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Radisson Announces Additional Assay Results from 2024 Drill Program at O'Brien Including 8.36 g/t Gold over 15 Metres

Drill Results

Radisson Announces Additional Assay

Results from 2024 Drill Program at O'Brien

Including 8.36 g/t Gold over 15 Metres

Rouyn-Noranda, Quebec--(Newsfile Corp. - February 26, 2025) -

Radisson Mining Resources Inc.

(TSXV: RDS) (OTCQB: RMRDF)

("

Radisson

" or the "

Company

") is pleased to announce additional

drill assay results from its 100%-owned O'Brien Gold Project ("

O'Brien

" or the "

Project

") located in the

Abitibi region of Québec.

The seventeen drill holes reported were completed as part of the 35,000 metre, 2024 drill program

designed to increase the scope of gold mineralization at the Project with a combination of deep and

shallow drill holes. Prior to the end of last year, Radisson released the results of several deep drill holes

which demonstrated high grade mineralization at substantial step-outs below the base of the current

Mineral Resource and below the historic O'Brien Mine workings (

see Radisson News Releases dated

September 24, 2024

,

October 30, 2024

and

December 16, 2024

). Today's results represent shallower

drilling at the margins, or within, the existing Mineral Resource over the Project's "Trends 1, 2 and 3".

The new data continue to demonstrate the Project's characteristic narrow and high-grade gold

mineralization within quartz-sulphide veins.

Results Highlights:

OB-24-358

intersected 8.36 grams per tonne ("g/t") gold ("Au") over 15.0 metres within a broad

mineralized interval with multiple veins, including 56.0 g/t Au over 1.0 metre and 41.1 g/t Au over

1.0 metre;

OB-24-327

intersected 10.32 g/t Au over 4.1 metres including 18.30 g/t Au over 1.5 metres;

OB-24-350

intersected 46.40 g/t Au over 1.0 metre;

OB-24-339

intersected 10.05 g/t Au over 1.3 metres; and

OB-24-351

intersected 9.89 g/t Au over 2.9 metres including 17.90 g/t Au over 1.4 metres

Matt Manson, President & CEO, commented:

"We are reporting today results from drill holes

completed during the fall as part of our 2024 drill program. They demonstrate the type of narrow high-

grade intercepts within broader mineralized envelopes that are so characteristic of the O'Brien Gold

Project and serve to fill out our interpretation of mineralization in and around the existing Mineral

Resources. Our drilling priorities in 2024 represented a balance between shallower targets within the

existing Mineral Resource model, and deeper step-outs geared to new discovery. The deep step-outs

greatly exceeded our expectations. They included the deepest hole ever drilled at the Project, OB-24-

337, which returned 31.24 g/t Au over 8 metres a full 500 metres beneath the historic mine workings,

and OB-24-324 which returned 27.61 g/t Au over 6.0 metres 170 metres beneath the base of our

"Trend #1". The results for these deep drill holes were prioritised in the laboratory, so as to guide

planning for the 2025 drill program, which is almost exclusively aimed at extending O'Brien's gold

mineralization to depth as well as following up on the recently re-discovered "Jewellery Box" zone. The

22,000 metre 2025 drill program is proceeding well with three rigs at site with a steady flow of results

expected."

Figure 1

: Long Section and Plan View of Gold Vein Mineralization and Mineral Resources at the

O'Brien Gold Project, with Today's Drill Holes Illustrated.

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

https://images.newsfilecorp.com/files/10977/242419_9da529e12434fa28_001full.jpg

Gold Mineralization at O'Brien

Gold mineralizing quartz-sulphide veins at O'Brien occur within a thin band of interlayered mafic volcanic

rocks, conglomerates, and porphyric andesitic sills of the Piché Group occurring in contact with the east-

west oriented Larder Lake-Cadillac Break ("LLCB"). Gold, along with pyrite and arsenopyrite, is typically

associated with shearing and a pervasive biotite alteration, and developed within multiple Piché Group

lithologies and, occasionally, the hanging-wall Pontiac and footwall Cadillac meta-sedimentary rocks.

