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Celsius Resources Limited Capital/Financing Update 2025

Nov 23, 2025

10450_rns_2025-11-23_876396d1-14e9-496d-ab00-873af434d1a4.pdf

Capital/Financing Update

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ASX/AIM RELEASE

24 November 2025

Updated MCB Mineral Resource Estimate

HIGHLIGHTS:

  • Global Mineral Resource of 343Mt @ 0.46% Copper and 0.12g/t gold (0.2% Cu cut-off)

  • 1.6 million tonnes of contained copper and 1.4 million ounces of contained gold

  • Measured category of 49Mt @ 0.60% Cu and 0.19g/t Au (0.2% Cu cut-off)

  • Total high-grade core of (0.5% copper cut-off) of 99 million tonnes @ 0.79% copper and 0.24g/t gold in the Measured and Indicated category

  • Overall, the 2025 MRE has an additional 5Mt containing 14kt total copper compared with the 2022 MRE


Celsius Resources Limited ( “Celsius” or “the Company” ) ( ASX,AIM:CLA ) is pleased to announce an updated JORC compliant Mineral Resource Estimate (“MRE”) for the Maalinao-Caigutan-Biyog Copper-Gold Project (“Project” or “MCB”), held under its Philippine Affiliate Company, Makilala Mining Co., Inc. (“ MMCI” ) and located at the Island of Luzon in the Philippines (Figure 1).

The Global MRE is now 343 Mt of 0.46% copper, and 0.12g/t gold, for a total of 1.6 Mt of contained copper and 1.4 Moz of contained gold reported to a preferred lower cutoff grade of 0.2% copper.

The drilling during 2022[1] and 2025[2] was all within the boundaries of the prior Resource estimates for MCB (Released in 2021[3] and 2022[4] . The drilling activity was to obtain samples for a metallurgical test work program to determine recoveries from years one (1) to five (5) of the mine life along with further geotechnical investigation of the

1 ASX announcement 19 October 2022, 4 October 2022, 3 August 2022, 4 July 2022 and 23 May 2022

2 ASX/AIM announcement 6 October 2025

3 ASX announcement 12 January 2021

4 ASX announcement 12 December 2022

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Level 5, 191 St. Georges Terrace, Perth WA 6000 PO Box 7059, Cloisters Square PO, Perth WA 6850 P : +61 8 9324 4516 E : [email protected] W : celsiusresources.com

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underground drilling to support an updated underground mine plan. This has allowed for an increase in the confidence level to the Measured category in addition to a refinement of the boundaries to the Mineral Resource. This revised MRE is being utilised for the delivery of the JORC mining reserve along with further increased confidence in the mine plan which will be included in the updated Feasibility Study and the front-end engineering (“FEED”) due for release in December 2025.

Celsius has a 40% working interest in MCB. As announced on 20 March 2023 CLA has conditionally agreed to transfer a 60% working interest in MCB to Sodor, Inc, subject to certain conditions, which remain outstanding.

Makilala Technical Director Peter Hume said:

“While the focus of the recent drilling program was established to support the updating of the Feasibility Study and the FEED program, we were pleasantly surprised with further high-grade results.”

These results, along with the recently announced recoveries, will further underpin the MCB Project’s economic viability and will be the basis of the JORC mining reserve which is part of the updated Feasibility Study and FEED work program”

Table 1. Summary results for the updated MRE at MCB at a cut-off grade of 0.20% copper.

Classification Domain Tonnes
(Mt)
Copper Grade
(%)
Gold Grade
(g/t)
Copper Metal
(kt)
Gold Metal
(koz)
Type 1HGV 13 1.15 0.50 145 202
Measured Type 1HGH 4 0.72 0.10 32 14
Type 3LG 32 0.37 0.08 119 84
Totals 49 0.60 0.19 296 300
Type 1HGV 48 0.66 0.28 316 433
Indicated Type 1HGH 11 0.79 0.12 83 41
Type 3LG 190 0.35 0.07 674 438
Totals 248 0.43 0.11 1,072 913
Inferred Type 1HGV 19 0.50 0.12 94 72
Type 1HGH 0.1 0.80 0.14 0.5 0.3
Type 3LG 26 0.49 0.08 129 71
Totals 45 0.49 0.10 224 143
Type 1HGV 79 0.70 0.28 554 708
Total Type 1HGH 15 0.77 0.11 115 55
Type 3LG 248 0.37 0.07 922 593
Totals 343 0.46 0.12 1,592 1,356

Note for table of results: Estimates have been rounded to the nearest Mt of ore, two significant figures for Cu and Au grade and to the nearest kt of Cu metal and koz of Au metal. Some apparent errors may occur due to rounding. The MCB Project is an affiliate company of Celsius and MMCI will be the operator of the MCB Project.

Changes to the MCB Mineral Resource Estimate

The 2025 MRE incorporates drilling completed by MMCI since late 2022, which has significantly improved confidence in the resource. Additional drilling has strengthened

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the definition of the Measured category by confirming the continuity of copper mineralisation in key areas.

Recent drilling has also refined the boundaries of the mineralised zones and provided a clearer understanding of the orientation and continuity of higher-grade domains (Type 1HGV). Additional diamond drilling has further defined the shallow high-grade copper mineralisation (Type 1HGH), resulting in improved grade distribution at higher cut-off grades. Overall, the 2025 MRE has an additional 5Mt containing 14kt total copper compared with the 2022 MRE.

The weathering model has also been updated, improving the definition of shallow weathered material. This refined model removes the Inferred category in weathered zones, providing more confidence in these near-surface tonnes. With potential for future mining and processing of this material, the weathered copper mineralisation has been retained within the updated MCB MRE.

Table 2. Comparison between the November 2025 Mineral Resource and the 2022 Mineral Resource at a cut-off grade of 0.20% copper.

MRE Classificati
on
Tonnes
(Mt)
Copper Grade
(%)
Gold Grade
(g/t)
Copper Metal
(kt)
Gold Metal
(koz)
Dec-
22
Measured 47 0.59 0.19 275 282
Indicated 249 0.44 0.11 1,085 904
Inferred 42 0.52 0.11 219 154
Totals 338 0.47 0.12 1,578 1,340
Nov-
25
Measured 49 0.60 0.19 296 300
Indicated 248 0.43 0.11 1,072 913
Inferred 45 0.49 0.10 224 143
Totals 343 0.46 0.12 1,592 1,356

Note for table of results: Estimates have been rounded to the nearest Mt of ore, two significant figures for Cu and Au grade and to the nearest kt of Cu metal and koz of Au metal. Some apparent errors may occur due to rounding.

MCB COPPER-GOLD PROJECT

The MCB Copper-Gold Project (MCB) is located in the Cordillera Administrative Region in the Philippines, approximately 320km north of Manila. It is the flagship project within the Celsius portfolio which also contains other key prospects in the pipeline for permit renewal/extension.

The updated JORC compliant Mineral Resource Estimate (subject of this release) for the MCB Project is 343 million tonnes @ 0.46% copper and 0.12 g/t gold, for a total of 1.6 million tonnes of contained copper and 1.4 million ounces of gold, of which 45 million tonnes @ 0.49% copper and 0.10 g/t gold is classified as Inferred, 248 million tonnes @ 0.43% copper and 0.11 g/t gold is classified as Indicated, and 49 million tonnes @ 0.60% copper and 0.19 g/t gold is classified as Measured.

A Study for the MCB Project was announced by CLA on 1 December 2021, which identified the potential for the development of a copper-gold operation with a 25-year mine life. The Study was based on an underground mining operation and processing facility to produce a saleable copper-gold concentrate.

