Great Southern Mining Limited has completed a detailed structural geology interpretation for the northern portion of the Company's 100% owned Duketon Gold Project, north of the town of Laverton in Western Australia (covering Exploration License E38/3518). This new interpretation, which was completed by GSN's Technical Consultant Marcus Willson, has highlighted five new, high priority gold exploration targets. These new targets are in addition to existing prospects with known high grade gold mineralisation, including Southern Star, Amy Clarke and Golden Boulder.

GSN is planning to recommence drilling at the Duketon Gold Project in the first quarter of calendar year 2023. New High Priority Gold Targets at Duketon Gold Project: GSN has completed a detailed structural geology interpretation of the northern portion of the Duketon Gold Project. This interpretation was completed by consulting structural geology expert and Technical Consultant, Marcus Willson, and compiled using high resolution geophysical data, field mapping, existing drilling and publicly available studies on the Duketon Belt.

The foundation to this structural interpretation is an orogenic reconstruction of the belt to define deep seated structures and gold bearing lineaments. Consequential to this interpretation was the delineation of five new, high priority gold target areas. All of these targets sit along mineralised trends which host gold deposits to the north within Regis Resources' Duketon Gold Mining project.

A description of the five targets is provided below: Southern and eastern extension (possible splay) of the Golden Boulder prospect which hosts approximately 3km of historic gold working. Gold bearing reactivated faults (inversion faults) are interpreted to plunge to the south. The onset of a hard iron laterite crust over the southern portion of this target area is interpreted to geochemically mask potential underlying gold anomalism and to have impeded historic gold prospecting.

Previous aircore drilling has rarely penetrated through the hard laterite and is therefore considered ineffective. The style of mineralisation is expected to be narrow, high-grade shear and quartz vein hosted gold similar to historic gold workings to the north Located on the Garden Well Trend. Aeromagnetic images show major north-south structures being offset by later NNW-SSE structures creating an interpreted analogous structural setting to Regis Resources' +3Moz Garden Well gold deposit to the north.

Limited historic drilling is considered to be well south of the area of interest, therefore key structures remain untested. This target is located to the south of the existing Amy Clarke prospect along the Erlistoun Trend (host to the 320koz Erlistoun gold deposit to the north). It is interpreted to be on the hanging wall position to a major, shallow dipping thrust fault with an underlying deep intrusive centre which interacts with multiple north-south and northeast trending structures.

Interpreted to be a ‘pop-up' structure incorporating hanging wall anticlines and shallow thrust faults with evidence of underlying granites. Historical workings line a ridge running through this area on an interpreted back-thrust fault. There is limited historic drilling and previous surface geochemistry is considered ineffective due to transported cover.

This target is located on the interpreted hanging wall to a shallow thrust, which to the north is understood to be the controlling structure of the Garden Well deposit. Focus in the area will be on cross-cutting NNW-SSE fault structures. High Impact Drilling Planned to Commence from March Quarter 2023: GSN is planning an intensive year of drilling at the Duketon Gold Project, commencing in the March quarter of 2023.

The previous two years of target generation and early-stage exploration have laid the foundation for high impact drilling on prospects with known high-grade gold mineralisation. Planned drilling programs are detailed below. Southern Star Gold mineralisation at the Southern Star prospect has been defined over an 800m strike extent and remains open in nearly every direction.

GSN plans to expand upon current mineralisation by testing four key areas including: · Depth extensions to known mineralisation below intercepts, such as 10m @ 3.1 g/t Au including 3m @ 8.6 g/t Au (21SSRC0012); · Directly north of the main mineralisation zone where geochemical surveys have delineated four gold anomalies; · A 700m long geochemical anomaly to the south of the current mineralisation zone; · A parallel trend to the west, which GSN interprets to be the trend hosting Regis Resources' Ben Hur deposit just 4km to the north. Golden Boulder area: The Golden Boulder area was identified by GSN in 2021 as a high priority prospect with over >3km of historical workings over several parallel and stacked trends. Historic drilling in the area is sparse and shallow, averaging just 40m below surface.

Standout intersections from GSN's first pass 16- hole drilling campaign in 2021 returned intercepts including: 5m @ 3.3 g/t gold from 49m, including 1m @ 12.3 g/t gold and 1m @ 1.2 g/t gold from 73m in 21GBRC0001; 5m @ 1.2 g/t gold from 103m, including 1m @ 4.1 g/t gold in 21GBRC0007; 7m @ 1.2 g/t gold from 121m, including 2m @ 3.3 g/t gold in 21ERRCC0005. Rock chip samples collected along strike for historic working included grades of 241gt gold and 103gt gold. The Company is predicting narrow high-grade shear or vein hosted gold mineralisation with stacked and parallel lenses.

GSN in planning aircore fence line drilling over approximately 3km of strike to vector in on zone of high-grade and contiguous zones of mineralisation. Amy Clarke A maiden aircore drill program was completed in early 2022, which included a best intercept of 5m @ 8.2 g/t gold, including 4m @ 12.5 g/t gold from 33m in hole 21ACAC147. This program, along with geochemical soil surveys has defined a 5km long gold anomaly.

Follow-up RC drilling has been planned around zones of higher grade (proximal to hole 21ACAC147) to gain a better understanding on the controls on gold mineralisation. Further aircore drilling has also been planned over the recently defined 1.4km extension to the gold and pathfinder element anomaly resulting from a geochemical soil survey in 2022.