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Copper was the first metal mined and crafted by man, and has been the most important one in the oldest times of history, because it was available in great quantities and was initially extractable almost at the surface of ground.
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www.rameria.com/inglese/history.html
www.rameria.com/inglese/history.html
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History of Copper ... 60 Centuries of Copper: Intended for the reader who is interested in the general history of copper mining, the development of metal-working processes and the uses of ... The History of Copper in the U.S. covers the history of copper production and consumption throughout American history to present day.
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www.copper.org/education/history/copper.html
www.copper.org/education/history/copper.html
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The Copper Development Association Inc. (CDA) is the market development, engineering and information services arm of the copper industry, chartered to enhance and expand markets for copper and its alloys in North America. ... History of Copper...
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www.copper.org/
www.copper.org/
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The use of copper and gold marked the transition from the Stone Age to a more modern way of life. Ancient civilizations could use copper because it is found in its native state on the surface of the ground, because it has a distinctive color, and because it is easily worked.
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www.unr.edu/sb204/geology/history.html
www.unr.edu/sb204/geology/history.html
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Throughout history, copper's use in art has extended far beyond currency. Vannoccio Biringuccio, Giorgio Vasari and Benvenuto Cellini are three Renaissance sculptors from the mid 1500s, notable for their work with bronze.
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www.csa.com/discoveryguides/copper/overview.php
www.csa.com/discoveryguides/copper/overview.php
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The Element Copper; [Click for Isotope Data] ... History and Uses: ... Archaeological evidence suggests that people have been using copper for at least 11,000 years. Relatively easy to mine and refine, people discovered methods for extracting copper from its ores at least 7,000 years ago.
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education.jlab.org/itselemental/ele029.html
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Brief description: copper is one of the most important metals. Copper is reddish with a bright metallic lustre. It is malleable, ductile, and a good conductor of heat and electricity (second only to silver in electrical conductivity). ... History: meaning of name; discovery; and history of the element...
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www.webelements.com/webelements/elements/text/Cu/key.ht...
www.webelements.com/webelements/elements/text/Cu/key.html
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A Short History of Copper Mining ... Copper was first mined in this area by an ancient vanished race between 5,000 and 1,200 bc. These miners left no burial grounds, dwellings, pottery, clay tablets or cave drawings. What was left behind was thousands of copper producing ... Copper Country Road Trips: Keweenaw Mining History...
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www.exploringthenorth.com/cophistory/cophist.html
www.exploringthenorth.com/cophistory/cophist.html
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