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Generation Extends Biiwobik Zone by 150 m, intersects 8.0 m of 3.06% CuEq 350 m north of Marathon Deposit

Drill Results

Generation Extends Biiwobik Zone by 150 m, intersects 8.0 m of 3.06% CuEq

350 m north of Marathon Deposit

TORONTO--(BUSINESS WIRE)--April 23, 2024--Generation Mining Limited (TSX:GENM)

("Gen Mining" or the "Company") is pleased to announce results from the first phase of drilling

at the Biiwobik prospect, immediately north of the Marathon palladium-copper deposit in

Northwestern Ontario. The Company recently announced plans for a multi-phased exploration

program that will target copper dominant and higher-grade palladium group metals (PGM)

prospects within its 26,000 hectare land package (see news release dated March 7, 2024).

Results from the first phase of drilling have returned positive results including 8.0 metres of

0.85% Cu, 2.48 g/t Pd, 0.57 g/t Pt, 0.22 g/t Au (3.06% Copper Equivalent), within a broader 30

metre interval grading 0.41% Cu, 1.02 g/t Pd, 0.24 g/t Pt, and 0.10 g/t Au (1.33% CuEq) in MB-

24-058. Hole MB-24-059 intersected mineralization over 5.0 metres at 0.56% Cu, 1.12 g/t Pd,

0.21 g/t Pt, and 0.15 g/t Au (1.59% CuEq) within a 22 metre interval grading 0.19% Cu, 0.9 g/t

Pd, 0.24 g/t Pt, and 0.10 g/t Au (0.98% CuEq).

Additional drill holes from this program such as MB-24-054 encountered a variety of

mineralization styles including 34 metres of oxide cumulates grading up to 1.37 g/t Pd, 0.13%

Cu, 0.23% Pt and 0.10 g/t Au, as well as a notable 11 metre interval of massive sulphides

containing elevated Pd and Cu values of 0.50 g/t and 0.39% respectively. This along with several

other massive to semi-massive intercepts support the model for back-draining and subsequent

settling of massive sulphides in a feeder conduit setting, and can be used to help vector towards

higher grade intervals in the future. Results from the first phase of the 2024 Biiwobik drill

program are summarized in Table 1 below.

Jamie Levy, President and CEO says, “This is a great start to the drill program. We were

anticipating that the Biiwobik zone drilling would give us an improved understanding of the

potential to extend the current pit included in our Feasibility Study into this area and potentially

increasing mine life and average copper grade. These significant intercepts mark a substantial

step-out of 150 metres from previous drilling and indicates that the overall copper grade

appears to increase in this direction.”

These holes at the Biiwobik zone effectively extend the mineralization approximately 450 metres

north of the Marathon deposit Mineral Resource and confirm that the deposit is open to the north

and at depth. The results also confirm that zones of higher copper mineralization are present and

can be successfully identified. Further drilling programs will aim at extending this zone, with the

possibility of adding an Inferred Mineral Resource in the future with additional drilling success.

The company is confident, that the addition of these six drill holes at Biiwobik will assist in

better understanding the northern extension of the deposit.

Table 1: Summary of results from phase one of the 2024 Biiwobik drill program

HoleID* From To Length (m) Cu (%) Pd (g/t) Pt (g/t) Au (g/t) Ag (g/t) CuEq***

(%) PdEq** (g/t)

