Great Boulder Resources Ltd · ASX:GBR
Great Boulder Resources — Investor Presentation (April 2025)
20 slides from Great Boulder Resources's investor presentation, Apr 10, 2025
Slide 1: Defining a New Multi-Million Ounce Gold Hub in Western Australia
For personal use only DEFINING A NEW MULTI-MILLION OUNCE GOLD HUB IN WESTERN AUSTRALIA SIDE WELL GOLD PROJECT April 2025 | ASX:GBR GREATBOULDER.COM.AU
Slide 2: Meekatharra Gold Hub
ASX:GBR MEEKATHARRA GOLD HUB Defining a new multi-million-ounce gold camp ▪ Targeting 1.5Moz at Side Well (current MRE 668koz @ For personal use only 2.8g/t Au) ▪ In the centre of existing infrastructure - <25km from Westgold’s Bluebird mill (1.8Mtpa) ▪ Unlocking a large-scale hydrothermal gold syst
Slide 3: Corporate Overview
ASX:GBR CORPORATE OVERVIEW A well-funded explorer guided by 140 years of exploration experience CAPITAL STRUCTURE BOARD & MANAGEMENT For personal use only 759M ~$53M SHARES ON ISSUE MARKET CAP ASX: GBR At $0.07/sh ~$5.3M Nil CASH DEBT As at 31/12/24 Collins St Asset Management & Related Parties (9.2
Slide 4: Side Well: A large-scale intrusive-related gold system
ASX:GBR SIDE WELL A large-scale intrusive-related gold system ▪ Two main target areas: For personal use only – the Central Corridor: a large, high-grade intrusive-related gold system; and – the +22km Eastern Corridor is the stratigraphic equivalent of the Paddy’s Flat group of mines ▪ A strong growt
Slide 5: Central Corridor: Bonanza gold grades at Mulga Bill
ASX:GBR CENTRAL CORRIDOR Bonanza gold grades at Mulga Bill ▪ MRE 568,000oz @ 2.7g/t Au* For personal use only ▪ Drilling has returned consistent high-grade results: – 6m @ 589.44/t Au from 114m – 14m @ 36.12g/t Au from 91m – 15m @ 35.82g/t Au from 88m – 8m @ 54.60g/t Au from 120m ▪ Resource occupies
Slide 6: Central Corridor: Mulga Bill
ASX:GBR CENTRAL CORRIDOR: MULGA BILL Significant growth potential ▪ Mulga Bill is part of a very large mineralised system For personal use only ▪ Open at depth; high grade structures plunging north ▪ Overall strike >2.5km defined by drilling GREATBOULDER.COM.AU 6
Slide 7: Central Corridor: Eaglehawk
ASX:GBR CENTRAL CORRIDOR: EAGLEHAWK Bigger than Mulga Bill? ▪ Recent drilling has intersected similar high-grade structures For personal use only as seen at Mulga Bill ▪ The dacite unit is the key host to gold mineralisation ▪ This is a key target for drilling in 2025 With a combined strike length o
Slide 8: Eastern Corridor: Ironbark
ASX:GBR EASTERN CORRIDOR: IRONBARK Near surface, high-grade mineralisation ▪ MRE: 100,000oz @ 3.3g/t Au For personal use only ▪ Scoping study underway ▪ Ore from surface ▪ Simple, tabular geometry ▪ Broad zones of shallow gold mineralisation over a 500m strike – 5m @ 51.65g/t Au from 106m – 21m @ 3.
