White Cliff Minerals (ASX:WCN) Digitisation Expands Copper Scale at Rae Project

White Cliff Minerals has delivered an important milestone in the development of its Canadian copper portfolio, completing the digitisation and validation of historic data at the Danvers 1 prospect within the Rae Copper Project in Nunavut.

The updated geological model reveals a major increase in both the scale and confidence of mineralisation, positioning Danvers as a potential flagship growth asset in North America’s copper sector.

Highlights

• Digitisation and 3D modelling have doubled the mineralised strike at Danvers 1 to more than 950 metres and confirmed copper continuity beyond 400 metres depth.

• New data reveals thicker and higher-grade copper zones than previously modelled, even at a 2% Cu cut-off.

• Drilling returned 175.2 metres at 2.5% Cu from 7.6 metres (DAN25008) and 90 metres at 4% Cu from surface (DAN25005).

• Airborne magnetics suggest potential for a 4 kilometre mineralised corridor linking Danvers 1 and Danvers 2.

• A maiden JORC resource is targeted for 2026 following the next drill campaign along the 10 kilometre Teshierpi Fault Zone.

Digitisation Reveals Depth and Continuity

Perth-based Terra Resources assisted White Cliff in digitising and integrating data from multiple drilling generations, including programs conducted in the 1960s by Coppermine River, the 2000s by Coronation Minerals, and the 2025 campaign by White Cliff itself.

The process combined historic and modern datasets into a unified 3D model, validating collar positions and improving spatial accuracy.

The updated geological model confirms a mineralised strike length exceeding 950 metres, an increase of approximately 153 per cent from the previous estimate, and establishes copper sulphide mineralisation beyond 400 metres depth.

Several recent holes recorded grades and thicknesses surpassing historic expectations, highlighting the system’s quality.

At Danvers 1, results from hole DAN25005 returned 90 metres at 4% copper from surface, while DAN25008 intersected 175.2 metres at 2.5% copper from 7.6 metres depth.

In addition, hole DAN25010, drilled northeast of the previous boundary, recorded 33.5 metres at 1.02% copper from 7.6 metres, while historic drilling by Coronation Minerals supports mineralisation continuity at depth with intercepts including 20.5 metres at 1.2% copper from 356.9 metres and 9 metres at 1.7% copper from 461 metres.

The Danvers Project was acquired in November 2024 and contained a non-JORC compliant historic estimate of 4.16 million tonnes at 2.96% copper.

White Cliff Minerals’ digitisation work and subsequent modelling have expanded this framework significantly, confirming both strike and depth extensions that enhance the project’s scale and exploration potential.

A recent airborne magnetic survey suggests the presence of a four kilometre mineralised structure connecting Danvers 1 and Danvers 2, where drilling has already returned 15 metres at 4.8% copper from 12 metres depth.

The Teshierpi Fault Zone, which extends over ten kilometres, now represents a major structural corridor for further copper discoveries.

The Rae Copper Project hosts a further 12 mineralised zones that have each returned high-grade copper from recent fieldwork, providing a broader platform for growth within a region recognised as one of Canada’s most prospective areas for sediment-hosted copper systems.

As Managing Director Troy Whittaker stated,

“Results from our maiden drilling campaign at Danvers have exceeded expectations and represent a pivotal step forward in redefining the scale and quality potential of this asset.”

The completion of the digitisation program provides a robust foundation for the next phase of drilling, which will target extensions along the Teshierpi Fault Zone and refine high-priority targets for resource definition.

The work undertaken has not only expanded the mineralised footprint but has also improved geological confidence and modelling accuracy.

White Cliff’s progress at Rae highlights the strategic importance of data integration in revitalising historic assets.

As global demand for copper continues to grow, particularly in jurisdictions with strong regulatory frameworks, the company’s methodical approach to reinterpreting the Danvers system positions it well for long-term value creation through a maiden JORC resource expected in 2026.