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How Is Metal And Stone Extract From Its Ore

How Is Metal And Stone Extract From Its Ore

2020-5-25Stone age 2,198,000 BC-3000 BC. Gold 6000 BC. Gold - found uncombined in nature. Copper 4200 BC. ... The kiln is lined with stones and clay the sulfide ore is added. Then the air is blown into it from goatskin bellows or people. The by product slag is removed an copper solidifies at the base of the kiln. ... Titanium- extracted by metal ...

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