Southern Cross Gold Ltd. announced that the hole intercepted 11 high-grade vein sets, including three new vein sets at depth with three additional > 100 g/t AuEq x m intersections and two top 10 results for Sunday Creek (0.7 m @ 604.0 g/t Au and 3.6 m @ 124.8 g/t Au) and included seven assayed intervals of > 50 g/t Au (with three individual assays >900 g/t Au), and four assayed intervals > 2% Sb (up to 19.4% Sb). Drill highlights include: 3.1 m @ 39.9 g/t AuEq (38.2 g/t Au, 0.9% Sb) from 452.5 m, including: 1.4 m @ 87.9 g/t Au Eq (84.6 g/t Au, 1.7% Sb) from 454.2 m. 0.4 m @ 71.2 g/t AuEQ (70.3 g/t Au, 0.,5% Sb) from 475.4 m, including: 0.1 m @ 235.2 g/t AuCEq (235.0 g/t Au,0% Sb) from 475.,4 m. 0.7 m @ 604.,0 g/t AuEq ("604.0 g/t Au), 0.0% Sb) from 555.7 m, including: 0.5 m @ 979 g/t AuEq(979 g/t Au, 0".0% Sb) from 575.1 m, including: 0.3 m @ 43.3 g/t AuEq.42.5 g/t AuEq from 675.1 m. 3.6 m at 124.8 g/t goldEq (124.8 g/t Au, 0.'0% Sb) from 1,120.4 m. 0.2 m @ 1,030 g/t AuEq®? (1,030 g/t Au, 0 the0% Sb) from1,121.0 m. 0.2 m at 36.0 g/t AuEQ ("36.0 g/t Au", 0.0% Sb") from 1,180.8 mTen drill holes at Sunday Creek at are being processed and analysed, with four holes in progress, Mawson owns 96,590,910 shares of SXG (49.6%), valuing its stake at A$270.4 million (C$247.0 million) based on SXG's closing price on June 12, 2024 AEST.

One drill hole (SDDSC118) is reported from the Rising Sun prospect. The hole was designed to test the hanging wall position of one high-grade vein set and drill to depth further east than tested previously. The hole intercepted 11 mineralized structures, eight of which are high-grade.

SDDSC118 is the deepest hole on the project and extended high grade mineralization 80 m down dip (3.6 m @ 124.8 g/t AuEq). The hole intersected multiple high-grade structures, including seven assayed intervals of > 50 g/t Au (up to 1,200 g/t Au), and four assayed intervals > 2% Sb (up to 19.4% Sb), with three additional > 100 g/t AuEq x m intersections and two top 10 results for Sunday Creek (0.7 m @ 604.0 g/t Au and 3.6 m @ 124.8 g/t AuEq). Three new vein sets were defined, and mineralization was extended 80 m below the exploration target.

The hole traversed from the hanging wall to footwall of the dyke/breccia host and provided continuity information in the plane of the eight known vein sets with three new discoveries at depth including 3.6 m @ 124.8 g/t AuEq (including 0.8 m @ 558.2 g/t AuEq) from 1,120.4 m and 0.2 m @ 36.0 g/t AuEq from 1,180.8 m. High-grade continuity is best demonstrated in vein set RS15 (Figure 3) where SDDSC118 drilled 0.7 m @ 604.0 g/t AuEq (604.0 g/t Au, 0.0% Sb) from 555.7 m (estimated true width "ETW" 0.4 m) including 0.5 m @ 979.0 g/t AuEq from 555.7 m. This intersection was located 54 m down-plunge of the previously reported SDDSC100 (4.7 m @ 76.6 g/t AuEq) and 42 m up- plunge from the previously reported SDDSC082 (4.3 m @ 72.3 g/t AuEq), increasing confidence in the definition of the high-grade core of RS15. Further discussion and analysis of the Sunday Creek project by Southern Cross Gold is available on the SXG website at . No upper gold grade cut is applied in the averaging and intervals are reported as drill thickness.

