Ardea Resources Limited (Ardea or the Company) is pleased to advise that the Kalgoorlie Nickel Project (KNP) - Goongarrie Hub Definitive Feasibility Study (DFS) commenced on 1 May 2024.

The Infill Drill program is an integral component of the DFS and has commenced.

The Infill Drill program has been designed to upgrade the nickel-cobalt laterite resources to Measured Mineral Resource category for the first five year open pits. The planned program comprises 888 Reverse Circulation (RC) drill holes for a total of 51,745m on a 40x40m spacing. SRK concluded the 40x40m drill spacing will assist in defining Measured Mineral Resources.

The Infill Drill program is being completed by Kennedy Drilling, who have extensive experience drilling the nickel-cobalt laterite deposits in the Goongarrie Hub. RC drilling has commenced at the Big Four nickel-cobalt deposit where a total of 16,215m is planned. One RC rig is currently being utilised, with additional rigs planned to be brought on to site in September 2024. The program will be supervised by staff from Ardea's wholly owned subsidiary, Kalgoorlie Nickel Pty Ltd (KNPL) and selected contract geologists. Additional support staff are also being recruited, including a recently appointed HSE Manager. The full Goongarrie Hub infill RC drill program is expected to be completed by end of CY2024. The results from the drilling will then be used to provide an updated Mineral Resource Estimate (Measured category) for the first five year open pits.

This will increase confidence in the existing nickel laterite resources, particularly during the payback period. As part of the DFS, additional drill programs are also planned for geotechnical testwork and hydrogeological testing. Additional diamond core drilling to provide bench-scale metallurgy material and validate historic RC results will also be completed. Commencement of these programs are pending granting of approvals (programs of work) from DEMIRS and final drill design.

Contact:

Andrew Penkethman

Managing Director and Chief Executive Officer

Tel: +61 8 6244 5136

About Ardea Resources

Ardea Resources (ASX:ARL) is an ASX-listed nickel resources company, with a large portfolio of 100%-controlled West Australian-based projects, focussed on: Development of the Kalgoorlie Nickel Project (KNP) and its sub-set the Goongarrie Hub, a globally significant series of nickel-cobalt and Critical Mineral deposits which host the largest nickel-cobalt resource in the developed World at 854Mt at 0.71% nickel and 0.045% cobalt for 6.1Mt of contained nickel and 386kt of contained cobalt (Ardea ASX release 30 June 2023), located in a jurisdiction with exemplary Environmental Social and Governance (ESG) credentials. Advanced-stage exploration at compelling nickel sulphide targets, such as Kalpini, and Critical Minerals targets including lithium, scandium and Rare Earth Elements throughout the KNP Eastern Goldfields world-class nickelgold province, with all exploration targets complementing the KNP nickel development strategy

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