GreenTech Metals is gearing up for a substantial 8,300-metre drilling campaign across its Munni Munni and Whundo projects, backed by government co-funded geophysics and advancing metallurgical work to sharpen copper recovery.
- 8,300m drilling program combining RC and diamond rigs
- Government co-funded FLEM survey targets untested basal contact
- Heritage survey to unlock new drill sites mid-August
- Metallurgical testwork prioritises copper recovery for resource update
- Focus on high-grade copper-gold extensions at Whundo
Drill rigs set for late July mobilisation
GreenTech Metals Limited (ASX:GRE) is advancing its exploration push in Western Australia's West Pilbara with plans to mobilise drill rigs by late July 2026. The company has contracted a rig to commence an 8,300-metre drilling program spanning its Munni Munni PGE-Cu-Ni and Whundo Cu-Zn-Au projects. A second rig is expected to join once heritage clearance is secured over additional areas, enabling expanded drilling activity.
Government-backed geophysical survey to refine targets
Prior to drilling, GreenTech will deploy a Fixed-Loop Electromagnetic (FLEM) survey co-funded by the Western Australian Government. Scheduled to start in early July, this 8.2km², 56.4 line-kilometre survey aims to illuminate conductive sulfide bodies along the largely untested basal contact of the Munni Munni intrusion. The FLEM method’s effectiveness was demonstrated nearby at the Andover Complex, where it led to a significant Ni-Cu discovery. GreenTech expects the survey to fine-tune basal contact drill targets ahead of rig arrival.
Phased drilling approach with heritage survey in August
Drilling will initially focus on existing cleared pads at Munni Munni, allowing early activity before an 8-day heritage survey scheduled for 10 August. This survey is critical to opening new drill locations and access routes across the mineralised footprint and high-priority basal zone targets. The phased approach aims to maximise rig utilisation by enabling continuous drilling at Whundo and Munni Munni without downtime waiting for heritage clearances.
Metallurgical work targets copper value maximisation
Alongside exploration, GreenTech is intensifying metallurgical testwork on composite drill core samples from the Munni Munni Ferguson Reef. The program focuses on optimising flotation parameters to produce a copper-PGE concentrate, shifting from historical emphasis on high-grade PGE concentrates with unoptimised copper recovery. This pivot reflects copper’s growing role as a value driver, supported by strong pricing and offtaker interest. Results are due in August and will feed into a resource re-estimation and an initial scoping study.
Targeting high-grade copper-gold extensions at Whundo
At Whundo, follow-up drilling will prioritise shallow extensions of known high-grade copper-gold mineralisation, with wider-diameter diamond holes planned to collect metallurgical samples. This work supports recovery testwork for gold and silver ahead of a resource update. The program’s design reflects GreenTech’s strategy to unlock value across two complementary deposits within a consolidated >500km² landholding in the West Pilbara.
Bottom Line?
GreenTech’s methodical drill and survey program, combined with focused metallurgical work, positions it to sharpen resource estimates and advance project development in a copper-favourable market.
Questions in the middle?
- Will the FLEM survey reveal new basal contact conductors that materially shift drill targeting?
- How will metallurgical test results influence the economics of a copper-PGE concentrate at Munni Munni?
- What impact will heritage survey timing have on the pace and scope of drilling expansion?