Great Boulder Resources (ASX: GBR) has delivered ‘high-grade’ first assay results from Phase 5 AC drilling at the Mulga Bill prospect within its Side Well Gold Project in Western Australia.
Hole 21MBAC119 intersected 3m @ 8.56g/t Au from 147m, including 1m @ 23.78g/t Au to end of hole.
This hole, 1km along strike and to the south of the Mulga Bill – Loaded Dog corridor, extends the overall strike footprint at Mulga Bill to 6 km.
Addressing the results, Great Boulder Resources Managing Director Andrew Paterson said: “This is an amazing air-core intersection which really demonstrates that Mulga Bill is a major project. With a footprint now 6km long we’re still drilling further south in our current program.
“This is an amazing air-core intersection which really demonstrates that Mulga Bill is a major project”
Mulga Bill is a massive mineralised system. This is 5km from the zone where we first started intersecting ounce-grade gold veins, and the high grades are still there.
2022 is going to be a huge year for Great Boulder as we continue to accelerate our drilling programs. The AC rig is heading to Jones Well at the northern end of Side Well shortly, and the diamond rig is due to arrive next week.”
The 65-hole Phase 5 AC program was drilled late last year and was tasked with testing both the northern extensions to the western zone of mineralisation at Mulga Bill, as well as other regional mineralised trends.
Hole 21MBAC119 was drilled to 150m, at which point the rig ran out of rods. The company believes that this indicates that high-grade mineralisation remains open at depth, as well as along strike to the south.

Great Boulder’s flagship Side Well Gold Project is situated northeast of Meekatharra in Western Australia’s Murchison province, with neighbours including Westgold’s (ASX:WGX) Meekatharra operation immediately to the west, and Meeka Gold’s (ASX:MEK) Andy Well Mine to the north.
Looking forward, assays from 33 RC holes and 57 AC holes are expected in the coming weeks. The company’s regional AC drilling program at Side Well is currently ongoing and diamond drilling at Mulga Bill is scheduled to commence imminently. The AC rig will soon move to the Jones Well prospect at the northern end of the project.
Images: Great Boulder Resources


