White Cliff Minerals (ASX:WCN) extends copper mineralisation at Danvers to depth and along strike through latest drilling

White Cliff Minerals Managing Director Troy Whittaker addresses the latest deep drilling results from the Danvers Copper Deposit within the Rae Copper Project in Nunavut, where recent reverse circulation drilling has confirmed significant vertical and lateral extensions to copper and silver mineralisation beyond the limits of the historic resource footprint, reinforcing the scale, continuity and structural integrity of the fault hosted breccia system along the

Teshierpi Fault Zone and providing a materially expanded geological framework for ongoing resource definition and regional exploration.

What do the recent deep drilling results indicate regarding the vertical continuity and scale of copper mineralisation at the Danvers Deposit?

The latest reverse circulation drilling has demonstrated that copper mineralisation at Danvers extends materially beyond the depth limits defined by historical drilling and the existing non JORC compliant resource envelope, with drillhole DAN25020 intersecting continuous mineralisation from near surface through to approximately 200m downhole and confirming copper to at least 188m where the system remains open.

Drillhole DAN25021 intersected a further mineralised zone approximately 60m below the deepest previously known intercepts, thereby establishing a substantial increase in the known vertical extent of the breccia system.

“Copper mineralisation is now confirmed from surface to depths approaching 200m, with continuity demonstrated well below the historic drilling and the system remaining open at depth.”

Key intersections include 64m at 0.89% Cu from 128.02m in DAN25020, which incorporates higher grade intervals such as 6.10m at 1.45% Cu and 7.6g/t Ag from 150.88m and 9.144m at 2.65% Cu and 11.8g/t Ag from 178.31m, while DAN25021 returned 16.76m at 1.28% Cu from 185.93m, confirming that economically meaningful copper grades persist well below the previously tested envelope and that the mineralised breccia system has a much greater vertical dimension than was previously established.

How do the new intercepts compare with the historic resource and previously reported mineralisation in terms of grade and thickness?

The historic estimate of 4.16Mt at 2.96% Cu covers only approximately 375m of the currently drill confirmed strike length and is confined to shallower portions of the breccia system, whereas recent drilling by White Cliff has now extended confirmed mineralisation to around 950m of strike and to significantly greater depths, with both moderate and higher grade domains developed within the same structural corridor.

“The drill defined mineralised strike has now expanded to approximately 950m, materially exceeding the portion represented by the historic resource and demonstrating substantial growth potential beyond the original footprint.”

The new results include broad mineralised intervals such as 64m at 0.89% Cu in DAN25020 and 32m at 0.27% Cu from 94.49m in DAN25021, together with higher grade cores exceeding 1% Cu over multi metre widths, which complement previously reported results from the 2025 program such as 90m at 4% Cu from surface in DAN25004 and 38m at 1% Cu, collectively demonstrating that the breccia system hosts both thick, laterally continuous zones and discrete high grade centres that extend well beyond the volume represented in the historic estimate.

What is the geological significance of the mineralisation style and structural setting at Danvers in the context of future resource growth?

Danvers is a copper silver deposit developed within a fault hosted breccia system along a branch of the regional Teshierpi Fault Zone, where structural dilation and brecciation have created the permeability necessary for mineralising fluids to precipitate copper and silver, resulting in vertically extensive and laterally continuous mineralised bodies.

The breccia bodies dip moderately and display vertical continuity over at least 200m, with mineralisation occurring both within the core of the breccia and along its margins, and White Cliff controls more than 10km of strike length of this favourable structural corridor.

“The fault controlled breccia architecture along the Teshierpi Fault Zone has now been shown to host vertically extensive copper mineralisation and remains largely untested over more than 10km of strike.”

The discovery of Danvers II approximately 4.3km along the same structural trend, where drilling returned 15m at 4.8% Cu and 20g/t Ag from 12m, together with supporting geophysical and geochemical evidence, confirms that this structural setting is capable of hosting multiple copper rich centres of similar style and scale.

What do the near surface intersections and geophysical correlations imply for potential resource expansion beyond the historic footprint?

Drillhole DAN25020 intersected several previously untested shallow mineralised zones, including 9.14m at 0.29% Cu from 13.72m, 4.57m at 0.18% Cu from 51.82m and 4.57m at 0.27% Cu from 70.10m, which are spatially associated with an adjacent geophysical anomaly and are interpreted to represent the upper expression of a separate breccia body that has not yet been drilled down dip and lies outside the historic resource footprint.

These shallow results, when combined with the 2025 HeliTEM survey that identified Danvers I as a magnetic low with associated IP and EM conductivity and highlighted several larger targets of similar geophysical character along the Teshierpi Fault Zone, support the presence of additional breccia systems beyond the currently defined mineralised envelope.

“Shallow copper intersections coincident with strong geophysical anomalies indicate the presence of additional breccia bodies outside the historic footprint, highlighting clear potential for lateral resource growth.”

How do the recent results integrate with the broader exploration strategy across the Rae Copper Project and the Teshierpi Fault Zone?

The confirmation of continuous copper mineralisation from surface to depths approaching 200m at Danvers I, together with the extension of mineralisation along strike and the identification of additional breccia bodies associated with strong conductive and magnetic geophysical responses, aligns with the Company’s strategy of expanding the existing deposit while systematically testing for further high grade centres along the regional structural corridor.

Drill confirmed mineralisation now extends over approximately 950m of strike, while the Teshierpi Fault Zone remains prospective over more than 10km, supported by rock sampling north of the fault returning values of up to 37.4% Cu and 72.9g/t Ag from replaced flow top breccias and by the discovery of Danvers II.

“The combination of depth continuity, strike expansion and multiple geophysically defined targets along the Teshierpi Fault Zone provides a technically supported pipeline for ongoing resource growth across the Rae Copper Project.”

In combination with the conductive and chargeable targets defined by the 2025 geophysical surveys, the recent deep drilling results establish a robust, data driven basis for continued step out and depth drilling aimed at expanding the scale of copper and silver mineralisation across the project area.

From breccia core to district-scale growth corridor

The confirmation of vertical continuity to depths approaching 200m, the extension of drill defined strike to approximately 950m, and the identification of additional breccia bodies both at Danvers and along the broader Teshierpi Fault Zone collectively establish a mineralised system that is materially larger than that represented by the historic estimate and remains open in multiple directions.

With Danvers I demonstrating consistent grade continuity at depth, Danvers II confirming the presence of additional high grade centres along the same structural trend, and regional geophysical surveys defining a suite of larger conductive targets with comparable signatures, White Cliff Minerals is positioned with a growing inventory of technically supported drill targets that underpin the continued systematic expansion of copper and silver mineralisation across the Rae Copper Project.

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