MB-24-054 240 256 16 0.08 0.33 0.08 0.04 0.39 0.38 0.56

and 262 296 34 0.11 1.02 0.17 0.08 0.29 0.96 1.41

including 262 282 20 0.13 1.37 0.23 0.1 0.33 1.27 1.85

and 374 385 11 0.39 0.50 0.09 0.04 2.25 0.84 1.22

and 388 416 28 0.34 0.49 0.13 0.05 1.36 0.80 1.17

and 436 450 14 0.33 0.77 0.21 0.05 1.36 1.02 1.49

Including 440 450 10 0.38 0.93 0.26 0.05 1.53 1.21 1.76

MB-24-055 172 198 26 0.07 0.16 0.08 0.04 0.4 0.26 0.38

and 242 272 30 0.11 0.31 0.08 0.05 0.6 0.41 0.60

including 242 262 20 0.04 0.42 0.1 0.05 0.26 0.42 0.62

and 262 272 10 0.25 0.09 0.03 0.04 1.28 0.37 0.55

and 378 384 6 0.15 0.26 0.1 0.06 0.6 0.43 0.64

and 402 430 28 0.11 0.34 0.1 0.03 0.46 0.42 0.62

MB-24-056 168 174 6 0.12 0.5 0.14 0.08 0.5 0.60 0.88

and 194 212 18 0.07 0.33 0.07 0.03 0.4 0.36 0.53

and 422 428 6 0.19 0.39 0.12 0.05 1.87 0.58 0.85

MB-24-057 164 188 24 0.03 0.32 0.09 0.03 0.11 0.32 0.47

and 362 378 16 0.3 0.68 0.15 0.07 1.97 0.92 1.35

MB-24-058 194 208 14 0.11 0.62 0.2 0.07 0.67 0.70 1.02

including 198 208 10 0.13 0.77 0.23 0.08 0.76 0.85 1.24

and 348 378 30 0.41 1.02 0.24 0.1 1.88 1.33 1.95

including 364 372 8 0.85 2.48 0.57 0.22 4 3.06 4.47

and 394 404 10 0.25 0.46 0.07 0.07 0.94 0.67 0.98

MB-24-059 216 250 34 0.05 0.4 0.14 0.08 0.19 0.46 0.68

including 230 236 6 0.11 1.35 0.41 0.19 0.3 1.40 2.04

and 324 346 22 0.19 0.9 0.19 0.08 0.89 0.98 1.43

including 324 329 5 0.56 1.12 0.21 0.15 2.92 1.59 2.32

* Interval lengths of interceptions are assumed to be approximate to true width.

** The Palladium Equivalent (“PdEq”) calculation expressed in g/t is calculated as the sum of

the theoretical in situ value of the constituent metals (Au + Pt + Pd + Cu + Ag) per tonne

divided by the value of one gram of palladium. The calculation makes no provision for expected

metal recoveries or smelter payables. USD per ounce commodity prices of $1,500, $1,100,

$1,800, $26 were used, respectively, for Pd, Pt, Au, Ag and a $3.20/lb value was assigned for

Cu.

*** The Copper Equivalent (“CuEq”) calculation expressed in % is calculated as the sum of the

theoretical in situ value of the constituent metals (Au + Pt + Pd + Cu + Ag) in one tonne

sampled divided by the value of one percent of copper in such one tonne sample. The calculation

makes no provision for expected metal recoveries or smelter payables. USD per ounce

commodity prices of $1,500, $1,100, $1,800, $26 were used, respectively, for Pd, Pt, Au, Ag and

a $3.20/lb value was assigned for Cu.

As part of the initial phase of the Biiwobik program, a geophysical surveying crew have

mobilized to site and will be completing borehole electromagnetic surveys on two of the six

recently drilled holes. The goal of this program is to vector in on zones of higher grade

disseminated to massive sulphides at depth which will be targeted during the next phase of

drilling at Biiwobik.

See attached Figure 1: Plan view of Biiwobik Prospect, showing location of 2024 drilling.

See attached Figure 2: Long section looking east through the entire Biiwobik prospect, showing

the notable intersections from the first phase of 2024 drilling.

Sally Deposit

The company is also pleased to announce that drilling is underway at its Sally deposit, on a

single 1000 metre drillhole where a 2019 borehole electromagnetic survey and subsequent

magnetotelluric survey carried out in 2020 indicate the presence of a large untested conductor

occurring between 600-900 meters depth. Results from this program will be released in the

coming months.

Four Dams

Upon completion of drilling at the Sally deposit, drilling will immediately commence on

multiple targets at the company’s Four Dams prospect. The primary target at Four Dams is a

250-metre-wide by 60-metre-thick ultramafic pipe where drilling by previous operators has

indicated a prospective environment for the settling of high grade massive sulphides at depth (see

news release dated March 7th, 2024).

Property Map and 2024 Exploration Areas

See attached Figure 3: Map of Marathon Palladium project showing locations of 2024

exploration programs.

Quality Assurance/Quality Control

Quality assurance and quality control protocols for the 2024 drilling assay program were

unchanged from previous years and involve a rotating inclusion of one duplicate, blank, low-

grade standard and high-grade standard every 15 samples. All controls are checked to be within a

working limit of 2 standard deviations. Sample intervals are selected in 1 m or 2 m lengths

dependent on the nature of the mineralized zone. The core samples are split on site using a

diamond saw where half of the core is sent for analysis and the other half is securely stored on

site for future reference. All samples are shipped to the ALS Global laboratory in Thunder Bay,

Ontario for processing. Pulp sample material was then sent to the Vancouver ALS facility for

analysis. ALS Minerals is independent of Generation Mining and operates with a quality

management system and complies with the requirements of ISO9001:2008. The quality

management system of ALS is audited both internally and by external parties. The samples were

prepared and sent for multi-element analyses. Palladium, platinum and gold were analysed using

method PGM-ICP23 using a nominal sample weight of 30g. Copper and silver were analysed

using method ME-ICP41 (4 acid digest). Copper and silver grades above 1% and 100 g/t

respectively, triggered an overlimit analysis by method OG46-OL.

About Generation Mining Limited

Gen Mining’s focus is the development of the Marathon Project, a large undeveloped palladium-

copper deposit in Northwestern Ontario, Canada. The Company released the results of the

Feasibility Study Update on March 31, 2023.

