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The Copper Scroll is one of the Dead Sea Scrolls found in Cave 3 near Khirbet Qumran, but differs significantly from the others.Whereas the other scrolls are written on parchment or papyrus, this scroll is written on metal: copper mixed with about 1 percent tin, although no metallic copper remained in the strips; the action of the centuries had been to convert the metal into brittle oxide. [1]
Heat exchangers using copper and its alloys have evolved along with heat transfer technologies over the past several hundred years. Copper condenser tubes were first used in 1769 for steam engines. Initially, the tubes were made of unalloyed copper. By 1870, Muntz metal, a 60% Cu-40% Zn brass alloy, was used for condensers in seawater cooling.
Copper-clad steel (CCS), also known as copper-covered steel or the trademarked name Copperweld is a bi-metallic product, mainly used in the wire industry that combines the high mechanical strength of steel with the conductivity and corrosion resistance of copper. It is mainly used for grounding purposes, line tracing to locate underground ...
In antiquity, copper's durability and resistance to rust or corrosion proved valuable. Copper's relationship with man is thought to date back over six thousand years. [1] Coppersmith is one of the few trades that have a mention in the Bible. [2] Copper was particularly worked in England, with ores smelted in Wales as early as the 1500s.
A-grade copper cathode is of 99.99% copper in sheets that are 1 cm thick, and approximately 1 meter square weighing approximately 200 pounds. It is a true commodity , deliverable to and tradeable upon the metal exchanges in New York City (COMEX), London (London Metals Exchange) and Shanghai (Shanghai Futures Exchange).
The Aces, down 15 with 5 1/2 minutes to play, had pulled within 90-88 on Kelsey Plum's seventh 3-pointer seconds earlier. Copper added a steal and a layup and Natasha Cloud and Sophie Cun
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