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en.wikipedia.org/wiki/Copper_mining_in_the_United_States

Copper mining in the United States has been a major industry since the rise of the northern .... Russian explorers discovered copper on the Kasaan Peninsula of Prince of Wales Island in southeastern Alaska about 1865. Mining began in the ...

en.wikipedia.org/wiki/Copper

Copper is a chemical element with symbol Cu (from Latin: cuprum) and atomic number 29. ... In humans, copper is found mainly in the liver, muscle, and bone.

www.copper.org/education/Kids/copperandkids_wheredoescopper.html

Copper is found in many parts of the world. It usually comes from copper ore, but small amounts are occasionally found ("native copper") in distorted cubic crystal ...

copperalliance.org/history-of-copper

Copper is man's oldest metal, dating back more than 10,000 years. A copper pendant discovered in what is now northern Iraq has been dated to about 8,700 ...

www.webelements.com/copper/history.html

The discovery of copper dates from prehistoric times. There are reports of copper beads dating back to 9000BC found in Iraq. Methods for refining copper from its ...

www.reference.com/history/copper-first-discovered-1cad2d79c1cdb89

The earliest documented use of copper was around 9000 B.C. in the Middle East, according to ProQuest, ... A copper pendant found in northern Iraq dates back to.

scienceviews.com/geology/copper.html

Although native copper is somewhat rare, large amounts are found by the Great Lakes and was mined by ancient American cultures. Copper is usually found in ...

www.ducksters.com/science/chemistry/copper.php

Copper is found in the Earth's crust. Because copper is slow to react, it is often found in its pure form. This was how many ancient cultures were able to take ...

resources.schoolscience.co.uk/CDA/11-14/chemistry/copch32pg1.html

Copper is an unreactive metal - it reacts only slowly with the atmosphere. This means that huge lumps of copper metal are found buried in the ground as nuggets ...

education.jlab.org/itselemental/ele029.html

Archaeological evidence suggests that people have been using copper for at least 11,000 years. Relatively easy to mine and refine, people discovered methods ...