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    MMG’s Khoemacau copper mine expansion: design and throughput notes for planners

    December 30, 2025|

    Reviewed by Tom Sullivan

    First reported on International Mining – News

    30 Second Briefing

    MMG’s board has approved the feasibility study and committed to construction of a major expansion at the Khoemacau Copper Mine in Botswana, targeting annual output of 130,000 t of copper in concentrate. The project will also lift associated silver production above current levels, positioning the operation as a large-scale polymetallic producer in the Kalahari Copper Belt. For mine planners and process engineers, the step-up in concentrate tonnage will drive requirements for upgraded underground development, hoisting, and concentrator throughput, as well as expanded tailings and water management infrastructure.

    Technical Brief

    • Board-level approval of the feasibility study moves the Khoemacau expansion into funded construction execution.
    • Commitment to construction implies near-term mobilisation of underground development contractors and process plant upgrade teams.
    • Expansion scope will require reconfiguration of mine scheduling, haulage profiles and backfill or waste handling strategies.
    • Process plant changes are expected to include higher milling throughput and upgraded flotation, thickening and filtration capacity.
    • Tailings storage and water supply systems will need staged capacity increases to match the higher concentrate output.
    • Power demand at Khoemacau will rise, driving grid connection upgrades or additional on-site generation and distribution.

    Our Take

    Copper items make up a significant slice of the 462 Mining stories in our database, but Botswana features far less frequently than jurisdictions like Chile or the DRC, so an MMG Ltd expansion at Khoemacau signals growing weight for southern African copper in project pipelines.

    Among the 883 tag-matched ‘Projects’ and ‘Contract Award’ pieces, copper–silver combinations like Khoemacau tend to be associated with underground or deeper orebodies, which usually implies higher upfront development complexity but more stable long‑term grade profiles once established.

    MMG Ltd appears in far fewer of our recent copper project items than some of the largest diversified miners, so committing to expansion in Botswana likely reflects a deliberate move to rebalance its portfolio towards long‑life base metals outside its traditional strongholds.

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    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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