“Instead of flint tools commonly used in the Stone Age ... But not only is the copper dagger ancient and rare, but it also likely belonged to someone with a high status in society.

In medicine, copper was used for medical purposes in ancient Egypt. Copper’s antimicrobial properties made it an effective tool in preventing infection, and its malleability allowed for the ...

tools, c, in the Lake Superior region. In 1848 the first of these old mines was discovered, and in it was found a mass ot pure copper, weighing six tons, which had been raised by ancient wedges ...