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Magna Mining Announces Assay Results and Provides an Update on the McCreedy West Mine Assay Results Include 24.9% Cu, 0.4% Ni & 5.0 g/t Pt + Pd + Au Over 1.6 Metres at Levack Mine

Drill Results

Magna Mining Announces Assay Results and

Provides an Update on the McCreedy West

Mine

Assay Results Include 24.9% Cu, 0.4% Ni & 5.0 g/t Pt + Pd + Au

Over 1.6 Metres at Levack Mine

Sudbury, Ontario--(Newsfile Corp. - March 31, 2025) - Magna Mining Inc. (TSXV: NICU) (OTCQB:

MGMNF) (FSE: 8YD) ("Magna" or the "Company") is pleased to announce assay results from the

producing McCreedy West Mine and the adjacent Levack Mine (Figure 1). Drilling at McCreedy West

was focused on the 700 Footwall Cu-PGE zone resource expansion and definition in support of mid-

term production planning, and targeted areas near historical mining. Drilling at Levack was targeting the

near surface Keel Footwall Cu zone.

Highlights from the new assay results include:

McCreedy West Mine

FNX33323: 4.4% Cu, 0.6% Ni, 13.8 g/t Pt + Pd + Au over 18.0 metres

Including

8.2% Cu, 0.8% Ni, 7.5 g/t Pt + Pd + Au

over 7.3 metres

FNX33338: 8.7% Cu, 0.3% Ni, 32.8 g/t Pt + Pd + Au

over 3.2 metres

And

3.7% Cu, 3.1% Ni, 2.8 g/t Pt + Pd + Au

over 17.5 metres

FNX33361: 4.3% Cu, 5.0% Ni, 3.6 g/t Pt + Pd + Au over 2.9 metres

Levack Mine

FNX33323: 12.2 % Cu, 0.5% Ni, 2.8 g/t Pt + Pd + Au over 3.4 metres

Including

24.9% Cu, 0.4% Ni, 5.0 g/t Pt + Pd + Au over 1.6 metres

Dave King, S.V.P. Exploration and Geoscience for Magna Mining stated: "Magna is pleased to be able

to announce the first assays received from diamond drilling under Magna's management since taking

ownership of the mine on February 28, 2025. The results today include high grade copper intersections

at the McCreedy West and Levack Mines, which continue to demonstrate the quality of resources

remaining at both sites. We look forward to providing additional updates as we continue to advance our

understanding of these deposits, and as more drilling results become available over the coming

months."

McCreedy West Mine 2025 Drilling

Currently there are two drills active underground at McCreedy West supporting ongoing production and

longer-term planning. Drilling results released today are from the first drillholes completed by Magna

mining and are targeting mineralized remnant pillars within the 700 Footwall Zone (Figures 2 and 3).

Results include

4.4% Cu, 0.6% Ni, 13.8 g/t Pt + Pd + Au over 18.0 metres

, including

8.2% Cu, 0.8%

Ni, 7.5 g/t Pt + Pd + Au over 7.3 metres

in drillhole FNX33323. A summary of assay results is

presented in Table 1 and drillhole collar information is provided in Table 2.

Levack Mine 2025 Drilling Program

The Levack Mine (Figure 4) was in production by KGHM until 2019 and is currently in care and

maintenance. There are two surface diamond drillholes active at Levack, with a third drill scheduled to

mobilize to site in April. The 2025 drilling program at Levack is designed to support the Magna Mining

internal Levack Mine restart study and exploration for new footwall and contact style deposits. The initial

diamond drilling is focussed on defining near surface mineralization in the footwall of the main orebody

and defining the unmined Keel FW zone (Figure 4). Definition drilling within the Keel zone will also

provide material to be used for metallurgical test work. Results from the first drillhole completed by

Magna mining included

24.9% Cu, 0.4% Ni & 5.0 g/t Pt + Pd + Au Over 1.6 metres

in drillhole MLV-

25-01. See Table 1 for a complete summary of assay results.

Figure 1:

Magna Mining - Current Properties in the Sudbury Basin.

To view an enhanced version of this graphic, please visit:

https://images.newsfilecorp.com/files/8002/246644_777bc052241de8b8_002full.jpg

Figure 2:

McCreedy West Mine 3D Oblique View Showing the Location of Mineralized Zones

and the Location of Figure 3 Plan View.

To view an enhanced version of this graphic, please visit:

https://images.newsfilecorp.com/files/8002/246644_777bc052241de8b8_003full.jpg

Figure 3:

McCreedy West Mine Plan View, Showing the Mined Stopes with Respect to the

Location of Drillhole FNX33323.

