Harmony Eva copper project: Metso contract design implications for mine engineers
Reviewed by Joe Ashwell

First reported on Australian Mining
30 Second Briefing
Harmony Gold has advanced its Eva copper project in Queensland by awarding Metso a major equipment contract as the greenfield mine moves towards site construction. The deal covers key comminution and processing plant components, with Metso to supply crushing and grinding equipment sized for large-scale copper throughput at one of Australia’s biggest planned copper developments. The contract signals design lock-in for the process flowsheet and allows detailed engineering, foundation design and construction scheduling to proceed on a firmer basis.
Technical Brief
- Lock-in of OEM packages enables finalisation of concrete foundation loads and dynamic vibration criteria.
- Harmonised equipment selection allows detailed layout of transfer towers, stockpiles and conveyor routing.
- Early vendor engagement reduces interface risk between comminution, flotation and tailings handling systems.
- Standardisation on a single OEM simplifies spares strategy, maintenance planning and operator training regimes.
Our Take
Harmony’s US$1.6 billion build-out of the Eva copper project in Queensland, alongside output from the CSA mine in New South Wales, signals a deliberate pivot in our database from its historic gold focus towards a multi-asset copper profile in Australia.
Metso’s circa-€55 million equipment and services package for Eva, plus its recent launches of the Grande Series screens and third-generation OKTOP® Cooling Tower, indicate the supplier is using Australian copper projects as early adopters for its higher-capacity, process-intense technologies.
Among the 52 copper-tagged pieces in our coverage, Eva stands out as one of the larger greenfield commitments in a mature jurisdiction like Australia, contrasting with many recent copper items that centre on earlier-stage Andean porphyry plays in Argentina and Chile.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.
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