President Donald Trump spent most of 2025 hacking away at large parts of the federal government. His administration fired, bought out, or otherwise ousted hundreds of thousands of federal employees. Entire agencies were gutted. By so many metrics, this year in politics has been defined more by what has been cut away than by what’s been added on.
One tiny corner of regulation, however, has actually grown under Trump: the critical minerals list. Most people likely hadn’t heard of “critical minerals” until early this year when the president repeatedly inserted the phrase into his statements, turning the once obscure policy realm into a household phrase. In November, the U.S. Geological Survey quietly expanded the list from 50 to 60 items, adding copper, silver, uranium, and even metallurgical coal to the list. On Monday, South Korean metal processor Korea Zinc announced that the federal government is investing in a new $7.4 billion zinc refinery in Tennessee, in which the Department of Defense will hold a stake.
But what even is a critical mineral?
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