Great Southern Mining Limited announced an exploration update at its Duketon Gold Project, located 60km north of Laverton, Western Australia. In preparation for the next round of drilling, which is due to commence in late 2022 to early 2023, the Company has completed further targeting work proximal to known gold mineralisation within the Southern Star, Amy Clark and Golden Boulder prospect areas. Soil geochemical surveys have defined new targets along strike to the south of the Southern Star prospect and extended previously defined gold anomalism at the Amy Clarke prospect by a further 1.4km to 5km.

Field mapping and rock chip sampling at the Golden Boulder prospect has defined at least three trends of historic gold workings with intense alteration noted over an area >3km in length and 500m wide. This area has had very limited historic drilling but will likely become a key focus for GSN's 2023 drilling programs. Southern Star sits on a well-endowed gold trend that hosts RRL's Rosemont and Ben Hur deposits (>1Moz and >350koz respectively). Ben Hur, which is located just 4km north of Southern Star, is due to be developed in RRL's current mine schedule.

Mineralisation defined to date at Southern Star is open along strike and at depth with the potential to expand mineralisation into a sizeable mineral resource considered highly probable. Best results from the Company's drilling to date include: 69m @ 1.1 g/t Au from 39m, including a higher-grade core of 10m @ 3.5g/t Au including 2m @ 12.0g/t Au in 22SSRC00061; 59m @ 2.1 g/t Au incl. 9m @ 4.5 g/t Au and 16m @ 3.2 g/t Au from 53m in 21SSRC00092; 68m @ 1.9 g/t Au from 61m, including 4m @ 15.3 g/t Au from 89m and 5m @ 7.0 g/t Au from 114m in 21SSRC0036; 46m @ 1.2 g/t Au incl.

11m @ 3.4 g/t Au from 40m in 21SSRC00011; 7m @ 13.9 g/t Au incl. 1m @ 91.7g/t Au from 123m in 21SSRC0017; 17m @ 7.0 g/t Au from 111m incl. 2m @ 56.7g/t Au in 21SSRC0039.

Extensive soil surveys have now been completed both north and south of Southern Star over the favorable quartz dolerite host rock with the objective of delineating drill targets along strike beyond the already defined 1km long zone of gold mineralisation. Southern Star southern soil results: Results in this announcement relate to a 497-sample soil program completed along strike to the south of Southern Star. Samples were taken on a 100m wide line spacing, 25m apart over a 4km strike of the prospective quartz dolerite geology.

Assay results indicate a strong 700m long gold in soil anomaly in the southern portion of the survey area with a peak gold assay of 158 ppb. Other key pathfinder elements, including arsenic and antimony, form a very coherent trend over a 1.7km strike, which also correlates with the position of the favorable sheared quartz dolerite geology. This rock type is interpreted to be the primary host of high-grade mineralisation at Southern Star.

Sulphur values are also of interest and have been used as an effective tool in ranking and identifying targets due to the high sulphide content of Duketon gold mineralsiation. High-grade mineralisation at Southern Star is associated with strong to intense quartz-albite-carbonate ± sericite alteration, quartz veining and disseminated sulphides (pyrite/pyrrhotite >3%). An area of highly anomalous sulphur (+0.1%) was noted around the core of the aforementioned high arsenic-antimony trend.

The correlation of favorable soil geochemistry overlying the favorable quartz dolerite unit forms a compelling drill target in an area that has seen little to no historical drilling. Next steps: The Company is planning follow up reverse circulation (RC) drill programs in late 2022 to early 2023 to test newly identified geochemical targets along strike from the main mineralised zone of Southern Star. This includes the four targets previously identified along strike to the north.

RC drilling is also planned to test depth extensions to known mineralisation at Southern Star. Amy Clarke Update: A maiden aircore drill program was completed in early 2022, which included a best intercept of 5m @ 8.2 g/t Au, including 1m @ 33.5 g/t Au from 33m in hole 21ACAC147. This hole was located at the southern limit of a previously defined soil anomaly, which prompted GSN to extend the soil geochemical survey further south.

Assays have now been received for this extensional survey which consisted of 298 sites undertaken on a 100m wide line spacing, 50m apart over a prospective strike of ~1.8km. Results show the Amy Clarke gold-in-soil anomaly extending by a further 1.4km to the south, with the gold anomalism now defined over a 5km strike length. The scale of this anomaly bodes well for a large underlying mineralised gold system at Amy Clarke.