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Cascadia Receives 10-Year Exploration Permit and Commences 4,000 m Diamond Drill Program at its Carmacks Copper-Gold Project, Yukon

Exploration Programs Permits & Approvals

Cascadia Receives 10-Year Exploration Permit

and Commences 4,000 m Diamond Drill

Program at its Carmacks Copper-Gold Project,

Yukon

VANCOUVER, BC

,

Sept. 17, 2025

/CNW/ - Cascadia Minerals Ltd. ("

Cascadia

") (TSXV: CAM)

(OTCQB: CAMNF) is very pleased to announce that it has received a 10-year Class 4 exploration

permit for its 177 km

2

Carmacks Project. Diamond drilling has now commenced, with

4,000 m

planned to focus on expanding resources around the Carmacks Main Deposit. A second drill is

scheduled to arrive on

September 20

th

. The 100%-owned Carmacks Project is road accessible, 10

km from power and 35 km from the past-producing Minto Mine and located within the Traditional

Territory of the Little Salmon Carmacks and Selkirk First Nations.

Long section (CNW Group/Cascadia Minerals Ltd.)

Highlights

Up to

4,000 m

diamond drilling in 13 holes focusing on deposit expansion

, with step-outs

on key 2021 drill holes (Figures

1

,

2

):

2000 Zone:

105.52 m

of 0.96% copper, 0.18 g/t gold

(Hole CRM21-011);

1213 Zone:

119.40 m

of 0.76% copper, 0.14 g/t gold

(Hole CRM21-025); and

147 Zone:

65.35 m

of 0.96% copper, 0.32 g/t gold

(Hole CRM21-019).

Historical exploration focused on shallow copper oxide mineralization

, with sulphide

mineralization open along strike and at depth in all zones; and

10-year exploration permit

includes significant amounts of diamond drilling and support

activities, allowing for extensive campaigns of resource expansion and advancement.

"

We're very pleased to have the first drill turning in our fully funded initial

4,000 m

drill program at

Carmacks

, less than a month after closing the acquisition of Granite Creek Copper. Having a 10-

year exploration permit in hand is a major milestone, setting the stage for large-scale programs to

advance the project. Modelling shows the Carmacks Main Deposit is open in all directions.

Historical drilling primarily targeted near-surface copper oxide mineralization, leaving extensive

areas untested and in many cases, holes were shut down when sulphide mineralization was

encountered,

" said

Graham Downs

, Cascadia's President and CEO. "

In addition to the growth

potential at the Main Deposit, the 177 km

2

property covers a large portion of the Minto Copper Belt

and hosts numerous compelling targets that will be advanced for 2026 drilling. One of these

targets includes Zone A, which was drilled in the 80s and returned

25m

of 2.27% copper with 2.20

g/t gold. The Carmacks Project is one of very few undeveloped copper-gold projects in

North

America

with a road accessible deposit, clear expansion potential, and a district-scale land

package."

Figure 1 –

Carmacks

2025 Drill Plan Map

Figure 2 – Carmacks Main Deposit Long Section

Figure 3 – Carmacks Regional Overview

2025 Fall Drill Program

The Carmacks Main Deposit is comprised of three zones, 147, 2000S and 1213, that are developed

along sections of a copper- and gold-enriched raft of migmatized Stikine volcanic rocks. All zones

are exposed at or near surface and remain open along strike and at depth. The Deposit hosts a

Measured and Indicated Resource of 651 Mlbs of copper and 302 koz of gold

(36.3 million

tonnes grading 0.81 % copper, 0.26 g/t gold, 3.23 g/t silver and 0.01% molybdenum) or

1.07%

copper equivalent

. The last major drill program at the deposit was in 2021, which returned

numerous high-grade drill intersections that have yet to see follow-up work.

The first of two skid-mounted diamond drills has commenced drilling at the 147 Zone. A second drill

is scheduled to arrive

September 20

th

to begin drilling at the 1213 Zone. The fall 2025 drill program

will consist of approximately

4,000 m

of diamond drilling, with 3-4 holes at each of the three zones to

target sulphide mineralization down dip and along strike (Figures

1

,

2

). Table 1 provides key

historical intersections that will be stepped out on in 2025 drilling.

Table 1: Historical Carmacks Deposit Intersections by Zone

Zone

Drill Hole

From (m)

To (m)

Interval (m)

*

Copper (%)

Gold (g/t)

Silver (g/t)

147

WC-021-B

**

3.00

340.00

337.00

1.28

0.73

7.4

DDH-1-46

174.29

230.13

55.84

1.31

0.50

4.3

CRM21-019

279.95

345.30

65.35

0.96

0.32

4.3

2000

CRM21-011

223.98

329.50

105.52

0.96

0.18

4.0

CRM21-005

137.05

179.80

42.75

0.75

0.16

3.9

CRM21-006

229.20

278.20

49.00

0.87

0.17

3.9

1213

CRM21-025

89.90

209.30

119.40

0.76

0.14

2.6

WC-023

100.00

181.00

81.00

0.68

0.13

1.9

CRM20-001

102.85

230.12

127.27

0.61

0.13

2.1

WC-122

69.06

117.00

47.94

0.80

0.16

4.0

*

The reported intervals are drilled thicknesses and true widths are typically 60-70% of drilled widths.

**

Hole WC-021-B is a high-angle hole and not representative of true width.

