A rally Saturday afternoon brought together neighbors, environmental advocates and elected officials—united in one message: ...

underground copper mine with 5.9-million tonnes mined a year, exclusively on the high-grade exotic, oxide and enriched domains of the Santa Cruz and East Ridge deposits. Copper production has been ...

OMAHA, Neb. — America’s only rare earths mine heard from anxious companies soon after China responded to President Donald Trump’s tariffs this month by limiting exports of those minerals ...