Copper than less-developed countries (30–40 kg per capita). The process of recycling copper is roughly the same as is used to extract copper but requires fewer steps. High-purity scrap copper is melted in a furnace and then reduced and cast into billets and ingots; lower-purity scrap is refined by electroplating in a bath of sulfuric acid. Numerous copper alloys have been formulated, many with important uses. Brass is an alloy of copper and zinc. Bronze usually refers to copper-tin alloys, but can refer to any alloy of copper such as aluminium bronze. Copper is one of the most important constituents of
Sundown Tin and Copper Mine 26 tons of copper concentrates were produced. Work carried out in 1916-17 included the construction of flues for saving arsenic, the electric lighting of the mines and mill, the construction of a new concrete dam, a new elevated double rope line form the new tin shaft to the mill, new self feeders at the mill, and the redressing works was to be remodelled and shifted from its present location at the mill to the calciner. The battery consisted of the 10 head stamper, 4 classifiers, 5 Wilfley tables, 2 Berdan pans and several buddles. The single reverberatory furnace was used