Carmacks Project Overview

Cascadia's 177 km

2

Carmacks Project is located 35 km southeast of the past producing Minto Mine,

which was recently acquired by Selkirk Copper Mines Inc. The Carmacks Project is road-accessible,

via a 13 km access road which extends from the government-maintained Freegold Road northwest

of

Carmacks

in central

Yukon

. The project has an existing 40-person camp, numerous roads

throughout the property, and is 10 km from grid power.

The Carmacks Project covers a large portion of the Minto Copper Belt, a 180 km x 60 km belt of

intrusion-related copper-gold-silver deposits. This belt is within the Stikine Terrane, which extends

into

Yukon

from

British Columbia

, and is characterized by Late Triassic to early Jurassic volcanic-

plutonic arc complexes that are well-endowed with copper-gold-molybdenum porphyries including the

Red Chris, Schaft Creek, Kemess, KSM and Galore Creek deposits and mines.

The Carmacks Main Deposit has a Measured and Indicated Resource containing 651 Mlbs of

copper and 302 koz of gold (36.3 million tonnes grading 0.81 % copper, 0.26 g/t gold, and 3.23 g/t

silver and 0.01% molybdenum) or 1.07% copper equivalent. A 2023 preliminary economic

assessment demonstrated positive economic potential, with a

$230.4 M

post-tax NPV

(5%)

and 29%

post-tax IRR at

US$3.75

/lb copper and

US$1,800

/oz gold. A second case evaluated at

$4.25

/lb

copper and

$2,000

/oz gold returned a

$330.1 M

post-tax NPV

(5%)

and 38% after-tax IRR.

The Carmacks Main Deposit is comprised of three zones, the 147, 2000S and 1213, all of which

remain open to expansion along strike and at depth. Historical drilling at the deposit focused

primarily on oxide copper mineralization, and numerous holes were ended when sulphide

mineralization was encountered. The 1213 Zone in particular hosts very shallow sulphide

mineralization that has seen limited drilling.

Cascadia is in the process of compiling historical geophysical and geochemical data to fully

understand the significant regional potential present at the Carmacks Project (

Figure 3

). Numerous

historical targets will be evaluated in future work programs, including Zone A, where drilling in 1980

returned

13.7 m

of 3.18% copper with 2.01 g/t gold (80-09) and

22.9 m

of 2.27% copper with 2.20

g/t gold (80-18).

About Cascadia

Cascadia's flagship asset is the Carmacks Project in the high-grade Minto Copper Belt in

Yukon

Territory, Canada

.

Cascadia also has a pipeline of discovery stage copper-gold properties throughout the Yukon Stikine

Terrane including its Catch Property, which hosts a copper-gold porphyry discovery where inaugural

drill results returned broad intervals of mineralization (

116.60 m

of 0.31% copper with 0.30 g/t gold).

Catch exhibits extensive high-grade copper and gold mineralization across a 5 km long trend, with

rock samples returning peak values of 3.88% copper, 1,065 g/t gold, and 267 g/t silver.

QA/QC

The Mineral Resources and economic analysis disclosed here are referenced from the 2023

Technical Report on the Carmacks Project Preliminary Economic Assessment, authored by SGS

Canada Inc. Pricing for the Carmacks Project PEA base case economic analysis was US

$3.75

/lb

copper, US

$1,800

/oz gold, and US

$22

/oz silver at an exchange rate of

$1

:

US$0.75

. The results of

the

Carmacks

preliminary economic assessment are preliminary in nature, it includes inferred mineral

resources that are considered too speculative geologically to have the economic considerations

applied to them that would enable them to be categorized as mineral reserves, and there is no

certainty that the preliminary economic assessment will be realized. Estimated true widths vary but

are expected to be typically 60-70% of the intersected widths.

Results referenced in this release represent highlights only. Below detection values for gold, copper,

silver and molybdenum have been encountered in drilling, soil and rock samples in these target

areas. Readers are cautioned that the characterization of the Minto Deposit mineralization described

in this release is not necessarily indicative of mineralization on the Carmacks Project.

Copper equivalent value assumes metal prices of

$3.75

/lb copper,

$2,000

/oz gold,

$25

/lb silver,

$12

/lb molybdenum, and recoveries of 82% for copper, 70% for gold, 69% for silver, and 70% for

molybdenum.

The technical information in this news release has been approved by

Thomas Hawkins

, P.Geo., VP

Exploration for Cascadia and a qualified person for the purposes of National Instrument 43-101.

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 NEWS RELEASE.

Cautionary note regarding forward-looking statements:

This press release may contain "forward-looking information" within the meaning of applicable

securities laws. Readers are cautioned to not place undue reliance on forward-looking information.

Actual results and developments may differ materially from those contemplated by these

statements. The statements in this press release are made as of the date of this press release.

Cascadia undertakes no obligation to update forward-looking information, except as required by

securities laws.

SOURCE

Cascadia Minerals Ltd.

View original content to download multimedia:

http://www.newswire.ca/en/releases/archive/September2025/17/c6313.html

%SEDAR: 00057245E

For further information:

For further information, please contact: Andrew Carne, M.Eng., P.Eng.,

VP Corporate Development, Cascadia Minerals Ltd., T: 604-688-0111 ext. 106,

[email protected]

CO: Cascadia Minerals Ltd.

CNW 08:00e 17-SEP-25