The United States faces a strategic vulnerability that has moved from niche policy concern to front-page national security issue: its dependence on foreign sources for critical minerals. Rare earth elements, gallium, germanium, cobalt, lithium, and dozens of other materials are essential to semiconductors, electric vehicle batteries, wind turbines, military electronics, and the digital infrastructure that underpins the modern economy. China controls the majority of global rare earth processing capacity. The Democratic Republic of Congo dominates cobalt supply. That concentration creates fragility that US policymakers are now spending tens of billions of dollars to address.
One of the most promising — and underappreciated — pathways to domestic critical minerals supply doesn't involve opening new mines. It involves recovering these materials from secondary sources: end-of-life electronics, industrial waste streams, coal ash, mining tailings, and recycled metals. For companies in the construction, demolition, and recycling sectors, this shift in national policy represents both a business opportunity and a signal about where the materials economy is heading.
What Are Critical Minerals and Why Do They Matter?
The US Geological Survey and the Department of Energy maintain official lists of "critical minerals" — materials identified as essential to national economic and defense interests and at significant risk of supply disruption. The current USGS critical minerals list includes 50 minerals and mineral groups, ranging from well-known names like lithium and cobalt to more obscure materials like indium, tellurium, and the 17 rare earth elements that span the periodic table from lanthanum to lutetium.
These materials share a common profile: they're used in small but irreplaceable quantities in high-technology applications, they have no easy substitutes, and US domestic production covers only a fraction of national demand. For the most critical materials, the gap is stark. The US currently imports 100 percent of its gallium — a byproduct of aluminum production essential for semiconductors and military electronics — with China being the dominant global supplier. China's government has imposed export restrictions on gallium and germanium exports, a preview of the supply disruption risk that defense and technology planners have been warning about for years.
Rare earth elements (REEs) present a similar picture. Despite the term "rare earth," these 17 elements are not particularly rare in the Earth's crust — they just don't concentrate into economically mineable deposits as readily as iron or copper, and processing them requires chemical separation techniques that China has mastered at scale. The US has significant rare earth ore deposits (Mountain Pass in California is the only currently operating US mine), but the processing and separation capacity to convert ore into usable oxide and metal products is almost entirely offshore.
The Secondary Source Opportunity
Primary mining — finding new deposits and extracting ore from the ground — is one path to domestic supply. But it's slow, expensive, and faces significant permitting and environmental hurdles. The average time from discovery to production for a new US mine is over 20 years. That timeline doesn't match the urgency of the supply chain problem.
Secondary recovery — extracting critical minerals from materials that are already above ground — offers a faster, lower-impact alternative. Several secondary source streams are particularly promising:
End-of-Life Electronics (E-Waste)
Electronic waste contains significant concentrations of valuable and critical materials. A ton of circuit boards contains more gold than a ton of gold ore and more copper than a copper mine's average ore grade. Rare earth elements are present in hard disk drive magnets (neodymium, dysprosium), phosphors in displays and lighting (europium, terbium, yttrium), and catalytic converters (cerium, lanthanum). The challenge is that these materials are dispersed in tiny quantities across complex, multi-material assemblies — recovering them requires sophisticated chemical processing, not just mechanical sorting.
The US generates approximately 7 million tons of e-waste annually, of which only about 15 percent is formally recycled. That gap represents a massive unmined deposit of critical materials sitting in landfills, storage units, and informal collection streams. DOE and EPA programs are working to build the infrastructure to capture more of this material and process it domestically.
Coal Combustion Residuals and Mine Waste
Counterintuitively, the legacy of coal mining and combustion contains significant rare earth concentrations. Coal formed over geological time by accumulating organic material from soils and plants that naturally incorporated trace rare earths. Combustion concentrates these elements in fly ash. The Appalachian coal basin, including parts of Georgia and neighboring states, has deposits of coal fly ash with REE concentrations that are being evaluated for economic recovery.
DOE's National Energy Technology Laboratory (NETL) has invested heavily in developing processes to extract rare earths from coal and coal byproducts. This dual-purpose approach addresses both the legacy environmental problem of coal waste and the critical minerals supply problem — treating an environmental liability as a resource.
Recycled Metals and Industrial Waste Streams
The recycled metals stream — scrap steel, aluminum, copper, and mixed metals from construction demolition — contains trace quantities of critical materials that are currently lost during melting and refining. Advanced hydrometallurgical and pyrometallurgical processes can recover indium, gallium, germanium, and REEs from these streams if the processing infrastructure exists to capture them.
