Strategic Materials
A critical mineral is not necessarily a rare one. It is a material that is essential to the economy or national security and whose supply chain is vulnerable to disruption. Silver now qualifies on both counts in the United States: essential because modern electrification cannot be built without the most conductive metal on earth, and vulnerable because most of it is mined abroad as a byproduct of other metals.
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Test 1
Essential to economy/security
Test 2
Vulnerable supply chain
U.S. list
Added 2025
U.S. production
Net import reliance
Silver paste conducts electricity out of solar cells. Silver contacts carry current in vehicles, chargers and grid hardware. Silver solders and switches sit inside medical devices and defense electronics. The USGS assessment behind the 2025 list weighed exactly this: there is no drop-in replacement that matches silver's conductivity at scale.
Because roughly 70% or more of mined silver is a byproduct of copper, lead, zinc and gold mining, supply cannot respond quickly to silver's own demand. Production and refining capacity are concentrated outside the United States — Mexico, China and Peru lead mine output — and the U.S. has long been a net importer. Concentration plus inflexibility is the textbook definition of supply-chain risk.
Three curves crossed. Industrial demand, led by solar, climbed to record levels. Mine supply has been roughly flat for a decade. And policy — electrification targets, semiconductor reshoring, defense readiness — made uninterrupted access a matter of state interest rather than a private procurement problem. Sources for this page include the U.S. Geological Survey Mineral Commodity Summaries, the Department of the Interior's 2025 final List of Critical Minerals, the Silver Institute's World Silver Survey, and the International Energy Agency's critical-minerals analysis.
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