NorthWest Copper Corp. reported positive metallurgical results have been achieved from the first modern metallurgical work completed on samples from the Lorraine copper-gold-silver deposit, located in north-central British Columbia. Highlights of the test work include: High batch cleaner flotation recoveries of up to 94%, 71% and 92% for copper (Cu), gold (Au) and silver (Ag), respectively.

High metal recoveries at a relatively coarse primary grind size of 80% passing 150 microns. Production of Cu concentrates with 31 to 54% Cu that contain 7.4 to 25.4 g/t Au and 152 to 405 g/t Ag, and also up to 1.64 g/t palladium (Pd) and anomalous platinum (Pt). Low concentrations of potentially deleterious trace elements in the Cu concentrate.

Composite Samples The metallurgical program tested five composite samples that ranged from 19.6 kg to 37.4 kg in size, and included one from the Bishop Zone (BZC) and four from the Lower Main Zone. Two composites were created from half-split historical drill core, which was deemed suitable for scoping test work because it was intact, had been well stored, and had very low pyrite concentration that minimized surface oxidation of sulphide minerals. The remaining three samples are from the Lower Main Zone and comprised assay coarse reject material from drill holes completed by Northwest in 2022.

These crushed materials have a large surface area compared to intact core, and to prevent surface oxidation of the sulphide minerals these three samples were placed in frozen storage immediately after routine geochemical analyses. The samples contain disseminated copper mineralization hosted by pyroxenite and syenite, which are the predominant material types in the Lorraine deposit. The samples were selected to be reasonable geological and geochemical representations of the main styles of mineralization at Lorraine, as currently understood, and therefore are interpreted to be reasonable for use in the scoping metallurgical test work reported here.

Copper concentrations in the five composites range from approximately average (0.61 % Cu) to higher grade (1.21% Cu), in comparison to the average grade of 0.55% Cu in the indicated mineral resources estimate at the Lorraine deposit. Summary of Recovery Tests Two sets of five-stage rougher flotation tests compared results from typical porphyry (75 µm) and coarse (150 µm) primary K80 grind sizes. Copper recoveries of 94-98% were achieved at the finer grind, whereas the coarse grind recovered 90-99% Cu.

Overall recoveries at the two grind sizes ranged from 66-90% for Au, and from 86-97% for Ag. The results support potential to beneficiate Lorraine mineralization at a relatively coarse, possibly energy-saving grind size without a large impact on metal recovery, and this opportunity can be assessed by future grind size versus metal recovery trade off studies. A gravity test on 150 µm grind size material recovered 4-24% of gold to a gravity concentrate, and when the gravity tails were treated by rougher flotation there was a modest improvement in overall gold recovery, providing an additional possible avenue to further improve performance.

Cleaner flotation tests go an important step beyond rougher tests and more closely simulate concentrate production potential. Cleaner tests were completed on material ground to 150 µm for initial rougher flotation, followed by a regrind targeting a 25 µm size before progressing through three-stage open circuit cleaner flotation. The samples performed extremely well.

The Bishop Zone composite had Cu, Au and Ag recoveries of 94%, 71% and 92%, respectively, to a concentrate with 54% Cu, 7.4 g/t Au, and 405 g/t Ag. Samples from the Lower Main Zone had recoveries of 83-89% Cu, 57-70% Au, and 74-83% Ag to concentrates with 31-49% Cu, 11-25 g/t Au, and 152-360 g/t Ag. The high Cu concentrations in the concentrate (up to 54% Cu) reflect the hypogene (unweathered) copper sulphide mineralogy of the mineralization, which in addition to chalcopyrite (34 wt % Cu) also includes bornite (63 wt % Cu) and chalcocite (80 wt % Cu).

Intriguingly, two samples also returned 1.41 and 1.64 g/t Pd accompanied by significantly anomalous Pt. Analyses of the five copper concentrates produced by the cleaner flotation tests demonstrate that Lorraine can produce high quality concentrates with all trace elements below likely penalty threshold concentrations. Comminution Tests Bond Ball Mill work indices were measured on each of the five composites to assess grindability.

Results range from 15.0 kWh/t (average hardness) to 20.3 kWh/t (very hard) and are in line with expectations that were based on core competency and rock mineralogy and texture. Lorraine The Lorraine deposit is part of the Lorraine Project. The Lorraine Project covers 56,000 hectares and is located in north-central British Columbia, 280 km northwest of Prince George, BC and approximately 40 km from NorthWest?s Kwanika-Stardust Project.

The Lorraine deposit is located near the centre of the Project tenure and is a silica-undersaturated alkalic copper-gold porphyry deposit, which is the same classification as the Galore Creek and Mount Polley deposits.3 Mineralization at the Lorraine deposit is hosted mostly by Early Jurassic syenite and pyroxenite intrusions that are part of the Duckling Creek Syenite Complex (?DCSC?). A modern, compliant mineral resource estimate (MRE) was completed in 2022 that includes indicated resources of 12.952 Mt grading 0.55% Cu and 0.16 g/t Au, and inferred resources of 45.252 Mt grading 0.43% Cu and 0.10 g/t Au.4 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 promoted concentrations of platinum and palladium have been reported in several published papers.