Copper in architecture used in residential and commercial building structures. Variations in color stem primarily from differences in the alloy chemical composition. Some of the more popular copper alloys and their associated Unified Numbering System (UNS) numbers developed by ASTM and SAE are as follows: In practice, the term ‘bronze’ may be used for a variety of copper alloys with little or no tin if they resemble true bronzes in color. Further information on architectural copper alloys is available. The criteria by which copper and copper alloys are selected for architectural projects include color, strength, hardness, resistance to fatigue and corrosion, electrical and
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