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EMERALD RESOURCES NL Capital/Financing Update 2024

Aug 28, 2024

64849_rns_2024-08-28_96464b6c-c982-43c7-965d-1e9508d42984.pdf

Capital/Financing Update

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ASX Announcement

& Media Release

29 August 2024

Fast Facts

ASX Code: EMR

Shares on issue: 656,175,160 Market Cap: ~A$2.6 billion Cash: A$144.1m (US$95.5m) (30 Jun 2024) Bullion: A$18.2m (US$12.0m) (30 Jun 2024)

Board & Management

Jay Hughes, Non-Executive Chairman Morgan Hart, Managing Director Mick Evans, Executive Director Simon Lee AO, Non-Executive Director Ross Stanley, Non-Executive Director Billie Slott, Non-Executive Director Michael Bowen, Non-Executive Director Mark Clements, Company Secretary Bernie Cleary, Operations Manager Okvau Josh Redmond, Operations Manager DRGP Brett Dunnachie, Chief Corporate Officer Shannon Campbell, Chief Financial Officer

Company Highlights

Team

 Highly credentialed gold project operational and in-house development team;

  • A proven history of building projects on time and on budget.

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Expansion to Underground Resource at Okvau

Okvau Gold Mine Resource Estimate of 12.53Mt @ 2.40g/t Au for 965koz which includes:

  • Underground Resource update increases +105,000oz to 2.13Mt @ 6.00g/t Au for 410koz[1] ; and

  • Open Pit resource of 10.40Mt @1.66g/t Au for 555koz[1]

Highlights

Okvau Gold Mine Mineral Resource and Ore Reserve Highlights:

  • Okvau Gold Mine Mineral Resources continue to be replenished on a yearly basis;

  • Drilling remains ongoing with the view to extend the Okvau Gold Mine resources/reserves through:

  • Infill and extensions to the underground resource to expand resource base and for reserve conversion;

  • Open pit extensions beyond the current pit shell; and

  • Near mine prospects.

Gold Production

  • Okvau Gold Mine commissioned on time on budget in 2021;

  • 2024 production guidance achieved of 114koz gold production at AISC US$818/oz;

Growth

  • Significant exploration and resource growth potential in Cambodia:

  • Okvau Gold Mine reserve expansion;

  • o Memot Project (100%) maiden open pit inferred resource of 8MT @ 1.84g/t Au for 470koz (Updated Resource (interim) expected second half calendar 2024)

  • 1,428km[2] of prospective tenure

  • Significant exploration and resource growth potential in Australia:

  • Dingo Range Gold Project (100%) located on the underexplored Dingo Range greenstone belt

  • Resource expected second half calendar 2024

o 1,300km[2] of prospective tenure

ESG

  • Focussed on a net positive impact on near-mine environmental and social values by targeting strict compliance with corporate governance, international guidelines (IFC PS’s) and local laws by engaging and collaborating with all stakeholders.

Emerald’s Global Resource update for Memot Gold Project (EMR 100%) and Dingo Range Gold Project (EMR 100%) on track for second half of calendar 2024.

Emerald Resources NL (ASX: Emerald) (“Emerald”) is pleased to advise the expansion to the underground resource and continued replenishment of resources at the 100% owned Okvau Gold Mine in Cambodia as part of the Okvau Gold Mine Resource and Reserve update.

Emerald’s Managing Director, Morgan Hart, commented:

"Our resource and reserve update for the Okvau Gold Mine continues to support the Company’s view that resources will be replenished on an ongoing basis with continued drilling to extend the current pit shell, below pit for underground potential and near mine prospects.

“In addition, Emerald has ramped up exploration and development activities at its two 100% owned projects, the Dingo Range Gold Project in Western Australia and the Memot Gold Project in Cambodia with updated resources for both projects on track for the second half of calendar 2024.”

  • Commitment to carbon neutral operations in Cambodia

Registered Office

1110 Hay Street West Perth WA 6005

T: +61 8 9286 6300 F: +61 8 6243 0032

W: www.emeraldresources.com.au

1 Refer to Table 1 Okvau Gold Mine Resource Estimate

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Introduction

The 100% owned Okvau Gold Mine is located in Cambodia approximately 265km northeast of Phnom Penh in the Mondulkiri Province. Emerald is currently mining the Okvau Gold Mine orebody using conventional open pit mining methods. Since first gold pour in June 2021, the project had produced 323,894 ounces of gold with 318,902 ounces poured to June 2024.

Figure 1 | Cambodian Gold Project Locations

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Okvau Gold Mine Resources and Reserve Update

In May 2017 Emerald Resource announced an Open Pit Mineral Indicated and Inferred Resource Estimate of 17.86Mt @ 2.01g/t Au for 1,141,000 ounces gold at a lower cut of 0.7g/t Au. This included a maiden Ore Reserve (Probable) estimate of 14.26Mt @ 1.98g/t Au for 907,000 ounces gold at a lower cut of 0.625g/t Au (refer ASX announcement 1 May 2017 and 31 August 2023).

In August 2023, Emerald announced its maiden underground mineral resource with Indicated Mineral Resources is 600kt at 6.20g/t Au for 120koz and Inferred Mineral Resources of 910kt at 6.35 g/t Au for 185koz is reported (refer ASX announcement 31 August 2023).

Since the previous resource and reserve update in August 2023, 17,580m of RC and Diamond drilling has been completed which was designed to infill the existing drill dataset and extended the mineralisation downdip and along strike. The total Okvau drilling dataset equalling 83,144m of drilling was used to update the Underground Resource of which ~38,000m are beneath the current reserve pit.

The Okvau Gold Mine Resource is 12.53Mt @ 2.40g/t Au for 965koz, comprising 10.40Mt @1.66g/t Au for 555koz Open Pit Resource at a lower cut of 0.625g/t Au and 2.13Mt @ 6.0g/t for 410koz Underground Resource lower cut of 3.0 g/t Au. This included an Ore Reserve (Proven and Probable) estimate at 31 March 2024 is 10.29Mt @ 1.66g/t Au for 548,000 ounces gold at a lower cut of 0.625g/t Au, as summarised in Table 2.

The Okvau Open Pit Inferred and Indicated Mineral Resource is reported at a 0.625g/t Au cut-off grade in the current US$1,450/oz reserve pit shell (refer ASX announcement 1 May 2017 and 31 August 2023). Stockpiled ROM ore is reported as Measured Resource using a lower cut-off grade of 0.4g/t for oxidised ore and 0.5g/t in unoxidised, fresh ore. Measured Resources is 3.52Mt at 0.84 g/t Au for 95koz, Indicated Mineral Resources is 6.83Mt at 2.08 g/t Au for 457koz and Inferred Mineral Resources of 0.05kt at 1.59 g/t Au for 3koz. This is fully depleted for mine depletion as of 31 March 2024.

Beneath the current US$1,450/oz reserve pit shell, a Mineral Resource has been estimated targeting underground mining and being reported applying at 3g/t Au cut-off grade for indicated and inferred resources. Indicated Mineral Resources is 1Mt at 6.00g/t Au for 192koz and Inferred Mineral Resources of 1.13Mt at 6.00 g/t Au for 218koz is reported. The Resource has been diluted for underground mining.

The Okvau Mineral Resource estimates are reported in accordance with the 2012 Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves (the JORC Code).

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29 April 2022

Table 1 | Okvau Gold Mine Resource Estimate

Measured Resources Measured Resources Measured Resources Indicated Resources Indicated Resources Indicated Resources
Inferred Resources

Inferred Resources

Inferred Resources
Total Resources Total Resources Total Resources
Resource Cut Off Tonnage Grade Contained
Tonnage
Grade
Contained

Tonnage
Grade Contained
Tonnage
Grade Contained
Type Au g/t (Mt) (g/t Au)
Au (Koz)
(Mt) (g/t
Au)
Au (Koz) (Mt) (g/t
Au)
Au (Koz) (Mt) (g/t Au)
Au (Koz)
Stockpiles 0.5 3.52 0.84 95 - - - - - - 3.52 0.84 95
Open Pit 0.625 - - - 6.83 2.08
457
0.05 1.59 3 6.88 2.08 460
Underground
3.0
- - - 1.00 6.00
192
1.13 6.00 218 2.13 6.00 410
Total 3.52 0.84 95 7.83 2.58
649
1.18 5.8 221 12.53 2.40 965

Table 2 | Okvau Gold Mine Reserve Estimate

Okvau Gold Mine - March 2024 Reserve Estimate Okvau Gold Mine - March 2024 Reserve Estimate Okvau Gold Mine - March 2024 Reserve Estimate Okvau Gold Mine - March 2024 Reserve Estimate
Resources Tonnage Grade Contained Au (oz)
Type (t) (g/t) Au
Proven 3.52 0.84 95
Probable 6.77 2.08 453
Total 10.29 1.66 548

*tonnage is rounded to the nearest 10,000t, grade is rounded to the second decimal point and ounces are rounded to the nearest 1,000oz

Figure 2 | Cross Section of the Okvau Gold Mine Reserve Pit with the underground resource indicated and inferred block model. Previously announced significant intersections are highlighted

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1 Reference is made to the Company’s ASX release dated 1 May 2017 4 Reference is made to the Company’s ASX release dated 28 April 2017 2 Reference is made to the Company’s ASX release dated 28 January 2021 3 Reference is made to the Company’s ASX release dated 24 January 2024

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Resource Parameters

In accordance with ASX Listing Rule 5.8.1, the following summary information is provided for the understanding of the reported estimates of the Resources:

Geology and Geological Interpretation

The Okvau Deposit is largely hosted in a Cretaceous diorite intrusion emplaced within an upper Triassic metasedimentary host rock package. Gold mineralisation is contained in a north-east trending fracture set in a narrow off-shoot or apophyses from a larger diorite intrusion however extends beyond the diorite contact into the metasediments.

Gold mineralisation is concentrated along a network of brittle/ductile shears and arsenopyrite-rich sulphide veins. The mineralised shears typically comprise 10m to 50m wide core of strongly altered, fractured, and/or sheared rock locally with a weak planar fabric, surrounded by 0.5m to 2m wide less intensely altered halos which retain relict diorite texture. Variably deformed pyrrhotite, arsenopyrite and/or pyrite-rich layers up to 10 metres wide also commonly occur in the core of the shears. Structural and geological observations were used to determine the overall orientation of the individual lodes.

The Okvau resource estimate covers approximately 650m of strike and 500m width of the mineralised vein system, to a maximum depth of 650m below surface.

