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 though copper fell dramatically in 1907 as well. However, Kershaw and Dodds intended to erect a crushing works at the site the following year. The mine was worked under tribute in 1909 - 1910. In 1911 -1912 work recommenced, with both copper and tin prices resurging. A road was cut to the site, and a shaft sunk in the bottom of the tin mine, which had previously been mined largely by open-cut. The old smelter was described as still being in good condition in 1913, but mining was clearly slow . In 1914 the mine was taken over by the