GREAT WESTERN MINING CORPORATION PLC ('Great Western', 'GWM' or the 'Company') Operations Update

Great Western Mining Corporation PLC (AIM - GWMO, Euronext Growth - 8GW), which is exploring and developing gold, silver and copper targets in Mineral County, Nevada, is pleased to provide the following update on its operations and outlines its plans for 2023

PRODUCTION MILL Construction and commissioning in first half

TRAFALGAR HILL Assay results from 2022 drilling confirm potential

MINERAL JACKPOT & OMCO Follow-up drilling planned

COPPER POTENTIAL Positive leads from geological desktop work in Q3 2022

RARE EARTH ELEMENTS Review of data indicates potential at M2

Great Western Chairman Brian Hall commented: 'The Company has made great strides over the last year and we look forward to building on this momentum in 2023. We expect to commission the processing mill in the first half of 2023 and we have an ambitious programme of exploration to follow up on successful drilling results achieved over the last two years. 'The transition into a revenue generating precious metals producing entity, underpinned by an exceptional portfolio of assets, will be a significant milestone for the Company. We have a targeted work programme in place for the coming year, on which we expect to deliver, pending developments, during the period. 'We believe that the Company provides a well-balanced blend of production and exploration across a variety of metals at the same time as a number of catalysts for a potential rerating.'

PRECIOUS METALS PRODUCTION JOINT VENTURE

The Western Milling LLC joint venture is making good progress and a meeting is scheduled with the regulatory authority NDEP (Nevada Department of Environmental Protection) in mid-January to review plans and incorporate any modifications required by the NDEP to facilitate consent for precious metals production start-up. Production can only commence after receipt of a NDEP permit but construction can begin prior to consent. The aim of the review meeting with NDEP is to give the joint venture the confidence to start construction. Subject to weather conditions, groundwork will begin with first concrete poured at the end of February. The first phase of the project will consist of gravity-separating spoil material, initially from the Mineral Jackpot area where the Company constructed an access road in 2022, to produce gold and silver concentrates for on-sale to a refinery. Residues from gravity separation will be stored for further processing via a leaching plant, to be constructed as a second phase. The leaching project will also process tailings material, initially from the OMCO Mine area on the Olympic Gold project where a JORC-compliant resource report was successfully commissioned late last year. Great Western aims to produce first precious metals concentrates this year, starting on a small scale and building up volumes as rapidly as possible. Numerous further piles of material are available for processing on the Company's claims and will be assessed as the project evolves. The joint venture will also acquire material for processing from third parties once the mill is up and running. The mill will be capable of handling shallow-mined ore as well as pre-mined material.

Three holes were drilled at Trafalgar Hill in summer 2022 and the results are now available after laboratory delays beyond the Company's control. The best result was in hole OMRC013, which contains the longest intercept of anomalous gold yet identified at Trafalgar Hill (21.34 m at 0.107 g/t Au from 83.82 m, Table 1). This intercept occurred at the anticipated position in the hole, approximately 10 m below the contact of the host rhyolite with the overlying mafic unit. No high grades were achieved from these holes but, along with a shorter intercept in OMRC012, they show that the Trafalgar Hill system remains open to the south and it will be further explored.

MINERAL JACKPOT

In 2022 Great Western carried out the first ever drilling at the high-altitude Mineral Jackpot group of five historic gold and silver mines, which were worked by hand in the decades around 1900 and where the Company believes there are considerable volumes of gold and silver ore yet to be recovered. As previously reported, a shallow intercept of 3.04 m grading 418.00 grams/tonne silver and 0.554 grams/tonne gold was encountered from 4.57 metres in hole MJRC004 and follow-up drilling is planned for this year. Depending on the results, and subsequent successful estimation of resources and reserves, small-scale mining would be relatively straightforward at these depths and material recovered could be processed through the milling joint venture. Mineral Jackpot was mined in the past through extensive underground workings, many of which are still accessible and offer the opportunity for direct observation of mineralisation in situ, which could be a more effective exploration tool than RC drilling. Accessing these legacy workings is a potentially hazardous activity, so the Company is investigating a process with a contractor which specialises in carrying out such work safely

OMCO (Olympic Gold Project)

In 2022, drilling intersected the main OMCO vein for the first time, in an area mapped as containing unmined portions of this structure. This previously reported intercept contained 6.10 m at 2.682 g/t gold from 38.10 m, including 1.52 m at 8.110 g/t gold and 1.52 m at 1.74 g/t gold. The discovery can be expanded on in the near term by drilling angled holes from the same permitted pad position, which will be a priority for early in 2023. If successful, additional holes could subsequently be drilled at similar locations on the edge of the mined workings along the full 180 m southwestern perimeter, seeking further extensions to the vein.

Contact:

Great Western Mining Corporation PLC

Brian Hall

Chairman

T: [phone]

Max Williams

Finance Director

T: [phone]

Davy

NOMAD

Euronext Growth Listing Sponsor & Joint Broker

Brian Garrahy

T: [phone]

Novum Securities

Joint Broker

Jon Belliss

T: [phone]

Walbrook PR

PR advisers

Nick Rome

Joe Walker

T: [phone]

(C) 2023 Electronic News Publishing, source ENP Newswire