Table 1

: Detailed Assay Results from Drill Holes OB-24-327 to OB-24-358

DDH

Zone

From (m)

To (m)

Core Length (m)

Au g/t - Uncut

Host Lithology

OB-24-327

Trend # 1

225.9

230.0

4.1

10.32

V3-S

Including

228.5

230.0

1.5

18.30

V3-S

295.9

296.9

1.0

4.27

V3-CEN

OB-24-334

Trend # 2

296.5

300.6

4.1

3.63

V3-S

320.7

322.7

2.0

6.69

V3-S/POR-S

OB-24-335

Trend # 2

339.2

345.7

6.5

4.28

V3-S

Including

340.7

343.2

2.5

7.93

V3-S

OB-24-335

Trend # 2

413.5

415.6

2.1

4.34

V3-N

OB-24-339

Trend # 1

437.0

438.3

1.3

10.05

POR-S

533.1

534.1

1.0

3.84

V3-N

536.9

537.9

1.0

5.80

V3-N

OB-24-340

Trend # 3

304.1

305.6

1.5

6.80

PON-S3

OB-24-341

Trend # 1

541.7

543.0

1.3

6.50

S3P

OB-24-342

Trend # 3

325.3

326.3

1.0

3.67

V3-S

OB-24-344

Trend # 1

313.0

314.0

1.0

4.19

S1P

OB-24-345

Trend # 1

569.0

570.0

1.0

3.84

TX

OB-24-350

Trend # 1

20.5

21.5

1.0

46.40

V3-S

94.4

96.6

2.3

3.71

V3-N

OB-24-351

Trend # 1

158.0

159.0

1.0

3.92

S1P

183.5

186.4

2.9

9.89

TX

Including

185.0

186.4

1.4

17.90

TX

190.3

191.0

0.7

4.22

V3-N

OB-24-358

Trend # 3

353.9

355.2

1.3

5.08

V3-S

386.0

387.0

1.0

5.26

V3-S

417.9

432.9

15.0

8.36

POR-N/V3-N

Including

417.9

418.9

1.0

41.10

POR-N

Including

430.9

431.9

1.0

56.00

V3-N

456.5

458.0

1.5

3.92

ZFLLC

Notes on Calculation of Drill Intercepts:

The O'Brien Gold Project March 2023 Mineral Resource Estimate ("MRE") utilizes a 4.50 g/t Au bottom cutoff, a US$1600 gold price, a minimum

mining width of 1.2 metres, and a 40 g/t Au upper cap on composites. Intercepts presented in Table 1 are calculated with a 3.00 g/t Au bottom cut-

off, representing the lower limit of cut-off sensitivity presented in the March 2023 MRE. This methodology differs from previous Radisson

disclosure, and intercepts reported in this release may not be directly comparable to historical published intercepts. Sample grades are

uncapped. True widths, based on depth of intercept and drill hole inclination, are estimated to be 30-80% of core length. Table 2 presents

additional drill intercepts calculated with a 1.00 g/t bottom cut-off over a minimum 1.0 metre core length so as to illustrate the frequency and

continuity of mineralized intervals within which high-grade gold veins at O'Brien are developed. Drill holes OB-24-328, OB-24-336, OB-24-338,

OB-24-343 and OB-24-348 did not return any intercepts averaging above 3.00 g/t Au. Lithology Codes: PON-S3: Pontiac Sediments; V3-S, V3-N,

V3-CEN: Basalt-South, North, Central; S1P, S3P: Conglomerate; POR-S, POR-N: Porphyry South, North; TX: Crystal Tuff; ZFLLC: Larder Lake-

Cadillac Fault Zone

Figure 2

: Cross Section of Trend 1 including drill holes OB-24-327, 339, 350 & 351.

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

https://images.newsfilecorp.com/files/10977/242419_9da529e12434fa28_002full.jpg

As mapped at the historic O'Brien mine, and now replicated in the modern drilling, individual veins are

generally narrow, ranging from several centimetres up to several metres in thickness. Multiple veins

occur sub-parallel to each other, as well as sub-parallel to the Piché lithologies and the LLCB. Individual

veins have well-established lateral continuity, with near-vertical, high-grade shoots developed over

significant lengths.

