GREAT WESTERN MINING CORPORATION PLC ('Great Western' or the 'Company') OMCO DRILLING RESULTS

Great Western Mining Corporation PLC (AIM - GWMO, Euronext Growth - 8GW) is pleased to announce final assay results from its recent drilling programme in the OMCO Mine area of the Olympic Gold Project in Mineral County, Nevada.

HIGHLIGHTS

OMCO Mine vein intercepted

Extension to OMCO Mine now established

Gold recorded over 6.1 metre interval including a best intercept of 8.1 grams/tonne over 1.5 metres

Vein extension is open to southeast, adjacent to old workings, and will be further explored

Assay results from a coarse stockpile at OMCO will support an independent resource estimation

Great Western chairman Brian Hall commented: 'During the summer work seasons of 2021 and 2022, we have drilled a number of holes in the vicinity of the abandoned OMCO Mine that yielded high grades of gold for several decades until the 1940s. At Hole 15, drilled this summer, assay results tell us that we have now intercepted an extension of the OMCO vein itself, one of our key objectives, encountering vein material beyond the known limits of the old workings. Significantly, the trend is open to the southeast in unexplored acreage adjacent to the old workings. This is a very exciting result which will enable us to home in on the potential of the asset. In parallel we have drilled and are evaluating tailings and previously mined material for our processing joint venture and have commissioned an independent UK firm of consultants to report on these. '

STOCKPILE SAMPLING

A previously-mined stockpile of material at the Olympic Gold Project has been selected for processing through the Company's planned joint venture milling operation, in addition to tailings at OMCO and spoil heaps at Mineral Jackpot, already identified. An independent UK-based consultancy has been contracted to prepare a report on these volumes of coarse material together with the substantial tailings at the OMCO Mine. The results announced here include four short, vertical holes which have been drilled into the mineralised coarse stockpile at the mine site this summer, being material produced when the OMCO Mine was still active, but never processed. One bulk sample was taken from each of these holes to provide one sample per hole. Results from these four samples fell in the range 0.219 - 1.113 g/t gold and are set out in table 2 below and are being used in support of the current independent resource estimation process.

Competent Person Statement: The information in this announcement that relates to exploration results is based on information reviewed by Dr James Blight MGeol PhD MAusIMM (CP) who is Exploration Manager of Great Western Mining PLC. Dr Blight has requisite experience 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 in the 2012 Edition of the 'Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves'. Dr Blight is also a 'Qualified Person' as defined in the 'Note for Mining and Oil & Gas Companies' which form part of the AIM Rules for Companies. Dr Blight has reviewed and consented to the inclusion in the announcement of the information in the form and context in which it appears.

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]

The Company has a large acreage position in Mineral County, Nevada. The area consists of rugged, mountainous terrain, which means that large parts of it remain under-explored. Mineral potential is hosted by the regional Walker Lane Structural Belt, the largest structural and metallogenic belt in Nevada, yet one of the least explored in recent times, with gold, silver and copper currently produced in Mineral County. Great Western has seven distinct concession areas which offer the potential for exploiting (1) short term gold and silver deposits and (2) long-term, world-class copper deposits. Six of the Company's properties are in the west of Mineral County and are 100% owned and operated. The Company has an option to acquire a seventh property, the Olympic Gold Project, in the east of the county. Great Western's small exploration team is supported by locally based consultants and contractors. The state of Nevada is generally considered to be one of the world's most mining friendly jurisdictions. While tightly regulated and environmentally conscious, Nevada welcomes the mining industry. Great Western takes care to ensure that its claims are maintained in good standing and all regulations observed. There are numerous gold and silver prospects on the Company's acreage, including extensive historic mine workings which offer the opportunity for secondary recovery. Furthermore, through extensive drilling over a five-year period, GWM has established a Mineral Resource on its first target area known as M2, of 4.3 million tonnes at 0.45% copper, for 19,000 tonnes of contained copper metal. This resource has been independently reported in accordance with JORC guidelines.

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