Drilling Techniques, Sampling and Assaying

The Mineral Resource estimate is based on a database of 390 drill holes, for a total of 83,144m. The database is comprised of 123 diamond holes, 226 RC drill holes and 41 RC collars with diamond tails. New drill data completed after the August 2023 Resource and Current Reserve calculation comprises of 1 diamond hole, 40 RC drill holes and 22 RC collars with diamond tails. These drill holes were designed to infill the existing drill dataset and extend the mineralisation downdip and along strike.

Figure 3 | Plan View of the collars used in both the Open Pit and Underground mineral resource estimation

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29 April 2022 Figure 4 | Plan view of the collars used in the Okvau Underground Resource Estimate with historic results (blue highlights) and recent significant intercepts (black highlights).

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1 Reference is made to the Company’s ASX release dated 30 October 2023 4 Reference is made to the Company’s ASX release dated 31 July 2024
2 Reference is made to the Company’s ASX release dated 24 January 2024 5 Reference is made to the Company’s ASX release dated 28 July 2022
3 Reference is made to the Company’s ASX release dated 18 April 2024 6 Reference is made to the Company’s ASX release dated 02 July 2019
7 Reference is made to the Company’s ASX release dated 28 April 2017
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Drilling at the Okvau Gold Deposit is typically spaced at 25m by 25m centres in the top 120m of the deposit. Below 120m vertical the drill spacing widens to 50m drill sections and 25m or 50m along section and wider still beyond 450m vertical.

Information regarding the data used to inform the previously quoted 2017 and 2023 resources, has been previously announced (refer ASX announcement 1 May 2017 and 31 May 2017). The diamond core from the drill data completed after 2016 was sampled using half-core where the core is cut in half down the longitudinal axis. The core was sampled on 1m sample intervals, as determined by a geologist based on viewing potential mineralisation, otherwise in zones of interpreted waste, the core was sampled at 2m intervals. Only 1% of the new drill data of grade greater than 0.2g/t Au was sampled at a 2m interval and 1.9% across the entire data set.

The RC drill data collected after 2016 was taken as a 4m composite from the excess bagged material off the cone splitter taken every 1m. A spear sampling technique is then used to produce a 3-5kg composite sample. The 1m samples are split with a cone splitter at the drill rig to produce a 3-5kg sub-sample. These 1m samples are submitted after the results of the 4m composites were received indicate mineralisation or instead of the composited sample if potential mineralisation is identified in the logging.

Sampling assays from the drill data completed after 2016 were carried out at a commercial off-site laboratory (ALS Phnom Penh). Gold assays are conducted at ALS Vientiane, Laos, utilising Au-AA26 50g fire assay read by AAS. Multi-element assay is completed at ALS, Brisbane, Australia with ME-MS44 and ME-ICP44 + Au 50g (Au-TL44) aqua regia extraction with ICPMS finish.

Estimation Methodology and Classification

The lithological constraints and oxidation surfaces were generated by Emerald technical staff and were applied to the grade estimation. The modelled lithology includes diorite and metasedimentary (hornfels) host rocks. An oxidation surface representing the top of fresh rock was also modelled.

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Underground Mineral Resource

The Underground Mineral Resource estimate is based on wireframes (estimation domain) generated with implicit vein modelling in Micromine by Emerald technical staff, using drillholes coded with a mineralisation interpretation generated by Emerald technical staff. The wireframes identify numerous domains using a nominal cut-off of 1.5g/t Au, with a downhole width of no less than 3 metres, to account for expected mining dilution, and was generated using the known geological controls on gold mineralisation. Where appropriate, sub-economic samples and intervals have been included in the wireframes to ensure continuity of the interpretation including a maximum of 2 metres of internal dilution. The underground Mineral Resource gold estimate was determined using Ordinary Kriging (‘OK’) within the wireframe constraints. A block size of 5mNx 5mE x 5mRL, sub-blocked to 2.5m x 2.5m x 2.5m, was used and the model was constrained by a topographic survey and the 2017 reserve pit design.

The OK estimate was generated using a multi-pass estimation approach, with the search ellipse oriented in line with the interpreted mineralised bodies. Search ellipse dimensions were chosen to encompass adjacent drillholes on sections and adjacent lines of drilling along strike and designed to fully estimate the mineralised domains. Any blocks not estimated in the first estimation pass were estimated in a second pass with an expanded search neighbourhood with relaxed conditions to allow the domains to be fully estimated. The blocks within the first estimate pass were considered an indicated resource category, while the blocks within the second estimation pass were categorised as inferred.

The grade estimates are based on 1m down-the-hole composites of the RC and diamond drilling. High grade cuts were applied to the composite data to limit the influence of high-grade outliers. High-grade cuts have been determined via top cut analysis in Micromine, with a high grade cut of 66g/t Au being applied to the dataset.

In the Resource no rigorous application has been made of minimum mining width, internal or external dilution or other modifying factors, and the Resource is reported in situ. The grade estimate was validated visually.

An additional 150kt at 6.47g/t Au for 31koz of metal inventory has been estimated outside the Resources reported in this announcement.

The Underground Mineral Resource estimate stated herein does not consider other modifying factors that might arise out of mine planning and design such as ore loss, mining dilution or other mineralised material that might be mined in order to access stoping areas during general underground production activities.

Bulk Density

A bulk density dataset was collected throughout the deposit via the immersion method of core billets and routine grab samples collected from the current mined pit. Bulk density measurements (1,256 samples) were averaged from within the mineralised domain and 3.05g/cm³ has been assigned to unoxidized fresh material in the block model for tonnage reporting.

Potential for Eventual Economic Extraction

The Open Pit Mineral Resource comprises blocks with an estimated gold grade above 0.625g/t Au, the current open pit mining break-even cut-off grade for ore is circa 0.40 g/t Au. This is derived from cost and revenue parameters utilised by the current mining within existing reserve pit estimated based on a gold price of US$2,500/oz.

Underground Mineral Resource comprises blocks with an estimated gold grade above 3g/t Au. This cut-off grade has been selected to be the minimum grade required for economic extraction with a nominal profit margin at current metal prices.

The same metallurgical and recovery assumptions as the 2017 Mineral Resource estimate were also applied to the Underground Resources reported in this document.

Ore Reserve

The Ore Reserve for the Project has been updated in accordance with the JORC Code, 2012 Edition, using the updated Mineral Resource Estimate detailed above and accounts for depletion of the Okvau Open Pit to 31 March 2024. The Ore Reserve is based on Indicated Mineral Resources and as such is stated as Probable Ore Reserves. A more detailed description is contained in Appendix One. No material changes have been made to the processes by which the Ore Reserve is calculated, nor to the assumptions made while producing the Ore Reserve (refer ASX announcement 1 May 2017).

The cut-off grade used in the estimation of the Ore Reserve is the non-mining, break-even gold grade taking into account modifying factors of mining recovery and dilution, metallurgical recovery, site operating costs, royalties and revenues. All these factors have been estimated to a DFS level. For reporting of Ore Reserves the calculated cut-off grade is 0.625g/t Au. The Ore Reserve estimate is reported within the open pit mine design.

There are no regulatory, environmental, or social impact considerations presently known that are likely to impact eventual economic extraction of the Mineral Resource.

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Okvau Near Mine Exploration

As previously announced, the Okvau Gold Project has several nearby prospects such as Samnang, Okvau North and Preak Klong (refer Figures 5 and 6) with the potential of becoming sources of supplement feed for the Okvau Gold Mine mill. Additional drilling has been planned on all prospects to infill and extend the significant drill results listed below:

Samnang

  • refer ASX announcement 27 December 2017

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  • 9m @ 6.60g/t Au from 0m;

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  • 5m @ 7.48g/t Au from 14m;

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  • 3m @ 8.93g/t Au from 28m;

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  • 10m @ 2.46g/t Au from 36m; and

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  • 9m @ 2.03g/t Au from 52m.

Okvau North

  • refer ASX announcement 4 July 2023[(1)] and 30 October 2023[(2)]

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  • 8m @ 19.21g/t Au from 20m[(1)] ;

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  • 3m @ 49.81g/t Au from 21m[(1)] ;

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  • 3m @ 7.68g/t Au from 64m[(1)] ;

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  • 2m @ 10.63g/t Au from 92m[(2)] ;

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  • 8m @ 1.87g/t Au from 37m[(2)] ; and

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  • 4m @ 1.62g/t Au from 110m[(1)] .

Preak Klong NW and Gossan

  • *refer ASX announcement 1 April 2020[(3)] and 29 April 2022[(4)]

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  • 3m @ 31.09g/t Au from 65m[(3)] ;

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  • 3m @ 9.87g/t Au from 139m[(3)] ;

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  • 2m @ 14.07g/t Au from 21m[(3)] ;

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  • 5m @ 3.11g/t Au from 41m[(4)] ;

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  • 3m @ 8.92g/t Au from 73m[(4)] ;

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  • 4m @ 10.25g/t Au from 56m[(4)] ;

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  • 3m @ 12.94g/t Au from 38m[(4)] ;

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  • 3m @ 8.51g/t Au from 58m[(4)] ; and

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  • 2m @ 13.49g/t Au from 89m[(4)] .

Figure 5 | Cambodian licences with Okvau Gold Mine and Memot Gold Project highlighted

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Refer to the Company’s ASX Announcements 18 April 2024, 30 October 2023, 4 July 2023, 28 April 2023, 29 April 2022, 31 January 2022, 20 December 2017, 4 February 2013 and 17 August 2012

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29 April 2022 Figure 6 | Plan of Okvau Pit with significant intersections from Samnang and Okvau North prospects

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1 Refer Company’s ASX release dated 20 December 2017 3 Refer Company’s ASX release dated 30 October 2023 5 Refer Company’s ASX release dated 18 April 2024
2 Refer Company’s ASX release dated 4 July 2023 4 Refer Company’s ASX release dated 24 January 2024 6 Refer Company’s ASX release dated 31 July 2024
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This ASX release was authorised on behalf of the Emerald Board by: Morgan Hart, Managing Director.

For further information please contact Emerald Resources NL

Morgan Hart Managing Director

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About Emerald Resources NL

Overview

Emerald is a developer and explorer of gold projects. Emerald’s Okvau Gold Mine, Cambodia was commissioned in June 2021 and in full production by September 2021. Emerald has now poured over 300kozs of gold from its operations.

Emerald has significant exploration and resource growth potential in Cambodia through its holdings in a number of other projects which are made up of a combination of granted mining licences (100% owned by Emerald) and interests in joint venture agreements. Together, Emerald’s interests in its Cambodian Projects covers a combined area of 1,428km².