During future Mineral Resource studies, the requirement for assay top cutting will be assessed. During future Mineral Resource studies. The requirement for assay top cutting will been assessed.

Mawson considers that it is appropriate to adopt the same gold equivalent variables as Mandalay Resources Ltd. in its Mandalay Technical Report, 2024 dated March 28, 2024. Highlights from SDDSC118 include: 3.1 m @ 39.9 g/t AuEq (38.2 g/t Au, 0.9% Sb) from 452.5 m, including: 1.4 m @ 87.9 g/t AuEq (84.6 g/t Au, 1.7% Sb) from 454.2 m, 0.3 m @ 12.6 g/t AuEq (12.0 g/t Au, 0.3% Sb) from 459.3 m, 0.4 m @ 71.2 g/t AuEq (70.3 g/t Au, 0.5% Sb) from 475.4 m, including: 0.1 m @ 235.2 g/t AuEq (235.0 g/t Au, 0.1% Sb) from 475.4 m, 0.2 m @ 8.5 g/t AuEq (7.4 g/t Au, 0.6% Sb) from 487.6 m, 0.4 m @ 12.7 g/t AuEq (12.6 g/t Au, 0.1% Sb) from 502.2 m, o 0.4 m @ 46.3 g/t AuEq (44.8 g/t Au, 0.8% Sb) from 540.4 m, 0.7 m @ 604.0 g/t AuEq (604.0 g/t Au, 0.0% Sb) from 555.7 m, including: 0.5 m @ 979.0 g/t AuEq (979.0 g/t Au, 0.0% Sb) from 555.7 m, 0.1 m @ 12.2 g/t AuEq (12.2 g/t Au, 0.0% Sb) from 568.6 m, 4.7 m @ 4.6 g/t AuEq (3.5 g/t Au, 0.6% Sb) from 620.4 m, including: 1.4 m @ 11.0 g/t AuEq (9.1 g/t Au, 1.0% Sb) from 621.2 m, 0.6 m @ 5.0 g/t AuEq (4.0 g/t Au, 0.5% Sb) from 624.6 m, 0.1 m @ 193.2 g/t AuEq (193.0 g/t Au, 0.1% Sb) from 627.2 m, 0.4 m @ 11.7 g/t AuEq (11.0 g/t Au, 0.4% Sb) from 632.7 m, 0.1 m @ 27.4 g/t AuEq (26.7 g/t Au, 0.4% Sb) from 657.9 m, 0.2 m @ 28.7 g/t AuEq (23.4 g/t Au, 2.8% Sb) from 663.4 m, 0.5 m @ 6.3 g/t AuEq (5.1 g/t Au, 0.6% Sb) from 671.5 m, 1.3 m @ 43.3 g/t AuEq (42.5 g/t Au, 0.4% Sb) from 675.1 m, including: 0.3 m @ 201.9 g/t AuEq (200.0 g/t Au, 1.0% Sb) from 675.1 m, 0.4 m @ 10.0 g/t AuEq (10.0 g/t Au, 0.0% Sb) from 711.6 m, 0.8 m @ 6.5 g/t AuEq (6.5 g/t Au, 0.0% Sb) from 970.6 m, 3.6 m @ 124.8 g/t AuEq (124.8 g/t Au, 0.0% Sb) from 1,120.4 m, including: 0.8 m @ 558.2 g/t AuEq (558.2 g/t Au, 0.0% Sb) from 1,120.4 m, including 0.2 m @ 1,200 g/t AuEq (1,200 g/t Au, 0.1% Sb) from 1,120.4 m, 0.2 m @ 1,030 g/t AuEq (1,030 g/t Au, 0.0% Sb) from 1,121.0 m, 0.2 m @ 36.0 g/t AuEq (36.0 g/t Au, 0.0% Sb) from 1,180.8 m.