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The U.S. Has More Copper Reserves Than China, Yet Nobody Can Refine a Single Ounce – What’s Going Wrong?

In the heart of the American Southwest, vast copper reserves sit untapped, even as the global demand for the metal rises. The United States is home to more copper than any other nation, including ...
AZ Central

Trump says reliance on imported copper leaves U.S. vulnerable, orders review of policies

President Donald Trump ordered the Commerce secretary to compile a report about whether U.S. reliance on foreign copper threatens national security. In his order, the president sought policy ...

Cheaper, cleaner copper technology offers a lifeline as Mount Isa weighs uncertain future

Copper production in outback Queensland is facing a ticking clock, but researchers say a new refining process developed at ...
The New York Times

WAY REVOLUTIONIZE REFINING OF COPPER.; Two Cornell Students Discover Process Which Professors Say Will Reduce Cost One-half.

Special to The New York Times. TimesMachine is an exclusive benefit for home delivery and digital subscribers. About the Archive This is a digitized version of an article from The Times’s print ...