suggesting that mining and smelting of metal ores in Poland began around the 8th or 7th century BCE, starting with lead rather than copper,” as reported by Arkeonews. His team’s research ...

Up to 4,000 years ago in the Yellow River Valley, craftspeople were smelting tin, copper and lead into bronze ... coins by extracting silver from lead-rich ore. Greece’s mining and smelting ...

But satisfying our growing appetite for copper products without shipping ore to other countries for processing — and possibly paying a stiff tax in the form of tariffs to get that copper back ...

Results from Maronan Metals’ (ASX:MMA) 2024 drilling campaign have reinforced strong continuity of wide zones of silver and ...

FCX stock rose on an executive order late Tuesday that could lead to Trump tariffs on copper, but it won't happen soon.