Emerald has significant exploration and resource growth potential in Australia with two highly prospective Western Australian gold projects comprising in excess of 1,300km² of tenure including the Dingo Range Gold Project which covers in excess of 900km² of the entire Dingo Range greenstone belt.

Emerald has a highly experienced management team, undoubtedly one of the best credentialed gold development teams in Australia with a proven history of developing projects successfully, quickly and cost effectively. They are a team of highly competent mining engineers and geologists who have overseen the successful development of gold projects in developing countries such as the Bonikro Gold Project in Cote d’Ivoire for Equigold NL and more recently, Regis Resources Ltd.

Forward Looking Statement

This document contains certain forward looking statements. These forward-looking statements are not historical facts but rather are based on the Company’s current expectations, estimates and projections about the industry in which Emerald Resources operates, and beliefs and assumptions regarding the Company’s future performance. Words such as “anticipates”, “expects”, “intends”, “plans”, “believes”, “seeks”’ “estimates”, “potential” and similar expressions are intended to identify forward-looking statements. These statements are not guarantees of future performance and are subject to known or unknown risks, uncertainties and other factors, some of which are beyond the control of the Company, are difficult to predict and could cause actual results to differ materially from those expressed or forecasted in the forward looking statements, which reflect the view of Emerald Resources only as of the date of this announcement. The forward looking statements made in this release relate only to events as of the date on which the statements are made. Emerald Resources will not undertake any obligation to release publicly any revisions or updates to these forward-looking statements to reflect events, circumstances or unanticipated events occurring after the date of this announcement except as required by law or by any appropriate regulatory authority. This document has been prepared in compliance with the current JORC Code 2012 Edition and the ASX listing Rules.

The Company believes that is has a reasonable basis for making the forward-looking statements in this announcement, including with respect to any production targets and financial estimates, based on the information contained in this announcement. Reference is made to ASX Announcements dated 1 May 2017 and 26 November 2019. All material assumptions underpinning the production target, or the forecast financial information continue to apply and have not materially changed. 100% of the production target referred to in this announcement is based on Probable Ore Reserves.

Emerald has a highly experienced management team, undoubtedly one of the best credentialed gold development teams in Australia with a proven history of developing projects successfully, quickly and cost effectively. They are a team of highly competent mining engineers and geologists who have overseen the successful development of gold projects in developing countries such as the Bonikro Gold Project in Cote d’Ivoire for Equigold NL and more recently, Regis Resources Ltd.

Competent Persons Statements

The information in this report that relates to Exploration Drill Results for both Resources from Okvau is based on information compiled by Mr Keith King, who is an employee to the Company and who is a Member of The Australasian Institute of Mining & Metallurgy. Mr Keith King has sufficient experience which is relevant to the style of mineralisation and type of deposits under consideration and to the activity which he is undertaking to qualify as a Competent Person as defined in the 2012 Edition of the ‘Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves’. Mr King has reviewed the contents of this release and consents to the inclusion in this announcement of all technical statements based on his information in the form and context in which it appears.

The information in this report that relates to Open Pit Mineral Resources for the Okvau Gold Deposit was prepared by EGRM Consulting Pty Ltd, Mr Brett Gossage, who is a consultant to the Company, who is a Member of the Australasian Institute of Mining & Metallurgy (AUSIMM), and has sufficient experience relevant to the style of mineralisation and type of deposit under consideration and to the activity which he is undertaking to qualify as a Competent Person as defined by the 2012 edition of the "Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves". Mr Gossage has reviewed the contents of this release and consents to the inclusion in this announcement of all technical statements based on his information in the form and context in which it appears.

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29 April 2022 The information in this report that relates to Underground Mineral Resources for the Okvau Gold Deposit was prepared by Mr Keith King, who is an employee to the Company, who is a Member of the Australasian Institute of Mining & Metallurgy (AusIMM), and has sufficient experience relevant to the style of mineralisation and type of deposit under consideration and to the activity which he is undertaking to qualify as a Competent Person as defined by the 2012 edition of the "Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves".

Mr King has reviewed the contents of this news release and consents to the inclusion in this announcement of all technical statements based on his information in the form and context in which it appears.

Information in this announcement that relates to Ore Reserves for the Okvau Gold Deposit is based on, and fairly represents, information and supporting documentation prepared by Mr Glenn Williamson, an independent specialist mining consultant. Mr Williamson is a Member of the Australasian Institute of Mining & Metallurgy. Mr Williamson has sufficient experience which is relevant to the style of mineralisation and type of deposit under consideration and to the activity which he is undertaking to qualify as a Competent Person (or ‘CP’) as defined in the 2012 edition of the "Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves". Mr Williamson has reviewed the contents of this news release and consents to the inclusion in this announcement of all technical statements based on his information in the form and context in which it appears.

No New Information

To the extent that announcement contains references to prior exploration results and Mineral Resource estimates, which have been cross referenced to previous market announcements made by the Company, unless explicitly stated, no new material information is contained. The Company confirms that it is not aware of any new information or data that materially affects the information included in the relevant market announcements and, in the case of estimates of Mineral Resources that all material assumptions and technical parameters underpinning the estimates in the relevant market announcement continue to apply and have not materially changed.

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29 April 2022

Appendix One | JORC Code, 2012 Edition | ‘Table 1’ Report

Section 1 Sampling Techniques and Data from Drilling included in Resources

(Criteria in this section apply to all succeeding sections).

Criteria JORC Code explanation Commentary
Sampling
techniques
• Nature and quality of sampling (eg cut channels,
random chips, or specific specialised industry
standard measurement tools appropriate to the
minerals under investigation, such as down hole
gamma sondes, or handheld XRF instruments,
etc). These examples should not be taken as
limiting the broad meaning of sampling.
• Include reference to measures taken to ensure
sample representivity and the appropriate
calibration of any measurement tools or systems
used.
• Aspects of the determination of mineralisation
that are Material to the Public Report.
• In cases where ‘industry standard’ work has
been done this would be relatively simple (eg
‘reverse circulation drilling was used to obtain 1
m samples from which 3 kg was pulverised to
produce a 30g charge for fire assay’). In other
cases, more explanation may be required, such
as where there is coarse gold that has inherent
sampling problems. Unusual commodities or
mineralisation types (eg submarine nodules)
may warrant disclosure of detailed information.
• Diamond drilling is used to recover a
continuous core sample of bedrock. As a
standard 1m length half-core samples are
submitted for assay, in a small number of cases
sample interval lengths have been modified to
use geological boundaries as the limit of
sample interval for assay.
• Reverse circulation (RC) drilling is used to
collect 1m samples prior to 2017 these are riffle
split at the drill rig to produce a 3-5kg sub-
sample From 2017 reverse circulation (RC)
drilling is used to collect both a 4m composite
and 1m samples. The 4m composited are taken
from the excess bagged material off the cone
splitter taken every 1m. A spear sampling
technique is then used to produce a 3-5kg
composite sample. The 1m samples are split
with a cone splitter at the drill rig to produce a
3-5kg sub-sample. These 1m samples are
submitted after the results of the 4m
composites are received to identify the zones of
mineralisation.
• Current drill sample preparation is carried out
at a commercial off-site laboratory (ALS Phnom
Penh). Gold assays are conducted at ALS
Vientiane, Laos utilising a 50gram subsample of
85% passing 75µm pulped sample using Fire
Assay with AAS finish on and Aqua Regia digest
of the lead collection button. Multi-element
assay is completed at ALS, Perth, Australia on a
1g pulp subsample digested by Aqua Regia and
determined by ICP-AES or ICP-MS for lowest
available detection for the respective element.
• Sample preparation is carried out at a
commercial off-site laboratory (ALS Phnom
Penh) and gold assays are conducted at the ALS
Vientiane assay laboratory.
• Standards, duplicates and blanks are inserted in
sample batches to test laboratory performance.
Drilling
techniques
• Drill type (eg core, reverse circulation, open-
hole hammer, rotary air blast, auger, Bangka,
sonic, etc) and details (e.g. core diameter, triple
or standard tube, depth of diamond tails, face-
sampling bit or other type, whether core is
oriented and if so, by what method, etc).
• A track-mounted Boart Longyear LF70 M/P drill
rig is used to drill HQ3 and NQ2 diamond core.
• A track mounted Boart Longyear DB540 M/P
drill rig is used to drill 5.25 inch RC holes.
• Core diameter varies – HQ, HQ3, NQ, NQ2,
NQ3, NTW and BTW used at various times.
• Core was oriented by means of a REFLEX ACT
orientation tool, following a standard operating
procedure, for all drilling subsequent to 2009. A
spear tool was used for drilling pre-2009.

