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    Antidumping duties and China’s playbook: pricing implications for critical minerals

    February 23, 2026|

    Reviewed by Tom Sullivan

    Antidumping duties and China’s playbook: pricing implications for critical minerals

    First reported on MINING.com

    30 Second Briefing

    Antidumping duties under the US Tariff Act of 1930 are proposed as a floating “price-gap” mechanism to counter China’s below-cost exports of rare earths and other USGS-designated critical minerals, with duties rising automatically as Chinese export prices fall. Erik Groves, corporate strategy and in-house counsel at Morgan Companies, argues this would extend the logic of the US Department of Defence’s floor-price agreement with MP Materials at Mountain Pass without Washington acting as buyer of last resort. Coordinated antidumping actions by the US, EU, Canada, Australia, Japan and South Korea could establish de facto price floors across multiple Western markets.

    Technical Brief

    • Predatory under-cost exports become uneconomic, as deeper price cuts trigger higher compensatory levies at the border.
    • For mine developers, such duties would effectively harden revenue assumptions against state-backed supply flooding in feasibility models.

    Our Take

    Mountain Pass and other rare earths assets feature heavily across the 141 Policy stories in our database, signalling that critical minerals policy is now being framed as much around trade-defence tools as around permitting and subsidies.

    The US$12‑billion ‘Project Vault’ stockpile proposal in the 12 Feb 2026 related piece shows Washington pairing potential antidumping measures with physical inventory strategies for rare earths and other critical minerals, which could cushion domestic players like MP Materials against future price shocks from China.

    With both Canada and Australia listed among the key countries here and in our other critical minerals coverage, any US move to use Tariff Act antidumping powers on rare earths would likely push allied producers to align standards and pricing benchmarks to keep access to the US market while avoiding being caught in China‑targeted actions.

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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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