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Unformatted text preview: because they found that adding a small amount of tin to copper made it easier to cast . Bronze was used so much at this time that the period after the Neolithic Era is collectively called the Bronze Age. During this time, between 2500 to 600 B.C.E., copper was being mined mainly in the British Isles, as seen below in Figure 1 . Figure 1. Image of West Mine at Alderley Edge in Chesire . References.  CSA Guide to Discovery A Brief History of Copper. Marianne Stanczak 2006, CSA. Accessed 9/25/2006 http://www.csa.com/discoveryguides/copper/overview.php? SID=5dj1aoekbcd0rd3lcqtsm8htr6  Copper. From Wikipedia, the free encyclopedia. Licensed to the public under the GNU. Free Documentation License. Page last modified, Sept. 21st.2006 http://en.wikipedia.org/wiki/Copper...
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