The Day’s Play Edition 73: ASX gold expansion, defence technology and project development updates | Dateline, Astral, Nanoveu, Viridis, Archer

Dateline Resources (ASX:DTR)

Underground gold potential grows beyond pit design

Dateline extended broad gold mineralisation beyond the current resource envelope while expanding parallel REE work at Colosseum.

The Play

• Mineralisation extends several hundred metres beyond the Mineral Resource envelope

• CM25-41 returned 287.3m at 1.05g/t Au from 0m
• Including 17.7m at 6.13g/t Au from 19.2m
• CM26-42 returned 214m at 1.06g/t Au from 0m
• Third company owned rig is being recommissioned for parallel gold work

The Pitch

• Colosseum recently completed a gold Bankable Feasibility Study

• The BFS outlined a pre tax NPV5 of US$785M
• The BFS outlined a pre tax IRR of 49.5%
• Nearly 3,000m of REE drilling has been completed
• Colosseum is located 10km north of Mountain Pass

The Next Overs

• Gold drilling will test further extensions over coming months

• Initial REE assay results are expected in coming weeks
• Expanded REE program now targets 18 holes

Read full ASX Announcement here.

Astral Resources (ASX:AAR)

Deep drilling expands Theia beyond current resource limits

Astral confirmed Theia extends materially deeper than previously modelled, strengthening growth potential at its cornerstone 1.4Moz deposit.

The Play

• Theia extended 210 vertical metres below the current MRE and remains open

• Mineralisation reached 614.4 metres downhole in AMRCD263
• AMRCD263 returned 358.23m at 1.03g/t Au from 256.17m
• Higher grade zones included 15.70m at 3.40g/t Au from 320.44m
• AMRCD264 was extended from 500m to 605.3m after geological logging

The Pitch

• Theia currently hosts a 1.4Moz gold Mineral Resource Estimate

• Mandilla hosts a broader 1.74Moz gold Mineral Resource Estimate
• Mandilla holds a 1.08Moz Ore Reserve
• Mandilla PFS outlined 95koz annual production across the first 12 years
• Mandilla sits approximately 70km south of Kalgoorlie in Western Australia

The Next Overs

• Assays remain pending from AMRCD259

• AMRCD264 samples were dispatched to the lab this week
• Fourth hole of the 9 hole diamond program is underway

Read full ASX Announcement here.

Nanoveu (ASX:NVU)

Drone acquisition completes Nanoveu autonomy stack

Nanoveu is moving from edge AI silicon into full drone platform ownership targeting defence and commercial markets.

The Play

• Transaction completes ownership across silicon airframe sensing and autonomy layers

• Nanoveu entered a binding agreement to acquire 100% of Spinoff Robotics
• Acquisition adds proprietary ALICE and METRON drone platforms
• Spinoff validated both platforms with tier 1 Singapore customers
• Dr Chee How Tan will join Nanoveu’s in house drone team

The Pitch

• ECS DoT operates on 22nm and 16nm ultra low power RISC V architecture

• ALICE is a tethered drone platform built for persistent surveillance
• METRON delivers sub millimetre photogrammetry and anomaly detection
• Nanoveu targets defence airports critical infrastructure and industrial inspection markets
• Spinoff was founded in 2021 to commercialise aerial robotics technology

The Next Overs

• Live drone trials continue with a specialist US partner

• Nanoveu plans near term IP filings from trial outcomes
• Settlement is targeted by 31 August 2026 subject to approvals

Read full ASX Announcement here.

Haranga Resources (ASX:HAR)

Final drilling clears path for maiden JORC resource

Haranga has completed the final work required for Lincoln’s maiden JORC resource next week while preserving multiple near term growth catalysts.

The Play

• Final surveys and assay checks are complete for JORC conversion

• Final 3,237.2m diamond drilling program is complete at Lincoln
• Current drilling tested historical data for potential MRE inclusion
• Final assays returned up to 84.7g/t Au from XC8 drilling
• DDH0290 returned 0.4m at 84.7g/t Au from 5.5m

The Pitch

• Lincoln holds a historical foreign estimate of 958,910t at 9.29g/t Au

• The foreign estimate contains approximately 286koz Au at 4.2g/t cut off
• Lincoln includes a 315ktpa processing plant
• The project includes an 880m underground decline and 900m development drives
• Key mining permits are already in place

The Next Overs

• Maiden JORC Mineral Resource Estimate is expected next week

• Medean Exploration Target is expected next week
• Additional deep and targeted drilling is planned for July

Read full ASX Announcement here.

Viridis Mining and Minerals (ASX:VMM)

Colossus moves closer to FID and financing

Viridis completed critical drilling to lift resource confidence and support reserve conversion ahead of targeted Q3 2026 FID.

The Play

• Infill drilling was completed for the upcoming Colossus MRE update

• Drilling targeted conversion into Measured resource categories
• Results supported optimisation of planned initial mine pits
• FZ RC 1290 returned 16m at 7,434 ppm TREO
• Auger drilling confirmed continuity and ended in mineralisation

The Pitch

• Colossus holds a 493Mt resource at 2,508 ppm TREO

• Colossus holds a 200.6Mt Ore Reserve at 2,640 ppm TREO
• It remains the largest ionic adsorption clay reserve outside China
• Measured and Indicated resources consist solely of regolith ore
• Financing and offtake discussions are advancing with multiple partners

The Next Overs

• Mineral Resource estimation work has commenced

• Ore Reserve update follows the MRE update
• DFS is targeted for end June 2026

Read full ASX Announcement here.

