The Mineral Resource data presented in the tables comprise of summary extracts of the respective technical reports. The significant figures used in the table are intended to reflect the level of accuracy of the different resource classifications reported. Numbers have been rounded and therefore there may be small differences in the totals.

Cut-off grades have been clearly stated, along with the gold price assumption of US$2,000/oz, both of which remain unchanged for the Mineral Resource estimate. A total of 297,600 metres of drilling was completed between June 2022 and June 2023, divided between open pit (67%) and underground (33%) with the open pit and underground resource models externally audited by H&S Consultants Pty Ltd and Cube Consulting, respectively.

Group Mineral Reserves

The Mineral Reserve data presented in the tables below comprise a summary extract from the Sukari Mineral Reserve report. Numbers have been rounded and therefore there may be small differences in the totals.

Calculated using various cut-off grades

Sukari Gold Mine only

Included in the Mineral Resources, the Mineral Reserves as of 30 June 2023 were 5.8Moz of gold. The gold price assumption used for estimating Mineral Reserves is unchanged at US$1,450/oz. Based on the planned throughput and mining rates, the remaining Sukari Mineral Reserve life is 13 years for the open pit operation, including stockpiles, and 8 years for the underground operation.

Doropo Gold Project only 

The Mineral Reserve was published with the Pre-Feasibility Study (“PFS”) (available here) and is reported in accordance with the CIM Definition Standards for Mineral Resources and Mineral Reserves (CIM, 2014). The Mineral Resource was converted by applying Modifying Factors. The Probable Mineral Reserve estimate is based on the Mineral Resource classified as Indicated at a gold price of US$1,500/oz. The project has a current Mineral Reserve life of 10 years.

Mineral Resource Notes

All figures are rounded to reflect appropriate levels of confidence. Apparent differences may occur due to rounding

SUKARI GOLD MINE (Egypt)

Sukari Open Pit

In respect of the Sukari open pit Mineral Resource, the estimate was performed by Centamin and audited by H&S Consultants Pty Ltd (“H&SC”):

• Centamin depleted the 2023 open pit Multiple Indicator Kriging (“MIK”) Mineral Resource estimate for Sukari as at 30 June 2023, within a whittle pit shell generated by Centamin at a gold price of US$2,000/oz
• The estimation methodology of MIK employed in preparing the Mineral Resource is consistent with the 2022 estimate, using the reporting cut-off grade of 0.3g/t Au
• All open pit Mineral Resources are estimates of recoverable tonnes and grades using MIK with block support correction produced in the Vulcan software
• Measured Resources lie in areas where drilling is available at a nominal 25 x 25 metre spacing, Indicated Resources occur in areas drilled at approximately 25 x 50 metre spacing and Inferred resources exist in areas of broader spaced drilling
• The open pit Mineral Resource estimate at a 0.3g/t Au cut-off grade extends over a strike length of approximately 2.5 kilometres, a width of 500 metres and from current surface to a depth of 900 metres
• The open pit Mineral Resource estimate used diamond, reverse circulation, open pit and underground grade control and advanced grade control drilling, while underground face samples were excluded with the dataset being closed off as at 30 June 2023. The open-pit resource dataset comprised 1,325,028 two and a half metre drill hole composites
• The Mineral Resource estimates were adjusted to the mining surface and underground mining voids as at 30 June 2023, and includes some material that could be mined by underground methods.

Sukari Underground

In respect of the Sukari underground Mineral Resource, the estimate was performed by Centamin and audited by Cube Consulting Pty Ltd:

• The model has been developed utilising additional drilling (90,201 metres) and geological information at a consistent domain cut-off grade of 0.5g/t Au with a cut-off date of 30 June 2023
• The estimation methodology of Ordinary Kriging (“OK”) employed in preparing the updated underground Mineral Resource is consistent with the 2022 estimate, using the reporting cut-off grade of 1.0g/t Au
• The Sukari underground Mineral Resources are defined below the US$2,000/oz open pit shell and combined with the open pit Mineral Resources to provide an overall Sukari Mineral Resource estimate
• All underground Mineral Resources are estimated using OK and Vulcan software
• Measured Resources lie in areas where drilling is available on at least 20 x 20 metre spacing and the interpreted mineralisation defined by underground mine development. Indicated Resources occur in areas drilled at 50 x 25 metre spacing and Inferred Resources exist in areas of broader spaced drilling of 100 x 50 metre spacing
• The underground Mineral Resource estimate at a 1.0g/t Au cut-off grade is unconstrained and extends over a strike length of approximately 2.5 kilometres, a width of approximately500 metres and from current surface to a depth of approximately 1,200 metres
• All available surface drilling, channel and underground samples were used as at 30 June 2023. The resource dataset used in the Mineral Resource estimate comprised of a total of:
  • 1,289,193 one metre down hole drilling composites
  • 320,007 one metre down hole channel sample composites, and
  • 3,061,620 two and a half metre down hole drilling composites.
• The Mineral Resource estimates were adjusted for the mining of surface and underground voids as at 30 June 2023
• Open Pit, underground and course ore stockpile material have been reported at a cut-off of 0.4g/t Au.