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Criteria
JORC Code explanation Commentary
Drill
sample
recovery
• Method of recording and assessing core and
chip sample recoveries and results assessed.
• Measures taken to maximise sample recovery
and ensure representative nature of the
samples.
• Whether a relationship exists between sample
recovery and grade and whether sample bias
may have occurred due to preferential loss/gain
of fine/coarse material.
• All RC 1m samples and sub-samples (pre- and
post-split) are weighed at the rig, to check that
there is adequate sample material for assay.
Any wet or damp samples are noted and that
information is recorded in the database;
samples are usually dry.
• Diamond core recovery is routinely monitored
by comparing recovered core vs drill run
lengths – recovery is consistently high.
Recovery data are recorded on drill run lengths.
• There is no relationship between sample
recoveryandgrade.
Logging • Whether core and chip samples have been
geologically and geotechnically logged to a
level of detail to support appropriate Mineral
Resource
estimation,
mining
studies
and
metallurgical studies.
• Whether logging is qualitative or quantitative in
nature.
Core
(or
costean,
channel,
etc)
photography.
• The total length and percentage of the relevant
intersections logged.
• All RC chips and diamond core is routinely
logged (qualitatively) by a geologist, to record
details
of
regolith
(oxidation),
lithology,
structure, mineralisation and/or veining, and
alteration.
In
addition,
the
magnetic
susceptibility of all samples is routinely
measured. All logging and sampling data are
captured into a database, with appropriate
validation and security features.
• A geotechnical log is produced for all diamond
core.
• Core has been logged to an appropriate level of
detail by a geologist to support mineral
resource estimation.
• 100% of core is logged, with the mineralised
intersections logged to greater detail.
• In addition to the geological logging, other
features recorded are: location of bulk density
samples; downhole camera survey calibration,
intervals
confidently
oriented;
and
core
condition.
• Standard field data are similarly recorded
(qualitatively) routinely by a geologist for all soil
samplingsites.
Sub-sampling
techniques and
sample
preparation
• If core, whether cut or sawn and whether
quarter, half or all core taken.
• If non-core, whether riffled, tube sampled,
rotary split, etc and whether sampled wet or dry.
• For all sample types, the nature, quality and
appropriateness of the sample preparation
technique.
• Quality control procedures adopted for all sub-
sampling stages to maximise representivity of
samples.
• Measures taken to ensure that the sampling is
representative of the in-situ material collected,
including
for
instance
results
for
field
duplicate/second-half sampling.
• Whether sample sizes are appropriate to the
grain size of the material beingsampled.
• Field duplicates are inserted at regular intervals
downhole (every 25m) and are collected at the
RC drill rig to monitor sampling precision; while
coarse crush duplicates of diamond core are
generated at the sample prep stage (because of
the need to preserve drill core).
• This sample technique is industry standard and
is deemed appropriate for the deposit style at
Okvau.
Quality of assay
data
and
laboratory tests
• The nature, quality and appropriateness of the
assaying and laboratory procedures used and
whether the technique is considered partial or
total.
• For geophysical tools, spectrometers, handheld
XRF instruments, etc, the parameters used in
determining the analysis including instrument
make and model, reading times, calibrations
factors applied and their derivation, etc.
• All drill samples are sent to the NATA accredited
ALS Laboratory in Vientiane, Laos, for fire assay.
From 2016 a 50g fire assay was completed (Au-
AA26: 50g ore grade method, total extraction
by fusion, with an AA finish). Samples reporting
>100ppm upper detection limit are repeated by
Au-AAGRA22 method, graphite furnace with
gravimetric finish. Pre 2016, a 30g fire assay was
completed (Au-AA25: 30g ore grade method,
total extraction by fusion, with an AA finish),
samples
which
report
>100ppm
upper
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Criteria
JORC Code explanation Commentary
• Nature of quality control procedures adopted
(eg standards, blanks, duplicates, external
laboratory checks) and whether acceptable
levels of accuracy (ie lack of bias) and precision
have been established.
detection limit are repeated by Au-AAGRA22
method, graphite furnace with gravimetric
finish.
• Resource and Metallurgy samples are sent to
the similarly accredited ALS Lab in Brisbane,
Australia, for multi-element ICP analysis, after
aqua regia digest of a 1g charge by ME- MS42:
ICP-MS for Ag, As, Bi, Cu, Sb, Te, Hg. Multi-
element samples returning >250ppm upper
limit for Ag, As, Bi, Cu, Sb, Te by ME-MS42 are
repeated by ME-IC41: ICP-AES.
• All Exploration 1m RC samples and soil samples
are sent to the NATA accredited ALS Laboratory
in Brisbane, Australia, for gold and multi-
element ICP analysis, after digest of a 50g
charge by aqua regia (TL44-MEPKG, ICP
MS/AES for Au, Ag, Al, As, B, Ba, Be, Bi, Ca, Cd,
Ce, Co, Cr, Cu, Fe, Ga, Hg, K, La, Mg, Mn, Mo,
Na, Ni, P, Pb, S, Sb, Sc, Se, Sn, Sr, Te, Th, Ti, Tl,
Te, Th, Ti, Tl, U, V, W, Zn.
• Fire assay is considered a total gold assay.
• This method has a lower detection limit of
0.01g/t Au.
• All magnetic susceptibility measurements of
drill samples are made with a Terraplus KT-10
magnetic susceptibility meter.
• An
appropriate
sample
preparation
and
analytical quality control programme confirms
that the gold fire assay values are of acceptable
quality
to
underpin
mineral
resource
estimation.
• Industry-standard
QAQC
protocols
are
routinely followed for all sample batches sent
for assay, which includes the insertion of
commercially available CRMs and blanks into all
batches - usually 1 of each for every 20 field
samples. Some blanks used are home-made
from barren basalt or quarry granite. QAQC
data
are
routinely
checked
before
any
associated assay results are reviewed for
interpretation,
and
any
problems
are
investigated before results are released to the
market.
• All assay data, including internal and external
QA/QC data and control charts of standard,
replicate and duplicate assay results, are
communicated electronically.
• Reviews of QA/QC data by Emerald Technical
staff concluded that the quality of assay data is
sufficient to support reporting of the Okvau
Resource Estimate.
Verification
of
sampling
and
assaying
• The verification of significant intersections by
either independent or alternative company
personnel.
• The use of twinned holes.
• Documentation of primary data, data entry
procedures, data verification, data storage
(physical and electronic) protocols.
• Discuss any adjustment to assay data.
• The calculations of all significant intercepts (for
drill holes) are routinely checked by senior
management.
• Two
close
spaced
(twin)
holes
confirm
confidence in the existence and projection of
mineralised intercepts over short ranges.
• All field data associated with drilling and
sampling, and all associated assay and
analytical results, are managed in a relational
database, with industry-standard verification
protocols and securitymeasures inplace.

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Criteria
JORC Code explanation Commentary
• Brett Gossage visited the site in December 2016
and Keith King has visited the site frequently,
with the most recent being April 2024, and
visually verified the results in the assay
database against mineralised intersections
evident in the stored half core.
Location of data
points
• Accuracy and quality of surveys used to locate
drill holes (collar and down-hole surveys),
trenches, mine workings and other locations
used in Mineral Resource estimation.
• Specification of the grid system used.
• Quality and adequacy of topographic control.
• Drill hole collar locations are surveyed with a
differential GPS used in RTK survey mode. The
instrument has sub centimetre accuracy for
both horizontal coordinates and vertical
coordinates.
• All locations are surveyed to the Okvau Mine
Site Local Grid. Collar coordinates are routinely
converted to the Indian 60 Cambodia grid.
• In 2017, Wes Gartrell, a WA authorised mine
surveyor, completed checks on the survey. His
work confirmed the accuracy of all the
previously collected survey data. From 2017 –
2021 in country contract surveyor’s “Aruna”
were used up to the commencement of mining
where licenced mine surveyors have recorded
the collar locations. Since 2021 the employed
licenced mine site surveyors have recorded the
collar locations.
• The first 9 holes of the Okvau resource drill hole
database were not surveyed downhole; but all
subsequent holes were surveyed downhole at
25-30m intervals for all types of drilling, using a
single-shot REFLEX survey tool (operated by the
driller
and
checked
by
the
supervising
geologist).
• A topography surface was generated using data
collected
from
a
UAV
(drone)
survey
referencing established survey control. This
topography surface was confirmed by the
survey positions of the drill collars and was
applied to this Study.
Data
spacing
and distribution
• Data spacing for reporting of Exploration
Results.
• Whether the data spacing and distribution is
sufficient to establish the degree of geological
and grade continuity appropriate for the
Mineral Resource and Ore Reserve estimation
procedure(s) and classifications applied.
• Whether sample compositing has been applied.
• Intersection spacing for the Okvau Resource
Estimate is typically 25m by 25m or better in the
top 100m of the deposit. Below 120mRL vertical
metres the drill spacing widens to 25m drill
sections and 50m on or along section and wider
still beyond 450m vertical
• RC grade control drilling (pattern from 5m by
5m) and in pit mapping is also available
• This drill spacing is considered to be sufficient
to establish geological and grade continuity
appropriate for the declaration of a Mineral
Resource.
• No samples within a “zone of interest” are ever
composited.
Orientation
of
data in relation
to
geological
structure
• Whether the orientation of sampling achieves
unbiased sampling of possible structures and
the extent to which this is known, considering
the deposit type.
• If
the
relationship
between
the
drilling
orientation
and
the
orientation
of
key
mineralised structures is considered to have
introduced a sampling bias, this should be
assessed and reported if material.
• Drill holes are usually designed to intersect
target structures with a “close-to-orthogonal”
intercept.
• Drilling has been done at various orientations;
moderately to steeply northwest dipping is the
most common.
• Most of the drill holes intersect the mineralised
zones at sufficient angle for the risk of
significant samplingorientation bias to be low.
Sample security • The measures taken to ensure sample security. • The chain of custody for all drill samples from
the drill rig and soil/auger samples from the
field to the ALS Sample Preparation facilityin
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Criteria
JORC Code explanation Commentary
Phnom Penh is managed by Renaissance
personnel. Drill samples are transported from
the drill site to the Okvau exploration core farm,
where they are logged and all samples are
batched up for shipment to Phnom Penh.
• Sample submission forms are sent to the ALS
Sample Prep facility in paper form (with the
samples themselves) and also as an electronic
copy. Delivered samples are reconciled with the
batch
submission
form
prior
to
the
commencement of any sample preparation.
• ALS is responsible for shipping sample pulps
from Phnom Penh to the analytical laboratories
in Vientiane, Brisbane and Perth and all samples
are
tracked
via
their
Global
Enterprise
Management System.
• All bulk residues are stored permanently at the
ALS laboratory in Vientiane.
• No information is available regarding sample
security procedures for the historical drilling
results reported.
Audits or reviews • The results of any audits or reviews of sampling
techniques and data.
• All QAQC data are reviewed routinely, batch by
batch, and on a quarterly basis to conduct trend
analyses, etc. Any issues arising are dealt with
immediately and problems resolved before
results are interpreted and/or reported.
• Comprehensive QAQC audits have been
conducted on this project by Duncan Hackman
(August 2009, February 2010 & November
2011), SRK (February 2013), Nola Hackman
(January 2014), Brian Wolfe (2015) and Brett
Gossage (2017).
• Senior Emerald Technical staff routinely review
the available quality data and have concluded
the data quality is robust and appropriate for
resource estimation studies.
• Senior
Emerald
Technical
staff
routinely
conduct on site laboratory reviews for any
laboratory used for analysis. The most recent
review of the both the ALS Sample Preparation
facility in Phnom Penh, Cambodia and the ALS
Assay Laboratory in Vientiane, Laos were made
in October 2023.

Section 2 Reporting of Exploration Results from Recent Drilling at Okvau

(Criteria listed in the preceding section also apply to this section)

Criteria Explanation Commentary
Mineral tenement
and land tenure
status
• Type, reference name/number, location and
ownership including agreements or material
issues with third parties such as joint ventures,
partnerships, overriding royalties, native title
interests, historical sites, wilderness or national
park and environmental settings.
• The security of the tenure held at the time of
reporting along with any known impediments to
obtaining a licence to operate in the area.
• The Okvau Project is located on the Okvau
Industrial Mining Licence (No.003) which is held
(100%) in the name of Renaissance Minerals
(Cambodia) Ltd, a wholly owned Cambodian
subsidiary of Renaissance Minerals Ltd. Emerald
Resources NL owns 100% of Renaissance
Minerals Ltd.
• The tenure is considered to be completely
secure.
• The Okvau Exploration Licence is located within
the broader Phnom Prich Wilderness Sanctuary
area but located outside of the ‘core zone’.

