Silver-bearing ore found at the settlement founded by Christopher Columbus's second expedition was not mined in the Americas, new research reveals. The ore that researchers excavated from the ...

Silver can now be extracted ecologically and more efficiently than before. Researchers extracted silver from a process stream using an environmentally friendly ion exchange technique. The technique ...

What was thought to be the first evidence of successful prospecting for precious metals in the New World turns out to be something completely different, according to a University of Arizona-led ...