To view an enhanced version of this graphic, please visit:

https://images.newsfilecorp.com/files/8002/246644_777bc052241de8b8_004full.jpg

Figure 4:

Levack Mine Longitudinal Section Showing the Location of Mineralized Zones, and

Vertical Section Showing the Location of the Keel Footwall Zone.

To view an enhanced version of this graphic, please visit:

https://images.newsfilecorp.com/files/8002/246644_777bc052241de8b8_005full.jpg

Table 1:

Summary of Drillhole Results from McCreedy West and Levack Drilling

Drillhole

Zone

From (m)

To (m)

Length

(m)

Cu %

Ni %

Co %

Pt g/t

Pd g/t

Au g/t

TPM g/t

NiEq

CuEq

FNX33323

700 FW

7.47

8.84

1.37

6.54

0.44

0.01

5.52

7.23

1.04

13.79

5.99

10.67

and

37.95

41.15

3.20

1.37

1.26

0.01

7.00

3.79

1.29

12.08

3.71

6.60

and

50.75

51.66

0.91

20.65

0.18

0.00

13.87

13.52

4.72

32.11

16.49

29.35

and

87.17

105.16

17.98

4.42

0.58

0.01

1.38

2.21

0.47

4.06

3.52

6.26

Including

90.53

97.84

7.32

8.24

0.76

0.01

2.50

4.17

0.87

7.54

6.27

11.17

FNX33338

700 FW

36.73

39.93

3.20

8.73

0.28

0.00

6.20

12.20

14.44

32.84

11.82

21.05

and

167.18

184.71

17.53

3.69

3.08

0.04

1.16

1.40

0.22

2.79

5.07

9.03

Including

177.85

184.71

6.86

5.10

3.95

0.04

1.50

1.89

0.06

3.45

6.64

11.82

FNX33361

700 FW

155.14

158.04

2.90

4.30

5.03

0.07

1.65

1.86

0.10

3.61

7.18

12.78

MLV-25-

01

Keel

239.97

240.26

0.29

11.79

0.02

0.01

0.03

0.01

0.02

0.06

6.36

11.33

and

288.40

291.80

3.40

12.24

0.52

0.01

0.73

1.45

0.66

2.84

7.51

13.38

Including

290.17

291.80

1.63

24.93

0.43

0.01

0.88

2.85

1.31

5.04

14.67

26.11

All lengths are downhole length. True widths are uncertain at this time.

Ni Eq % = (Ni% x 85% Recovery 2204 x Ni Price $/lb) + (Cu% x 96% Recovery x 2204 x Cu Price $/lb) + (Co% x 56% Recovery x 2204 x Co Price $/lb) +

(Pt gpt x 69% Recovery / 31.1035 x Pt $/oz) +(Pd gpt x 68% Recovery / 31.1035 x Pd $/oz) + (Au gpt x 68% Recovery / 31.1035 x Au $/oz))/2204 x Ni

$/lb.

Cu Eq % = (Ni% x 85% Recovery 2204 x Ni Price $/lb) + (Cu% x 96% Recovery x 2204 x Cu Price $/lb) + (Co% x 56% Recovery x 2204 x Co Price $/lb) +

(Pt gpt x 69% Recovery / 31.1035 x Pt $/oz) +(Pd gpt x 68% Recovery / 31.1035 x Pd $/oz) + (Au gpt x 68% Recovery / 31.1035 x Au $/oz))/2204 x Cui

$/lb.

Metal prices in US$: $7.30/lb Ni, $4.10/lb Cu, $15.00/lb Co, $1,000/oz Pt, $1,050/oz Pd and $2,200/oz Au.

Table 2:

Drillhole Collar Coordinates

BHID

Easting

Northing

Elevation

Azimuth

Dip

Depth (m)

MLV-25-01

471511

5166871

377

227

-56

400

FNX33323

469649

5164908

2

181.4

17

108

FNX33338

469835

5164878

-48

211.4

2

186

FNX33361

469835

5164878

-48

204.4

2

162

*Drillhole Coordinates are in Coordinate System NAD 83 Zone 17

Update on the McCreedy West Mine

Magna Mining assumed ownership of the McCreedy West Mine following the closing of the acquisition of

a subsidiary of KGHM on February 28, 2025. Upon closing, production at the mine was governed by the

prior operational plan which was approved and implemented by KGHM. Magna immediately undertook

multiple operational improvement initiatives during the first week of ownership, and the Company is

pleased with the current progress of these initiatives.

These initiatives are aimed streamlining

processes, improving grade control and increasing efficiency, and there is a renewed focus on

underground development. Magna anticipates that increased development will result in additional ore

mining areas that can be accessed within the mine, subsequently increasing production flexibility, stope

sequencing and efficiency of the operation. Magna intends to provide more detailed production plans for

the McCreedy West mine before the end of Q2.

