RE: Pinnacles hit RNS Aus11 May 2026 01:20
Exploration Update – West Dome Underground
Step-out drilling hits 58.7m @ 6.5g/t gold & 0.1% copper at Pinnacles prospect 1.2km south of the West Dome Underground resource, indicates extension of geological structure and stratigraphy
Highlights
1,858m exploration diamond drill hole (WRC14503A) recently drilled from surface at the Pinnacles prospect, to test potential extension of the geological structures and stratigraphy that host the West Dome Underground (WDU) deposit, approximately 1.2km to the south of the current WDU Mineral Resource Estimate (MRE).
The Pinnacles drill hole intersected high grade mineralisation and indicates a significant extension of the West Dome geological structure. Assay results include the following significant intercepts:
58.7m @ 6.5g/t Au & 0.1% Cu from 1,754m (approximately true width), including:
37.0m @ 9.98g/t Au & 0.14% Cu from 1,754m (approximately true width); and
34.1m @ 1.1g/t Au from 1,820m.
The mineralisation is open to the north towards the WDU, and to the south, which is entirely untested. Further drilling is required to confirm the tenor and extent of the mineralisation between the WDU and the Pinnacles intersection, as well as to the south.
This new intercept is situated approximately 1.5km from the existing Telfer underground crusher and hoist infrastructure.
Follow-up work to be completed includes:
Wedge holes from drill hole WRC14503A, to test mineralisation between 50-100m along strike and down dip.
Planning for drilling between Pinnacles and WDU, and extension drilling further south of Pinnacles.
Greatland Managing Director, Shaun Day, commented:
“It is a credit to our Exploration team to have first interpreted the potential extension of the West Dome Underground at Pinnacles, a significant distance from our current area of focus, and then to successfully plan and execute this drill hole from surface to its target at depth.
“The wide high-grade mineralisation, including 58.7m @ 6.5g/t gold & 0.1% copper (381.6 grammetres gold), is among the best intercepts achieved from West Dome Underground drilling to date.
“While the result is a single drill hole, it demonstrates the potential extension of West Dome Underground mineralisation to the south of our current resource. This new intercept is in similar proximity to our existing underground crusher and hoist infrastructure as the current West Dome Underground resource, further adding to its prospectivity.
“Further drilling will now be planned to test the existence and tenor of mineralisation between the two zones.”