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Highlights from the Study include a Post tax NPV (8%) of US$464m and IRR of 31%, assuming a copper price of US$4.00/lb and gold price of US$1,695/oz. Initial capital expenditure is estimated to be US$253m with a payback period of approximately 2.7 years. The designed mine production is matched to a 2.28Mtpa processing plant which will treat ore with an estimated average grade of 1.14% copper and 0.54g/t gold for the first 10 years of planned production with a C1[5] cash costs at just US$0.73/lb copper, net of gold credits. As at the date of this announcement there are studies ongoing to update the Feasibility Study for the MCB Project which are scheduled for completion by December 2025.

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Figure 1. Location of the MCB Project in the province of Kalinga, Northern Luzon, Philippines.

5 C1 costs include all direct costs in mining, processing, general and administration, and selling (including freight).

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Figure 2. Location of MCB Exploration Tenement area and associated drilling related to the reported MRE.

Location

The MCB Project is located in Barangay Balatoc, Municipality of Pasil, Province of Kalinga. At the Project area settlements are generally small, compact and occupy a limited area within the main Barangay of Balatoc. The closest major centre is the city of Tabuk which is approximately a 3 hour drive from the Project location.

The Exploration Tenement EP-003-2006-CAR was originally approved in 2006 and had its 3rd renewal approved by the Mines and Geosciences Bureau (“MGB”) on 19 November 2020[6] . The Exploration Permit was extended on 31 March 2022 until May 2023. The MGB issued the Mineral Production Sharing Agreement (MPSA-356-2024CAR) to MMCI on 15 March 2024[7] .

Geology and Geological Interpretation

The geological interpretations and technical information that have contributed to the 2025 MRE at MCB are based largely on surface mapping and analysis of 60 diamond drill holes (31,616.20 m) completed by Makilala Mining (MMCI) from 2006 to 2025.

6 ASX announcement 24 November 2020

7 ASX/AIM announcement 18 March 2024

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Drilling at MCB has broadly defined a large-scale copper mineralisation interpreted to be a typical porphyry copper style of mineralisation, common throughout the Philippine archipelago.

The mineralisation and associated alteration exist across the contact between a genetically related intrusive body (tonalite) and the surrounding host rock material. In most cases the surrounding host rock is an older mafic volcanic rock (see Figures 3 to 5).

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Figure 3. MCB Project drill hole locations and interpreted surface geological plan view diagram

The location and trend of the copper-gold mineralisation is influenced by two dominant structural trends that exist at MCB. The broad fabric and trend of the intrusive bodies and associated alteration extends in a north-east direction, or at approximately 050 degrees with a near to vertical dip. This orientation is also parallel to some major faulting.

The broad copper-gold domains as defined by the MCB MRE were defined based on the continuous zones of copper and gold mineralisation which coincides with the controlling geological host rocks, structures, and alteration features.

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Figure 4. Section 1 with the interpreted host rock geology relative to the defined copper mineralised domains. Drill holes completed after the 2022 Mineral Resource Estimate on this cross section are identified (holes MCB-042, MCB-043, MTPH-001, and MCB-UG-002). View looking Northeast[8] .

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Figure 5. Section 2 with the interpreted host rock geology relative to the defined copper mineralised domains. Drill hole completed after the 2022 Mineral Resource Estimate on this cross section is identified (MCB-UG-001). View looking Northeast.

8 ASX/AIM announcement 15 September 2025, 6 October 2025 and 28 February 2023

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There is also evidence at MCB for epithermal vein deposit types exist within close proximity to the large-scale porphyry copper-gold mineralisation. At this stage the only deposit type that is defined in the MRE for MCB is a porphyry copper-gold style.

Drilling Techniques

The MRE was defined using diamond drill holes, which was the preferred drilling method in MCB. Drilling was completed over two broad stages. The first stage was managed by the previous owner of MMCI, Freeport McMoRan, with a total of 25,481 metres from 46 drill holes completed within December 2006 to July 2013. The second drilling program was implemented by MMCI, with a total of 6,135.2 meters from 14 drill holes completed from 2021 to 2025. All diamond drilling utilised a triple tube core barrel for the entire length to ensure maximum sample recovery.

Sampling and Sub-sampling Techniques

Half core samples were collected from diamond holes drilled from the surface. All drill cores were generally sampled at 2m intervals. In cases where geological and mineralogical characteristics change, the sample length is reduced to best fit the geological contact. The minimum observed sample size is one metre. Sampling typically commenced after the overburden horizon.

The following sub sampling and sample preparations were observed for all the diamond drilling at MCB.

  • A. Drying and Weighing: Samples were weighed, dried in an oven at 105 Celsius for 6 to 8 hours. For samples with high clay content, drying time is extended up to 16 hours. After drying, samples were weighed again to calculate the moisture content.

  • B. Crushing: Samples were then primary crushed to a size of <4mm. Using a Boyd crusher, secondary crushing produces <2mm product size. The 1kg crushed material is retained for final preparation.

  • C. Pulverizing: The 1kg split is pulverized to -200 mesh with a grinding time of 4 to 6 minutes for 1kg ground samples.

  • D. Splitting: 1kg sample is split successively to obtain four samples of 250 grams each. Out of the four pulp samples, one sample is being dispatched to the laboratory analysis while the pulp samples are retained to be used later for duplicate assays and inter-laboratory checks.

Sample Analysis Method

All drill samples were prepared and sent to Intertek in Manila, an internationally recognised and ISO-accredited independent laboratory. Gold was analysed using fireassay methods, while copper and other elements were tested using industry-standard multi-element analytical techniques.

Assay procedures have evolved across the two drilling programs (2007–2013 and 2021– 2025), with more recent drilling using updated multi-element, four-acid digestion methods to ensure accurate copper results. Higher-precision analytical methods were

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used whenever copper values exceeded standard detection limits to ensure the most reliable grades were reported.

Quality control procedures were rigorously followed, with standards and blanks included in nearly 10% of all samples. Independent checks of the laboratory data confirmed no material issues, ensuring the assay results used in the MCB MRE are accurate and reliable.

Estimation Methodology

Based on the general dimensions of the interpreted ore domains, and the likely mining method, a parent cell block size of 10m x 10m x 10m was chosen for the MRE.

Basic statistical information and variogram analysis was reviewed for both copper and gold within the various defined high grade and low-grade domains. The interpreted domains of Type 1HGH, Type 1HGV and Type 3LG were the only 3 domains that were considered to have sufficient data distributed to provide a basis for the use of a more sophisticated interpolation method such as Ordinary Kriging. The parameters for the Ordinary Kriging were based on an analysis of the variograms for each domain. The variograms (defined within the Leapfrog Edge software package) were located along the plane of the interpreted controlling geological trend which is striking at 050 degrees at a near vertical dip.

A broad review of the statistics for each domain did not identify significant high value outliers that are considered likely to result in an overestimated either locally or globally to the grade distribution within the block model. Therefore, no top cut was applied to the MRE.

Classification Criteria

The Measured portion of the Mineral Resource was generated after the completion of additional drilling results completed during 2022 and 2025. The criteria for the Measured Mineral Resource were based on the first pass interpolation for each domain. This first pass was based on a search of ellipse parameters with a maximum distance of the Sill distance as defined by the variography for each domain. Minimum selection criteria for the Measured criteria also included a minimum of 8 samples from at least 2 drill holes and a maximum total of 18 samples derived from the 2m composited data.

The Indicated Resource for the MCB model was based on a second pass which was defined by a search distance which is~1.5x the Sill distance based off the variogram analysis for each domain. The additional selection criteria for the Indicated category included minimum number of samples of 4 and a maximum of 20 samples derived from the 2m composited data.