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Criteria
Explanation Commentary
• The Royal Government of Cambodia (via the
Ministry of Mines and Energy) has been very
supportive throughout the construction and
miningof the Project to date.
Exploration done
by other parties
• Acknowledgment and appraisal of exploration
by other parties.
• Renaissance Minerals (Cambodia) Ltd was
acquired by Renaissance Minerals Ltd (ASX RNS)
in May 2012 and was formerly named OZ
Minerals (Cambodia) Ltd when it was a 100%
owned subsidiary of OZ Minerals Ltd. OZ
Minerals was formed in 2009 by the merger of
Oxiana Ltd (who initiated the Okvau Project) and
Zinifex.
• Oxiana and OZ Minerals completed the
following work at Okvau between 2006 and
2011: a resource drill-out of the Okvau deposit;
plus a regional geological interpretation of
Landsat
imagery;
stream
sediment
geochemistry, with some soil sampling follow-
up; airborne magnetic and radiometric surveys
over both ELs, and various ground geophysical
surveys (including gradient array IP); geological
mapping and trenching; and the initial drill
testingof various exploration targets.
Geology • Deposit type, geological setting and style of
mineralisation.
• The Okvau deposit is interpreted as an
“intrusion-related gold system”. It is hosted
mostly in Cretaceous age diorite and, to a lesser
extent,
in
surrounding
hornfels
(metamorphosed,
fine-grained
clastic
sediments). Gold mineralisation is hosted within
a complex array of sulphide veins, which strike
northeast to east-west, and dip at shallow to
moderately steep angles, to the south and
southeast.
• Mineralisation is structurally controlled and
mostly confined to the diorite. The highest grade
intersections generally occur at the diorite-
hornfels contact.
• The host diorite at Okvau is one of numerous
similar Cretaceous-aged intrusions in eastern
Cambodia, which are believed to be related to
an ancient subduction zone that was located to
the east,off the coast of current Vietnam.
Drill
hole
Information
• A summary of all information material to the
understanding
of
the
exploration
results
including
a
tabulation
of
the
following
information for all Material drill holes:
-
easting and northing of the drill hole collar;
-
elevation or RL (Reduced Level – elevation
above sea level in metres) of the drill hole
collar;
-
dip and azimuth of the hole;
-
down hole length and interception depth;
-
hole length.
If the exclusion of this information is justified on
the basis that the information is not Material
and this exclusion does not detract from the
understanding of the report, the Competent
Person should clearly explain why this is the
case.
• The Okvau Resource Estimate is based on a
database of 390 drill holes, for a total of
83,144m. The database is comprised of 123
diamond holes (36,482m), 226 RC drill holes
(26,707m) and 41 RC collars and diamond tails
(19,955m). Intersection spacing for the Okvau
Resource Estimate is typically 25m by 25m in the
top 100m of the deposit. Below 120mRL vertical
metres the drill spacing widens to 25m drill
sections and 50m on or along section and wider
still beyond 450m vertical
Data aggregation
methods
• In reporting Exploration Results, weighting
averaging
techniques,
maximum
and/or
minimumgrade truncations(egcuttingof high
• Compositing done the Okvau Resource Estimate
is discussed in Section 3.

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Criteria
Explanation Commentary
grades) and cut-off grades are usually Material
and should be stated.
• Where aggregate intercepts incorporate short
lengths of high grade results and longer lengths
of low grade results, the procedure used for
such aggregation should be stated and some
typical examples of such aggregations should
be shown in detail.
• The assumptions used for any reporting of
metal equivalent values should be clearlystated.
Relationship
between
mineralisation
widths
and
intercept lengths
• These relationships are particularly important in
the reporting of Exploration Results.
• If the geometry of the mineralisation with
respect to the drill hole angle is known, its
nature should be reported.
• If it is not known and only the down hole lengths
are reported, there should be a clear statement
to this effect (eg ‘down hole length, true width
not known’).
• The majority of drill holes intersect the
mineralisation at a sufficient angle for the risk of
sampling orientation bias to be low.
Diagrams • Appropriate maps and sections (with scales) and
tabulations of intercepts should be included for
any significant discovery being reported These
should include, but not be limited to a plan view
of drill hole collar locations and appropriate
sectional views.
• Appropriate maps are included in the body of
this release.
Balanced
reporting
• Where
comprehensive
reporting
of
all
Exploration
Results
is
not
practicable,
representative reporting of both low and high
grades and/or widths should be practiced to
avoid misleading reporting of Exploration
Results.
• All significant drilling results are intersections
with a minimum of 2 gram metre values.
Other substantive
exploration data
• Other exploration data, if meaningful and
material, should be reported including (but not
limited to): geological observations; geophysical
survey results; geochemical survey results; bulk
samples – size and method of treatment;
metallurgical
test
results;
bulk
density,
groundwater,
geotechnical
and
rock
characteristics;
potential
deleterious
or
contaminatingsubstances.
• Surface geological mapping and detailed
structural studies have helped inform the
geological model of the Okvau Deposit.
• Emerald has completed a Definitive Feasibility
Study.
This
study
included
metallurgical,
geotechnical and hydrological studies.
Further work • The nature and scale of planned further work
(eg tests for lateral extensions or depth
extensions or large-scale step-out drilling).
• Diagrams clearly highlighting the areas of
possible
extensions,
including
the
main
geological interpretations and future drilling
areas,
provided
this
information
is
not
commerciallysensitive.
• Further drilling at the Okvau Deposit will be
undertaken to test lateral extensions of the
known mineralisation
• Further drilling will be undertaken to test new
targets, as potential is recognized.

Section 3 Estimation and Reporting of Mineral Resources

(Criteria listed in the preceding section also apply to this section)

Criteria Explanation Commentary
Database integrity • Measures taken to ensure that data has not
been corrupted by, for example, transcription or
keying errors, between its initial collection and
its use for Mineral Resource estimation
purposes.
• Data validation procedures used.

During site visits, field observations were
compared
with
the
corresponding
information in the database.

Visual checks were made to confirm that
mineralised intervals evident in the drill core
corresponded with assay results in the
database.

Collar positions were checked on the ground
to confirm positional accuracy.

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Criteria
Explanation Commentary
Site visits • Comment on any site visits undertaken by the
Competent Person and the outcome of those
visits.
• If no site visits have been undertaken indicate
why this is the case.
Open Pit Resource Estimation

Site visits are regularly conducted by Keith
King, with the most recent being April 2024.
No material issues have been identified as
part of these visits.

A site visit was completed to the Okvau site
by Brett Gossage on 6 December 2016. In
addition,
the
ALS
sample
preparation
laboratory in Phnom Penh was reviewed on
30/10/2023. The ALS laboratory in Vientiane,
Laos was reviewed on 23/10/2023. No
material issues were identified at either
laboratory.

Diamond drilling was being completed during
the site visit. The drilling and sampling was
completed consistent with good industry
practice.

The
core
management
facilities
were
observed, and appeared to be organised and
well suited to managing the logging and
sampling procedures efficiently.

No RC drilling was being completed during
the site visit. The drilling and sampling
protocols were reviewed and are considered
to represent good industry practices.

Based on the site reviews, no data quality
issues have been identified sufficient to affect
the currently designated classification of the
resources.
Underground Resource Estimation

Site visits are regularly conducted by Keith
King, with the most recent being April 2024.
No material issues have been identified as
part of these visits.

The ALS sample preparation laboratory in
Phnom Penh was reviewed on 30 October
2023 by Keith King and no material issues
were identified.

The ALS Assay Laboratory in Vientiane, Laos,
was reviewed on 23 October 2023 by Keith
King and no material issues were identified.

Diamond drilling and RC drilling were being
completed during the site visits. The drilling
and sampling were completed consistent with
good industry practice.

The
core
management
facilities
were
observed and appeared to be organised and
well suited to managing the logging and
sampling procedures efficiently.

Based on the site reviews, no data quality
issues have been identified sufficient to affect
the currently designated classification of the
resources.
Geological
Interpretation
• Confidence in (or conversely, the uncertainty of)
the geological interpretation of the mineral
deposit.
• Nature of the data used and of any assumptions
made.
• The effect, if any, of alternative interpretations
on Mineral Resource estimation.
• The use of geology in guiding and controlling
Mineral Resource estimation.
• The factors affecting continuity both of grade
and geology.
Open Pit Resource Estimation

The mineralisation is hosted within a
Cretaceous diorite intrusion emplaced in a
Triassic metasedimentary package. Gold
grade continuity is best defined along the
traces of planar shears within the diorite that
extend into the metasediments (hornfels).

A wireframe solid of the diorite has been
generated and is used as a control of the
mineralisation constraints. In addition, a
wireframe representing the top of fresh has
also been interpreted by Emerald.

A mineralisation constraint was modelled
based on a cross sectional and flitch
interpretation that was completed by Emerald
using a 0.5gt Au lower cutoff grade. The
interpretation included 2m external dilution
and a maximum 5m internal dilution. This

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Criteria
Explanation Commentary
interpretation was completed applying the
interpreted geological controls.

An indicator kriging estimate was generated
using 1m downhole composites of the drilling
coded with the Emerald mineralisation
interpretation. A grade shell was constructed
using a 0.35 or greater probability threshold
estimated with the indicator kriging. The
grade shell was constrained to within 100m of
the nearest data point in the diorite and 75m
within the hornfels. This grade constraint
ensures the appropriate continuity of the
interpreted zones with the inclusion of
additional
sub-grade
material.
The
mineralisation constraint has been used for
the resource estimation studies.

Alternative grade constraints were generated
by varying the cut-off grade, intercept criteria
and the probability of the indicator estimate.
The
continuity
of
these
alternative
interpretation was variable according to the
chosen parameters and the chosen grade
shell was felt to be the most representative of
the
mineralisation
continuity
and
3D
geometry.
Underground Resource Estimation

The mineralisation is hosted within a
Cretaceous diorite intrusion emplaced in a
Triassic metasedimentary package. Gold
grade continuity is best defined along the
traces of planar shears within the diorite that
extend into the metasediments (hornfels).