The historic O'Brien mine produced over half a million ounces of gold from such veins and shoots at an

average grade exceeding 15 g/t and over a vertical extent of at least 1,000 metres. Recent exploration

has focussed on delineating well developed vein mineralization to the east of the historic mine, with

additional high-grade shoots becoming evident in the exploration data over what has been described as

a series of repeating trends ("Trend #s 0 to 5").

Based on drilling complete to the end of 2022, the Project has estimated Indicated Mineral Resources of

0.50 million ounces (1.52 million tonnes at 10.26 g/t Au), with additional Inferred Mineral Resources of

0.45 million ounces (1.60 million tonnes at 8.66 g/t Au). Mineral Resources that are not Mineral Reserves

do not have demonstrated economic viability.

Table 2

: Detailed Assay Results (see "Notes on Calculation of Drill Intercepts")

DDH

Zone

From (m)

To (m)

Core Length (m)

Au g/t - Uncut

Host Lithology

OB-24-327

Trend # 1

225.9

230.0

4.1

10.32

V3-S

Including

228.5

230.0

1.5

18.30

V3-S

256.0

257.0

1.0

1.99

V3-S

295.9

296.9

1.0

4.27

V3-CEN

OB-24-328

Trend # 1

327.1

330.1

3.0

1.31

S3P

OB-24-334

Trend # 2

296.5

300.6

4.1

3.63

V3-S

320.7

322.7

2.0

6.69

V3-S/POR-S

356.5

357.8

1.3

1.09

POR_N

OB-24-335

Trend # 2

200.5

202.0

1.5

1.01

PON-S3

264.0

265.5

1.5

1.31

PON-S3

339.2

345.7

6.5

4.28

V3-S

Including

340.7

343.2

2.5

7.93

V3-S

360.1

361.6

1.5

2.06

V3-S

373.0

374.0

1.0

1.19

POR-S

394.6

406.1

11.5

1.09

POR-N/TX

409.1

410.6

1.5

1.41

V3-N

413.5

415.6

2.1

4.34

V3-N

OB-24-336

Trend # 2

200.0

201.1

1.1

1.06

PON-S3

354.6

355.9

1.3

1.40

POR-S

388.3

389.4

1.1

1.45

TX

390.5

391.8

1.3

1.09

V3-N

OB-24-338

Trend # 1

456.7

463.5

6.8

1.37

POR-N/TX

480.0

484.6

4.6

1.68

V3-N

OB-24-339

Trend # 1

412.4

415.1

2.7

1.88

V3-S

430.1

431.1

1.0

1.55

V3-S

437.0

438.3

1.3

10.05

POR-S

471.7

473.0

1.3

2.29

S1P

521.3

522.6

1.3

2.47

V3-N

531.5

539.0

7.5

2.28

V3-N

Including

533.1

534.1

1.0

3.84

V3-N

Including

536.9

537.9

1.0

5.80

V3-N

OB-24-340

Trend # 3

302.1

303.1

1.0

1.12

PON-S3

304.1

305.6

1.5

6.80

PON-S3

397.0

400.8

3.8

1.03

V3-S

409.4

410.9

1.5

1.60

V3-S

469.2

470.4

1.3

1.19

POR-S

491.8

493.6

1.8

1.67

V3-N

OB-24-341

Trend # 1

393.3

398.0

4.7

1.03

V3-S

423.0

424.0

1.0

1.50

POR-S

457.4

458.9

1.5

1.52

S1P

472.3

475.3

3.0

1.33

S1P

483.7

484.7

1.0

1.25

POR-N

541.7

543.0

1.3

6.50

S3P

OB-24-342

Trend # 3

325.3

326.3

1.0

3.67

V3-S

332.0

333.1

1.1

1.42

V3-S

341.0

342.0

1.0

2.81

POR-S

349.0

350.1

1.1

2.75

V3-CEN

366.2

367.3

1.1

1.49

POR-N

OB-24-343

Trend # 3

135.5

137.0

1.5

2.93

PON-S3

489.2

491.3

2.1

2.29

V3-C/S1P

OB-24-344

Trend # 1

195.0

196.5

1.5

1.24

PON-S3

224.5

225.8

