The term COPPER SOURCE can be broken down into five crossword solutions: CHILE (5 letters), MINE (4 letters), ORE (3 letters), PERU (4 letters), and CENT (4 letters). Chile is a country in South America that is the world's largest producer of copper, with mines located in the Atacama Desert. A MINE is an excavation in the ground from which ORE is extracted. ORE is a mineral or rock from which a valuable metal or mineral can be extracted. Peru is another South American country that is a major producer of copper, with many of its copper deposits located in the Andes Mountains. CENT is a unit of currency, and copper is often used to make coins.