The United States has expanded its critical minerals list to include copper and metallurgical coal, underscoring Washington’s renewed drive to strengthen domestic supply chains vital to national security, manufacturing and clean energy technologies.
The Department of the Interior’s (DoI) updated list, released last week, will influence federal investment, permitting decisions and research funding, while providing a broader blueprint for the government’s minerals strategy aimed at reducing reliance on foreign imports — particularly from China, reported Reuters.
The revised list now serves as a “blueprint for US efforts to secure materials essential for defence, manufacturing and clean energy technologies.”
It determines which mining projects qualify for federal incentives, shapes national stockpiling priorities, and signals to private investors the sectors where the government anticipates long-term strategic value.
Copper’s inclusion marks a strategic shift given its central role in the clean energy economy, from electric vehicles and renewable power infrastructure to data centres. Metallurgical coal, used to produce coke for steelmaking, remains essential for the construction and manufacturing industries.
Officials and industry analysts note that increasing domestic production is intended to shield the US from future supply disruptions or export restrictions imposed by foreign competitors such as China, which dominates global refining capacity for many critical minerals.
The DoI emphasised that critical minerals underpin key industries, drive technological innovation and support critical infrastructure vital to a modern economy.
Freeport-McMoRan, one of the country’s largest copper producers, operates seven mines across the US and controls one of its two remaining copper smelters.
The company has previously estimated it could earn more than US$500 million a year in tax credits under the 2022 Inflation Reduction Act if copper were declared a critical mineral.
Its US operations face higher production costs due to lower-grade ore compared with international sites, making the domestic segment its least profitable region.
Including copper on the list represents a significant boost to the company’s long-term position and to broader US mining competitiveness.
Adding metallurgical coal also reflects President Donald Trump’s pro-fossil fuel policies.
While the administration continues to support coal’s role in national energy and industrial strategies, several metallurgical coal mines in the US have faced closures amid global oversupply and declining exports.
Beijing’s decision earlier this year to impose an additional 15 per cent tariff on US coal imports has further pressured the sector.
Industry groups welcomed the latest update.
National Mining Association president and CEO Rich Nolan said in a statement cited by Reuters that the organisation will continue to advocate for a wider list “to ensure that the US has the abundant domestic resources it needs, when it needs them”.
The updated US Geological Survey list also includes potash, rhenium, silicon and lead.
Analysts believe the expanded classification reflects Washington’s broader push to integrate domestic resource development into national economic and geopolitical strategy — particularly in the face of intensifying global competition for energy transition minerals.