1.3

1.11

V3-S

241.6

244.2

2.6

2.20

V3-S

299.5

300.4

0.9

1.14

S1P

311.0

314.0

3.0

2.03

S1P

Including

313.0

314.0

1.0

4.19

S1P

322.8

323.8

1.0

1.25

POR-N

356.5

358.0

1.5

1.28

S3P

OB-24-345

Trend # 1

227.0

228.0

1.0

1.04

PON-S3

250.5

251.7

1.2

2.53

PON-S3

493.5

494.5

1.0

1.57

POR-S

512.0

513.0

1.0

1.67

S1P

536.5

538.0

1.5

1.02

S1P

566.0

571.5

5.5

1.72

TX

Including

569.0

570.0

1.0

3.84

TX

584.9

586.4

1.5

1.77

S3P

589.4

591.5

2.1

1.27

S3P

OB-24-348

Trend # 2

314.5

315.5

1.0

1.60

S1P

332.8

334.1

1.3

1.55

POR-N

344.0

345.0

3.8

1.08

V3-N

OB-24-350

Trend # 1

20.5

21.5

1.0

46.40

V3-S

65.0

66.0

1.0

1.38

S1P

71.5

73.5

2.0

1.26

S1P

90.2

91.1

0.9

1.94

POR-N

94.4

96.6

2.3

3.71

V3-N

OB-24-351

Trend # 1

139.1

141.9

2.8

1.12

POR-S

158.0

159.0

1.0

3.92

S1P

183.5

186.4

2.9

9.89

TX

Including

185.0

186.4

1.4

17.90

TX

190.3

191.0

0.7

4.22

V3-N

OB-24-358

Trend # 3

318.0

319.0

1.0

2.09

PON-S3

322.0

323.0

1.0

1.17

PON-S3

353.9

355.2

1.3

5.08

V3-S

386.0

387.0

1.0

5.26

V3-S

401.4

402.4

1.0

1.76

POR-S

417.9

432.9

15.0

8.36

POR-N/V3-N

Including

417.9

418.9

1.0

41.10

POR-N

Including

430.9

431.9

1.0

56.00

V3-N

447.0

448.0

1.0

1.68

S3P

456.5

458.0

1.5

3.92

ZFLLC

Table 3

: Drill Hole Collar Information for Holes contained in this News Release.

DDH

Zone

Easting

Northing

Azimuth

Dip

Hole Length (m)

OB-24-327

Trend # 1

693974

5345444

358

-57

321

OB-24-328

Trend # 1

693877

5345431

355

-57

339

OB-24-334

Trend # 2

694352

5345390

353

-63

396

OB-24-335

Trend # 2

694352

5345390

355

-67

438

OB-24-336

Trend # 2

694281

5345388

358

-64

417

OB-24-338

Trend # 1

693953

5345403

357

-74

498

OB-24-339

Trend # 1

693953

5345403

14

-72

549

OB-24-340

Trend # 3

694590

5345442

342

-75

506

OB-24-341

Trend # 1

693875

5345432

6

-74

563

OB-24-342

Trend # 3

694521

5345405

358

-63

405

OB-24-343

Trend # 3

694496

5345361

353

-71

537

OB-24-344

Trend # 1

693875

5345432

349

-60

372

OB-24-345

Trend # 1

694105

5345410

349

-76

608

OB-24-348

Trend # 2

694106

5345409

11

-59

384

OB-24-350

Trend # 1

693988

5345557

356

-49

120

OB-24-351

Trend # 1

693970

5345508

355

-47

191

OB-24-358

Trend # 3

694666

5345348

349

-60

460

QA/QC

All drill cores in this campaign are NQ in size. Assays were completed on sawn half-cores, with the

second half kept for future reference. The samples were analyzed using standard fire assay procedures

with Atomic Absorption (AA) finish at ALS Laboratory Ltd, in Val-d'Or, Quebec. Samples yielding a

grade higher than 10 g/t Au were analyzed a second time by fire assay with gravimetric finish at the

same laboratory. Mineralized zones containing visible gold were analyzed with metallic sieve procedure.