The Inferred Mineral Resource was extended for twice the distances applied to the Indicated Mineral Resource using a minimum of 2 samples and maximum of 10 samples defined for each block. No restriction on the number of drill holes was applied for the Indicated and Inferred Mineral Resource category.

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Cut-off Grade

A preferred lower cut-off grade of 0.2% copper has been used in the reported MRE. This is considered appropriate based on the geological continuity associated with copper mineralisation above 0.2% copper in addition to a broad economic cut-off point based on a US$5.00/lb copper price.

Dimensions

The copper-gold mineralisation at MCB is classified as a porphyry copper-gold deposit which at deeper levels (below 400m depth) has a broad geometry of up to 1km along strike towards the north-east and true widths of up to 280m. At shallower levels, the copper mineralisation is broken up into multiple domains which are individually up to 600m along strike and with true widths of up to 150m.

Metallurgical and Mining Parameters

Metallurgical test work was undertaken by MMCI for multiple defined ore types and over the most common grade ranges considered applicable to a potential mining operation at the MCB deposit. The results highlighted the potential for good recoveries of both copper and gold into a saleable copper-gold concentrate with average recoveries of approximately 95% for copper and 77% for gold (see CLA announcement dated 11 November 2025).

Benchmark mining costs of US$16/t and processing costs of US$10/t respectively for a medium sized (2.25Mt per annum) underground sublevel open stoping mining method and processing using conventional floatation to produce a copper-gold concentrate have been assumed where applicable for the MRE. This cost range estimate matches closely with a broad geological cut-off grade of between 0.2% copper and 0.25% copper (at a Copper Price of US$5/lb).

Table of Results

The table below identify the results from the block model at various higher cut-off grades up to 0.5% copper. The ranges identified in these tables define the range of copper cut-off grades on the possible mining options.

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Table 3. Summary results for the updated MRE at MCB at a cut-off grade of 0.3% copper.

Classification Domain Tonnes
(Mt)
Copper Grade
(%)
Gold Grade
(g/t)
Copper Metal
(kt)
Gold Metal
(koz)
Measured Type 1HGV 12 1.16 0.51 144 202
Type 1HGH 4 0.73 0.10 32 13
Type 3LG 22 0.43 0.09 93 64
Totals 38 0.70 0.23 269 280
Indicated Type 1HGV 45 0.69 0.29 308 423
Type 1HGH 11 0.79 0.12 83 41
Type 3LG 113 0.42 0.08 476 275
Totals 168 0.52 0.14 867 739
Inferred Type 1HGV 18 0.51 0.12 90 70
Type 1HGH 0.1 0.80 0.14 0.5 0.3
Type 3LG 19 0.58 0.10 107 58
Totals 36 0.55 0.11 198 128
Total Type 1HGV 75 0.73 0.29 542 694
Type 1HGH 15 0.77 0.11 115 55
Type 3LG 153 0.44 0.08 676 397
Totals 242 0.55 0.15 1,334 1,146

Table 4. Summary results for the updated MRE at MCB at a cut-off grade of 0.4% copper.

Classification Domain Tonnes
(Mt)
Copper Grade
(%)
Gold Grade
(g/t)
Copper Metal
(kt)
Gold Metal
(koz)
Measured Type 1HGV 11 1.23 0.55 140 200
Type 1HGH 4 0.75 0.10 31 13
Type 3LG 10 0.52 0.11 53 36
Totals 26 0.87 0.30 225 249
Indicated Type 1HGV 37 0.75 0.32 282 389
Type 1HGH 10 0.81 0.12 82 41
Type 3LG 52 0.51 0.08 267 134
Totals 100 0.63 0.18 630 564
Inferred Type 1HGV 13 0.58 0.15 73 59
Type 1HGH 0.1 0.80 0.14 0.5 0.3
Type 3LG 17 0.59 0.10 103 56
Totals 30 0.59 0.12 177 115
Total Type 1HGV 61 0.81 0.33 495 648
Type 1HGH 14 0.79 0.12 113 54
Type 3LG 80 0.53 0.09 424 227
Totals 155 0.66 0.19 1,032 928

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Table 5. Summary results for the updated MRE at MCB at a cut-off grade of 0.5% copper.

Classification Domain Tonnes
(Mt)
Copper Grade
(%)
Gold Grade
(g/t)
Copper Metal
(kt)
Gold Metal
(koz)
Measured Type 1HGV 10 1.32 0.60 136 197
Type 1HGH 4 0.80 0.10 28 11
Type 3LG 4 0.64 0.13 26 17
Totals 18 1.06 0.39 190 226
Indicated Type 1HGV 29 0.84 0.38 242 346
Type 1HGH 9 0.83 0.13 79 38
Type 3LG 20 0.62 0.08 126 56
Totals 59 0.76 0.23 447 440
Inferred Type 1HGV 7 0.67 0.18 48 42
Type 1HGH 0.1 0.80 0.14 0.5 0.3
Type 3LG 15 0.61 0.10 93 50
Totals 22 0.63 0.13 142 92
Total Type 1HGV 46 0.92 0.40 425 585
Type 1HGH 13 0.82 0.12 108 50
Type 3LG 40 0.62 0.10 246 123
Totals 99 0.79 0.24 778 758

Note for table of results: Estimates have been rounded to the nearest Mt of ore, two significant figures for Cu and Au grade and to the nearest kt of Cu metal and koz of Au metal. Some apparent errors may occur due to rounding.

This announcement has been authorised by the Board of Directors of Celsius Resources Limited.

The information contained within this announcement is deemed by the Company to constitute inside information as stipulated under the Market Abuse Regulations (EU) No. 596/2014 as it forms part of UK Domestic Law by virtue of the European Union (Withdrawal) Act 2018.

Listing Rule 5.23 Disclosure

The Company confirms that it is not aware of any new information or data that relates to previously reported Exploration Results and Mineral Resources at the MCB Project. In respect of previously reported Mineral Resource estimates, apart from additional data that has been used in the current 2025 MRE update, the subject of this report, all originally reported material assumptions and technical parameters underpinning the estimates continue to apply and have not been materially changed or qualified. The form and context in which the relevant Competent Person’s findings are presented have not been materially modified from the original document.

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Competent Person Statement

Information in this report relating to Exploration Results is based on information compiled, reviewed and assessed by Mr. Steven Olsen, who is a Member of the Australasian Institute of Mining and Metallurgy and the Australian Institute of Geoscientists. Mr. Olsen is a consultant to Celsius Resources and 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 as defined by the 2012 Edition of the Australasian Code for reporting of Exploration Results, Mineral Resources and Ore Reserves. Mr. Olsen is also considered a Qualified Person for the purposes of the AIM Rules. Mr. Olsen consents to the inclusion of the data in the form and context in which it appears.

Definitions

Definitions
Cut-off Grade The minimum grade of a mineralised material considered economically viable to process.
For this announcement, a preferred lower cut-off grade of 0.2% copper has been applied,
consistent with industry practice and economic assumptions.
Feasibility Study A comprehensive technical and economic assessment conducted to determine the viability
of a proposed mining project. The feasibility study evaluates all key aspects of the project,
including geology, mineral resources, mining methods, processing, infrastructure,
environmental and social impacts, capital and operating costs, and financial returns. Its
purpose is to provide sufficient detail and confidence to support a final investment decision
and project financing. The outcomes of a feasibility study typically include detailed
engineering designs, cost estimates, implementation schedules, and risk assessments.
Front-End
Engineering
Design (FEED)
A detailed engineering phase undertaken prior to the commencement of project
construction, during which the technical requirements, design specifications, cost
estimates, and project execution plans are developed. In mining, FEED typically includes
studies of process flows, plant layout, equipment selection, infrastructure, and
environmental considerations. The FEED process provides the basis for final investment
decisions and forms the foundation for subsequent detailed engineering, procurement,
and construction activities
Indicated Mineral
Resource
The part of a Mineral Resource for which quantity, grade or quality, densities, shape, and
physical characteristics are sufficiently well established to allow for a reasonable level of
confidence in the estimate, but not as high as for Measured Resources.
Inferred Mineral
Resource
The part of a Mineral Resource for which quantity and grade or quality are estimated on the
basis of limited geological evidence and sampling, resulting in a lower level of confidence.
Measured Mineral
Resource
The part of a Mineral Resource for which quantity, grade or quality, densities, shape, and
physical characteristics are so well established that they can be estimated with confidence
sufficient to allow for detailed mine planning.