Wireframe
solids
representing
each
mineralised structure were created using
implicit vein modelling in Micromine. The
wireframes have been modelled to identify
structures grading 1.5g/t over a minimum
width of 3m, though incorporate lower grade
material
where
appropriate
to
ensure
continuity of the structure.
Dimensions • The extent and variability of the Mineral
Resource expressed as length (along strike or
otherwise), plan width, and depth below surface
to the upper and lower limits of the Mineral
Resource.


The mineralisation has been delineated over a
strike length of approximately 650m, a width
of approximately 500m and to a depth of
650m below surface.
Estimation and
modelling
techniques
• The
nature
and
appropriateness
of
the
estimation
technique(s)
applied
and
key
assumptions, including treatment of extreme
grade
values,
domaining,
interpolation
parameters
and
maximum
distance
of
extrapolation from data points. If a computer
assisted estimation method was chosen, include
a description of computer software and
parameters used.
• The availability of check estimates, previous
estimates and/or mine production records and
whether the Mineral Resource estimate takes
appropriate account of such data.
• The assumptions made regarding recovery of
by-products.
Open Pit Resource Estimation

Multiple Indicator Kriging (MIK) with change
of support to estimate recoverable resources
was
chosen
as
the
most
appropriate
estimation method for the Okvau Open Pit
gold resource.

Secondary
variables
(sulphur,
arsenic,
bismuth, antimony, copper, and tellurium)
have been estimated using Ordinary Kriging
(OK).

The mineralisation domain to constrain
estimation was modelled as described above.
Diorite and hornfels mineralisation have been
estimated separately with soft boundaries
used to limit the sharing of data between the
mineralisation domains.
Underground Resource Estimation

Ordinary Kriging (OK) was chosen an
appropriate estimation method for the Okvau
Underground gold resource.

The mineralisation domain to constrain
estimation was modelled as described above.
Mineralised domains have been estimated
separately with hard boundaries used to
eliminate the sharing of data between the
mineralised domains.

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Criteria
Explanation Commentary
• Estimation of deleterious elements or other
non-grade variables of economic significant (eg
Sulphur
for
acid
mine
drainage
characterization).
• In the case of block model interpolation, the
block size in relation to the average sample
spacing and the search employed.
• Any assumptions behind modelling of selective
mining units.
• Any assumption about correlation between
variables.
• Description of how the geological interpretation
was used to control the resource estimates.
• Discussion of basis for using or not using grade
cutting or capping.
• The process of validation, the checking process
used, the comparison of model data to drillhole
data, and use of reconciliation data if available.
Open Pit Resource Estimation

A downhole composite length of 2m has been
used in estimation.

Variogram model were generated and fitted
for indicator and gold grade variograms.
Separate variography was modelled for
hornfels and diorite.

A parent block size of 20mE x 25mN x 10mRL
was used for grade estimation.

A multiple pass estimation strategy was
applied.

Sample neighbourhood of dimensions of 50m
x 50m x 20m, 100m x 100m x 40m, and 200 x
200mN x 80mRL were used for passes 1, 2 and
3 respectively. The reported resource is
comprised of little of the 3rd estimation pass.

A maximum of 40 and with a minimum of 24
(pass 1) and 12 (passes 2 & 3) composites
have been used in grade estimation. A
maximum number of 8 composites from any
drillhole have been allowed to estimate a
single block.

A
combination
of
soft
and
semi-soft
boundaries were used in grade estimation.
Composites from the adjacent domain (ie
hornfels when estimating diorite and the
reverse) were used for estimation pass 1 (50m
by 50m by 20m). For estimation passes 2 and
3, the adjacent domain composites were
required to be within 40m by 40m by 10m of
the block centroid for estimation. Adjacent
domain composites further than this distance
were excluded.

Composite grades were capped at 25g/t for
the hornfels and 40gt for the diorite fresh
domains and 3gt and 10g/t for the hornfels
and diorite oxide domain respectively.

Density values were assigned based on
lithology and oxidation. The assigned diorite
density for oxide was 1.89t/m³ and 2.87t/m³
for fresh material. The assigned hornfels
density was 1.89t/m3for oxidised rock and
2.78t/m3for fresh material. Any material
grading higher than 0.8g/t has been assigned
a density of 2.95t/m³ due to the massive
sulphides associated with mineralisation, as
observed in core sample bulk density
measurements and from samples taken
during production in the open pit.

The topography surface was generated using
data collected from a UAV (drone) survey
referencing established survey control.

From the MIK panel estimate, a selective
mining unit (SMU) estimate has been
generated based on a 5m by 5m and 5m block
size. This SMU is based on the envisaged
mining practices likely to be employed at
Okvau.

The MIK SMU has been localised to SMU size
blocks for visualisation and mine planning
purposes. s.

Previous resource estimates are available (SRK
2013) and Wolfe (2015). Differences have
been noted estimates in terms of grade,
tonnage and resource classification relative to
the current estimate. The differences are
interpreted to be a result of improved
understanding of the structural controls,
additional drill hole data, differences in the
domaining approach and the estimation
method.

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Criteria
Explanation Commentary

The grade estimates were statistically and
visually validated prior to acceptance.
Underground Resource Estimation

A downhole composite length of 1m has been
used in the Underground resource estimation.

A global variogram model was generated and
fitted for all mineralised domains.

The parent block size within the estimated
domain is 5mN x 5mE x 5mRL, with sub-
blocking to 2.5mN x 2.5mE x 2.5mRL. The
parent block size was chosen based on
mineralised
bodies
dimension
and
orientation, estimation methodology and
relates to the likely method of future
underground production. The search ellipse
was oriented in line with the interpreted
mineralised bodies. Search ellipse dimensions
were chosen to encompass adjacent drillholes
on sections and adjacent lines of drilling
along strike and designed to fully estimate the
mineralised domains.

A multiple pass estimation strategy was
applied.

A maximum search distance of 63m and 157m
were used for passes 1 and 2 respectively.

Input composite counts for the estimates
were variable and set at a minimum of four
and a maximum of 12 data points across a
minimum of two drill holes withing the search
ellipse to estimate a single block for pass 1
(average
distance
between
points
for
estimation of pass 1 is approx. 22m with 84%
of the estimated ounces with an average
distance of less than half the range). This
criterion was relaxed to a minimum of three
data points and a maximum of 8 data points
from a minimum of one hole for pass 2.
(average
distance
between
points
for
estimation of pass 2 is approx. 51m with 88%
of the estimated ounces with an average
distance of less than half the range)

Composite grades were capped at 66g/t for
all mineralised domains.

The assigned density for mineralised domains
is 3.05t/m³. All material for this estimation is
below the current designed pit and is logged
as fresh material. 3.05t/m3has been selected
as the density for mineralised zones as they
have been observed, in drilled samples and in
production, to have a higher density than the
surrounding material due to the massive
sulphides associated with mineralisation.

The topography surface was generated using
data collected from a UAV (drone) survey
referencing established survey control.

The grade estimates were statistically and
visually validated prior to acceptance.
Moisture • Whether the tonnages are estimated on a dry
basis or with natural moisture, and the method
of determination of the moisture content.


Tonnages are estimated on a dry basis, as
described above.
Cut-off
parameters
• The basis of the adopted cut-off grade(s) or
quality parameters applied.
Open Pit Resource Estimation

The resource model has been designed to be
robust for a range of lower cutoff grades
between 0.3gt to 1.0gt. Based on the results
of the Feasibility Study completed by Emerald,
a cut-off of 0.625g/t was chosen as the base
case for reporting Mineral Resources.
Underground Resource Estimation

A 3g/t Au cut-off grade is estimated to be the
minimum grade required for economic
extraction at current metal prices.

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Criteria
Explanation Commentary
Mining factors or
assumptions
• Assumptions made regarding possible mining
methods, minimum mining dimensions and
internal (or, if applicable, extraction) mining
dilution. It is always necessary as part of the
process of determining reasonable prospects
for eventual economic extraction to consider
potential
metallurgical
methods,
but
the
assumptions made regarding mining methods
and parameters when estimating Mineral
Resources may not always be rigorous. Where
this is the case, this should be reported with an
explanation of the basis of the mining
assumptions made.
Open Pit Resource Estimation

The resource model assumes open cut mining
is completed and a moderate to high level of
mining selectivity (SMU dimension of 5mE x
5mN x 5mRL) is achieved in mining. This level
of mining selectivity is consistent with the
grade control approach but mining modifiers
are required to account further for ore loss
and dilution.

It has been assumed that high quality grade
control
will
be
applied
to
ore/waste
delineation processes using RC drilling, or
similar, applying a pattern sufficient to ensure
adequate coverage of the mineralisation
zones.
Underground Resource Estimation

The resource model assumes underground
mining is completed and a moderate to high
level of mining selectivity is achieved in
mining.

It has been assumed that high quality grade
control
will
be
applied
to
ore/waste
delineation processes applying a pattern
sufficient to ensure adequate coverage of the
mineralisation zones.
Metallurgical
factors or
assumptions
• The basis for assumptions or predictions
regarding metallurgical amenability. It is always
necessary as part of the process of determining
reasonable prospects for eventual economic
extraction to consider potential metallurgical
methods, but the assumptions regarding
metallurgical
treatment
processes
and
parameters made when reporting Mineral
Resources may not always be rigorous. Where
this is the case, this should be reported with an
explanation of the basis of the metallurgical
assumptions made.

Renaissance has undertaken several phases of
metallurgical test work at the Bureau Veritas
Minerals Pty Ltd laboratories in Perth,
Western Australia under the management of
Renaissance’s
metallurgical
consultant
Metpro
Consultants
Pty
Ltd.
Further
metallurgical test work has been undertaken
at ALS Metallurgy Pty Ltd laboratories in
Perth, Western Australia under the control of
Emerald
resources
NL.
Utilising
coarse
grinding and flotation, fine grinding of a low
mass concentrate and conventional cyanide
leaching of concentrate and flotation tails the
average LOM gold recovery is estimated to be
84%.
Environmental
factors or
assumptions
• Assumptions made regarding possible waste
and process residue disposal options. It is
always necessary as part of the process of
determining reasonable prospects for eventual
economic extraction to consider the potential
environmental impacts of the mining and
processing option. While at this stage the
determination
of
potential
environmental
impact, particularly for a greenfields project,
may not always be well advanced, the status of
early
consideration
of
these
potential
environmental impacts should be reported.
Where these aspects have not been considered
this should be reported with an explanation of
the environmental assumptions made.

Due to the low relief and reasonably open
topography of the area, and the lack of land
conflict issues, it is assumed that waste and
process residue would not preclude the
project from progressing.

