Rimfire Pacific Mining (ASX: RIM, 'Rimfire' or the 'Company') advises that a 3,000-metre drilling program to test for primary platinum + palladium (PGE's) mineralisation within un-weathered (fresh) ultramafic bedrock has commenced at its Avondale and Fifield Projects, which are located 70 kilometres northwest of Parkes within the highly prospective Lachlan Orogen of central New South Wales

Commenting on the announcement, Rimfire's Managing Director Mr David Hutton said: 'Testing for primary PGE mineralisation at the Avondale and Fifield Projects is a continuation of the Company's new critical minerals exploration strategy.

Despite being Australia's largest historical production area for platinum, the Fifield area remains largely unexplored, especially at depth with previous exploration largely focused on defining shallow alluvial mineralisation. This is the first drill program dedicated to finding primary PGE mineralisation on Rimfire tenure in over 20 years and we look forward to providing further market updates as new information comes to hand.'

Drilling Details

15 Diamond holes (3,000 metres) will be drilled to test for primary platinum + palladium (PGE's) mineralisation at 6 targets (Melrose, Jack's Lookout, Gillenbine, Platina Lead, Kara Kara and Currajong) that lie within Rimfire's Avondale and Fifield Projects at Fifield. Regionally they lie within a 50-kilometre-long belt of underexplored intermediate volcaniclastics, sediments and ultramafic intrusive units that make up a geologically significant regional - scale structure called the 'Steeton Ultramafic Suture Zone'.

The targets are prospective for the discovery of ultramafic - hosted PGE's, nickel, cobalt, scandium, and copper mineralisation and are characterised variously as having historic surface anomalism and / or historic drill intercepts (Currajong, Platina Lead, and Gillenbine), or a poorly tested magnetic anomaly interpreted to represent prospective ultramafic rock types (Melrose, Jacks Lookout and Kara Kara), At Currajong, previous drilling (in the late 1990's and early 2000's) of an ultramafic intrusive sill - like body returned strongly anomalous platinum (Pt) +/- palladium (Pd) in both the weathered and fresh portions of the ultramafic host rock - none of which have been subsequently followed up. Historical results include: Jack's Lookout and Gillenbine lie immediately adjacent to the Platina Lead which was previously mined for coarse alluvial platinum and gold in the 1880's through to the early 1900's and together with other Leads in the area (all of which are on Rimfire tenure) remains Australia's largest dedicated area for platinum production with an estimated 20,000 ounces of platinum and 6,200 ounces of gold produced during this period. Of the leads, Platina Lead was the most important with an estimated 17,000 ounces of platinum produced at a grade of 5 to 13g/t and 4,400 ounces of gold produced at a grade of 1.5 to 4.6g/t.

Drilling at Jack's Lookout and Gillenbine aims to confirm the presence of primary PGE mineralisation within the underlying ultramafic units. Several drillholes will also test directlybeneath surface workings at Platina Lead to determine the prospectivity of an interpreted ultramafic unit that may be the source of the shallow alluvial mineralisation.

At Melrose, recent wide spaced aircore drilling of a 'bullseye' magnetic anomaly by Rimfire successfully confirmed the presence of an ultramafic intrusive unit, assaying of which returned strongly anomalous levels of nickel, cobalt, scandium, and copper from several holes.

Subsequent re-assaying of 8 composite aircore samples has returned anomalous PGE's up to 0.31g/t platinum + palladium which suggests that the Melrose ultramafic is potentially platiniferous. The current deep drilling will be the first test of the ultramafic beneath the base of weathering and aims to confirm whether the unit is prospective for primary PGE mineralisation.

Contact:

David Hutton

Tel: +61 417 974 843

About Rimfire

Rimfire Pacific Mining Ltd (ASX: RIM) is an ASX-listed exploration company focused on exploring for critical minerals within the Lachlan Orogen and Broken Hill districts of NSW.

Rimfire currently has two projects in the Lachlan Orogen which are being funded by Rimfire's exploration partner - Golden Plains Resources (GPR): Avondale Project (GPR earning up to 75%) & Fifield Project (GPR earning up to 50.1%) Both projects are prospective for Critical Materials (PGEs, Nickel, Copper & Cobalt) - which are essential for renewable energy, electrification, and green technologies.

The development ready Sunrise Energy Metals Ni-Co-Sc Project (ASX: SRL) is adjacent to both projects. The Fifield Project hosts the historical Platina Lead mine, the largest producer of Platinum in Australia

Forward Looking Statements

This document contains 'forward looking statements' as defined or implied in common law and within the meaning of the Corporations Law. Such forward looking statements may include, without limitation, (1) estimates of future capital expenditure; (2) estimates of future cash costs; (3) statements regarding future exploration results and goals. Where the Company or any of its officers or Directors or representatives expresses an expectation or belief as to future events or results, such expectation or belief is expressed in good faith and the Company or its officers or Directors or representatives as the case may be, believe to have a reasonable basis for implying such an expectation or belief. However, forward looking statements are subject to risks, uncertainties, and other factors, which could cause actual results to differ materially from future results expressed, projected or implied by such forward looking statements. Such risks include, but are not limited to, commodity price fluctuation, currency fluctuation, political and operational risks, governmental regulations and judicial outcomes, financial markets, and availability of key personnel. The Company does not undertake any obligation to publicly release revisions to any 'forward looking statement'.

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