Critical Minerals in U.S. Mine Waste: Promise and the Price of Access

Summary:

• Groundbreaking research reveals that mine waste in the U.S. contains essential minerals to reduce imports significantly.

• Essential minerals are being thrown away as mine waste, including those crucial for energy, defense, and technology.

• Extracting minerals from mine waste could significantly reduce the U.S.’s reliance on imports and revolutionize the industry.

It turns out that America has been sitting on a goldmine- literally. Groundbreaking research in the journal Science has validated that the mine waste in the U.S. contains sufficient critical minerals to cut down to a significant percentage its imports. The catch? A whole different story is getting to them.

Gem In Rubbish

The crazy bit here is that Colorado School of Mines research in the journal Science discovered that almost all the essential minerals that the U.S. requires in its energy supply, defense, and technology are already being dug up. It is just being thrown away.

What Is Going To Waste?

We refer to cobalt, lithium, gallium, germanium, and to the rare earths, such as neodymium and yttrium – all of them are being lost as tailings, the waste products of the daily mining of gold and zinc throughout the nation.

The Stats Are Appalling

Every year, hundreds of millions of tonnes of aluminum, lead, copper, nickel, and cobalt are sent directly into the mine tailings of the United States – amounts that actually are larger than those the country imports of such materials in a single year.

Only 10% Were Capable

This one will put you to a halt. Even to retrieve less than a tenth of the cobalt that is already being wasted due to mine waste in the US would be sufficient to service the domestic battery market. Just 10%. This is the amount of waste.

America’s Import Problem

In 2024, the U.S. imported 80 percent of its rare earths, 100 percent of its gallium and natural graphite, and 48 to 76 percent of its lithium, nickel, and cobalt, all directly from the U.S. Geological Survey.

Who Determines The Supply?

The 2025 USGS Mineral Commodity report indicates that currently, China provides over half of the U.S. demand of 21 nonfuel mineral commodities and refining capacity of cobalt, graphite, and rare earths, surpassing global output.

Such As Salt In Bread Dough

Professor Elizabeth Holley of the Colorado School of Mines explained that extracting these minerals is like fishing out of bread dough, and will demand research, development, and solid policy backing.

The Game Is Changing With New Tech

The silver bullet is that bioleaching, ligand-based extraction, and electrochemical separation breakthroughs are currently enabling the extraction of rare earths directly out of the current tailings- no new drilling or explosions necessary.

A Federal Push Forward

In July 2025, the U.S. Department of the Interior released a Secretary’s Order to guide agencies to simplify regulations and revamp guidance to facilitate critical mineral recovery projects out of mine waste throughout the country.

A Long Road Ahead

The mining projects in the U.S. have the longest time from exploration to production, which is 29 years, the second longest in the world. Quick permitting, liability insurance, and privatization of investment are essential to development.