Add Yahoo as a preferred source to see more of our stories on Google. The site, shown here, was originally excavated during the Soviet period and was relocated using hand draw maps from a 1964 book.

Copper smelting is an intricate high‐temperature process that converts copper concentrates into purer metallic copper through a series of chemical and thermal reactions. Central to modern smelting ...

Copper smelting - a critical process in metal production - often generates slag, which contains valuable metals. This slag has historically been thrown away, causing harm to the environment and ...