IN a note on the production of electrolytic copper, on p. 371 of NATURE of February 15, it is stated that “Mr. S. Cowper-Coles has hit upon anew plan, in which the copper is deposited on a ...

Arizona is by far the nation’s largest copper producer and has major new prospects edging toward production, but the state and country both face a refining bottleneck. Only two U.S. smelters are ...

China dominates global copper refining, but most of the ore that feeds into its smelters is mined elsewhere, in particular in Latin America. Chile and Peru together mined roughly a third of global ...

We’re going to stop that nonsense and bring steel here,” he added. China dominates global copper smelting and refining, controlling more than 50 percent of global smelting capacity and holding ...

On a call with reporters, White House trade adviser Peter Navarro portrayed the move as an effort to stop China’s build out of its copper sector and to address a broader national security ...

On a call with reporters, White House trade adviser Peter Navarro portrayed the move as an effort to stop China's build out of its copper sector and to address a broader national security ...

Abstract: Properties of electrolyte-semiconductor barriers are described, with emphasis on germanium. The use of these barriers in localizing electrolytic etching is discussed. Other localization ...

There is also a desire to restore the domestic mining, smelting and refining of copper given potential military and technological needs. Trump has long said his trade goals are to ensure that ...

Northisle Copper and Gold (TSXV: NCX) has issued a new preliminary economic assessment for its North Island project that it says demonstrated “excellent economics” for the staged development ...