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Mineral Resource
Estimate/MRE
The estimate of mineral resources as calculated and presented in accordance with a
minerals code or standard
Mineral Resource A concentration or occurrence of solid material of economic interest in or on the earth’s
crust in such form, grade (or quality), and quantity that there are reasonable prospects for
eventual economic extraction. The location, quantity, grade (or quality), continuity and
other geological characteristics of a Mineral Resource are known, estimated or interpreted
from specific geological evidence and knowledge, including sampling. Mineral Resources
are sub-divided, in order of increasing geological confidence, into Inferred, Indicated and
Measured categories
Type 1HGV Vertically oriented high-grade copper mineralisation, following geological contacts
Type 1HGH Shallow, flat-lying high-grade copper mineralisation, near-surface
Type 3LG Broad zones of mineralisation with copper grades generally below high-grade thresholds,
modelled for continuity and tonnage estimation

Forward Looking Statements

Some of the statements appearing in this announcement may be in the nature of forward-looking statements. You should be aware that such statements are only predictions and are subject to inherent risks and uncertainties. Those risks and uncertainties include factors and risks specific to the industries in which the Company operates and proposes to operate as well as general economic conditions, prevailing exchange rates and interest rates and conditions in the financial markets, among other things. Actual events or results may differ materially from the events or results expressed or implied in any forward-looking statement.

No forward-looking statement is a guarantee or representation as to future performance or any other future matters, which will be influenced by a number of factors and subject to various uncertainties and contingencies, many of which will be outside the Company’s control.

The Company does not undertake any obligation to update publicly or release any revisions to these forward-looking statements to reflect events or circumstances after today's date or to reflect the occurrence of unanticipated events. No representation or warranty, express or implied, is made as to the fairness, accuracy, completeness or correctness of the information, opinions or conclusions contained in this announcement. To the maximum extent permitted by law, none of the Company’s Directors, employees, advisors, or agents, nor any other person, accepts any liability for any loss arising from the use of the information contained in this announcement. You are cautioned not to place undue reliance on any forward-looking statement. The forward-looking statements in this announcement reflect views held only as at the date of this

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announcement. As at the date of this announcement there are studies ongoing to update the Feasibility Study for the MCB Project which are scheduled for completion by December 2025.

Celsius Resources Contact Information

Level 5, 191 St. Georges Terrace Perth WA 6000

PO Box 7059 Cloisters Square PO Perth WA 6850

P: +61 8 9324 4516

E: [email protected]

W: www.celsiusresources.com

Celsius Resources Limited

Neil Grimes

P: +61 419 922 478 E: [email protected] W: www.celsiusresources.com

Multiplier Media

(Australia Media Contact) Jon Cuthbert

M: +61 402 075 707 E: [email protected]

Zeus Capital Limited

(Nominated Adviser & Broker) Harry Ansell/James Joyce/ James Bavister

P: +44 (0) 20 3 829 5000

Zeus Capital Limited (“Zeus”) is the Company’s Nominated Adviser and is authorised and regulated by FCA. Zeus’s responsibilities as the Company’s Nominated Adviser, including a responsibility to advise and guide the Company on its responsibilities under the AIM Rules for Companies and AIM Rules for Nominated Advisers, are owed solely to the London Stock Exchange. Zeus is not acting for and will not be responsible to any persons for providing protections afforded to customers of Zeus nor for advising them in relation to the proposed arrangements described in this announcement or any matter referred to in it.

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Appendix 1: The following tables are provided to ensure compliance with the JORC Code (2012) requirements for the reporting of Exploration Results for the MCB Project.

SECTION 1:

Sampling Techniques and Data

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

Criteria JORC Code Explanation Commentary
Sampling
techniques
Nature and quality of sampling (e.g. cut
channels, random chips, or specific
specialised industry standard
measurement tools appropriate to the
minerals under investigation, such as down
whole 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 (e.g. ‘reverse
circulation drilling was used to obtain 1 m
samples from which 3 kg was pulverised to
produce a 30 g 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 (e.g. submarine nodules) may
warrant disclosure of detailed information.
Samples were collected from diamond
core drilled from the surface. All drill core
was generally sampled on 2-meter
intervals. In cases where geological and
mineralogical characteristics change,
sample length was not less than 1 meter.
Core samples cut into half using diamond
core saw following the cutting lines
marked by the Geologist. Split cores
returned to its respective core tray.
Samples were shipped by company
vehicle to Intertek Testing Services which
is an external laboratory located in
Manila, Philippines.
Crushed samples were fire assayed for
gold (Au) using a 30-gram charge, with a
detection limit of 0.005 ppm. Gold values
greater than 50 ppm were determined by
gravimetric fire assay.
Copper (Cu) values were assayed using
Four acid digestion. Elements
determined by AAS finish with final
reporting for a total of 36 elements.
Drilling
techniques
Drill type (e.g. 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).
Previous exploration and drilling were
conducted between December 2006 and
July 2013 by Freeport-McMoRan,
completing a total of 46 drill holes with an
aggregate meterage of 25,480.55 meters.
An exploration program managed by
MMCI commenced in February 2021up to
early 2022 with a total of 9 drill holes
added to the updated MRE, with a
cumulative depth of 4641.7 meters.
Five additional drillholes were drilled in
the late 2022 and in 2025 with a total
meterage of 1,427.3 meters.

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Criteria JORC Code Explanation Commentary
The core drilling utilised a triple-tube core
barrel from collar to end-of-hole to ensure
optimum core recovery, with the deepest
downhole depth being 893.8 meters
(MCB-029).
Diamond drilling was used to capture the
rock samples for the new drill hole
intercepts, with the following drill core
size summarized as follows:
PQ sized drill core with a core diameter of
81.1 mm was used from surface to more
competent lithology. Core samples of this
size are estimated to comprise about
43%of the total length of the recently
drilled holes.
HQ sized drill core, with a core diameter
of 61.1mm, was then substituted at
greater depths to accommodate
variations of subsurface conditions. Core
samples of this size is estimated to
comprise about 57% of the total length of
the recently drilled holes.
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.
Core recovery has been recorded for
every interval as part of the routine
geomechanical logging.
Recovered core lengths on average were
measured to be over 98% for the total
length of the drill hole, indicating a high
recovery and minimal lost core.
All drilling activities were supervised by
company Geologists. Trained Core house
Technician were responsible for the core
recovery determination.
Core was arranged to fit the breakages
before the actual core length from the
start to the end of the drill run was
measured. Percent recovery was
calculated from dividing the measured
core length over the total drill run
multiplied by 100.
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.
Geologists were tasked to oversee the
daily quick log report down to sampling.
Daily quick log form was completed to
identify the geological details such as
lithology, alteration and mineralisation
with corresponding percentage estimate
of Cu minerals and Cu grade, using an
established geological code.

