The World Copper Factbook 2019 International Copper Study Group 48 Major Uses of Copper Consumer and General Products From the beginning of civilizat ion copper has bee n use d by vario u s societie s to make coins for currency Today count rie s are replacing lower de nom i nat i o n bills with copper ba sed coins as these coins last 10 20 an d ev en 50 times long er In the United States one cent coins and five cent coins contain 25 and 75 copper respect i ve ly while oth e r US co i n s contain a pure coppe r core and 75 copper face 1 In the recently expande d European Union the Euro coins first int r oduce d in 2002 also contain coppe r 1 So ur ce U S Depa rt m e nt of t h e Trea su ry Copper and coppe r base d pr oducts are used in offices hous eho l ds and workplaces Comp uters electrical appliances cookwa re brassw are and locks and keys are just some of the pro ducts ex ploiting coppers advantages In addition in areas kn own to be copper deficient c o ppe r is use d by farmers to supple me nt livestock and crop feed Images court e sy of the In ternational Copper Association and the C o pper Develo pment Association