How copper is made - material, used, processing, steps, product .Despite this early production, most copper used in the United States was imported from Chile until 1844, when mining of large deposits of high-grade copper ore.processing of copper ore to usuable material,Copper Production - Copper Development AssociationIt is found in ore deposits around the world. . (copper-tin alloy) about 3000 BC, was the first engineering material known to man. . 3. Processing of Copper Ore.
processing of copper ore to usuable material