Mr. Tyler Caswell reports

NORTHWEST COPPER ANNOUNCES START OF 2024 LORRAINE - TOP CAT EXPLORATION DRILL PROGRAM

Crews have mobilized to the field and drilling is expected to begin mid-July at Northwest Copper Corp.'s Lorraine/Top Cat project in north-central British Columbia. This is the first drill program for Northwest in 2024. It is an integral component of the company's shareholder value objective to grow the company's mineral resource base through exploration.

Approximately 1,000 metres of drilling are planned at Lorraine/Top Cat and the proposed holes will focus on the regional Nova and Road IP targets. Both targets have potential to discover mineralization in areas outside of the current Lorraine mineral resource estimate (MRE) (indicated resources of 12,952,000 tonnes grading 0.55 per cent copper and 0.16 gram per tonne gold and inferred resources of 45,252,000 grading 0.43 per cent Cu and 0.10 g/t Au at a 0.20-per-cent-copper cut-off grade).

Road IP target

The Road IP target is a geophysical and geochemical target 13 kilometres to the north of the Lorraine MRE and is within the same valley as the Nova target. This target comprises a coincident magnetic low with internal magnetic high, induced polarization (IP) chargeability high, and copper-molybdenum A-horizon soil and silt anomalies. The Road IP target model is that of a calc-alkaline porphyry system hosted by intrusions of the Hogem batholith, a deposit style that may exhibit geophysical and geochemical patterns that differ from targets in the Ducking Creek syenite complex, such as the Lorraine MRE. The Road IP target occupies flat, low-lying ground and is covered by an estimated (by the British Columbia Geological Survey) 15 metres of till. The target is bisected by and is accessible through the Upper Osilinka forest service road.

Nova target

The Nova target is a geophysical feature consisting of coincident magnetic and IP chargeability highs. The strongest magnetic response measures approximately 400 m by 200 m. Nova is approximately 10 km northeast of the Road IP target. A boulder of pyroxenite altered to skarn collected from a borrow pit along the road that crosses the target returned high concentrations of copper/gold/silver/platinum/palladium of 1.39 per cent Cu, 0.69 g/t Au, 6.45 g/t Ag, 0.21 g/t Pt and 1.398 g/t Pd. It is important to note that this potentially transported sample may not be representative of underlying bedrock. Thin-section analysis by Dr. John Payne in 2019 described it as massive skarn dominated by actinolite with lesser magnetite-(ilmenite) and apatite, with a few skeletal interstitial grains of hornblende, scattered patches of chalcopyrite and much less abundant bornite (altered slightly to completely to covellite), and minor biotite and chlorite.

The Nova target occupies flat, low-lying ground and is covered by till. It is bisected by the Upper Osilinka Forest Service Road, making the target easily accessible.

The Lorraine/Top Cat project

The project covers 65,000 hectares and is located in north-central British Columbia, 280 kilometres northwest of Prince George, B.C., and approximately 45 km from Northwest's Kwanika/Stardust project. The Lorraine deposit is a silica-undersaturated alkalic copper-gold porphyry deposit, which is the same classification as the Galore Creek and Mount Polley deposits. Mineralization at the Lorraine/Top Cat project is hosted mostly by early Jurassic syenite and pyroxenite intrusions that are part of the Duckling Creek syenite complex (DCSC), but additional targets such as Road IP are associated with other phases of the Jurassic Hogem batholith or with older Takla group volcanic rocks. A modern MRE was completed for portions of the Lorraine deposit in 2022, which includes indicated resources of 12,952,000 tonnes grading 0.55 per cent Cu and 0.16 g/t Au and inferred resources of 45,252,000 tonnes grading 0.43 per cent Cu and 0.10 g/t Au at a 0.20-per-cent-copper cut-off grade. As described in previous disclosures, however, gold concentration is likely understated and silver was not included in the estimation because many historical drill holes were inconsistently analyzed for the two metals. The MRE extends to surface and includes the Lower Main, Upper Main and Bishop zones and intervening rock. Copper sulphides manifest various combinations of chalcopyrite, bornite and hypogene chalcocite, and the concentration of pyrite is generally low. Gold and silver, where analyzed, are spatially related to the copper mineralization, and elevated concentrations of platinum and palladium have been reported in several published papers.

Disclosure statement

Technical aspects of this news release have been reviewed, verified and approved by Tyler Caswell, PGeo, vice-president, exploration, of Northwest, who is a qualified person as defined by National Instrument 43-101, Standards of Disclosure for Minerals Projects.

About Northwest Copper Corp.

Northwest Copper is a copper-gold explorer with a strong portfolio of projects in British Columbia. With a robust portfolio in a Tier 1 jurisdiction, Northwest Copper is well positioned to participate in a strengthening global copper market. The company is committed to responsible mineral exploration, which includes working collaboratively with first nations to ensure future development incorporates stewardship best practices and traditional land use.

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