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Criteria JORC Code Explanation Commentary
The total length and percentage of the
relevant intersections logged.
Detailed logging proceeds describing
geological characteristics present in the
core, i.e. lithology, alteration, mineralogy,
structures, etc.
Core photography was undertaken after
completing the geomechanical logging.
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 being
sampled.
Samples were routinely taken over a 2m
interval, and cut in half, with half of the
drill core sent for analysis and half of the
drill core retained for future reference.
Samples were cut on site using a hand
core saw. Samples were then selected
and bagged on site prior to delivery to
the laboratory (Intertek) in Manila for
sample preparation.
The sample size is considered
appropriate for type of material being
samples.
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.
Nature of quality control procedures
adopted (e.g. standards, blanks,
duplicates, external laboratory checks) and
whether acceptable levels of accuracy (i.e.
lack of bias) and precision have been
established.
Samples were fire assayed for gold (Au)
using a 30-gram charge, with a detection
limit of 0.005 ppm. Gold values greater
than 50 ppm were determined by
gravimetric fire assay. Copper (Cu) values
were assayed using four acid digestion.
Elements determined by AAS finish
The procedures for the submission of
samples to the laboratory also include the
regular insertion of QA/QC samples in
every transmittal form or batch, which was
typically delivered to the laboratory in
batches of 50 numbered samples. For
each batch of 50 samples a total of 43
came from core samples and an
additional 7 samples were included for
QA/QC checks, which were as follows:
o
Four referenced standards
o
One referenced Blank
o
One coarse (unrecognisable) blank
o
One field duplicate taken from the
quartered core
After sample preparation, all samples
were sent for final analysis to Intertek at

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Criteria JORC Code Explanation Commentary
their laboratory in Manila. Intertek is an
internationally recognised and ISO/IEC
17025:2005 & ISO/IEC 17020:2004
certified independent laboratory.
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.
Analytical procedures provided by an
internationally certified laboratory is
considered in line with industry standard
for the type of deposit and mineralisation
identified at the Property.
Apart from the verification of the
procedures and results as described
above, no further verification of the
sampling and assaying have been
undertaken.
None of the diamond drill holes in this
report are twinned.
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.
All data reference points and maps for the
Makilala database, including drill hole
collar co-ordinates are recorded in WGS
84/UTM Zone 51N.
Compass measurements taken by
Geologists were used to establish the dip
and azimuth of the collar hole as part of
their initial collar surveys. Drill collar
locations were positioned using a
handheld Garmin GPS unit, set to UTM
WGS 84 Zone 51N coordinate reference
system, with an accuracy expected to be
within 2 metres. Downhole surveys were
also completed using a Keeper Gyro at
50m intervals.
Drill collar locations were recently re-
surveyed by Datum Engineering and
Surveying Consultancy including
elevation checks against an updated
drone-based Lidar survey which has a
reported "x-y-z" accuracy of 10 cm.
Collar surveys were then logged into the
master MS Access database after
validation checks were completed against
the updated Lidar survey.
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
The broad drilling pattern is at 100m
spacing for a series of diamond drill holes
which are oriented in a north-west
direction and dipping at predominantly at
60 degrees. These drill holes are
augmented by some drill holes which
have a west-north-west orientation or a

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Criteria JORC Code Explanation Commentary
Ore Reserve estimation procedure(s) and
classifications applied.
Whether sample compositing has been
applied.
north-east orientation or are vertical. (see
figure 1 for Drill Hole Locations).
Drill holes at the MCB deposit are
distributed broadly on eight grid lines,
giving coverage of 1,000 metres from
east to west.
The drill hole spacing where significant
copper-gold mineralisation has been
identified is sufficient to determine the
geology and grade continuity of the area,
as well as the ore body and mineralisation
extents.
In the MRE, drill hole assays were
composited to 2 metres which matches
closely with the sample length down hole
for all drill hole sampling completed at
MCB.
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.
In the resource estimation, drill hole
assays were composited to 2 metres
downhole intervals.
The dominant trend of the tonalite
intrusion, which is directly related to the
broader lower grade copper-gold
mineralisation has an overall strike of 50
degrees and a sub-vertical dip. Drill hole
directions vary relative to this dominant
orientation, with some more optimal drill
holes dipping at 60 degrees towards 320
degrees. There are a number of vertical
drill holes which are not optimal for
assessing the geological contacts or
grade distribution, however, in most
cases these drill holes are also close to
other drill holes which are dipping across
the mineralised domains, typically at 60
degrees.
There is also a defined horizontal control
to the copper-gold mineralisation which
appears to extend away from the source
feeder structures which are vertical in
orientation. Some shallow drilling was
completed to fill in gaps in the drill hole
data existed where possible, often at 50-
to-60-degree angles which are
considered still reasonable for testing the
horizontal orientations identified as part
of the copper-gold distribution at MCB.
Sample
security
The measures taken to ensure sample
security.
The following standard procedures were
enforced for the drilling of new intercepts:

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Criteria JORC Code Explanation Commentary
o
Sample bags are arranged in
sequence according to its sample
number. These are then weighed
and jotted down to a sample
dispatch note which details the
sample numbers, sample type and
laboratory processing required.
Geologists ensures that the
transmittal form is correct for
encoding and submission. The
bags of samples are sent directly to
the Intertek Laboratory in Manila by
company vehicle. No unsupervised
third parties were given access
prior to the chain of custody
procedure.
o
Samples were delivered to Intertek
Testing Services along with two
copies of the sample dispatch form.
One copy for the laboratory to
accept custody of the sample, and
the signed/received copy return to
database custodian at the Core
House facility in Tabuk, Kalinga.
Audits or
reviews
The results of any audits or reviews of
sampling techniques and data.
No other specific audit or review was
conducted other than the validation
checks by the author documented earlier
with regard to the sample preparation,
analysis or security for the information in
the new drillholes.

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SECTION 2:

Reporting of Exploration Results

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

Criteria JORC Code 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.
TheMaalinao-Caigutan-Biyog(MCB)
Copper-Gold project is situated in
Luzon Central Cordillera in the
Barangay of Balatoc, Municipality of
Pasil, Province of Kalinga.
The Project is covered by Mineral
Production Sharing Agreement MPSA-
356-2024-CAR, which encompasses
approximately 2,501 hectares and was
granted on 14 March 2024.
The tenement is held by Makilala
Mining Company Inc. (MMCI), a
Philippines registered corporation that
is 100% owned by Makilala Holdings
Ltd,
The Project site is located within the
Ancestral Domain of Balatoc, and Free
and Prior Informed Consent (FPIC) has
been secured from the Balatoc tribe for
development and operation of the mine
within the designated tenement area.
The MPSA grants exclusive rights for
exploration, development, and
commercial production of copper and
associated minerals for 25 years,
renewable for another 25 years,
providing secure tenure for the Project.
The MCB Project has obtained all
National Government statutory permits
to commence development and mining
operations,
Exploration
done by other
parties
Acknowledgment and appraisal of
exploration by other parties.
Exploration work and drilling was
completed by Makilala Mining
Company Inc. from year 2006 to 2025,
the details of which have been
documented in CLA announcements.
The relative quality and detail
associated with the drilling information
is considered to be of a high standard.
This has enabled the author to establish
a high level of confidence associated
with the historical drilling information.

