 Macpass Regional Program

Fireweed intends to continue regional exploration efforts on our vast underexplored (~948 km

2

) land

package, including high-definition ground gravity surveying over previously identified targets to

enhance resolution, regional gravity surveying to identify new anomalies, soil sampling to provide

geochemistry around both zinc-lead-silver as well as intrusion related gold targets, and prospecting

to identify near target mineralization.

Gayna Field Program

Fireweed is planning to drill approximately

3,000 m

to test several targets along reef margins

identified by ground gravity, soil geochemistry, and airborne geophysics efforts. High-grade rock and

soil samples have confirmed the presence at surface of massive sulfide mineralization, containing

elevated levels of critical metals zinc, germanium and gallium. The program is designed to test a new

mineralization model related to carbonate reef margin deposition. Camp and materials were

mobilized to site in February.

North Canol Infrastructure Improvement Project (NCIIP)

Fireweed has initiated key project activities associated with NCIIP, for which it was conditionally

awarded

C$12.9 million

in funding under the Canadian Critical Minerals Infrastructure Fund in

December 2024

(subject to due diligence). The conditional award enables Fireweed to lead planning

efforts for infrastructure improvements that would serve the critical minerals district at Macmillan

Pass.

Key engineering and environmental vendors supporting the NCIIP have been retained and the

company is facilitating their mobilization for important field-based efforts in 2025, including roadway

surveying and biophysical data collection. The company continues to actively engage with federal

and territorial regulatory bodies as well as Indigenous groups to ensure alignment of objectives and

progress the project in advance of an anticipated definitive Contribution Agreement with

Canada

.

Qualified Person Statement

Technical information in this news release has been approved by Fireweed Metals Senior Geologist,

Ian Carr

, P.Geo. (BC), a 'Qualified Person' as defined under National Instrument 43-101. Mr. Carr is

not independent of Fireweed for purposes of NI 43-101.

About Fireweed Metals Corp.

Fireweed is an exploration company focused on unlocking value in a

new critical metals district located in

Northern Canada

. Fireweed is 100% owner of the Macpass

District, a large and highly prospective 985 km

2

land package. The Macpass District includes the

Macpass zinc-lead-silver project and the Mactung tungsten project. A Lundin Group company,

Fireweed is strongly positioned to create meaningful value.

Fireweed trades on the TSX Venture Exchange under the trading symbol "FWZ", on the OTCQX

Best Market under the symbol "FWEDF", and on the Frankfurt Stock Exchange under the trading

symbol "M0G".

Additional information about Fireweed and its projects can be found on the Company's website at

FireweedMetals.com and at

www.sedarplus.com

ON BEHALF OF FIREWEED METALS CORP.

"

Ian Gibbs

"

President, CEO, and Director

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in

the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of

this release.

Cautionary Statements

Forward Looking Statements

This news release contains "forward-looking" statements and information ("forward-looking

statements"). All statements, other than statements of historical facts, included herein, including,

without limitation, statements relating to interpretation of drill results, targets for exploration,

potential extensions of mineralized zones, future work plans, the use of funds, and the potential of

the Company's projects, are forward looking statements. Forward-looking statements are

frequently, but not always, identified by words such as "expects", "anticipates", "believes", "intends",

"estimates", "potential", "possible", and similar expressions, or statements that events, conditions, or

results "will", "may", "could", or "should" occur or be achieved. Forward-looking statements are

based on the beliefs of Company management, as well as assumptions made by and information

currently available to Company management and reflect the beliefs, opinions, and projections on the

date the statements are made. Forward-looking statements involve various risks and uncertainties

and accordingly, readers are advised not to place undue reliance on forward-looking statements.

There can be no assurance that such statements will prove to be accurate, and actual results and

future events could differ materially from those anticipated in such statements. Important factors that

could cause actual results to differ materially from the Company's expectations include but are not

limited to, exploration and development risks, unanticipated reclamation expenses, expenditure and

financing requirements, general economic conditions, changes in financial markets, the ability to

properly and efficiently staff the Company's operations, the sufficiency of working capital and funding

for continued operations, title matters, First Nations relations, operating hazards, political and

economic factors, competitive factors, metal prices, relationships with vendors and strategic

partners, governmental regulations and oversight, permitting, seasonality and weather, technological

change, industry practices, uncertainties involved in the interpretation of drilling results and

laboratory tests, and one-time events. The Company assumes no obligation to update forward

looking statements or beliefs, opinions, projections or other factors, except as required by law.

1

For Mactung Mineral Resources, see Fireweed news release dated

June 13, 2023

"Fireweed

Metals Announces Mineral Resources for the Mactung Project: the Largest High-Grade Tungsten

Deposit in the World" and the technical report entitled "NI 43-101 Technical

Report, Mactung Project,

Yukon Territory, Canada

," with effective date

July 28, 2023

filed on

https://www.sedarplus.ca/

.

Garth Kirkham

, P.Geo. is considered independent of the Company, and

a 'Qualified Person' as defined under NI 43-101.

Garth Kirkham

, of Kirkham Geosystems Limited., is

responsible for the Mactung Mineral Resource Estimate.

2

True widths for primary intervals are estimated by measuring perpendicular to strike within the

short axis of a stratiform wireframe that has been constructed in 3D around the mineralized

intercepts at Tom based on assay results, geological logging, stratigraphic correlation, and bedding

measurements from oriented core. The massive sulphide mineralization and laminated mineralization

at Tom are stratiform (oriented parallel to bedding), therefore the true width, or thickness, of the

zone is estimated perpendicular to both the strike and dip direction of bedding. True widths are

rounded to the nearest metre for widths over

10 m

and to the nearest

0.1 m

for widths less than

10

m

, as this better reflects the precision of the estimates. True widths should be regarded as

approximate as these are derived from an estimation that uses a preliminary interpretation of the

geological model.

SOURCE

Fireweed Metals Corp.

View original content to download multimedia:

http://www.newswire.ca/en/releases/archive/June2025/04/c5310.html

%SEDAR: 00042438E

For further information:

Alex Campbell, Phone: +1 (604) 689-7842, Email:

[email protected]

CO: Fireweed Metals Corp.

CNW 07:30e 04-JUN-25