Slide 9: Eastern Corridor: Saltbush
ASX:GBR EASTERN CORRIDOR: SALTBUSH Saltbush discovery – an Ironbark analogue For personal use only ▪ Same geology & alteration as Ironbark within a +2km Au-As anomaly ▪ First drill program: high-grade hits at Saltbush – 10m @ 6.47g/t Au from 117m, incl. 3m @ 18.59g/t Au – 12m @ 2.16g/t Au from 69m i
Slide 10: Eastern Corridor Growth Targets
ASX:GBR EASTERN CORRIDOR Growth Targets ▪ How many more Ironbarks remain undiscovered within For personal use only this +22km mineralised corridor? ▪ Auger sampling defined multiple priority targets for drill testing which commenced in 2024 ▪ Several areas defined with a larger and stronger geochemi
Slide 11: Ironbark Corridor: Side Well South
ASX:GBR IRONBARK CORRIDOR Side Well South For personal use only ▪ Two large, high-tenor geochemical anomalies are currently being drilled ▪ Several new zones of gold mineralisation identified ▪ Follow-up heritage surveys completed ▪ Follow-up drilling planned shortly ▪ New geochemical targets contin
Slide 12: Ironbark Corridor: Southern end Tal Val
ASX:GBR IRONBARK CORRIDOR Southern end: Tal Val For personal use only ▪ Recent auger sampling to the southern end of the project demonstrates continuity of mineralization ▪ Multiple new gold targets up to 1.8km long ▪ Heritage work and drill planning in progress GREATBOULDER.COM.AU 12
Slide 13: Side Well Mineral Resource Estimate Updated
ASX:GBR SIDE WELL Mineral Resource Estimate Updated – November 2023 Mineral Resource Estimate incorporating all drilling to Sept 2023 For personal use only INDICATED INFERRED TOTAL Tonnes Au Tonnes Au Tonnes Au Deposit Ounces Ounces Ounces (kt) (g/t) (kt) (g/t) (kt) (g/t) Mulga Bill 2,399 3.3 252,00
Slide 14: Side Well: Excellent metallurgical recoveries
ASX:GBR SIDE WELL Excellent metallurgical recoveries For personal use only ▪ Testing on the full range of Mulga Bill ore types in MET-4 Grind Optimisation Tests January 2025 confirmed excellent recoveries from 100% gravity + cyanide leach Overall Gold Extraction (%) 90% ▪ High overall recoveries up
Slide 15: Developing a high-grade stand-alone mining opportunity in the Murchison
ASX:GBR SIDE WELL Developing a high-grade stand-alone mining opportunity in the Murchison Pathway towards mine development For personal use only Side Well snapshot Development Pathway 2025 JORC Resource Resource Target 668koz @ 2.8g/t Au1 1.5Moz @ +2.5g/t Au2 Mining Leases in Progress Granted Mining
Slide 16: Regional Gold Projects: Polelle & Wanganui
ASX:GBR REGIONAL GOLD PROJECTS Polelle & Wanganui (Option to acquire 75%) Polelle Project For personal use only ▪ 12km south of Meekatharra & 8km east of the Westgold Bluebird mill ▪ A similar stratigraphic position to Side Well ▪ Previous geochemistry & heritage work presents immediate drill target
Slide 17: Other Projects
ASX:GBR OTHER PROJECTS High quality Gold & Base Metal projects in Western Australia Gold / Nickel Zinc / Lead For personal use only Whiteheads, Kalgoorlie Wellington, Earaheedy Basin 319km2 of highly prospective and Along strike from Rumble strategic tenure located c.40km Resources’ (ASX:RTR) large
Slide 18: Why Invest in GBR?
ASX:GBR WHY INVEST IN GBR? For personal use only Side Well is an opportunity to unlock a long-life mining project: • Large intrusive-related gold system • High grade • <25km from the nearest mill Technically focused exploration team with a strong track record of discovery Undertaking smart, innovati
Slide 19: Important Information
IMPORTANT INFORMATION Purpose of presentation: This presentation has been prepared by Great Boulder Resources Limited (ACN 611 695 955) (GBR). It is intended for the sole purpose of providing high-level For personal use only background information on GBR, its projects and its proposed operations. Th
Slide 20: Thank You
THANK YOU For personal use only GREATBOULDER.COM.AU 20
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