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KLDC.V ·

Kirkland Lake Discoveries Commences 10,000-m Drill Program

Exploration Programs

TSX-V:KLDC

KIRKLAND LAKE DISCOVERIES CORP.

25 Adelaide Street East, Suite 1400, Toronto, Ontario, M5C 3A1 | kirklandlakediscoveries.com | +1 416 363 0317

Kirkland Lake Discoveries Commences 10,000-m Drill

Program

Toronto, Ontario, July 20, 2023 – Kirkland Lake Discoveries Corp. (TSX -V - KLDC) (“ KLDC or the

“Company”) is pleased to announce that the Summer 2023 drill campaign at the Kirkland Lake Project has

commenced. The 10,000-m drill program is planned over three phases and has been initiated at the

Goodfish-Kirana Property to follow up on the Fall 2021 program that intersected visible gold and returned

an assay of 72.10 g/t Au over 0.5 m (see December 24, 2021 News Release).

Plan map of drill targets for Phase 1 of the diamond drill program on the first vertical derivative airborne magnetics at the

Goodfish-Kirana Property.

The 10,000-m drill program will be divided into three phases:

• Phase 1, approximately 3,000 m on the Goodfish-Kirana Property

• Phase 2, approximately 4,000 m on the Lucky Strike Property

• Phase 3, approximately 3,000 m to follow up on phase 1 and 2 drilling

2

The focus of this first phase of drilling will be to follow up on previous successes at the Jo Zone and to test

new targets defined by key structural intersections that have recently been identified from geophysical

surveys, corresponding structural interpretation, and geological analysis.

“Our 2021 drill campaign finished with a fantastic assay at the Jo Zone that included visible gold at a vertical

depth of 301 m (72.1 g/t Au over 0.5 m reported, the other half of core assayed 561 g/t Au) . We will follow

up on the downdip extension of this mineralization as well as test the mineralized footprint of the Jo Zone.

Our 2023 diamond drill program is our largest program to date, and we are excited to be following up at Jo

Zone as well as testing other promising targets,” commented Danièle Spethmann, President and CEO.

In addition to a downdip step out of the Jo Zone, new targets to be tested include:

• T he Sutton Break, a large (500+ m strike length) area that remains untested along the Kirana Break

structure, which is now recognized to coincide with the intersection of prominent NW -trending

structures and a strong chargeability high at depth. Early 2023 fieldwork identified a strongly

silicified and pyritized mafic volcanic unit, the samples of which returned elevated gold assays.

• T he Kirana Break Extension is targeting a large zone of de-magnetization that correlates to a strong

Induced Polarization (I P) response. New structural interpretation suggests a major NW-trending

structure, associated with the Jo Z one, that extends to the SE and intersects the regional Kirana

Break structure.

• The Eastern IP target is an untested strong IP response at depth within a folded volcanic sequence.

• The Chorzepa target drill holes are pla nned to undercut historic al trenches that returned up to

14.75 g/t Au. A previous IP geophysical survey indicates the presence of a broad char geability

anomaly at depth hosted within an intermediate volcanic unit.

As Phase 1 diamond drilling gets underway, additional structural interpretation has begun on the recently

completed M-Pass high-resolution airborne magnetic survey data from the Lucky Strike Property . A field

crew is presently mapping and prospecting on the Lucky Strike Property to better define targets for the

Phase 2 diamond drill program.

Danièle Spethmann stated, “We have boots on the ground advancing targets at the Lucky Strike Property,

and our drill team has successfully mobilized to the Goodfish-Kirana Property after a short delay because

of fire bans across the region. We’ve been developing our exploration drill program with a new team and a

fresh approach and are excited to advance our geological understanding of this newly consolidated district-

scale project.”

QP Statement

Danièle Spethmann, P.Geo., President and CEO and a Director of the Company, is a Qualified Person as

defined by NI 43- 101. Ms. Spethmann has reviewed the technical information in this news release and

approves the written disclosure contained herein.

About Kirkland Lake Discoveries Corp.

Kirkland Lake Discoveries Corp. is a TSX Venture Exchange listed company that has recently consolidated

a district-scale and highly prospective land package in the Kirkland Lake Gold Camp in Ontario, Canada.

The properties are hosted in the Abitibi Greenstone Belt, one of the world’s best-endowed greenstone belts,

with 200+ million ounces of gold produced to date.1 The properties are host to regional and property-scale

mineralized structures that are considered second-order structures off the Larder Lake Cadillac

Deformation Zone (LLCDZ), the regional structure in the belt known to be spatially associated with the gold

mines hosted in the camp.

The properties assembled include the 100%-owned Lucky Strike Property, Goodfish-Kirana, the Arnold

Property, and the optioned KL West (KLW) and KL Central (KLC) P roperties. The KLDC land position

comprises approximately 38,000 ha, over 1,338 claims and 29 patented claims and ranks the Company as

the largest landholder in the Kirkland Lake region.

1 Canada’s Gold Exploration Frontier: The Abitibi Greenstone Belt - https://www.visualcapitalist.com/sp/canadas-gold-exploration-

frontier-the-abitibi-greenstone-belt/

3

For additional information, please contact:

Danièle Spethmann, P.Geo.

President & CEO

kirklandlakediscoveries.com

+1 416 363 0317

[email protected]

The TSX Venture Exchange Inc. has neither approved nor disapproved the contents of this news release.

Neither 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. No stock

exchange, securities commission or other regulatory authority has approved or disapproved the information

contained herein.

Forward-Looking Statements

Certain statements contained in this press release constitute forward- looking information. These

statements relate to future events or future performance. The use of any of the words “could”, “intend”,

“expect”, “believe”, “will”, “projected”, “estimated” and similar expressions and statements relating to matters

that are not historical facts are intended to identify forward- looking information and are based on the

Company’s current belief or assumptions as to the outcome and timing of such future events. Actual future

results may differ materially. Various assumptions or factors are typically applied in drawing conclusions or

making the forecasts or projections set out in forward- looking information. Those assumptions and factors

are based on information currently available to the Company.

The forward-looking information contained in this release is made as of the date hereof, and the Company

is not obligated to update or revise any forward-looking information, whether as a result of new information,

future events or otherwise, except as required by applicable securities laws.

Because of the risks, uncertainties and assumptions contained herein, investors should not place undue

reliance on forward- looking information. The foregoing statements expressly qualify any forward-looking

information contained herein.