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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 ...

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 ...

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 ...

copperalliance.org/about-ica/ica-history

The Copper Alliance represents the network of regional copper centers and their members, which is led by the International Copper Association, Ltd.

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.

www.desertusa.com/rocks-minerals/copper.html

Copper found in the free metallic state in nature is called "native copper." It is found throughout the world as a primary mineral in basaltic lavas. The greatest ...

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 ...

www.dartmouth.edu/~toxmetal/toxic-metals/more-metals/copper-history.html

Nov 18, 2010 ... Archeologists have also found evidence of mining and annealing of the abundant native copper in the Upper Peninsula of Michigan in the ...

www.carondelet.pvt.k12.ca.us/Family/Science/Shiny/COPPER%20page.htm

Copper was first used by man over 10,000 years ago. The oldest known copper finding is a copper pendant that was discovered in what is now northern Iraq and  ...