Primary copper production starts with the extraction of copper-bearing ores. There are two basic ways of copper mining: surface and underground mining. Due to copper being spread in relatively low concentrations over large areas surface or open-pit mining is the predominant mining method for copper in the world.
Part of an interactive on-line booklet about copper mining showing the basic steps in mining and purifying copper. page 2: The main stages: Copper minerals and ore are found throughout the Earth& 39;s crust. They occur in both sedimentary and igneous rocks. The outer 10km of the crust contains 33g of copper for every tonne of rock.
The copper is used in many appli ions. Copper is strong and has excellent thermal and electrical properties. It is used mainly in electrical wiring 60% roofing and plumbing 20% and industrial machinery 15% . Copper is present in our homes our cellphones our computers and our cars – the average car contains 1.5 km of copper wire.