Скачать или смотреть Ancient Copper Work Shop found near St. Louis USA

Native Americans have been working with copper for nearly 10,000 years in North America:..Natives used a repeated steps of pounding, craving, heating and crafting to create jewelry, tools and weapons. There are mining sites that are old as 10,000 years old in the Great Lakes area and Canada...The ancient copper work shop at Cahokia was used between 800 A.D. to 1400 A.D...Natives did also have basic skills in smelting. Artifacts of silver, gold, alloys and arsenic bronze have been found in or near the ancient mounds of the Eastern United States the former home of the Mississippian Culture...Iron artifacts have been found in Canada and the Northeastern United States that were created by Native Americans.

http://www.mpm.edu/collections/artifa...
http://torrivent.blogspot.com/2009/11...