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    Reshoring minerals as a processing bottleneck: project finance lessons for engineers

    August 11, 2026|

    Reviewed by Tom Sullivan

    Reshoring minerals as a processing bottleneck: project finance lessons for engineers

    First reported on MINING.com

    30 Second Briefing

    Western efforts to reshore critical minerals risk stalling because the bottleneck is processing, not ore supply, with China still refining roughly 50% of global copper and about 90% of rare earths, mining lawyer Rebecca Seidl-Inglesby of Baker Botts warns. She notes a typical copper mine can take 17–30 years from discovery to US production, while new refineries face 18–24‑month product qualification lags, so governments are increasingly stepping in as commercial counterparties via price floors, 10‑year offtakes and equity, as seen in the Pentagon’s multi‑billion‑dollar MP Materials deal. Projects now win funding less on geology than on integrated routes from deposit to refinery and creditworthy offtaker, with capital structures clean enough to pass foreign‑investment scrutiny.

    Technical Brief

    • US permitting can extend copper mine development timelines from 17 years to nearly 30 years.
    • Manufacturers often require 18–24 months of product qualification before accepting output from new refineries.
    • China currently refines about 50% of global copper and roughly 90% of rare earth elements.
    • The US uses multiple channels – energy, war and commerce departments – to deploy federal credit and support.
    • Government equity often carries clawbacks, domestic‑content rules, transfer restrictions and golden‑share consent rights.
    • A single large legacy shareholder can block access to US federal funding despite otherwise attractive project fundamentals.
    • Stockpiling efforts like US “Project Vault” are constrained when insufficient processed material exists to purchase.
    • For explorers, unencumbered offtake, clean capital structures and near‑complete permitting are now preconditions for strategic capital.

    Our Take

    With China handling about 90% of rare earths refining, the emphasis on processing in this piece lines up with other critical minerals coverage in our database, where reshoring debates increasingly hinge on midstream capacity rather than new mine approvals in the US and Australia.

    The 17‑year average development time for a copper mine, stretching towards 30 years with US permitting, contrasts sharply with BHP’s current efforts at Escondida in Chile to squeeze more output and efficiency from existing Tier‑1 assets, suggesting policymakers may lean more on brownfield optimisation than greenfield builds to meet near‑term copper needs.

    The conditional US$400 million commitment to a scandium project in Australia, alongside gallium intercepts at the Springer rare earths project in Ontario, signals that financiers are starting to back niche critical minerals where processing know‑how can create high‑margin, low‑volume supply chains distinct from bulk copper or iron ore plays in our wider Policy coverage.

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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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