Renaissance has submitted its detailed
Environmental Impact Assessment to the
Ministry of Environment in Cambodia and has
been granted the licences needed to operate
the project.
Bulk density • Whether assumed or determined. If assumed,
the basis for the assumptions. If determined, the
method used, whether wet or dry, the frequency
of the measurements, the nature, size and
representativeness of the samples.
• The bulk density for bulk material must have
been measured by methods that adequately
account for void spaces (vugs, porosity, etc.),
moisture and differences between rock and
alteration zones within the deposit.
• Discuss assumptions for bulk density estimates
used in the evaluation process of the different
materials.

Over 9,000 dry bulk density measurements
were taken from selected core samples and
routine in pit grab samples, measured using
the immersion method.

The measurements have been sub-divided
into fresh and oxidised samples and have also
grouped by lithology.

Based on the above the bulk densities have
been assigned as either 1.89t/m³ or 2.87t/m³
for diorite oxide and fresh respectively and
1.89t/m³ or 2.78t/m³ for hornfels oxide and
fresh respectively. 2.95t/m³ has been selected
as
the
density
for
fresh
high
grade
mineralised zones (>=0.8g/t Au) as they have

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Criteria
Explanation Commentary
been observed to have a higher density than
the surrounding material due to the massive
sulphides associated with mineralisation.

A density of 3.05t/m3 has been selected for
the density of the mineralised zones of the
underground model. In the competent
person’s view, this bulk density is an accurate
representation of the identified mineralised
zones. The bulk density has been derived by
selecting the bulk density measurements that
lay within the interpreted mineralised zones
(1,259 samples).
Classification • The basis for the classification of the Mineral
Resources into varying confidence categories.
• Whether appropriate account has been taken of
all relevant factors (ie. Relative confidence in
tonnage/grade estimations, reliability of input
data, confidence in continuity of geology and
metal values, quality, quantity and distribution
of the data).
• Whether the result appropriately reflects the
Competent Person’s view of the deposit.

Open Pit Resource Estimation

The estimate has been classified as Indicated
and Inferred based on the quality of the data
collected, the density of data, the confidence
of the geological model and mineralisation
model, and the gold grade estimation quality.

Based on these factors, high confidence
estimates that were within approximately
30m or better of drilling and have been
estimated
with
high
confidence
grade
interpolation (generally estimation pass 1, or
within 20m of drilling for estimation pass 2)
were
considered
as
Indicated
Mineral
Resource.

Inferred Mineral Resource blocks were
estimates not considered Indicated Resource
but still within the interpreted mineralisation
zone and within 75m of drilling (when
estimated with pass 1 or 2) or within 40m of
drilling for estimation pass 3.

A
cross
sectional
interpretation
was
completed using criteria listed above and a
wireframe solid produced to capture those
blocks that could be considered as Indicated
and Inferred Resource. Note the wireframes
were constructed such that contiguous zones
of indicated and inferred blocks were
grouped resulting in isolated blocks being
reclassified.

Material classified as Measured, includes
stockpiled ore delineated by grade control
drilling and mined using normal open pit
mining practices.

The
result
appropriately
reflects
the
Competent Person’s view of the deposit.
Underground Resource Estimation

The estimate has been classified as Indicated
and Inferred based on the quality of the data
collected, the density of data, the confidence
of the geological model and mineralisation
model, and the gold grade estimation quality.

Based on these factors, high confidence
estimates that were within estimation pass 1
were
considered
as
Indicated
Mineral
Resource.

Inferred Mineral Resource blocks were
estimates not considered Indicated Resource
but still within the interpreted mineralisation
zone and within estimation pass 2.

The
result
appropriately
reflects
the
Competent Person’s view of the deposit.
Audits or reviews • The results of any audits or reviews of Mineral
Resource estimates.

Open Pit Resource Estimation

No audits or reviews of the Mineral Resource
estimate have taken place. However, previous
estimates
have
been
generated
by
independent consultants.
Underground Resource Estimation

No audits or reviews of the Mineral Resource
estimate have taken place.

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Criteria
Explanation Commentary
Discussion
of
relative
accuracy /
confidence
• Where appropriate, a statement of the relative
accuracy and confidence level in the Mineral
Resource estimate using an approach or
procedure
deemed
appropriate
by
the
Competent Person. For example, the application
of statistical or geostatistical procedures to
quantify the relative accuracy of the resource
within stated confidence limits, or, if such an
approach is not deemed appropriate, a
qualitative discussion of the factors that could
affect the relative accuracy and confidence of
the estimate.
• The statement should specify whether it relates
to global or local estimates, and, if local, state
the relevant tonnages, which should be relevant
to
technical
and
economic
evaluation.
Documentation should include assumptions
made and the procedures used.
• These statement of relative accuracy and
confidence of the estimate should be compared
with production data, where available.

The Mineral Resource is considered to be of
sufficient local confidence to allow mine
planning studies to be completed.

The Indicated and Inferred classifications
assigned locally to the estimation are
considered sufficient to represent the relative
accuracy and confidence. This has been
applied to a relative confidence based on data
density and zone confidence for resource
classification. Material classified as Measured,
includes stockpiled ore delineated by grade
control drilling and mined using normal open
pit mining practices.

No quantitative analysis in confidence limits
has been undertaken.

Production data supports the Open Pit grade
estimate. The resource estimate is consistent
with the grade control estimate. Mining
modifiers are to be applied to the Mineral
Resource for conversion to Ore Reserves.

The Underground Mineral Resource estimate
stated herein does not consider other
modifying factors that might arise out of mine
planning and design such as ore loss, mining
dilution or other mineralised material that
might be mined in order to access stoping
areas
during
general
underground
production activities.

Section 4 Estimation and Reporting of Ore Reserves

(Criteria listed in section 1, and where relevant in sections 2 and 3, also apply to this section.)

Criteria Explanation Commentary
Mineral Resource
estimate
for
conversion to Ore
Reserves
• Description of the Mineral Resource estimate
used as a basis for the conversion to an Ore
Reserve.
• Clear statement as to whether the Mineral
Resources are reported additional to, or
inclusive of, the Ore Reserves.
• The Mineral Resource estimate that forms the
basis for this Ore Reserve Estimate was
completed
by
Brett
Gossage,
Principal
Consultant and Director of EGRM. Mr Gossage is
a geologist with over 33 years’ experience. He is
a Member of the AusIMM.
• The Mineral Resources reported are inclusive of
the Ore Reserves.
Site visits • Comment on any site visits undertaken by the
Competent Person and the outcome of those
visits.
• If no site visits have been undertaken indicate
why this is the case.
• Glenn Williamson has undertaken site visits for
site inspection in support of mine planning and
to coordinate groundwater monitoring studies,
geotechnical drilling, surveying of exploration
drill holes and topographical survey. The visits
contributed to the outcome of the initial Ore
Reserve
estimation
process
and
the
development of the DFS.
Study status • The type and level of study undertaken to
enable Mineral Resources to be converted to
Ore Reserves.
• The Code requires that a study to at least Pre-
Feasibility Study level has been undertaken to
convert Mineral Resources to Ore Reserves.
Such studies will have been carried out and will
have determined a mine plan that is technically
achievable and economically viable, and that
material.
• ModifyingFactors have been considered.
• The study to which this ore reserve estimate and
report applies is an updated ore reserve based
on further exploration drilling and after a two
year period of mining and processing has
occurred. The study has been conducted at a
level necessary to establish that the mine plan is
technically achievable and economic with
modifying factors considered and applied where
appropriate.
Cut-off
parameters
• The basis of the cut-off grade(s) or quality
parameters applied.
• Cut-off grade reported in the Ore Reserve
Statement has been calculated on the basis of a
gold price of US$1,250 per Troy ounce. Mining
recovery and mining dilution have been applied
to the resource model in the MIK resource

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Criteria
Explanation Commentary
estimation stage no additional mining loss or
mining dilution has been applied in the
calculation of the reserve. Metallurgical recovery
has been applied at 84% and costs have been
estimated from quotations or established by
estimation from first principles. The milling and
administration costs have been estimated from
first principles as part of a DFS study and the use
of 84% metallurgical recovery is based on the
results of metallurgical test work.
Mining factors or
assumptions
• The method and assumptions used as reported
in the Pre-Feasibility or Feasibility Study to
convert the Mineral Resource to an Ore Reserve
(i.e. either by application of appropriate factors
by optimisation or by preliminary or detailed
design).
• The choice, nature and appropriateness of the
selected mining method(s) and other mining
parameters including associated design issues
such as pre-strip, access, etc.
• The assumptions made regarding geotechnical
parameters (eg pit slopes, stope sizes, etc),
grade control and pre-production drilling.
• The major assumptions made and Mineral
Resource model used for pit and stope
optimisation (if appropriate).
• The mining dilution factors used.
• The mining recovery factors used.
• Any minimum mining widths used.
• The manner in which Inferred Mineral Resources
are utilised in mining studies and the sensitivity
of the outcome to their inclusion.
• The infrastructure requirements of the selected
mining methods.
• Whittle Optimisation was used to establish the
basic shell on which to base design. Inputs
included cost factors, both quoted earthmoving
and drill and blast costs and estimated
administration and milling costs, pit slopes,
US$1,200 per ounce gold price, mining recovery
(100%) and dilution (0%) and metallurgical
recovery (85%).
• From within the optimal shell, a nested shell was
selected that provided space for cutback and a
basis for evening out the production schedule
for balancing fleet requirements.
• Pit slopes were recommended based on a study
of geotechnical logging of existing exploration
diamond drill holes, 5 geotechnical diamond
drill holes (two of which were drilled in the most
recent resource drilling programme based on
the
recommendation
of
Dr
PM
Dight
(Geotechnical Engineer). An overall pit slope of
52 degrees was applied in optimization and
design closely matched that with slopes
including ramps.
• Minimum mining width has not been applied in
optimization but has been applied to the
resource model as 5mx5mx5m.
• Grade control drilling in advance of mining has
been allowed for at US$25/metre for drilling and
assaying over 17,000,000 cubic metres.
• Inferred material has been included in the
optimization in all runs and excluded from pit
design analysis. No inferred material has been
reported the pit design reported in the Ore
Reserve.
• The mining schedule associated with the Ore
Reserve calls for 2x 120 tonne excavators with
12x90 tonne dump trucks with ancillary gear to
mine the ore and waste at the required rate.
• The mine design has not been substantially
modified
since
the
initial
reserve
was
announced. Production is broadly following the
original schedule and design stages. The
updated reserve takes account of an updated
resource estimate and mining depletion withing
the original design.
Metallurgical
factors
or
assumptions
• The metallurgical process proposed and the
appropriateness of that process to the style of
mineralisation.
• Whether the metallurgical process is well-tested
technology or novel in nature.
• The nature, amount and representativeness of
metallurgical test work undertaken, the nature
of the metallurgical domaining applied and the
• The metallurgical process proposed is CIL in
association
with
flotation
to
process
arsenopyrite and antimony which occurs in
association with the gold mineralisation. The
process is established and used by a number of
gold producers successfully.
• A total of 6 metallurgical holes were drilled in
two
passes
for
metallurgical
testing.
Compositingof samples was done bylevel to