DOROPO GOLD PROJECT (Côte d'Ivoire)

• Mineral Resource estimate is based on available data as at 31st October 2023
• The gold grade estimation method is OK with Localised Uniform Conditioning
• The rounding of tonnage and grade figures has resulted in some columns showing relatively minor discrepancies in sum totals
• All Mineral Resource estimates have been determined and reported in accordance with NI 43-101 and the classification adopted by the CIM Definition Standards for Mineral Resources and Mineral Reserves (CIM, 2014)
• A cut-off grade of 0.3 g/t gold is used to account for reserves in the oxide material which are around 0.4g/t
• The Mineral Resource cut-off grade of 0.5g/t was established prior to the PFS study, confirming the economic viability of a smaller portion of lower-grade oxide resources. As Centamin proceeds with the DFS, a review and revision of the Mineral Resource cut-off grades for oxide resources will be conducted
• Pit optimisations based on a US$2,000/oz gold price were used to constrain the 2022 Mineral Resource and were generated by Orelogy Mine Consultants
• This Updated Mineral Resource estimate was prepared by Michael Millad and Flavie Isatelle of Cube Consulting Pty Ltd who are the Qualified Persons for the estimate
• This Updated Mineral Resources estimate is not expected to be materially affected by environmental, permitting, legal title, taxation, socio-political, marketing or other relevant issues.

ABC Project (Côte d'Ivoire)

• Mineral Resource estimate was last updated 23 September 2021
• The ABC resource estimate comprises of two deposits – Kona South & Kona Central
• Drill spacing is a nominal 50 x 50 x 1 metre spacing
• Reverse circulation and diamond drilling only has been used for the estimation
• An OK and LUC estimation using Indicator Kriging at Kona Central to define ore and waste boundaries
• The grade estimate has been classified as Inferred in accordance with the CIM Definition Standards for Mineral Resources and Mineral Reserves (CIM, 2014)
• The Mineral Resource has been reported at an economic cut-off grade of 0.5g/t, 250 metres below surface and within 100 metres of the nearest sample
• The Mineral Resources Estimate was prepared by Mr. Patrick Adams of Cube Consulting who represents the Qualified Person for the estimate
• The Mineral Resources Estimate is not expected to be materially affected by environmental, permitting, legal title, taxation, socio-political, marketing or other relevant issues.

Mineral Reserve Notes

SUKARI GOLD MINE (Egypt)

• Mineral Reserve estimates were calculated using a US$1,450/oz gold price
• A new LOM production schedule and cash flow was produced using only the P&P Mineral Reserves to demonstrate economic viability.
• Open pit
  • Open pit cut-off grade for reporting of 0.4g/t Au for mill processing with dump leach defined above 0.2g/t Au cut-off
  • Open pit design is based on a cut-off of 0.4g/t Au for M&I Mineral Resources only
  • M&I Mineral Resources inside the designed open pit was converted to P&P Mineral Reserves
  • Open pit Mineral Reserve estimate includes 8.3Mt at 0.4g/t Au for 0.1Moz gold, using a 0.2g/t Au cut-off grade, for dump leach material.
• Underground
  • Underground cut-off grade for reporting of 1.0g/t Au for development with stopes defined within a 2.2g/t Au cut-off.

DOROPO GOLD PROJECT (Côte d'Ivoire)

• The Mineral Reserve is reported according to CIM Definition Standards for Mineral Resources and Mineral Reserves (CIM, 2014). The NI 43-101 report is (available here)
• The mine design and associated Mineral Reserve estimate for the Doropo Gold Project is based on Mineral Resource classified as Measured and Indicated from the Cube Mineral Resource Estimate (MRE) with an effective date of 25 October 2022
• Ore block grade and tonnage dilution was incorporated into the model
• The Mineral Reserve was evaluated using variable cut-off grades of 0.39 to 0.71g/t Au depending on mining area and weathering profile.
  
  

A “Qualified Person” is as defined by the National Instrument 43-101 of the Canadian Securities Administrators. The below named Qualified Person(s) have verified the data disclosed, including sampling, analytical, and test data underlying the information or opinions contained in this announcement in accordance with standards appropriate to their qualifications. Each Qualified Person consents to the inclusion of the information in this document in the form and context in which it appears.

Information of a scientific or technical nature in this document, including but not limited to the Mineral Reserve and Mineral Resource estimates, was prepared by and under the supervision of Qualified Person Craig Barker, Group Mineral Resource Manager, and in addition to the below internal and external Qualified Persons  

Sukari Gold Mine, Egypt

• Mineral Reserve (open pit) - Ozgur Zor of Centamin plc
• Mineral Reserve (underground) - Petre Florea of Centamin plc
• Mineral Resource (open pit) - Craig Barker of Centamin plc
• Mineral Resource (underground) - Craig Barker of Centamin plc

Doropo Project, Côte d’Ivoire

• Mineral Reserve - Ross Cheyne of Orelogy Consulting
• Mineral Resource - Michael Millad and Flavie Isatelle of Cube Consulting Pty Ltd

ABC Project, Côte d’Ivoire

• Mineral Resource - Patrick Adams of Cube Consulting Pty Ltd

Investors should be aware that the figures stated are estimates and no assurances can be given that the stated quantities of metal will be produced.

Mineral Resource and Mineral Reserve estimates contained in this document are based on available data as at 30 June 2023 for Sukari and 31 October 2023 Doropo.

Varying cut-off grades have been used, and clearly marked, for estimating the Mineral Resource and Mineral Reserve estimates.