Serbia mining: Rio TintoMarch 22,2016- Two of the most powerful world companies are opening precious metal mines near Bor. “Rio Tinto” already found in Serbia the richest world deposit of lithium. significant reserves of boron were found, an irreplaceable element in the production of boric acid
,https://serbia-energy.eu/serbia-mining-rio-tinto-copper-gold-exploration-project-promising/