Standard reference materials, blank samples and duplicates were inserted prior to shipment for quality

assurance and quality control (QA/QC) program.

Qualified Person 

Disclosure of a scientific or technical nature in this news release was prepared under the supervision of

Mr. Richard Nieminen, P.Geo, (QC), a geological consultant for Radisson and a Qualified Person for

purposes of NI 43-101. Mr. Nieminen is independent of Radisson and the O'Brien Gold Project.

Radisson Mining Resources Inc.

Radisson is a gold exploration company focused on its 100% owned O'Brien Gold Project, located in the

Bousquet-Cadillac mining camp along the world-renowned Larder-Lake-Cadillac Break in Abitibi,

Québec. The Bousquet-Cadillac mining camp has produced over 25 million ounces of gold over the last

100 years. The Project hosts the former O'Brien Mine, considered to have been Québec's highest-grade

gold producer during its production. Indicated Mineral Resources are estimated at 0.50 million ounces

(1.52 million tonnes at 10.26 g/t Au), with additional Inferred Mineral Resources estimated at 0.45 million

ounces (1.60 million tonnes at 8.66 g/t Au). Please see the NI 43-101 "Technical Report on the O'Brien

Project, Northwestern Québec, Canada" effective March 2, 2023, Radisson's Annual Information Form

for the year ended December 31, 2023 and other filings made with Canadian securities regulatory

authorities available at

www.sedar.com

for further details and assumptions relating to the O'Brien Gold

Project.

For more information on Radisson, visit our website at

www.radissonmining.com

or contact:

Matt Manson

President and CEO

416.618.5885

[email protected]

Kristina Pillon

Manager, Investor Relations

604.908.1695

[email protected]

Forward-Looking Statements

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

Canadian securities legislation that is based on expectations, estimates, projections, and

interpretations as at the date of this news release. Forward-looking statements including, but are not

limited to, statements with respect to planned and ongoing drilling, the significance of drill results, the

ability to continue drilling, the impact of drilling on the definition of any resource, the ability to

incorporate new drilling in an updated technical report and resource modelling, the Company's ability

to grow the O'Brien project and the ability to convert inferred mineral resources to indicated mineral

resources. Any statement that involves discussions with respect to predictions, expectations,

interpretations, beliefs, plans, projections, objectives, assumptions, future events or performance

(often but not always using phrases such as "expects", or "does not expect", "is expected",

"interpreted", "management's view", "anticipates" or "does not anticipate", "plans", "budget",

"scheduled", "forecasts", "estimates", "believes" or "intends" or variations of such words and phrases

or stating that certain actions, events or results "may" or "could", "would", "might" or "will" be taken to

occur or be achieved) are not statements of historical fact and may be forward-looking information and

are intended to identify forward-looking information. Except for statements of historical fact relating to

the Company, certain information contained herein constitutes forward-looking statements Forward-

looking information is based on estimates of management of the Company, at the time it was made,

involves known and unknown risks, uncertainties and other factors which may cause the actual results,

performance or achievements of the companies to be materially different from any future results,

performance or achievements expressed or implied by such forward-looking information. Such factors

include, among others, risks relating to the drill results at O'Brien; the significance of drill results; the

ability of drill results to accurately predict mineralization; the ability of any material to be mined in a

matter that is economic. Although the forward-looking information contained in this news release is

based upon what management believes, or believed at the time, to be reasonable assumptions, the

parties cannot assure shareholders and prospective purchasers of securities that actual results will be

consistent with such forward-looking information, as there may be other factors that cause results not

to be as anticipated, estimated or intended, and neither the Company nor any other person assumes

responsibility for the accuracy and completeness of any such forward-looking information. The

Company believes that this forward-looking information is based on reasonable assumptions, but no

assurance can be given that these expectations will prove to be correct and such forward-looking

statements included in this press release should not be unduly relied upon. The Company does not

undertake, and assumes no obligation, to update or revise any such forward-looking statements or

forward-looking information contained herein to reflect new events or circumstances, except as may

be required by law. These statements speak only as of the date of this news release.

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. No stock exchange, securities commission or other regulatory authority has approved