13 Westgold Resources Limited Annual Report 2024 BIG BELL UNDERGROUND MINE Big Bell continued to perform well during the year, producing 1,140kt of ore at 2.15g/t. As planned, mined grade varied as the mine plan transitioned between the highergrade north side, and the lowergrade, south side of the cave. Big Bell’s next level, 710, also commenced during the fourth quarter of the period, allowing the North side to re-start, albeit at comparatively lower mining rates. Development of the Big Bell Deeps (the long hole open stoping area) access decline progressed during the period, culminating in the Final Investment Decision in November 2023 with a view to significantly extending the mine life, grade, and production profile of the mine. At the time of this report, the commencement of stoping activity at Big Bell Deeps was scheduled for the second half of FY25. Existing Cave Pegmatite Intrusion Ongoing Sub-level Caving Operation Initial 16 year mine life Big Bell LHOS 3000N 4000N 3500N 3000N 4000N 3500N -500mRL -1000mRL -500mRL -1000mRL North South 250 Metres # # 22BBDD0116B 24.5m @ 3.31g/t Au from 543m 24BBDD0026 10.9m @ 3.81g/t Au from 143m Figure 4. Big Bell Mine Plan
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