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Criteria JORC Code Explanation Commentary
Geology Deposit type, geological setting and style
of mineralisation.
The geological setting for the MCB
copper-gold mineralisation is typical of
a porphyry copper + gold + moly
deposit as commonly defined in many
academic papers (Hedenquist and
Lowernstern, 1994; Sillitoe, R. H., 2010.
Corbett and Leach, 1997). The
mineralisation and associated alteration
exist across the contact between the
genetically related intrusive body
(tonalite) and the surrounding host rock
material. In most cases the surrounding
host rock is a mafic volcanic, however,
in some instances the older (not
genetically related to copper-gold
mineralisation) intrusive bodies also
exist in contact with the younger
intrusive resulting in broad sections of
mineralisation and alteration within a
series of intrusive bodies.
There is also evidence at MCB for
epithermal vein deposit types which
exist within close proximity to the large-
scale porphyry copper-gold
mineralisation. At this stage, only the
deposit type that is identified from the
drilling information for MCB is a
porphyry copper-gold style.
Basalt lava flows make up the majority
of the host rocks in the tenement area,
which is part of the oldest exposed unit,
Basement Complex. This Cretaceous-
Paleogene Metavolcanics has been
intruded by quartz diorite complex,
which in Kalinga, ranges in composition
from gabbro to tonalite.
A later stage Tonalite intrusion exists
throughout the project area and is
interpreted to be genetically related to
the copper-gold mineralisation at MCB
deposit.
A dacite flow and dacitic pyroclastic
blankets the older basalt host rock and
tonalitic intrusive rocks.
There are four types of ore
mineralisation that were emphasized in
the project:
o
Type 1- Early high-grade
porphyry Cu-Au mineralisation,
hosted both in tonalite and
basalt.

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Criteria JORC Code Explanation Commentary
o
Type 2- Mix of high-grade
porphyry Cu-Au (Type 1) and
high-sulphidation mineralisation
(Type 4). Hosted in basalt and
tonalites, but with strong Type 1
mineralisation that was partially
overprinted by ore Type 4.
o
Type 3- Medium grade
porphyry-copper
o
Type 4- High-sulphidation
epithermal mineralisation
(See and for a representative Cross
Section of the Geology and its
relationship to the copper-gold
mineralisation at the MCB Deposit).
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.
See Section 1 (Sampling Techniques
and Data) for all details regarding the
drill hole information for the MCB
Property in addition to a full list of all
significant drill intersections which have
been reported.
In addition to the drilling information
that has been reported from previous
MRE, 5 new drill holes were completed
by MMCI and included as part of this
updated Mineral Resource estimate for
MCB.
In summary the drill hole database used
for the updated MCB MRE consists of
64 diamond drill holes with an
accumulated meterage of 31,616.20.
No drill hole information has been
excluded.
Data
aggregation
methods
In reporting Exploration Results,
weighting averaging techniques,
maximum and/or minimum grade
truncations (eg cutting of high 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.
No exploration results are reported in
this release.
Only individual weighted average assay
_results have been reported_and no
metal equivalent values have been
reported.

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Criteria JORC Code Explanation Commentary
The assumptions used for any reporting
of metal equivalent values should be
clearly stated.
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’).
There are several drilling orientations,
but generally drill holes were designed
in a rough grid pattern on lines oriented
N30W-S30E spaced at 100 to 200
meters apart, with an inclination of -60
degrees. For the drilling which is at an
angle of -60 degrees, there is a relative
angle against the contact of the near to
vertical intrusive Tonalite and
associated copper-gold mineralisation
of approximately 30 degrees. In this
case, the estimated true widths of the
copper-gold mineralisation is
approximately half of the reported
down hole length.
In some instances, there are vertical drill
holes which are still useful in defining
the extent of the copper-gold
mineralisation, but at a relatively poor
angle to define the distribution of the
copper-gold mineralisation due to
being sub-parallel to the mineralisation
direction.
Recent drilling completed by MMCI has
improved the distribution of assay
information over the central portion of
the defined copper mineralisation to
improve confidence in the continuity
and for the purpose of increasing the
category from Indicated to Measured at
some important locations.
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.
See Figure 4 and Figure 5 for
representative Cross Section of the
Geology and its relationship to the
copper-gold mineralisation at MCB.
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 data for the project has been
collected, validated and reported and is
considered to be a fair representation
of the MRE from MCB which is the
subject of this which is the subject of
this release.

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Criteria JORC Code Explanation Commentary
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
contaminating substances.
Historical exploration since the date of
the original grant of EP-003-2006-CAR
in 2006 was undertaken under the
ownership and management of Makilala
Mining Company Inc. Exploration work
conducted by Makilala Mining
Company Inc include surface mapping
and sampling (2007), ground magnetic
survey (2007), induced polarisation (IP)
geophysical surveys (2010), and an
extended period of diamond drilling
from 2006 through to 2025 for a total of
46 diamond drill holes.
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 commercially sensitive.
There are a few locations where the
potential extension to the current
Minerals Resource could be tested.
These locations are initially defined at
depth plunging steeply to the west
underneath the high-grade copper-
gold mineralisation, and also to the
west of the Maalinao-Panyaw fault. The
location for the possible high-grade
copper-gold to the west include at
depth, due to the interpretation that the
fault has downthrown the geology on its
western side, or toward the north-west,
as a possible trend exists to the
mineralisation in this direction which
has not been tested.
Apart from the direct extensions to the
currently defined copper-gold
mineralisation, there is considerable
scope for further discoveries of two
defined deposit types at the MCB
Tenement.
Porphyry copper-gold deposit types
o
There are extensive intrusions in
the area that are directly related to
the copper-gold mineralisation,
and which could at multiple
locations formed significant high-
grade copper-gold deposits.
Epithermal vein hosted deposit types
o
It is considered likely that there
could be a combination of narrow
high grade, and/or more broad
large scale and lower grade
epithermal deposit types that are
closely related to the porphyry
copper-gold deposits at MCB.

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SECTION 3:

Estimation and Reporting of Mineral Resources

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

Criteria JORC Code 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.
The original assay sheets and drill logs were checked
against the drill hole database by the author and no
systematic or random errors were identified as part of
this validation check of the database.
In addition, the original laboratory reports were
checked against the drill hole database. This data
review did not identify any systematic or isolated errors
in the drill hole database.
Outliers in the specific gravity measurements were
excluded from the dataset.
Drill core observations and validation steps were
completed in August 2020 which included a review of
all the defined Ore Domains and broad contact
positions between the high grade and low-grade
domains in addition to the low-grade ore to waste
domain boundaries.
All drill core from the MCB Project which were used to
define the 2025 Mineral Resources have been
preserved and were available for the author to visually
check against the drill logs and recorded assay results.
Geological observations that are recorded in the drill
logs leading to the definition of the mineralised
domains at MCB appear consistent and reflective of
what could be observed from the drill core by the
Author. In addition, copper sulphides and recently
weathered copper-sulphides (due to exposure of the
drill core at the surface) are observable in the drill core
where high grade copper mineralisation has been
reported. The relative presence of copper sulphides
and oxidised copper minerals appear reasonably
reflective of the assay results reported in the database
based on the observations made by the author of the
drill core.
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.
The Author has completed site inspections of the
property including detailed review of the drill core
which relate to the Mineral Resource Estimate. The
field inspections included validation of the drill collar
locations for drill holes (using a handheld GPS) which
contained significant copper mineralisation that are
included in the Mineral Resource estimate.
Geological
interpretation
Confidence in (or
conversely, the uncertainty
of) the geological
The geological interpretation associated with the MCB
Mineral Resource estimate is considered by the author
to have a high level of confidence, with limited

