BHP Group Ltd (BHP) Form 6-K — Oct 20, 2026
BHP has reported a first-time underground block cave Mineral Resource at Olympic Dam of 10,730 Mt at 0.59% copper, alongside by-product grades of 0.19 kg/t U3O8, 0.21 g/t gold and 1 g/t silver. The updated total classified underground Mineral Resource contains an estimated 88.1 Mt of copper, 2.8 Mt of uranium oxide, 103 Moz of gold and 498 Moz of silver. The block cave resource remains at an early stage of assessment and has not been converted to Ore Reserve; Ore Reserves are unchanged from the FY26 Annual Report at 653 Mt at 1.8% Cu for UG Sulphide. Block caving is assumed only to a maximum depth of -1,500 m, and mineralisation remains open at depth.
Key figures
- Total drilling km
- 4070
- Diamond drill holes
- 17557
- Total drilled metres
- 4660620
- Bc gold grade g per t
- 0.21
- Bc silver grade g per t
- 1
- Block cave cutoff cu pct
- 0.35
- Bc uranium grade kg per t
- 0.19
- Metallurgical recovery cu pct
- 94
- Bc mineral resource tonnage mt
- 10730
- Ore reserve ug sulphide cu pct
- 1.8
- Metallurgical recovery u3o8 pct
- 65
- Bc mineral resource grade cu pct
- 0.59
- Classified ug mineral resource cu mt
- 88.1
- Classified ug mineral resource ag moz
- 498
- Classified ug mineral resource au moz
- 103
- Classified ug mineral resource u3o8 mt
- 2.8
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