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Criteria
Explanation Commentary
corresponding metallurgical recovery factors
applied.
• Any assumptions or allowances made for
deleterious elements.
• The existence of any bulk sample or pilot scale
test work and the degree to which such
samples are considered representative of the
orebody as a whole.
• For minerals that are defined by a specification,
has the ore reserve estimation been based on
the appropriate mineralogy to meet the
specifications?
simulate process feed for the holes drilled in the
second pass.
• Metallurgical recovery has been applied at 84%
in accordance with instruction and the results of
test work. No further allowance has been made
for deleterious elements.
• Metallurgical
recovery
demonstrated
by
operations to date is approaching that indicated
by test work with progressive adjustments being
made to the metallurgical circuit.
• No recoverable minerals are defined by
specification in this case.
Environmental • The status of studies of potential environmental
impacts
of
the
mining
and
processing
operation. Details of waste rock characterisation
and the consideration of potential sites, status
of design options considered and, where
applicable, the status of approvals for process
residue storage and waste dumps should be
reported.
• Project approval has been obtained and the
project is now in operation in compliance with
environmental requirements.
• Environmental studies are ongoing for the
Okvau Project with environmental impact and
mitigation strategies and costs having been
established. Waste rock storage and a tailings
storage facility are established and in operation.
Waste rock characterization studies have been
undertaken and contributed to design and
costing in all phases of Earthmoving, Operations
and Closureplanning.
Infrastructure • The existence of appropriate infrastructure:
availability of land for plant development,
power, water, transportation (particularly for
bulk commodities), labour, accommodation; or
the ease with which the infrastructure can be
provided,or accessed.
• All required infrastructure is now in existence at
the site in support of ongoing operations.
Costs
The derivation of, or assumptions made,
regarding projected capital costs in the study.

The methodology used to estimate operating
costs.

Allowances
made
for
the
content
of
deleterious elements.

The source of exchange rates used in the
study.

Derivation of transportation charges.

The basis for forecasting or source of
treatment and refining charges, penalties for
failure to meet specification, etc.

The allowances made for royalties payable,
both Government and private.
• All startup capital required for ongoing
operations has been spent and only minor
sustaining capital to be budgeted from cash flow
is required for mining of remaining reserve.
• Deleterious elements such as arsenic and
tellurides occur in the deposit. The effect of
these on recovery has been indicated by
metallurgical test work. The environmental
impact of these minerals in the TSF and Waste
Storage areas has been studied and mitigation
of the effect of them has been considered in DFS
design and costing
• Operating costs have, in the case of mining,
been quoted by a mining contractor for drill and
blast and load and haul. In-house first principles
estimates have been made by Emerald as part of
a DFS for other costs. All costs have been quoted
or estimated in US$. Adjustment to costs have
been made for inflation (rise and fall) in
succeeding
budgets
following
project
commencement.
• No allowance for royalties was made in the Ore
Reserve estimation but royalties have been
accounted for subsequently in the detailed
financial modelling in the DFS and succeeding
budgets.
• Transportation charges in relation to mining
have been accounted for in contract rates
quoted for load and haul and drill and blast. Fuel
costs take account of delivery to site as do
milling costs for consumables.
• No allowance has been made for refining
charges ongold sales in the Ore Reserve study
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Criteria
Explanation Commentary
but has been accounted for in the financial
model and succeedingbudgets.
Revenue factors
The derivation of, or assumptions made
regarding revenue factors including head
grade, metal or commodity price(s) exchange
rates, transportation and treatment charges,
penalties, net smelter returns, etc.

The derivation of assumptions made of metal
or commodity price(s), for the principal
metals, minerals and co-products.
• Head grade of gold ore has been estimated by
inclusion of dilution within the block model used
as the resource model. Blocks within the
resource model have been created at 5 metre x
5 metre x 5 metre SMU size and allow for mining
dilution in the reported grade, influenced by the
geology and surrounding grades.
• Gold price of US$1,250 per troy ounce was
applied in previous Ore Reserve Analysis.
Historically this price has been exceeded for a
period of years. The same price has been used
on this occasion for consistency.
Market
assessment

The demand, supply and stock situation for
the
particular
commodity,
consumption
trends and factors likely to affect supply and
demand into the future.

A customer and competitor analysis along
with the identification of likely market
windows for the product.

Price and volume forecasts and the basis for
these forecasts.

For
industrial
minerals
the
customer
specification,
testing
and
acceptance
requirements prior to a supply contract.
• The gold market has been strong over a
reasonable period of time and the gold price
used in the study has been exceeded over 7 of
the last 10 years. At the time of this study the
gold price has been in the order of US$1,950 per
troy ounce.
• Gold supply has averaged 4,000t/annum over
the last 10 years and demand has been
consistent with about 66% derived from mining
and 34% from recycling.
• It has been assumed that supply and demand for
gold will continue on the same average basis.
Economic
The demand, supply and stock situation for
the
particular
commodity,
consumption
trends and factors likely to affect supply and
demand into the future.

A customer and competitor analysis along
with the identification of likely market
windows for the product.

Price and volume forecasts and the basis for
these forecasts.

For
industrial
minerals
the
customer
specification,
testing
and
acceptance
requirements prior to a supply contract.

The inputs to the economic analysis to
produce the net present value (NPV) in the
study, the source and confidence of these
economic
inputs
including
estimated
inflation, discount rate, etc.

NPV ranges and sensitivity to variations in the
significant assumptions and inputs.
• The project was developed on the following
basis:
• A coarse NPV was calculated using DFS
estimated Capital of US$98 million and a
discount rate of 5%. Cash flows were allowance
for all capital to be spent in year 1 and all mining
and processing costs expended on a flat floor
basis based on 2,000,000 tonnes per annum
processing with associated income from gold
sales at $1,250/troy ounce. This showed an NPV
of about US$245 million over 9 years of the
project from commencement of construction
based on a static net income total of US$375
million.
• Analysis of sensitivities was conducted on the
Whittle shell selected for design.
• Financial modelling of NPV and IRR was
conducted with sensitivity estimates in the DFS.
• Remodelling of economic analysis has been
conducted for each yearly budget since project
commencement.
Social
The
status
of
agreements
with
key
stakeholders and matters leading to social
licence to operate.
• Consultation with stakeholders at local district
and provincial levels has been ongoing since the
baseline studies commenced a number of years
ago. A comprehensive, government approved
Environmental and Social Impact Assessment
(ESIA) has governed the operations successfully
for over threeyears.
Other
To the extent relevant, the impact of the
following on the project and/or on the
estimation and classification of the Ore
Reserves:

Any identified material naturally occurring
risks.

The status of material legal agreements and
marketing arrangements.

The status of governmental agreements and
approvals critical to the viability of the
• Flooding is a material risk to the pit in
operations. A substantial waste bund has been
constructed to exclude flood waters and
mitigate the risk.
• Emerald has received all material approvals and
licences necessary to operate the project.
• Emerald has a government approved Industrial
Mining Licence over a project area of
approximately11km2within the existingOkvau
Page 27 of 28
ASX Announcement& Media
Release
~~29 April 2022~~
ASX Announcement& Media
Release
~~29 April 2022~~

Criteria
Explanation Commentary
project, such as mineral tenement status, and
government and statutory approvals. There
must be reasonable grounds to expect that all
necessary Government approvals will be
received within the timeframes anticipated in
the
Pre-Feasibility
or
Feasibility
study.
Highlight and discuss the materiality of any
unresolved matter that is dependent on a
third party on which extraction of the reserve
is contingent.
Exploration Licence and government approved
ESIA and Mineral Investment Agreement which
governs the operations.
Classification

The basis for the classification of the Ore
Reserves into varying confidence categories.

Whether the result appropriately reflects the
Competent Person’s view of the deposit.

The proportion of Probable Ore Reserves that
have been derived from Measured Mineral
Resources (if any).
• No Measured Mineral Resources existed in the
resource model and all Probable Ore Reserves
have been derived from Indicated Mineral
Resources.
• The results of classification accurately reflect
independent specialist mining consultant, Mr
Glenn Williamson’s view of theproject.
Audits or reviews
The results of any audits or reviews of Ore
Reserve estimates.
• No audit has been conducted of the Ore Reserve
estimate
Discussion
of
relative accuracy/
confidence

Where appropriate a statement of the relative
accuracy and confidence level in the Ore
Reserve estimate using an approach or
procedure deemed appropriate by the
Competent
Person.
For
example,
the
application of statistical or geostatistical
procedures to quantify the relative accuracy
of the reserve within stated confidence limits,
or, if such an approach is not deemed
appropriate, a qualitative discussion of the
factors which could affect the relative
accuracy and confidence of the estimate.

The statement should specify whether it
relates to global or local estimates, and, if
local, state the relevant tonnages, which
should be relevant to technical and economic
evaluation. Documentation should include
assumptions made and the procedures used.

Accuracy and confidence discussions should
extend to specific discussions of any applied
Modifying Factors that may have a material
impact on Ore Reserve viability, or for which
there are remaining areas of uncertainty at
the current study stage.

It is recognised that this may not be possible
or appropriate in all

circumstances. These statements of relative
accuracy and confidence of the estimate
should be compared with production data,
where available.
• The grade estimates were statistically and
visually validated prior to acceptance in the
resource estimation process.
• Reconciliation of production against reserve
shows a close comparison.
• The Probable Ore Reserve which is the subject
of the Ore Reserve Statement and DFS is based
on an Indicated Mineral Resource where the
confidence level is less than confidence would
be in a Measured Mineral Resource. Confidence
in the associated cost estimates is of a high level
with those aspects having been estimated from
first principles. Confidence in metallurgical
recovery, and mining dilution and loss aspects is
moderate, with those aspects having been
operationally
tested.
The
overall
global
confidence in the Probable Ore Reserve is less
than for a Proved Ore Reserve.

Page 28 of 28