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Criteria JORC Code Explanation Commentary
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.
variability considered likely due to a difference in the
geological interpretation.
The interpretation and Mineral Resource estimate have
been compared directly with the previous Mineral
Resource estimate in 2022. The copper and gold
mineralization defined in the Mineral Resource
estimate has a high level of consistency relative to the
geological interpretation completed by Freeport-
McMoRan.
The geological controls on the copper-gold
mineralization at the MCB copper-gold mineralisation
is typical of a porphyry copper + gold + moly deposit
as commonly defined in many academic papers
(Hedenquist and Lowernstern, 1994; Sillitoe, R. H.,
2010. Corbett and Leach, 1997).
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 copper-gold mineralisation at MCB is typical for a
porphyry copper-gold deposit with the geometry of a
very thick body, up to 100m in true width for the high-
grade core and surrounded by over 400m in true width
of additional lower grade copper mineralisation, as a
relatively elongate body which stretches out parallel to
the contact between the intrusive tonalite and the host
rock basaltic rocks.
Away from the central core, the high-grade copper-
gold mineralisation extends further as a narrow
structurally controlled sheet, interpreted again to be
mostly parallel to the tonalite – basalt contact, with
some possible extensions extending along interpreted
structures which exist in a north-north-west orientation.
Both structural sets are close to vertical, and their
intersection points also are very steeply dipping
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
The MCB geological models, ore domain models and
associated interpolation were all completed in the 3D
software modelling package Leapfrog Geo and
Leapfrog Edge (Version 2025.1.1).
Ore Domains
o
A combination of features was utilized to review
and subsequently domain the copper
mineralisation to an appropriate level for the
purpose of estimating the copper and gold
contents.
High Grade Copper Domain (s)
o
A high-grade ore type called “Ore Type 1” was
based on alteration features, magnetic
susceptibility readings and copper grades.
o
In addition, the spatial location of this ore type
was predominantly situated across a tonalite and
mafic volcanic contact position.

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Criteria JORC Code Explanation Commentary
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.
Estimation of deleterious
elements or other non-grade
variables of economic
significance (eg sulphur for
acid mine drainage
characterisation).
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 assumptions 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 drill hole data, and
use of reconciliation data if
available.
o
For the purpose of defining an ore domain that
obeyed the observed trends and geological
controls on the mineralisation, the Type 1 ore
positions were reviewed relative to the potential
continuity of this ore type.
o
In locations where this ore type was very narrow,
or patchy and no observable continuity, this ore
type was not defined as a Type 1HG domain.
o
In positions where the larger and more
continuous Type 1 sections were observed, the
ore domain was further reviewed for possible
continuity along the trend of the tonalite/mafic
volcanic contact position. In some cases, the
Type 1HG domain was extended into a larger
body, where there appeared to be additional
high-grade copper mineralisation that extended
as part of this mineralized domain in 3D space
along the tonalite/mafic contact position.
o
The original Type 1HG high-grade domain has
been divided into two separate domains. The
Type 1HG domain was segregated into a shallow
horizontal high-grade domain (Type 1 HGH)
representing shallow and relatively flat-lying
higher grade copper mineralisation, and the
remaining vertically oriented high-grade material
which forms the Type 1 HGV (High Grade
Vertical) domain. Both domains are
predominantly characterized by Type 1 style
mineralisation.
Low Grade Copper Domain
o
Further grade continuity models were created
surrounding the high-grade material, with
observable boundaries which are parallel to the
older volcanics and diorite intrusions position.
o
There appear to be a natural geological
boundary at close to 0.2% copper, which has
been used as the basis for developing a
surrounding low-grade domain which is
substantially mineralized. The position for
copper mineralisation is not necessarily at exactly
0.2% copper, however, it is observable that there
are distinct trends with grade distributions
roughly above and then below into waste
domains across this position. For example,
there is a distinct low-grade trend in the middle
of the tonalite body which is parallel to the dip
and strike of the main structural trend. This
observation and apparent close link to the grade
trends with the geological contacts and alteration
was the basis for creating a low-grade domain
which ensured that the data from the waste
material was not mixed with the broader lower

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Criteria JORC Code Explanation Commentary
grade trends as part of the Mineral Resource
estimate
o
Therefore, a low-grade domain boundary was
created which obeyed the general trend of the
contact position between assay results which
were above and below 0.2% copper and for
which this contact position was distinctly parallel
to the dominant geological trends.
BLOCK SIZE
o
A parent cell size of 10m x 10m x 10m was used
as the final model block size which appear to
appropriately fill the model with cells and is
considered appropriate for any potential
economic evaluation of the Mineral Resource,
which is most likely considered to be via the
block caving method, or large-scale open
stoping mining with back fill.
ORE CONTINUITY AND STATISTICAL ANALYSIS
o
After applying the constraints on the ore
domains for the high-grade and low-grade
domain boundaries, each dataset was reviewed
in terms of their basic statistics and also a review
of their potential continuity based on their
variograms.
STATISTICS AND TOP CUT
o
The summary basic statistical information for
copper, gold and specific gravity associated with
each domain, based on the 2-meters composited
datasets from within each domain are
summarised in the following tables.
o
A review of the statistics for each domain did not
identify significant high value outliers that are
considered likely to result in an overestimated
either locally or globally to the grade distribution
within the block model. Therefore, no top cut
was applied to the Mineral Resource estimate.
Domain Type 1HGH
Copper
Gold
Count
625
625
Length
1272
1272
Mean
0.79
0.12
Standard Deviation
0.61
0.20
Coefficient of Variation
0.77
1.61
Variance
0.38
0.04
Minimum
0.05
0.01
Lower Quartile(Q1)
0.43
0.04
Second Quartile(Q2)
0.65
0.07
Upper Quartile(Q3)
0.97
0.15
Maximum
6.91
3.99

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Criteria JORC Code Explanation Commentary
Domain Type 1HGV
Copper
Gold
Count
1913
1913
Length
3859
3859
Mean
1.03
0.45
Standard Deviation
0.81
0.62
Coefficient of Variation
0.78
1.36
Variance
0.66
0.38
Minimum
0.01
0.01
Lower Quartile(Q1)
0.45
0.06
Second Quartile(Q2)
0.74
0.16
Upper Quartile(Q3)
1.45
0.63
Maximum
6.52
6.11
Domain Type 3LG
Copper
Gold
Count
4752
4752
Length
9559
9559
Mean
0.35
0.07
Standard Deviation
0.28
0.11
Coefficient of Variation
0.81
1.57
Variance
0.08
0.01
Minimum
0.0001
0.003
Lower Quartile(Q1)
0.19
0.02
Second Quartile(Q2)
0.29
0.04
Upper Quartile(Q3)
0.43
0.08
Maximum
6.43
2.71
VARIOGRAM ANALYSIS
o
Variograms were completed for all of the
reported mineralised domains. The results were
generally in line with the geological
interpretations with a high level of confidence up
to in initial structure or inflection point in the
variogram between 50m and 70m for all three
mineralised domains. This distance when
supported by multiple drill holes is considered to
have a high degree of confidence with regards to
the copper and gold grade estimates based on
the observations of the copper grade information
in 3D space relative to the host rock geology and
influencing or cross cutting major faults.
o
The Sill for the variograms for each mineralised
domains extended further, but at a lower level of
confidence than the initial structure defined
within each variogram. Details for each
mineralised domain are summarised below.
Domain Type 1HGV Copper Gold
Count 1913 1913
Length 3859 3859
Mean 1.03 0.45
Standard Deviation 0.81 0.62
Coefficient of Variation 0.78 1.36
Variance 0.66 0.38
Minimum 0.01 0.01
Lower Quartile(Q1) 0.45 0.06
Second Quartile(Q2) 0.74 0.16
Upper Quartile(Q3) 1.45 0.63
Maximum 6.52 6.11
Domain Type 3LG Copper Gold
Count 4752 4752
Length 9559 9559
Mean 0.35 0.07
Standard Deviation 0.28 0.11
Coefficient of Variation 0.81 1.57
Variance 0.08 0.01
Minimum 0.0001 0.003
Lower Quartile(Q1) 0.19 0.02
Second Quartile(Q2) 0.29 0.04
Upper Quartile(Q3) 0.43 0.08
Maximum 6.43 2.71