Maronan Metals (ASX:MMA)

Shallow copper hits strengthen early mining inventory

Maronan delivered unexpected shallow high grade copper-gold intercepts while building larger Indicated resource inventory for higher throughput PFS scenarios.

The Play

• MRN25003 returned 6m at 2.51% copper and 1.77g/t gold from 238m

• MRN25002W1 returned 21.5m at 0.63% copper and 0.68g/t gold from 125m
• Silver-lead drilling confirmed continuity across Eastern and Western horizons
• Two diamond rigs are drilling to accelerate PFS resource upgrades
• Revised boxcut design reduced excavation by around 100,000 BCM

The Pitch

• Maronan hosts copper-gold and silver-lead mineralisation within the Starter Zone

• The project contains Eastern and Western silver-lead horizons
• The copper-gold zone sits between both silver-lead horizons
• Higher throughput mining scenarios are being assessed versus the PEA
• Maronan is progressing a PFS level study

The Next Overs

• Updated Mineral Resource Estimate is anticipated in H2 2026

• Infill drilling continues within Starter Zone inferred areas
• Drilling will test shallow under drilled areas near the exploration decline

Read full ASX Announcement here.

Resolution Minerals (ASX:RML)

Drilling starts as gold recoveries strengthen project economics

Resolution has started drilling at Golden Gate while initial metallurgy delivered strong gold recoveries from oxide and sulphide samples.

The Play

• Oxide gold returned 94.2% to 95.5% recovery in initial leach tests

• Sulphide gold returned up to 88.7% recovery in flotation tests
• First drill rig commenced and is drilling the first hole
• 2026 drilling targets up to 13,700 metres across 45 holes
• Drilling will test tungsten extensions and a 500m by 600m anomaly

The Pitch

• Golden Gate sits within the Horse Heaven Antimony Tungsten Gold Silver Project

• The project is located beside Perpetua’s permitted Stibnite Gold Project
• HH GG25 001C returned 189.2m at 1.30g/t Au and ended in mineralisation
• HH GG25 002C returned 265.2m at 0.60g/t Au from surface
• HH GG25 003C returned 253.0m at 1.50g/t Au from surface

The Next Overs

• Drilling continues at Golden Gate North and South

• Reagent optimisation work is underway
• Rougher regrind cleaner test work will follow

Read full ASX Announcement here.

Far East Gold (ASX:FEG)

Scoping study advances as development drilling begins

Far East Gold has shifted Idenburg from resource growth into development planning, with study work and drilling now aligned toward a potential feasibility pathway.

The Play

• Idenburg Scoping Study is well advanced assessing development options

• Sua drilling will support mine planning and economic modelling
• Drilling targets resource expansion and confidence upgrades
• Mining One is completing the Idenburg Scoping Study
• FEG is assessing staged development concepts and early development scenarios

The Pitch

• Idenburg hosts a JORC resource of 780,000oz at 3.1g/t Au

• The current resource comes from only 4 of 15 historical prospects
• The resource is currently classified as Inferred
• The project covers 95,280ha in Papua Province, Indonesia
• Idenburg has direct access via the Trans Papuan Highway

The Next Overs

• Sua drilling is scheduled to commence shortly

• Study work will assess capital and operating costs
• FEG is targeting a potential Indonesian Feasibility Study in late 2026

Read full ASX Announcement here.

Archer Materials (ASX:AXE)

Archer advances biosensor toward clinical validation

Archer has moved from proving potassium sensing accuracy to building a manufacturable device designed for validation and future clinical trials.

The Play

• Archer is building a beta prototype for preclinical validation

• Alpha prototype achieved clinical grade potassium sensing accuracy
• First beta cartridge design was released for manufacturing revisions
• Handheld electronics advanced toward manufacturing release
• Archer engaged manufacturing partners for future scale up

The Pitch

• Archer’s Biosensor uses its Biochip platform for blood potassium sensing

• The alpha prototype integrated Biochip microfluidics and readout electronics
• Archer is working with IMEC on future beta generations
• The platform may support broader diagnostic applications
• Early lithium blood monitoring testing is underway

The Next Overs

• First beta prototype testing begins in coming months

• Optimisation and validation continue through H2 2026
• Archer is targeting a fully optimised beta prototype for trials in 2027

Read full ASX Announcement here.

Australian Oil Company (ASX:AOK)

First Emu Apple lifting shifts production into sales

Australian Oil converted Emu Apple production into first crude sales while advancing parallel optimisation, development and exploration work across the Surat Basin.

The Play

• Maiden oil lifting sold 422 barrels from Emu Apple under the IOR agreement

• First lifting averaged $151 AUD per barrel, producing a $63,722 receipt
• Emu Apple production remains at approximately 15 barrels per day
• Riverslea 3 oil sampling advanced crude sales agreement discussions
• PL 30 seismic interpretation identified additional exploration potential

The Pitch

• Australian Oil holds Surat Basin assets across PL 264, PL 30 and PL 512

• Emu Apple operates under an existing crude oil and condensate lifting agreement with IOR
• Riverslea and Yapunyah remain existing oil development opportunities within PL 30
• Major Gas Field includes the shut in Major 4 production well
• Australian Oil also holds producing oil and gas assets in California

The Next Overs

• Maiden oil sale funds are anticipated to be received within May

• Next lifting is scheduled on or before 18 May
• Riverslea 3 assays are expected by month end

Read full ASX Announcement here.