It extracts over 10,5 million tons of copper ore every year and produces copper concentrate which is sold to the copper refineries at Pirdop.

A copper refinery was opened on the island in 1909, but this closed in 1919.

Electrolytic metal refining is particularly conducive to producing selenium as a byproduct, and it is obtained from the anode mud of copper refineries.

Copper futures prices tumbled yesterday on news that a labor agreement had averted a strike at a large state-owned Chilean copper refinery.

If the copper refinery includes an electrochemical process after the furnace, then unwanted elements are removed from the impure metal and deposited as anode slime.

Refining at the mines as well as at a copper refinery in Amarillo, Texas produce 375 million pounds of refined copper each year.

The site expanded with the addition of a copper refinery, a tube mill, a rolling mill and a canal wharf on the Dudley Canal.

This was the final output from the mine; further refinement took place at copper refineries elsewhere.

The station was a busy country station serving the needs of workers at nearby Thomas Bolton's copper refinery.

Mining ceased when Union troops destroyed the copper refinery and mill at Cleveland, Tennessee in 1863.