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Criteria JORC Code Explanation Commentary
Type 1HGV Domain:This ore domain occurs as a
vertical high-grade copper mineralisation situated
across a tonalite and mafic volcanic contact position.
The major axis has a strike of 050 degrees which is very
close to the observable trend of the geology and
interpreted boundaries to the copper mineralisation.
Type 1HGH Domain:This ore domain occurs as a
shallow and relatively flat lying higher grade copper
mineralization. The variogram analysis has strong
support for over 60m, up to an inflection point where
the sill in modelled.
Type 3LG Domain: A distinct low-grade trend in the
middle of the tonalite body and surrounding the
higher-grade mineralisation domains within the host
rock mafic rocks which is parallel to the dip and strike
of the main structural trend.
INTERPOLATION METHOD
o
After definition of the ore domains and
subsequent statistical and variogram analysis
were completed for each ore domain, Ordinary
Kriging (OK) was used as a standard estimator for
both copper and gold values.
Moisture Whether the tonnages are
estimated on a dry basis or
with natural moisture, and
the method of determination
of the moisture content.
The tonnes estimated for the MCB deposit block
models were calculated on a dry basis.
Cut-off
parameters
The basis of the adopted
cut-off grade(s) or quality
parameters applied.
The MCB deposit has been limited to a defined body of
copper and gold mineralisation which are
predominantly above 0.2% copper on average.
The 0.2% lower limit is also broadly in line with the
expected lower economic limits of the likely mining
and processing options considered for MCB.
Therefore, a preferred lower cut-off grade of 0.2%
copper was applied to the reporting of the Mineral
Resource estimate which is based on the information
provided in this report (Table 1).
Mining factors
or
assumptions
Assumptions made
regarding possible mining
methods, minimum mining
dimensions and internal (or,
if applicable, external)
mining dilution. It is always
necessary as part of the
process of determining
reasonable prospects for
eventual economic
extraction to consider
Benchmark mining costs of US$16/ t and processing
costs of US$10/t respectively for a medium sized
(2.25Mt per annum) underground block caving mining
method and processing using floatation to produce a
copper-gold concentrate have been assumed where
applicable for the Mineral Resource estimate.
A lower cut-off grade of between 0.2% and .25copper
has been used as the preferred lower cut-off grade for
the reported Mineral Resource estimate, which is
considered appropriate based on the geological
continuity associated with copper mineralisation above

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Criteria JORC Code Explanation Commentary
potential mining 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.
0.2% copper in addition to a broad economic cut-off
point based on a US$5/lb copper price.
A preliminary economic assessment ( Study – see CLA
announcement on 1 December 2021) was completed
for the MCB deposit which identified that an initial
mining method of sub-level open stoping with back-fill
would be the preferred mining method. The closest
approximation with regards to a lower cut-off grade for
this type of mining method is close to 0.5% copper,
similar to the defined boundaries of the high-grade
mineralised domains.
A review is also ongoing with regards to some surface
at stabilisation work and block caving mining methods,
both of which are considered to identified mining
options which would have economic cut-off closer to
the reported Mineral Resource of 0.2% copper.
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.
Test work for the multiple mineralisation types over
various grade ranges have been completed at both
ALS laboratory in Perth and Brisbane Met Labs. The
results from this test work identified that high copper
and gold recoveries (95% and 77% respectively) are
possible from the MCB copper mineralisation using
conventional floatation technology to recover a
saleable copper-gold concentrate (See CLA
announcement dated 11 November 2025).
Environ-
mental 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 operation. While
The MCB deposit exists within a relatively high
mountain range with local regions containing high
topographic relief, ranging from 800m in the valleys to
over 1,300m at the surrounding mountain peaks.
Work completed as part of the study announced by
CLA on 1 December 2021 identified a number of
mining options which are considered viable options for
the mining of the MCB deposit which take into account
the environmentally sensitive nature of the high
mountain range and local environment at MCB.
It is assumed at this stage that there are no additional
impediments or environmental controls which would

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Criteria JORC Code Explanation Commentary
at this stage the
determination of potential
environmental impacts,
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.
prevent the proposed mining operation from
proceeding outside of the assumptions made in this
release.
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.
Bulk density measurements were routinely taken
throughout the drilling campaign and are available for
all the defined ore domains. The method used to
collect the specific gravity information for each drill
hole is summarised in the sampling and core
management procedures report by by the company.
These procedures are summarised as follows:
o
Specific gravity is determined by weighing a dry
core sample in air and as submerge in water.
o
Two 10 to 15 cm long split core samples are
collected from each sampling interval, one near
the start and the other near the end of the
interval.
o
Samples were weighed in air, weighed
suspended in water, and weighed in air again to
determine its saturated weight.
A review of the bulk density measurements identified
that there is minimal variability in the bulk density
measurements, apart from some generally lower values
that exist closer to the surface, or within the top 100m
from surface.
Given that the basic statistics for specific gravity in each
domain showed very low standard deviation for both
uncomposited and 2m composited drill hole data, the
mean specific gravity value for each domain was
applied as the default throughout the respective block
model domains. These default values were derived
from the basic statistics of the drill hole data for each
ore domain.
Classification The basis for the
classification of the Mineral
Resources into varying
confidence categories.
Measured Mineral Resource Classification
o
The updated Mineral Resource for MCB
increased the confidence on the Measured
component of the 2025 Mineral Resource
Estimate. The criteria for the Measured Mineral

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Criteria JORC Code Explanation Commentary
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.
Resource for each domain was based on search
ellipse parameters with a maximum direction
length of 60m which was less than 60% of the
defined Sill distance for all the mineralised
domains and corresponded to an inflection point
in the variogram within which the confidence
level for the continuity of the copper distribution
is higher. Minimum selection criteria for the
Measured criteria also included a minimum of 8
samples from at least 2 drill holes and a
maximum total of 18 samples derived from the
2m composited data.
Indicated Mineral Resource Classification
o
The Indicated Resource for the MCB model was
based on the second pass which was defined by
a search distance which is approximately the
~1.5x the Sill distance based off the Variogram
analysis for each domain. The additional
selection criteria for the Indicated category
included minimum number of samples of 4 and a
maximum of 20 samples derived from the 2m
composited data.
Inferred Mineral Resource Classification
o
The Inferred Mineral Resource was extended for
twice the distances applied to the Indicated
Mineral Resource using a minimum of 2 samples
and maximum of 10 samples defined for each
block. Samples derived from only 1 drill hole
were required to fill the blocks for the Inferred
category.
Audits or
reviews
The results of any audits or
reviews of Mineral Resource
estimates.
No independent audit or review has been undertaken
on the updated Mineral Resource estimate for the MCB
Project which is the subject of this JORC Report.
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
The relative quality and detail associated with the
drilling information which underpins the Mineral
Resource estimate for MCB is considered to be of high
standard. This has enabled the author to establish a
high level of confidence associated with the geological
interpretations and definition of the various ore
domains.
The analysis of the drill hole data statistics within each
respective ore domain has identified a relatively good
correlation and consistency of assay data for hundreds
of meters, with some local variations being consistent
with what would be expected within a relatively large
porphyry copper style of mineral deposit.
The current level of Measured, Inferred and Indicated
Mineral Resource estimates are considered appropriate

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Criteria JORC Code Explanation Commentary
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 statements of relative
accuracy and confidence of
the estimate should be
compared with production
data, where available.
relative to the data distribution and confidence in the
distribution of the copper and gold mineralisation.

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