The Feasibility Study Update estimated a Net Present Value (using a 6% discount rate) of

C$1.16 billion, an Internal Rate of Return of 25.8%, and a 2.3-year payback. The mine is

expected to produce an average of 166,000 ounces of payable palladium and 41 million pounds

of payable copper per year over a 13-year mine life (“LOM”). Over the LOM, the Marathon

Project is anticipated to produce 2,122,000 ounces of palladium, 517 million lbs of copper,

485,000 ounces of platinum, 158,000 ounces of gold and 3,156,000 ounces of silver in payable

metals. For more information, please review the Feasibility Study Update dated March 31, 2023,

filed under the Company’s profile at www.sedarplus.com or on the Company’s website at

https://genmining.com/projects/feasibility-study/.

The Marathon Property covers a land package of approximately 26,000 hectares, or 260 square

kilometres. Gen Mining owns a 100% interest in the Marathon Project.

Qualified Person

The scientific and technical content of this news release, including the sampling, analytical and

test data underlying the technical content, was reviewed, verified, and approved by Mauro

Bassotti, P.Geo, Vice President Geology of the Company, and a Qualified Person as defined by

Canadian Securities Administrators’ National Instrument 43-101 - Standards of Disclosure for

Mineral Projects.

Forward-Looking Information

This news release contains certain forward-looking information and forward-looking statements,

as defined in applicable securities laws (collectively referred to herein as "forward-looking

statements"). Forward-looking statements reflect current expectations or beliefs regarding future

events or the Company’s future performance. All statements other than statements of historical

fact are forward-looking statements. Often, but not always, forward-looking statements can be

identified by the use of words such as "plans", "expects", "is expected", "budget", "scheduled",

"estimates", "continues", "forecasts", "projects”, “predicts”, “intends”, “anticipates”,

“targets” or “believes”, or variations of, or the negatives of, such words and phrases or state

that certain actions, events or results “may”, “could”, “would”, “should”, “might” or “will”

be taken, occur or be achieved, including statements relating to the final location and depth of

drill holes, surveys and targets; the ability of the current or future exploration programs to

extend feeder zones, target higher grade mineralization, extend mine life, expand or alter

potential mine pit designs; the possibility of future drilling adding to an inferred mineral

resource or increasing potential metal grades in reserves or resources; and the anticipated life

of mine; mineral production estimates, payback period, and financial returns from the Marathon

Project.

Although the Company believes that the expectations expressed in such statements are based on

reasonable assumptions, such statements are not guarantees of future performance and actual

results or developments may differ materially from those in the statements. There are certain

factors that could cause actual results to differ materially from those in the forward-looking

information. These include the timing for a construction decision; the progress of development at

the Marathon Project, including progress of project expenditures and contracting processes, the

Company’s plans and expectations with respect to liquidity management, continued availability

of capital and financing, the future price of palladium and other commodities, permitting

timelines, exchange rates and currency fluctuations, increases in costs, requirements for

additional capital, and the Company’s decisions with respect to capital allocation, and the

impact of COVID-19, inflation, global supply chain disruptions, global conflicts, including the

wars in Ukraine and Israel, the project schedule for the Marathon Project, key inputs, staffing

and contractors, commodity price volatility, continued availability of capital and financing,

uncertainties involved in interpreting geological data, environmental compliance and changes in

environmental legislation and regulation, the Company’s relationships with First Nations

communities, results from planned exploration and drilling activities, local access conditions for

drilling, and general economic, market or business conditions, as well as those risk factors set

out in the Company’s annual information form for the year ended December 31, 2022, and in the

continuous disclosure documents filed by the Company on SEDAR+ at www.sedarplus.ca.

Readers are cautioned that the foregoing list of factors is not exhaustive of the factors that may

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

forward-looking statements. The forward-looking statements in this news release speak only as

of the date of this news release or as of the date or dates specified in such statements.

Exploration results that include geophysics, sampling, and drill results on wide spacings may not

be indicative of the occurrence of a mineral deposit. Such results do not provide assurance that

further work will establish sufficient grade, continuity, metallurgical characteristics and

economic potential to be classed as a category of mineral resource. Forward-looking statements

are based on a number of assumptions which may prove to be incorrect, including, but not

limited to, assumptions relating to: the availability of financing for the Company’s operations;

operating and capital costs; results of operations; the mine development and production

schedule and related costs; the supply and demand for, and the level and volatility of commodity

prices; timing of the receipt of regulatory and governmental approvals for development projects

and other operations; the accuracy of Mineral Reserve and Mineral Resource Estimates,

production estimates and capital and operating cost estimates; and general business and

economic conditions.

Investors are cautioned that any such statements are not guarantees of future performance and

actual results or developments may differ materially from those projected in the forward-looking

information. For more information on the Company, investors are encouraged to review the

Company’s public filings on SEDAR+ at www.sedarplus.ca. The Company disclaims any

intention or obligation to update or revise any forward- looking information, whether as a result

of new information, future events or otherwise, other than as required by law.

Contacts

For further information:

Jamie Levy

President and Chief Executive Officer

(416) 640-2934 (O)

(416) 567-2440 (M)

[email protected]