For construction and demolition recyclers, this is a forward-looking opportunity. Today's scrap metal stream is primarily valued for bulk metal content. As critical mineral recovery technology matures and the economic case improves, the same streams may yield additional value from trace critical mineral content. Companies that are well-positioned in the recycled metals collection and processing chain will be better positioned to participate in this emerging value stream.
DOE Funding: The Federal Investment Landscape
The federal government has made critical minerals supply chain a major investment priority. The Bipartisan Infrastructure Law, the CHIPS and Science Act, and the Inflation Reduction Act together authorized tens of billions of dollars for domestic critical minerals production and processing. The Department of Energy has been the primary vehicle for deploying this funding through competitive grant programs (Funding Opportunity Announcements, or FOAs).
Key DOE programs relevant to critical minerals recovery include:
Office of Manufacturing and Energy Supply Chains (MESC): Administers grants for domestic supply chain development including critical minerals. Has funded demonstration projects for REE recovery from coal waste and e-waste processing.
Advanced Research Projects Agency-Energy (ARPA-E): Funds high-risk, high-reward research on critical materials recovery. Programs like REMIX (Rare Earth Minerals from Industrial Xchangers) have supported novel recovery approaches from secondary streams.
Office of Fossil Energy and Carbon Management (FECM): Funds REE recovery from coal and coal byproducts through NETL, with active FOAs for pilot-scale and demonstration projects.
Loan Programs Office (LPO): The Advanced Technology Vehicles Manufacturing (ATVM) loan program and Title XVII loan guarantee program have been extended to support critical minerals projects, providing debt financing alongside equity investment.
For companies interested in pursuing DOE funding, the grants.gov platform and DOE's EERE Exchange portal list active and upcoming FOAs. These opportunities are competitive and require technical proposals, but DOE has made explicit efforts to include small businesses and minority-owned enterprises in its outreach, particularly through SBIR/STTR (Small Business Innovation Research / Small Business Technology Transfer) programs that set aside funding for small businesses.
National Security Dimensions
The national security case for domestic critical minerals supply is well-established in defense planning circles. The Pentagon's supply chain vulnerability assessments have consistently identified rare earth elements, gallium, and other critical materials as areas of strategic risk. Military applications that depend on these materials include:
- Neodymium-iron-boron permanent magnets in precision-guided munitions, aircraft actuators, and submarine propulsion systems
- Gallium arsenide and gallium nitride semiconductors in radar systems, electronic warfare equipment, and communications
- Cobalt in high-temperature alloys used in jet engines and gas turbines
- Lithium in batteries for unmanned systems, forward operating base power, and next-generation soldier systems
The Defense Production Act has been invoked to support domestic critical minerals production, and the Department of Defense has funded domestic production and stockpiling programs through the Defense Logistics Agency's Strategic Materials program. DoD is an active customer for domestically sourced critical minerals and has signaled willingness to use long-term offtake agreements to support new domestic supply chain investments — a significant de-risking mechanism for private investment.
For contractors with government contracting capabilities — particularly those with minority-owned, DBE, or 8(a) certifications — DoD's set-aside programs for small businesses in critical supply chains represent an emerging opportunity as the department works to build supply chain resilience among a diverse contractor base.
What This Means for the Recycling and Construction Sector
For companies operating in construction, demolition, and materials recycling, the critical minerals policy shift matters in several ways:
Evolving value of recycled materials: Scrap metal, electronic waste, and industrial byproducts may carry additional value as critical mineral recovery technology scales. Companies that collect and process these materials have upstream positioning in an emerging value chain.
Partnership and teaming opportunities: Technology companies, national laboratories, and universities developing critical mineral recovery processes need partners with materials collection infrastructure, processing facilities, and logistics capabilities. Recyclers and contractors represent natural teaming partners for demonstration projects and pilot programs.
Grant and program access: Small businesses — particularly minority-owned firms — have specific set-asides in DOE and DoD funding programs. Companies that develop technical capabilities in recycling, materials processing, or environmental services may be well-positioned to pursue these programs.
Long-term materials economics: Domestic critical minerals supply chain development will take a decade or more to mature. Companies that invest in understanding this space now — building relationships, developing relevant capabilities, and tracking policy development — will be better positioned as the market develops than those who engage after the fact.
At Rare Earth Ltd, we track developments in recycled materials, sustainable construction, and government contracting closely. Our work in recycled aggregate supply and government contracting services positions us at the intersection of these emerging opportunities. Contact us to discuss how your project or business can benefit from evolving materials policy and funding programs.