Jason Jessup, CEO of Magna stated "The assay results today highlight the potential opportunity to

increase production grades at our McCreedy West Mine and incorporate high grade copper footwall

veins into a restart plan for Levack Mine. The exploration drilling at Levack Mine is being accelerated

with a third diamond drill rig in April. We have begun the necessary investments and changes at the

McCreedy West Mine to bring it to what we believe is an optimal, sustainable production level. One of

the keys to successfully growing production will to be increasing the amount of capital development

within the mine, which will facilitate access to additional ore mining workplaces. This will require some

time and a modest capital investment, but we see the opportunity to continue to grow production and set

up the mine for a strong 2026 and beyond."

Investor Rights Agreement with Dundee Corporation

Magna and Dundee Resources Limited ("Dundee") entered into an investor rights agreement effective

as of July 23, 2024 (the "Investor Rights Agreement") pursuant to which Dundee is entitled to certain

customary investor rights, provided that Dundee maintains certain equity ownership thresholds in Magna

and satisfies certain other conditions. Among other things, the Investor Rights Agreement provides

Dundee with (i) the right to designate one director for appointment to the board of directors of Magna, (ii)

the right to participate in certain financings completed by Magna, and (iii) information rights.

A copy of the Investor Rights Agreement is available on SEDAR+ (

www.sedarplus.ca

) under Magna's

issuer profile.

Qualified Person

The technical information in this press release has been reviewed and approved by David King, M.Sc.,

P.Geo. Mr. King is the Senior Vice President, Exploration and Geoscience for Magna Mining Inc. and is

a qualified person under Canadian National Instrument 43-101.

QAQC

Sample QA/QC procedures for Magna have been designed to meet or exceed industry standards. Drill

core is collected from the diamond drill and placed in sealed core trays for transport to Magna's core

facilities. The core is then logged, and samples marked in intervals of up to 1.5m. Samples are then put

into plastic bags with 10 bagged samples being placed into rice bags for transport to Swastika

Laboratories in Kirkland Lake Ontario via Gardewine Transport for preparation and analysis.

Samples

are submitted in batches of 50 with 5 QA/QC samples including, 2 certified reference material

standards, 2 samples of blank material and 1 lab duplicate.

About Magna Mining Inc.

Magna Mining is a producing mining company with a portfolio of copper, nickel and PGM operating,

exploration and development projects in the Sudbury Region of Ontario, Canada. The Company's

primary assets are the producing McCreedy West copper mine and the past producing Levack,

Podolsky, Shakespeare and Crean Hill mines. Additional information about the Company is available on

SEDAR (www.sedar.com) and on the Company's website (

www.magnamining.com

).

For further information, please contact:

Jason Jessup

Chief Executive Officer

or

Paul Fowler, CFA

Senior Vice President

705-482-9667

Email:

[email protected]

Cautionary Statement

This press release contains certain forward-looking information or forward-looking statements as

defined in applicable securities laws. Forward-looking statements are not historical facts and are

subject to several risks and uncertainties beyond the Company's control, including statements

regarding, the production and exploration potential of the McCreedy West Mine and Levack Mine,

production and operational objectives, plans to complete exploration programs, potential

mineralization, exploration results and statements regarding beliefs, plans, expectations, or intentions

of the Company. Resource exploration and development is highly speculative, characterized by

several significant risks, which even a combination of careful evaluation, experience and knowledge

may not eliminate. All forward-looking statements herein are qualified by this cautionary statement.

Accordingly, readers should not place undue reliance on forward-looking statements. The Company

undertakes no obligation to update publicly or otherwise revise any forward-looking statements

whether as a result of new information or future events or otherwise, except as may be required by law.

A production decision at the McCreedy West mine was made by the previous operator of the mine,

and Magna has made a decision to continue production subsequent to the completion of the

Acquisition. This decision by Magna to continue production following completion of the Acquisition

and, to the knowledge of Magna, the prior production decision by the current operator, were not based

on a feasibility study of mineral reserves, demonstrating economic and technical viability, and, as a

result, there may be an increased uncertainty of achieving any particular level of recovery of minerals

or the cost of such recovery, which include increased risks associated with developing a commercially

mineable deposit. Historically, such projects have a much higher risk of economic and technical

failure. There is no guarantee that anticipated production results and costs will be achieved. Failure to

achieve the anticipated production costs would have a material adverse impact on Magna's cash flow

and future profitability. Readers are cautioned that there is increased uncertainty and higher risk of

economic and technical failure associated with such production decisions.

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

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

press release.

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

https://www.newsfilecorp.com/release/246644