Rae Copper Silver Project

Nunavut, Canada

A high grade copper discovery with regional scale sedimentary upside, located near port infrastructure in northern Canada.

  • Location: Nunavut, Canada

  • Project Area: ~2,000 km²

  • Distance to Port: ~75 km to Kugluktuk

  • Commodities: Copper, Silver

The Rae Copper Silver Project is White Cliff Minerals’ flagship Canadian asset, located on mainland Nunavut approximately 75 km from the town and deep water port of Kugluktuk. The project covers an area of approximately 2,000 km² and is situated within a highly prospective copper district that hosts multiple known copper occurrences and discoveries.

Rae combines near surface high grade copper mineralisation with district scale sedimentary hosted copper potential. This unique combination underpins White Cliff’s strategy to pursue near term development opportunities while systematically advancing larger scale exploration targets capable of supporting a material copper project.

Danvers Copper Silver Discovery

Danvers represents the most advanced discovery within the Rae Project and provides a clear pathway toward a maiden resource. The deposit hosts a historic resource of 4.16 Mt at 2.96% copper and has been materially expanded through recent drilling programs.

Drilling has confirmed broad zones of copper and silver mineralisation extending from surface, with mineralisation remaining open along strike and at depth. Recent results have demonstrated continuity well beyond historic drilling limits, highlighting significant upside potential.

Map of early time EM channels X component, RGB of 3 channels converted to single band pseudo-colour. Red areas represent peak conductivity highlighted by thicker black lines within a halo of conductivity, thinner dashed lines

Key Highlights:

  • High grade copper and silver mineralisation from surface

  • Demonstrated upside to historic resource

  • Mineralisation open along strike and at depth

  • Proximity to port infrastructure supports development optionality

Danvers – 2025 Drilling Results

The 2025 drilling campaign has significantly expanded the mineralised footprint at Danvers. Drilling has extended copper mineralisation laterally and vertically, with multiple holes ending in mineralisation.

Selected highlights include long, high grade copper and silver intercepts from surface, confirming the potential for a shallow, high grade operation. The discovery of a second copper system adjacent to Danvers further supports geophysical interpretations of parallel mineralised trends across the project area.

Chalcocite veining in RC drill chips from DAN25008

Reverse circulation drilling at the Danvers project site

  • Recent results from White Cliff’s 2025 RC campaign at Danvers have affirmed the potential for a material copper discovery

  • Highlights include:

    • DAN25008: 175m @ 2.5% Cu & 8.66g/t silver (Ag) from 7.6m, including 14m @ 7.55% Cu & 25.8g/t Ag, with the last 1.5m sample recording 4.46% Cu & 11.58g/t Ag, open at depth
    • DAN2005: 90m @ 4% Cu from surface, including 18m @ 6.5% Cu & 11.4g/t Ag from 26m; and 1.52m @ 19.45% Cu and 34.1g/t Ag from 30m; and a 14m @ 7.7% Cu and 16.2g/t Ag from 61m

  • Summer drilling campaign has now doubled the mineralized(1) strike with further results to come

  • Drilling extends mineralisation laterally outside of, and below historic drilling limits

  • Discovery of Danvers 2 – 15m @ 4.8% Cu and 20g/t Ag within broader zone of 30.5m @ 2.5% Cu & 10.3g/t Ag from 7.5m including in DAN25019.

  • Second Cu System aligns with interpretation of aerial geophysics – high grade intercepts at Danvers now span >4km

Dual Pronged Growth Strategy

DANVERS GROWTH PATH

Danvers is being advanced as a near term development opportunity. Ongoing drilling continues to grow the high grade resource base while preliminary economic and metallurgical studies assess the potential for a low capital development pathway, including direct shipping ore options.

SEDIMENTARY HOSTED COPPER UPSIDE

Beyond Danvers, Rae hosts extensive Proterozoic aged sedimentary basins known globally for hosting large scale copper deposits. Initial drilling has confirmed copper mineralisation associated with key redox boundaries, validating the geological model and providing strong vectors for follow up drilling.

Chalcopyrite-bornite-quartz-carbonate veining below the base of the sedimentary structure in STK25001 at 291.4m that returned assays of 14.95% Cu & 0.51g/t Au. Core diameter is NQ2

Sedimentary Copper Targets

Initial drilling at sedimentary targets has intersected broad zones of copper mineralisation across multiple holes. Mineralisation has been confirmed both above and below the targeted redox boundary, an important control for sedimentary hosted copper systems.

Large areas adjacent to initial drill holes remain untested and represent immediate follow up targets with potential to define a materially larger copper system.

Regional Targets – Hulk and Stark

Hulk – Multiple district Scale conductive anomalies

The Hulk target comprises multiple district scale conductive anomalies interpreted to represent favourable sedimentary copper horizons extending across more than 20 km of strike. These targets sit within fault controlled sub basins and remain largely untested by drilling.

Stark – A target in its own right? And … IS IT feeding Hulk
Map of the Herb Dixon Fault Zone target named STARK. >14 km of N/S strike of anomalous conductivity with a zone of 7 km showing high conductivity.

The Stark target lies along the Herb Dixon Fault, a major regional structure extending more than 25 km across the Rae Project. Strong conductive signatures coincident with this structure and exceptionally high grade surface copper occurrences suggest the potential for a significant mineral system.

Access and Infrastructure

Rae is well located from an infrastructure perspective. The project lies approximately 75 km from the town and deep water port of Kugluktuk, providing access for bulk materials during the open water season.

The project area is serviced by an all weather airstrip enabling year round access. Operational and logistical support is provided from Yellowknife, an established mining hub located approximately 90 minutes away by flight.

Development pathway and next steps

TIMELINE:

  • Q1 2026: Pending sedimentary copper assay results

  • Early 2026: Follow up drilling targeting major geophysical anomalies

  • 2026: Definition of an exploration target

Dash 7 aircraft on the Company’s all weather air strip

Town and Port of Kugluktuk, only 75km from the Rae Copper-Silver Project

Industrial town of Yellowknife only 90 minutes by flight

Industrial town of Yellowknife only 90 minutes by flight